OPERATING MAINTENANCE INSTRUCTIONS WITH PARTS LIST

COFFING®
HOISTS

OPERATING &
MAINTENANCE
INSTRUCTIONS

WITH PARTS LIST

Publication Part No. ECMT-680-5

ECMT - MT Series

Trolleys used with

Electric Chain Hoist

For Capacities:
EC-1 Models _1/4-3 Ton - Up to 1HP
EC-3 Models - 1-5 Ton - 2 & 3 HP

IMPORTANT -CAUTION

To safeguard against the possibility of personal injury or property damage, follow the recommendations and instructions of
this manual. This manual contains important information for the correct installation, operation, and maintenance of this
equipment. All persons involved in the installation, operation, and maintenance of this equipment should be thoroughly

familiar with the contents of this manual. Keep this manual for reference and further use.

A WARNING

To prevent personal injury, do not use the equipment shown in this manual to lift, support, or otherwise transport people,
or to suspend unattended loads over people.

TABLE OF CONTENTS

SECTION I INTRODUCTION
\-1 Genera! .............................................................................................................................................
\-2 Safety Standards ..............................................................................................................................
\-3 WatTanty ..........................................................................................................................................

SECTION II INSTALLATION
2-\ Safety Notes .....................................................................................................................................
2-2 Trolley Mounting .............................................................................................................................
2-3 Power Supply Connection ...............................................................................................................

SECTION III OPERATION 3
3-1 3
3-2 Safety Notes ..................................................................................................................................... 3
3-3 Handling the Load ...........................................................................................................................

SECTION IV INSPECTION ................................................................................................................................. 3

SECTION V MAINTENANCE AND REPAIR
5-1 3
5-2 Lubrication ....................................................................................................................................... 3

SECTION VI WIRING
6-1 Voltage Conversion ....................................................................... ........... .......................... ............. 4
6-2 Wiring Diagratns ............................................................................................................................. 4

SECTION VII ILLUSTRATED PARTS LIST 7
7-I General ............................................................................................................................................. 7
7-2 How to Order Replacement Parts ....................................................................................................

SECTION I

INTRODUCTION

1-1. General Information ship or materials, repairs will be made without charge and
This manual provides infonnation for the installation and the hoist will be returned, transportation prepaid.
maintenance of Coffmg® MT Series Motorized Trolleys
This warranty does not apply where: (1) deterioration is
furnished with Be Series Electric Chain Hoists. The Illus- caused by nonnal wear, abuse, improper or inadequate
power supply, eccentric or side loading, overloading,
trated Parts List shows all trolley parts. For unillustrated chemical or abrasive actions, improper maintenance or
hoist parts, refer to the Operating and Maintenance Instruc- excessive heat; (2) problems resulted from repairs, modi-
tions for the hoist. fications or alterations made by persons other than factory
or Duff-Norton Authorized Warranty Repair Station per-
1-2. Safety Standards sonnel; (3) the hoist has been abused or damaged as a result
of an accident; (4) repair parts or accessories other than
Refer to the Ee Hoist Operating and Maintenance Instruc- those supplied by Duff-Norton are used on the hoist.
Equipment and accessories not ofthe seller's manufacture
tions for guidelines and applicable standards for safe hoist are warranted only to the extent that they are warranted by
and trolley operation, as well as infonnation on the proper the manufacturer. EXCEPT ASSTAlEDHERElN,DUFF-
application of this product. NORTON MAKES NO OTIlER WARRANTIES. EX-
PRESS OR IMPLIED. INCLUDING WARRANTIES OF
1-3. Warranty MERCHANTABILITY AND FITNESS FOR A PAR-
Every hoist is thoroughly inspected and tested prior to TICULAR PURPOSE
shipment from the factory. Should any problems develop,
return the complete hoist prepaid to your nearest Duff-
Norton Authorized Warranty Repair Station. If inspection
reveals that the problem is caused by defective workroan-

SECTION II

INSTALLATION

2-1. Safety Notes d. Trolleys can be mounted on beam radii as small as
a. Inspect the hoist and trolley for any evidence of ship-
4 feet. Slightly increased spacing may be required
ping damage or loose parts. when the trolley is mounted on curved beams to main-
b. The beam and supporting structure should have a load tain freedom of movement.

rating at least equal to that of the hoist. BEAM MANUFACTURING TOLERANCES AL-
c. All beams or tracks must have positive stops to prevent LOW WIDE VARIATIONS FROM HANDBOOK
FLANGE WIDTHS. SLIGHT CHANGES TO REC-
the trolley from running off the end. OMMENDED WASHER DISTRffiUTION MAY BE
NECESSARY TO SUIT SPECIFIC INSTALLA-
2-2. Trolley Mounting TIONS.
a. For the best possible wheel and beam life, Coffing®
The particular beam on which your hoist is to be in-
Motorized Trolleys use different wheels for American stalled should be measured and trolley spacer washers
Standard I-beams, Wide (flat) Flange beams and pat- adjusted as required to achieve a wheel to beam flange
ented monorail track. Check that the trolley wheels
match the contour of the beam flange. clearance of lin" to l/g".
b. Standard Motorized Trolleys are adjustable for the
flange widths of3.33 to 6.00 inches (4.0 inch minimum 2-3. Power Supply Connection
on 4 or 5 ton models). Adjustment for I-beam sizes and a. Disconnect and lock out power before making connec-
tolerances is accomplished by locating the spacer wash-
ers as shown in Figure 2-1. Nonnal placement of tions.
washers is given in Table 2-l. b. Follow procedures under "Power Supply Connection"
c. The load pin nuts for trolleys require a tightening
torque of 100 ft.-Ibs. Refer to Figure 2-1 for nut in the hoist Operating and Maintenance Instructions.
identification. c. When used, current collectors should be installed per

the recommendations of the collector manufacturer. A
collector mounting ann is available from Duff-Norton

which accepts most brands of collectors. This arm is 2e 4. Initial Lubrication
vertically adjustable to accommodate most collectors Lubricate trolley wheel gears wirh NLGI-2 or heavier
and beam sizes. grease.

TABLE 2-1. TROLLEY I-BEAM ADJUSTMENT DATA

"I" Beam Size

6" 8" 10" I 12" 15" 18"

% to 3 Ton, Lug Mount (EC-l Models) 8
5
Washers Between Hoist & Trolley Thick 13 6 5:9 1
01 0
Thin 86 0 ! 4 0
54 3 4 0 6
Washers Outside Trolley Thick 5 8
03 1
Thin 10 5 I1 1
74
,1,2 and 3 Ton, Box Mount (EC-3 Models) 89 I1 4 7 6
3 4
Washers Between Hoist & Trolley Thick 85 0 1
63 6 1
Thin
1 I4
Washers Outside Trolley Thick

Thin

4 and 5 Ton (EC-3 Models)

Washers Between Hoist & Trolley Thick I1 1 3 6
Washers Outside Trolley Thin 1
Thick 04 3 1
Thin 4
I6 , 6 4
2
5I1

Maintain approx. %2" clearance at point "C"

....-,--- -- ;t:-.nill]l1][l2]L':--!

r-: -,

, . . L...J -,:' .

V4 TO 3 TON 1,2 AND 3 TON
BOX MOUNT
LUG MOUNT (EC-3 MODELS

(EC-1 MODELS)

4AND5TON
LOAD BAR MOUNT

(EC-3 MODELS)
FIGURE 2-1. SPACER WASHER LOCATION: LUG MOUNTED HOISTS

2

SECTION III
OPERATION

3-1. This section offers guidelines for the proper operation does not contact any obstructions.
of Coffing Motorized Trolleys used with electric hoists. It I. Read ANSI 830.16 Safety Standard for Overhead
is not intended to serve as a handbook on rigging. For
information on the safe llse of slings and similar gear, users Hoists.
are urged to consult a textbook on rigging.
3-3. Handling the Load
3-2. Safety Notes a. Align hoist and trolley directly overthe load. Avoid side

a. Inspect the trolley for any sign afloose, broken or mal- pull or any action which causes trolley wheels to lift off
functioning parts. Any malfunctioning trolley should one side of beam.
be tagged as "out of order" and removed from service b. Bring the hoist hook into engagement with the load and
until the defect is corrected. make sure it is well seated before proceeding to move
the load.
h. Be sure that beam end stops are in place. c. Lift the load just clear of its supports to check for proper
c. Before starting the trolley, the operator should be cef- brake operation. then proceed to lift the load to the
height necessary to clear any objects over which the
tain that all personnel are clear. load must pass.
d. Do not cany more than the rated load of the trolley. d. Avoid letting load swing excessively while moving the
e. Avoid jogging controls or quick reversals of trolley. trolley. Let the trolley coast to a stop instead of reverse
f. Do not carry people or loads over people. plugging the trolley motor.
g. Do not leave a suspended load unattended. e. Do not run the motorized trolley into beam end stops or
h. The operator should have a clear view of the load other trolleys on the beam.

anytime it is moving and should be sure that the load

SECTION IV

INSPECTION

The trolley should be inspected for damage. loose parts, tion. See the hoist Operating and Maintenance Instructions
and excessive wheel wear at the same time as hoist inspec- for inspection schedule guidelines.

SECTION V
MAINTENANCE AND REPAIR

5-1. No routine maintenance of the trolley is required other b. Trolley Gearbox-Periodic lubrication should not be
than wheel gear lubrication. necessary. If the gearbox is opened for repair, rcpack
with an NLGI #1 grease.
5-2. Lubrication
a. Trolley Wheel Gears-Lubricate at periodic inspec- c. Trolley Wheel Bearings-Trolley wheel bearings are
prelubricated and sealed. Bearings must be replaced if
tion with an NLGI #2 or heavier grease. problems are indicated.

3

SECTION VI
WIRING

SAFETY NOTE of leads in both the trolley and the hoist. See the appropriat(
Disconnect power from unit before removing electrical wiring diagram for splice connections.
covers.
6-2. Wiring Diagrams
6-1. Voltage Conversion The wiring diagram for standard models are reproduced on
Standard single speed units use dual voltage mOiors (230/ the following pages. In addition, every hoist should have a
460 volt, 3 phase; 115/230 volt, single phase). Motorized wiring diagram located in either the trolley control box or
trolley units are factory wired for a specified voltage. the hoist long end cover.
Reconnection to the alternate voltage requires resplicing

4

i'iOIST REVERSING TROLLEY REVERSING

SWHeM SWITCH

...I: ,
:=J~~~~~~;~~~~l1li-t~~t:~~~~;}=, :===:::;-JGil L2 LI
~H4

r--" , , -" , -

.--""

,----11 SI HI-
r-HI
(uP) (oN) H2i

- ""_G,-'l -,

zC: '" [f " "

.G.-'lm:D :l-1';~JJI r~ L lJC21 UP L S L--t:::::J ~"'~"'"'
m'1'
n
,,~
XI ~2
:to
='-----J
'" ~:g
m~
c:m
$.~.....£...,.
C>

FOR I J 12- REDMJl' DGROEWENNLW. T5

REV --l <v >--It- , , - -

P.B.STATION

SHOWN WIRED FOR 115 VOLTS.

IMOTOR TROLLEY M(
_n_C"_? 11 13--

NOTES:
1. Diagram for all EC Models except 0564; for

EC0564 swap locations of hoist motor leads
- T5 and Ta.

2. Connect wiring harness to identical terminals
3.• indicates splice connection.

~liI:!\! - -,
OTOR --------------...r - - - - - - -- - } TO CUST
J:l:tm;:'" I_ '"''

:-==,J1
I ~i'i'm~~
mI I
llf~III

'l'5"''f' .rrfI,\H-H-SOLENOID LT4 T617
~
L--- 15 " "'
START SWITCH
"="~"S L-T!!i 1012 r~:::i)(
16
'---" -=:c".
TROLLEY MOTOR

WIRING DIAGRAM (115/230V)
I SPO HOIST I SPO TROLLEY

HOIST REVERSING TROLLEY REVERSING
SWITC- H
SWITCH

ch L', U ,---""'' ' LM3 "'
I
OR -", ~

~T5 ,L--" "'

tl--T;- S2~ -;t; "
L-:,::r2-
r;:::i"''-
Giro; 5"1.
crCl~ X2
:!!
l
W_cC:l

z",

Clm

'm"'~I'

'" ""Um".>~".,,

CZ:mo
=li:

~u!
o

h -z14 cls
ctB cteJue H1H2 H3 H
C20...l
LnXJXFMER
t--"
ON UP L. S. DOUN L. S. j' ','
tt----C122,'
~~ =-FOR RED NUT GREEN NUT

REV -1~ +-13-

P. B. STATION

SHOWN WIRED FOR 115 VOLTS.

FOR 230 VOLT OPER."TY".' n_'.''_''_''_''.'.'...''_'_...T•

IFOLLO~ING LEADS AND SPLICE TOGETH ::R:

HOIST MOTOR TROLLEY MOTOR TRANSFOF :MER.

T2-T3 $1-2 T2-T3-T8 H2-H;

NOTES:

I. DIAGRAM FOR ALL EC MODELS EXCEPT 0564: NALS.
FOR EC0564 AND ALL ~R MODELS. S~AP
LOCATIONS OF HOIST MOTOR LEADS T5 AND

2. CONNECT ~IRING HARNESS TO IDENTICAL TE
3. • INDICATES SPLICE CONNECTION,

TROLLEY MorOR - -_ - - --,
JUNCTION BOX
"'- -. -____-.:: - - - - -

MI '!Tl\l\ll ---1-L TO CUST. 1
POYER
I

-," I JMC4--~
,
,
,
,

c "

H4 '-u 7,;) " l'"f--T1 IPAC-
-1' MI HOIST)
I~J'LfSf' 1rftr 1:::jj-f--M-I-, •
s~E~~6ID It;;ZI 1] "121 MOTOR L-T4~
START
SIJITCH '-H
L-rs 18
"'CO
...J I()TOl T

L

(SINGLE PHASE UNITS)

HOIST REVERSING TROLLEY REVERSING
SWITCH SWITCH

(;l T3 HOIST " 13
BODY
:l! "
C15
~ "

m UP

E'"i C14 X2

fn ::!NO• ;(O• C14 C20 CIS C21 ~

",:!! I uP~-G=Rr ~ X2 Xl (
m-aCe:l DNLS.
to
ommll GREEN
O%N'" ,;\.. UPLS.
NUT
~ iii" "DDN. NUT

..... l!l
!z/lcm.>
C~l~o

",-

il

o....

~

r-

§

.I' FOR.
REV.

PUSH BUTTON
STATION

SPLICE CONNECTIONS

HOIST TROLLEY

I 230V 460V 230V 460V
W·T1·n Ml·T1
I 11·HI·H2 L1·Hl M2·T2·r8 M2·T2
M3·T3·T9 M3·T3
I l3-H3-H4 L3-H4 T4·T5·T6 T4·T7

I n-T7'SI H2·H3 T5-18
I
T2-T8·52 "T2 T6-T9
I
I 13·T9
I
I T4-T5·T6 T3

IIIIIIL T4·T7

T5·T8·S1

T6·T9·52

NOTE: • INDICATES SPLICE

CONNECT WIRING HARNESS CONNECTIONS
10 IDENTICAL TERMINALS.

[II I II I I r~

"N",\.~!:j - -...-I - CJ~

::!: ::::iii::l! - - - - - y-
~ TOCUST.
10 TROLLEY MaroA POWER

_~ ___________________~SEEATA_8L_E5__________~
LXJ i i L, L. L, T" T T"T,. L,TT: JH1 H2 H3 H4 51
52 Tl T3 T5 T7 T9 T1 T3 T5 T7 T9

XFMER

MaroR HOIST TROLLEY
BRAKE
MaroA MaroR
SOLENOID
230/460V 230/460V
'PH
'PH

-',",!! HOIST REVERSING TROLLEY REVERSING

- .:e>m:ntC:CmDl swnCH SWITCH
- - - - - - - - - - - - - - - -.;L~-r-----------~---------.-::.-::.-::-.::-.=
en",
it'"~" Ll'L,3
CZl~, w
'&( TI ~~iS
rm"<D eo
:~ I M
enfl C14 X2 CIS ""
"mmo
"'I-i~i~ON --l ere'l cfoBIci4 cis [HI H2 H3
mil: U? L. s. DOI.IN L. S.
C21- LX
- ...c::"t"~ RED NUT GREEN NUT
nXFMER
00 0'" -i "
XI X2
~m REvl--l
"
--ezn'0." P. B. STR.

Cl ..

f;;Ro

,emm,n"'oz""

cil:

:"D"0c

Om

rrm""er_n"

.:::S

---}-= ~ -l~ _ TO CUST.
PO\.JER

• INDICATE SPLICE CONNECTIONS

,•L;:- To .J TROLLEY 1

TO TROLLEY --,-8JU0XNCTION l'
-
MOTOR NO I
..",,'iC._
SEE mBlE I

TO TROLLEY

MOTOR NO '"

NOTE: CONNECT WIRING
HRRNESS TO IDENTICRL
TERMINAL

H4 sTI~y
~ TlT2T3H TS T6T7T1IT9
X!
R BRRKE SOLENOID 'lWJ""":'''''' 'lWJ,,",,::·mo.

2 IClTCR ~I II)T(lt ~1
I plJlS(
1 PIJIS(

2l0/160V

(I PHASE SINGLE SPEED HOIST. SINGLE SPEED TROLLEY)

-"CII , __

"mem.., I

:ti5 ,"_'~~'>_1

Oc: I1 u.LI -

!-!l"m, 1

(,,~ I1 XFMER ['" _ "

-zc·.> 1 "'"

~ G.m-<l fDl ,"
CIIm
"m0;: I, ,RESWIRTCSHINO UP ON T1 "
m-i
~e8"l r1 - - _.', ~q, r
.-
-f;; I_
-c
c _I~_ """ " ,

U

,'."'- I _I ',,0"11' ""
"I
I ,»-,. -"OIST CON
-'0 - -
L
--

• IN-LINE SPLICE

~-L2-~-I1I" U ~I 1
11
-C> -,I

_ '1 "'" lc ,-.
,_"
1"

C>
C>

, . > ',"2 ,I,""' I1

'_ - II II

n I

,"n -'"nl T\311 I

NTROL ,~-,'I
,~f1~UX2 , 'I
'
I -.J TROllEY CONTROL
::
:_1 ----~

1

-. "~~~ ,~---------------------------------,
,"
,I I I I ,• °'-Zr"'
I
I II °u
I I II I
__ I- __LLL_~ >

I ,,,I ,,,I ,I •0•' 0 "Dr'c,I. W

,~0" ,< ," §'" --''
U"
I ,• °'r"
I S
I 0
I u
I 8!c•< •x
I ~
I ~
I ;:;::: •< X
I

Ii
~
," ,ffi.~
&!~ ,

0 I

r------------ ----,,I
, e•X
I ~----­ I
I I
I
I ,, I
,• I
O~l~~~ 2 I "Dr'c,I. I
,• I
:: §'"
,• i°'r-5"'
---------------~ ,,•"
u
0

0 r

~! In

Ho

I

•i

8iC:<•

"<

~
i

•• • 1r!!! ....ii! "u ,<-. 0

• u2 TT r«

u ~~ •0 ~ In

•x •U 'c".

• 1+6J~~

u •0

U ,,
"~

FIGURE 6-4. 983ECMT269A
(SINGLE SPEED HOIST, TWO SPEED TROLLEY)

10

-------------------,

2~ I

~~I. I

I

'·;---;0,----' I

rl~'-»tI _~,. I
• §. ~~ I

~ ;:: :::;: I

~ ~£< I-

!I ~ is I
•
UI
>~ I
5I
~I

!

I

I

I

___ --1I

I
I

I

2 ~ iii

U

FIGURE 6-5. 983ECMT271
(TWO SPEED HOIST. TWO SPEED TROLLEY)

11

SECTION VII
ILLUSTRATED PARTS LIST

7-1. General your trolley or hoist, always include the model and serial
The following exploded drawings provide a complete list numbers of hoist and trolley. The hoist and trolley will
of parts used in standard Motorized Trolleys used with EC each have its own numbers stamped into its housing.
hoist models. Since a number of different hoist and trolley
models are covered by this manual, differences may be When ordering motor parts, please provide complete
noted between the appearance of your part and the refer- motor nameplate data. including motor manufacturer
ence illustration. Where more than one part is shown for a name and mOlor "ref." number or model number.
reference number, sufficient information to pick the cor-
rect part should be included in the pall description. For NOTE
hoist parts not shown in this manual, refer to the hoist's Repair parts are available only from Coffing distributors or
Operating and Maintenance Instructions. authorized repair facilities. It is recommended that repair
part orders be directed to the authorized repair facility
7-2. How to Order Replacement Parts nearest you.
When ordering parts or requesting information concerning

TRANSMISSION
SEE FIG. 7-2

MOTOR
SEE FIG. 7-3 OR 7-4

SERIAL AND MODEL NUMBERS

Example: MT40035-3 Model No.
T2·101·NF Serial No.

12

9 2-SPEED UNITS ONLY SEE DETAIL A
OR DETAIL B
26 (SEE FIGURE 7-7)
9
='aY,/
,I
"- "- ~
b"llll

16

I

@ , ( }15 ______ I-.~_'PII--'!i

,~l~j0.~ /I/~
22 tr~~~K 4 6 .

I3'1 IvJ~'t~/~-.I1k~"~4:;~\ ~
1 ~«~~ .' ~.~ \ \
\\~~.'I .
I. 1/ \~Qj',
'Ii 28
ll."I" I, 15

1-' ..j"

l. '-.. '.>" " MOTOR GROUP
(SEE FIGURE 7-3 OR 7-4)
~'rf
~~~, .
10. ) . I '
.---.;;" "J

EC-1 HOIST /'..Y"

SUSPENSION EC-3

(PAGE 18, 19 SHOWS HOIST ATTACHED TO TROLLEy)

DETAIL A (2 TON AND UNDER) DETAIL B (3 TON)

FIGURE 7-1, TROLLEY GENERAL ASSEMBLY (3 TON & UNDER)

13

Index Part Name Part Index Part

No. No. No. Part Name No.

1 Load Pin I03Kl 17 Wheel: 45KlO
2 H4211 Plain 45Kl
3 Washer (l/8" Thick) H4209 Drive 102Kl
4 H·4210 200Kl
5 Washer (.135 Thick) 420Kl 18 Axle H·5528
6 H·5501 19 Spacer 5OOK4
7 Washer (.075 Thick) 36K3 20 Retaining Ring
8 560K4 21 Bearing H-4211
9 Pinion 22 Washer (1/8 Thick) H·4212
675K18 420K2
10' Retaining Ring 675K19 2 Ton & Under H·5331
11* 675K20 3 Ton H·2165
12 Cover, Control Box 675K21 23 Gear
13 675K22 24 Dowel Pin 36Kl
15 Gasket H·7519 25 Screw 36K2
H·7520 26 Control Box (If Used) 692Kl
16** Capacity Label: S·444 H·5529
H4084·P 2 Ton and under H·5530
1/4 Ton 3 Ton 5OOK5
H·3945 28 Decal
1/2 Ton H·3946 29 Retaining Ring 45K20
30 Retaining Ring 45K2
1 Ton 5KG4 31 Bearing 102K2
5KG31 32 • Wheel:
2 Ton 5KGl Plain
5KG2 Drive
3 Ton 33 Axle

Splice Cap

Insulator, Splice Cap

Screw

Lock Washer ,
Lock Washer

2 Ton & Under

3 Ton

Side Plate Weldment:

1 & 2 Ton (EC-3 Models)

3 Ton (EC-3 Models)

2 Ton & Under (EC-l Models)

3 Ton (EC·l Models)

* Not Illustrated
** Identify hoist and trolley model as an EC-l or EC-3.

FIGURE 7-1. TROLLEY GENERAL ASSEMBLY (3 TON & UNDER)

14

---- ------ -~.SeEDETAIL
,•r _~~---; A OR B
\ I,

18 20

MOTOR

22 SEE FIG. 7·3 OR 7-4

,rl~~
" " @"13 . /; .
12

DETAIL A " I( ~ DETAILB

4 TON STON

FIGURE 7-1A. TROLLEY GENERAL ASSEMBLY (EC-3 4 & 5 TON ONLY)

15

Index Part Name Part Index Part Name Part
No. No. No. No.
I Load Pin (up to 6" l3 Spacer (4 Ton Only) 200Kl
2 Flange Width) 103KI 14 Bearing;
3 H4211 500K4
4 Washer (W' Thick) H4209 15 4 Ton 500K5
5 Washer (.135 Thick) H4210 5 Ton
6 Washer (.025 Thick) 420KI 16 Retainer Ring: H-5528
7 Pinion H-5501 17 4 Ton H-5530
Retainer Ring 5 Ton H-5529
8 Tie Cable Assembly 955KG-6 , 18 Retaining Ring
9 955KG9 (5 Ton Only) H-421 1
Single Speed H-3945 19 Washer: H-4212
I Two Speed 20 4 Ton 420K2
Nut (Load Pin) 45KG2 21 5 Ton H·533 I
I Wheel Assembly (For 45KGl 22 Gw H-2165
S-shaped I-Beam Only): Pin 67717
10 (Consist of Index 45KG4 23 Screw
No. lO Thru 17) 45KG3 Decal: 5KG4
II 4 Ton: 24 Side Plate 5KG31
Geared Wheel Assembly H-3945 25 4 Ton
. Plain Wheel Assembly H-3946 STan 501(52
5 Ton: Load Bar: 501(51
12 Geared Wheel Assembly 4 Ton *127J9
Plain Wheel Assembly 5 Ton **12717
Nut Axle: Spacer "'"H-245!
4 Ton ** H-2438
5 Ton Bolt
Wheel (For S-Shape
I Beam Only): 45Kl
4 Ton: 45KlO
Geared Wheel (Gear
Not Included) 45K2
Plain Wheel 45K20
5 Ton:
Geared Wheel (Gear lO2Kl
Not included) 102K2
Plain Wheel
Axle:
4 Ton
5 Ton

* Motorized Trolley Models (4 & 5 Ton)
** Plain and Geared Trolley Models (4 & 5 tons)

FIGURE 7-1 A. TROLLEY GENERAL ASSEMBLY (4 & 5 TON ONLY)

16

ILLUSTRATION FOR

4 OR 5 TON ECMT

/:;o-'::;:~ WHEN BOTH HOIST AND
TROLLEY ARE SINGLE SPEED

SEE FIG. 7-5 FOR TROLLEY CONTROLS

NOTE POSITION OF TROLLEY
MOTORS AND TROLLEY CONTROL BOX
IN EACH VIEW.

FIGURE 16
REFER TO PAGE 20
FOR ASSEMBLY ARRANGEMENTS
OF HOIST TO TROLLEY

SEE FIG. 7-6 SINGLE SPEED TROlLEY
CONTROL BOX ASSY.
SEE FIG. 7-7 \wO SPEED TROLLEY
L.-/ ',CONTROL BOX ASSY.

ILLUSTRATION FOR
4 OR 5 TON ECMT
WHEN HOIST OR TROllEY
OR BOTH ARE TWO SPEED

FIGURE 16
17

EG-1
PLAIN TROLLEY
MOUNTED HOIST
(PARALLEL MOUNTED)

I EC-1
GEARED TROLLEY
, MOUNTED HOIST
(PARALLEL MOUNTED)

~ i
~_ _.JLJ' '~_L--'

EG-1
, MOTORIZED TROLLEY

MOUNTED HOIST

U" SINGLE SPEED

HOIST AND TROLLEY
(PARALLEL MOUNTED)

EC-1
MOTORIZED TROLLEY
MOUNTED HOIST
ANY 2 SPEED
COMBINATIONS
(PARALLEL MOUNTED)

ARRANGEMENT DRAWING - REFERENCE FOR EC-1 HOIST FIG. 1C

18

EC-3

PLAIN TROLLEY

,I MOUNTED HOIST
, (CROSS MOUNTED)

r", 1,2,3 TON

~I'i ~ Ec-3
GEARED TROLLEY
I' - - - - _ L ) , p,II MOUNTED HOIST
(PARALLEL MOUNTED)
u -"--~:' 1,2,3TON

,4'30 4'30 ./ Ec-3
MOTORIZED TROLLEY
if 1I t(I MOUNTED HOlST
t(i-'1-,11)\ :1 SINGLE SPEED
\, U HOIST AND TROllEY

I I (CROSS MOUNTED)

o Ia ,
1,2,3 TON

1-1-\ , EC-3
MOTORIZED TROLLEY
~\ o I: ofl' o i. MOUNTED HOIST
II ANY 2 SPEED
11 COMBINATIONS
(CROSS MOUNTED)
,I"
1,2,3TON
,

ARRANGEMENT DRAWING - REFERENCE FOR EC-3, 1, 2, 3 TON FIG. 1D
19

I A~ ~ ~ ~ =;=

~o~ ~o~f if' fr
~-t$ .j
sr-e'. ~ ,~ EC-3 (4 & 5 TON)
, PLAIN TROLLEY
i MOUNTED HOIST
I (CROSS MOUNTED)

T EC-3 (4 & 5 TON)
GEARED TROLLEY
\~" " JI\ MOUNTED HOIST
(CROSS MOUNTED)
11~~ I~O~)== = r=
'~./ ~ -",-lei EC-3 (4 & 5 TON)
, --IIi~ fE} MOTORIZED TROLLEY
~ MOUNTED HOIST
.I \~\ SINGLE SPEED
4 f-- , JI\ HOIST AND TROLLEY
~ (CROSS MOUNTED)
,,

@f~ = ""

~ IN~ f'

I P'0' , ",I", h r,£ !\
"'-•.)1 , ~J
I
)I
I

T ,)

I

~

,':J l-, ~~~,'.t[lC ~ ..... ~ f' I~
,~ ~Ot.'-"I'" =I J EC-3 (4 & 5 TON)
'- "..,." , ,, I-r" ; MOTORIZED TROLLEY
=""Z MOUNTED HOIST
I ANY 2$PEED
COMBINATION
I) (CROSS MOUNTED)
I

I

I

ARRANGEMENT DRAWING - REFERENCE FOR 4 AND 5 TON EC-3 CHAIN HOIST FIG. 1F

20

1

Index Part Name Part Index Part Name Part
No. No. No.
1 Retaining Ring Gasket No.
2 Retaining Ring SK2658-6 11 Gasket
3 Bearing H·5549 13 560K2
4 Worm: IF-504-2 14 Splice Plate 560K3
15 Screw 295Kl
5 35 FPM 485K21 16 H-1OO9-P
6 75FFM 485K22 17 Shaft lOOK12
7 Bearing 500K3 18 Woodruff Key S-23-15
9 Gear Housing 39K22 19 Retaining Ring H-SS27
10 Plug S-25-13 Worm Gear:
Screw H-2215 , 487K4
Adapter Housing: 3SFFM 487K3
All Except 3, 5 Ton 38K60A I 20 7SFFM 202Kl
3 and 5 Ton Only 38K61A 21 Shim Washer H-5609
22 "0" Ring 32K3
End Cap

FIGURE 7-2. TROLLEY TRANSMISSION

21

•

Index Part Name Part 35FPM Index Part Name Part
75FPM No. Gasket
No. Retaining Ring No. 100 FPM 17 Endeap No.
Retaining Ring 150FPM 18 Gasket
I Bearing SK2658-6 19 Splice Plate 560K2
Wonn H5549 All Except 20 Screw 32K3
2 3,5 Ton 21 Brake Housing 560KJ
3 JF504-2 3,5 Ton Only 22 Brake Cover 295Kl
4 485K25 23 Screw (Socket Head) Hl842P
485K26 35FPM 24 Stud 37111
5 Bearing 485K27 75FPM 25 Brake Adapter 36JIO 115V
Gear Housing lOOFPM 26 Retaining Ring 849-12
6 Oil Seal 485K28 150 FPM 27 Brake Disc 141J12 230V
7 Gasket 5OOK3 28 Spring JL142
Screw 29 Plate & Annature H5501 460V
I8 Adapter Housing 39K23 30 Plate & "E" Frame 58IJIA
561K2 31 Brake Coil 344J6 575V
9 Shaft 32 JF858
10 Woodruff Key 5601<2 No< 208V
Retaining Ring H2215 I Retainer JF857
II 38K60A Nut JF853-1
Wonn Gear 33 JF853-2
12 38K61A 34 JF853-3
13 lOOK!2 35
523-15 JF853-4
I 14 H5527 i JF853-5
487K4 H3978
I15 Shim Washer 487K3 JF710
487K2 H3978
16 "O"Ring 487Kl
20ZKl
H5609

FIGURE 7·3. TROLLEY TRANSMISSION WITH BRAKE

22

~8
II
7 -"

2

Index Part Name !, Part Index Part Name Part
No. No. No. No.

Motor Complete, 3 Ph, 60 Hz: IL·S63·IM I Two Speed (Cont.); JL·S73·9M
IL·S63·2 575V. IL·S73·IOM
Single Speed; (Cont.)
ZOS·Z30/460V. IL·S63·5M 'I, HP *
IL·S63·6 Z *
1/" HP 'f, HP
IL·S73·IM 3 Stator (Not Available *
'f,HP IL-S73·2M 4
575V. 5 Separately) 500K3
IL-S73·5M 6 Rotor & Shaft
'/. HP IL·S73·6M 7 End Shield *
'f, HP 8 Bearing, Front *
*
Two Speed; Ring, Retaining
ZOS·230V. Screw, Motor Mount I
Lock Washer
'I, HP

'f, HP
460V.

'/. HP
'f, HP

"'For individual motor parts, contact your Duff-Norton Dlstnbutor and supply complete motor nameplate data.

FIGURE 7·4. TROLLEY MOTOR PARTS
(3 PHASE)

23

TROLLEY MOTOR
WITH INSTANT
REVERSING SWITCH.

Index Part Name Part Index Part Name Part
No. No.
1 Motor Complete, No. Shim Wheel No.
II51230V, I-PH, 60Hz: 6 Start Switch
2 1/4HP JL-861-11M 7 Capacitor •
112HP IL-861-12 8 Cover, Capacitor
3 9 Start Switch cover 83912
4 Stator (Not Available • IO Lockwasher
5 Separately) • II Screw, Motor Mount •
• 12 Screw •
Rotor & Shaft I3 Screw •
End Shield 5OOK3 14 •
Bearing •
•
•

*For individual motor parts, contact your Duff-Norton Distributor and supply complete motor nameplate data.

FIGURE 7-4A. TROLLEY MOTOR PARTS
(SINGLE PHASE)

24

Index Part Name Part No. Ind", Part Name Part No.
No. JL-861-12 No.
JL-861-14 Motor. Complete: • Capacitor Cover
31 lh HP. 1151230V, 60 Hz 39
~ • Screw
31 Motor. Complete: 40
• 1 HP. 1l5!230V. 60 Hz 732012 Rear Bearing
32 42 Nut Aange
• Slator & Housing Assembly 43 •
33 Not Available Separately • Screw
500K3 Rotor & Shaft Assembly: 44
34 H-4062-P Lock Washer
• lh HP. I 151230V, 60 Hz 45
35 • 1 HP. 1151230V, 60 Hz • Screw
End Shield 46 •
38 Front Bearing Shim Washer
38 Capacitor: 48 83912 SfNPAC® Switch
lhHP 49 Cover
50 •
I HP 51 Screw
•

* Contact factory with complete electric motor nameplate dara.

45 TROLLEY MOTOR
WITH SINPAC®
REVERSING SWITCH

32

50

FIGURE 7-4B. TROLLEY MOTOR PARTS
(1 PHASE, SINGLE SPEED)

25

19 00 • ,
~! -~~,~, , ,, ~
'
,"'-''./ / " 2A
, .".-~ 4

7! ' 2

8

6

4

Index Part Name Part Index Part Name Part
No. No. No.
I Control Panel Pri. 208. 2301460Y. 208V. No.
2 Magnetic Reversing Switch 257JlA Sec. 115V. 50/60 Hz.
JF-821 - 17
2A 24V Control 820K2 4 PrL 575V, Sec. 24V,
115V Control 820K317 5 50160 Hz JF-821-16
2B' Coil (24Y) 820K301 6
Coil (l15Y) 820K302 7 Pri. 575V, Sec. 115V. JF-821-20
3 Replacement Contact Kit 8 50160 Hz H2751
(Includes stationary & 820K300 9 H4158
movable contacts and 10' Screw H-2981-P
spring for one magnetic JF-821 - 15 Lock Washer H4802-P
reversing switch) Screw 28517
Transfonner: (20 VA.) Lock Washer H-3862
Pri, 208. 230146OV. 208V. Retainer H-5757
Sec. 24V, 50/60 Hz. Nut (Retainer)
Splice Connector

*Not Ii!ustrated FIGURE 7·5. CONTROLLER AREA (3 PHASE)
(SINGLE SPEED HOIST, SINGLE SPEED TROLLEY)

26

3A

4

Index Part Name Part Index Part Name Part
No. No. No. No.

1 Screw H·lOOS·P 6 Transformer: 00 VA) JF-82l-3
Pc;. 208. 230!460V.
2 Lock Washer H4lS8 JF-82l
Sec. 24V, 50/60 Hz
3 Magnetic Reversing Switch: Pc;. 208, 230!46OV. JF-82l-9

24V Control 820K2 Sec. IlSV, 50/60 Hz JF-82l-2
Pri.575V,
115V Control 820K3l7 36Kl
Sec. 24V, 50/60 Hz 36K2
3A Coil: Pri.575V, JF-940-7
H-6286
24V 820K30l Sec. 1l5V, 50/60 Hz
Control Box;
llSV 820K302
1; 2-Ton
38' Replacement Contact Kit 3-Ton
Jumper Wire
(Includes stationary and 7 Hole Plug

movable contacts and

springs for one magnetic

reversing switch) 820K300 8'

4 Screw H-27Sl 9

5 Panel Plate 2S7K267

*Not Illustrated FIGURE 7-6. TROLLEY CONTROL, SINGLE SPEED
(SINGLE SPEED TROLLEY, TWO SPEED HOIST)

27

Index Part Name Part Index Part Name Part
No. No. No. No.
I Screw H·275 I 4
2 Lock Washer H·41S8 5 Screw . H-1901
3 Magnetic Reversing Switch: 820K2
820K317 6 Speed Control Relay:
3A 24V Control 820K301 7
115V Control 820K302 8* 24V Control 82013
3B Coil: 9
24V 820K300 115V Control 820J4
115V I
Replacement Contact Kit Screw H-lOO5-P
(Includes stationary and
movable contacts and Panel Plate 257K267
springs for one magnetic
reversing switch) Jumper Wire JF-940-7

Transfonner:

Pri. 208. 230/460V. Sec. 24V JF-821-IS

Pri. 208, 230/460V, Sec. 115V JF-821-17

Pri. 575V, Sec. 24V JF-821-16

Pri. 575V. Sec. IISV JF-821-20

*Not illustrated.

FIGURE 7-7. TROLLEY CONTROL, TWO SPEED

28

22l~ l 2-~.~

18-~f':: 3•

l
~

20

2.

13
23

FIGURE 7-8. PUSHBUTTON
(SINGLE SPEED HOIST, SINGLE SPEED TROLLEY)

29

Index Part Name Part
No. No.
Push Button & Cable
I Assembly (Consists of PB·300.6A
Index Nos. 2 thru 27): PB·300·11A
2 6' Drop PB·300·16A
3 II' Drop PB·300·2IA
16' Drop
4 21' Drop PB-300-*A
Special Lift (*Equal JF·761
5 to P.B. Drop)
6 PB·300·6
7 Rubber Grommet PB·300-11
8 Push Button Cable Assembly: PB·300·16
9 PB·300·21
10 6' Drop
II 11' Drop PB·300··
12 16' Drop 534K98
13 21' Drop
14 Special Lift (*Equal PB·282-4
15 PB·283
16 to P.B. Drop) PB·284·2
17 Push Button Assembly PB·285
18 PB·286
19 (Consists of Index PB·287
20 Nos. 5 thru 27) PB·288
21 Enclosure PB·290
22 Cover PB·289
23 Push Button (Hoist) PB·291
24 Interlock (Single-Speed, Red) PB·301
25 Boot PB·293
26 Spring, Compression PB·294·2
27 Spring, Conical PB·295
Contact Plate, Common X6477·1
Contact Plate H·785 I
Washer, Contact H·299 I
Screw H·2992
Washer, Boot H·2993
Grommet PB·296
Cap Enclosure H-4160
"0" Ring JF·940-42
Seal PB·284·1
Screw
Screw
Screw
Warning Tag
Lock Washer
Jumper (Common)
Push Button (Trolley)

FIGURE 7-8. PUSHBUTTON
(SINGLE SPEED HOIST, SINGLE SPEED TROLLEY)

30

,, ,

N

!

; - . ---~

/~

-~

FIGURE 7-9_ PUSHBUTTON
(TWO SPEED HOIST, SINGLE SPEED TROLLEY;
SINGLE SPEED HOIST, TWO SPEED TROLLEY)

31

Index Part Name I Part Index I Part Name Part
No. No. No.
, No.
PB·290
I Push Button & Cable 12 Contact Plate, Common PB·289
PB·291
Assembly (Consists of 13 Contact Plate H·1852·P
PB·293
Index Nos. 2 thru 34): 14 Washer, Contact PB·294·2
PB·295
Two Speed Hoist, IS Screw X·6477·1
H·7851
Single Speed Trolley 534J05·* 16 Washer, Boot H·2925
H·2992
Single Speed Hoist, 17 Grommet H·2993
I PB·296
Two Speed Trolley 534JG6·* 18 Cap, Enclosure H-4160
JF·940·111
2 Rubber Grommet ,i JF-76I 19 "0" Ring PB·284·21
20 Seal 755J2
3 Push Button Cable Assembly I PBS·309·* 344J5
75511
4 Push Button Assembly 21 Screw 20UI
200116
(Consists of Index 22 Screw PB·308
PB·285
Nos. 5 thru 34) 23 Screw

Two Speed Hoist. 24 WamingTag

Single Speed Trolley 534JG5 25 Lock Washer

Single Speed Hoist, 26 Jumper

Two Speed Trolley 534JG6 27 Push Button (Trolley)

5 Enclosure PB·282-4 28 Spacer

6 Cover PB·283 29 Spring, Lower

7 Push Button (Hoist) PB·284·22 30 Insulating Bushing

8 Interlock (Two-Speed, Black) PB·285·1 31 ! Lower Contact
32 Bushing
9 Boot PB·286

10 Spring, Compression PB·287 33 2·Speed Adapter

II Spring, Conical PB·288 34 Interlock (Single Speed, Red)

=* Denotes pushbutton drop in feet. Standard lengths 6,11,16 and 21 feet.

FIGURE 7-9. PUSHBUTTON
(TWO SPEED HOIST, SINGLE SPEED TROLLEY;
SINGLE SPEED HOIST, TWO SPEED TROLLEY)

32

~~,
N

/

/,

l.
(TWo SPFIEGEUDREHO7I~~·, TWPUOSSHPBEUETDTOTRNOLLEY)

33

Index Part Name Part I
No. No.
Push Button & Cable , i
I Assembly (Consists of I ,
Index Nos. 2 thru 33)
2 5341G7·' I
3 Rubber Grommet 1F-761
4 Push Button Cable Assembly PB-309-' I,
Push Button Assembly 5341G7 I
5
6 (Consists of Index PB-282-4
7 Nos. 5 thru 33) PB-283
8 Enclosure PB-284-22
9 Cover PB-285-1
10 Push Button (Hoist) PB-286
II Interlock (Two Speed, Black) PB-287
Boot PB-288
12 I Spring, Compression PB-290
Spring, Conical PB-289
13 Contact Plate, Common PB-291
14 Contact Plate H-1852-P
15 Washer, Contact PB-293
16 Screw PB-294-2
17 Washer, Boot PB-295
18 Grommet
19 Cap. Enclosure I X-6477-1
20 "0" Ring
21 Seal H-7851
22 Screw H-2925
23 Screw H-2992
24 Screw H-2993
25 I Warning Tag PB-296
26 Lock Washer H-4160
27 Jumper 1F-940-111
28 Push Button (Trolley) PB-284-21
29 Jumper (2-Speed Common) 1F-940-42
30 Insulating Bushing 755Jl
31 Spring, Lower 34415
32 Lower Contact 20111
33 Bushing 200Jl6
2-Speed Adapter PB-308

* Denotes pushbutton drop to feet. Standard lengths _ 6, 11,

16 and 21 feet.

FIGURE 7-10. PUSHBUTTON
(TWO SPEED HOIST. TWO SPEED TROLLEY)

34

Index Part Name Part
No. No.
I Swivel Collector Assembly:
Insul-8 Type 804KI
2
Collector Kit CCK2
3 (Includes Items 3-7) CCK3
All Except 3, 5 Ton
4 3 and 5 Ton Only 802KI
5 802K2
6 Mounting Plate 803KG8
7 All Except 3, 5 Ton 806KI
3 and 5 Ton Only H-4062·P
H·3561
Arm, Mounting
Shackle, Mounting
Lock Washer
Nut

FIGURE 7-11. CURRENT COLLECTOR GROUP

. ,.
/

• •
FOR Y.- to 2-TON ONLY
FOR 3 to 5 TON ONLY.
...11

~12

Index Part Name Part Index Part Name Part
No. No. No.
I Retaining Ring No. Hand Chain Wheel
2 H-550I 7 Hand Chain (Specify Length) 33K23
3 Pinion 420KI 8 Retaining Ring 53A
4 525K2 9 Sleeve Bushing H-5527
5 Spacer Bearing C/16 Thick) lOOK6 10 Lockwasher 530K6
II Bolt H-4138
6 Gear Shaft 51KGl 12 Adapter H-2304
Sleeve and Adapter Assembly: 51KG2 13 5lK4
525KI
All Except 3, 5 Ton
3 and 5 Ton Only

Spacer Bearing C/8 Thick)

FIGURE 7-12. GEARED TROLLEY

35

COFFI G®
HOISTS

WARRANTY

Every hoist is thoroughly inspected and tested prior to modifications, or alterations made by persons other than
shipment from the factory. Should any problem factory or Coffing Authorized Warranty Repair Stations
develop. return the complete hoist prepaid to your personnel; (3) the hoist has been abused or damaged as
nearest Coffing Hoists Authorized Warranty Repair Station. a result of an accident; (4) repair parts or accessories
If inspection reveals that the problem is caused by defective other than those supplied by Coffing Hoists are used on
workmanship or material, repairs will be made without the hoist. Equipment and accessories not of the seller's
charge and the hoist will be returned, transportation prepaid. manufacture are warranted by the manufacturer.
This warranty does not apply where: (1) deterioration is
caused by normal wear, abuse, improper or inadequate Except as stated herein, Coffing Hoists makes
power supply, eccentric or side loading, overloading, no other warranties, express or implied, including
chemical or abrasive actions, improper maintenance, or warranties or merchantability and fitness for a
excessive heat; (2) problems resulted from repairs, particular purpose.

AWARNING

OVerloading and Improper Use Can Result In Injury
To Avoid Injury.

• Do not exceed workjng load limit, load rating. or capacity.
• Do not use to lift people or loads over people.
• Use only alloy chain and attachments for overhead lifting.
• Read and follow all instructions.

Coffing Hoists· Country Club Road· P,O. Box 779· Wadesboro, NC 28170 USA
Customer Service: Tel. (800) 477-5003 (704) 694-2156· FAX (800) 374-6853 (704) 694-6829

ECMT-680-5
2C 2100

Printed In USA
',",' 2000 CoffIng Hoists