Chamberlain H Manual
ITEM PART# DESCRIPTION
1 13-10024 Limit Nut
2 23-10041 Limit Switch
3 K75-35626 Cover
4 21-14182 Transformer, 115/230 Volts, 20Va
21-35057 Transformer, 460 Volts, 40Va
21-35077 Transformer, 575 Volts, 40Va
5 29-31244 Relay, 24 Vdc DPST (A & B Relay) All Operators
6 29-31245 Relay, 12 Vdc SPDT (C & D Relay) 3 Phase Only
29-31229 Relay, 24 Vdc SPDT (C Relay) 1 Phase Only
7 K74-31243 MOV 580 Volts
8 K79-15016-1 RPM Sensor Assembly
9 K1A6837 Logic Board - L4
10 K2A761 Coaxial Cable
11 K1C3196-3 Antenna
12 42-31247 Terminal Block
13 42-10040 Terminal Block, Radio
To order a complete electrical box replacement kit, add a K-Prefix to the model
number of your operator for example:
H5011L4 (Operator) = K-H5011L4 (Electrical Box Kit)
ITEM PART# DESCRIPTION
K1 K72-14130-1 Limit Shaft Kit
Complete with: Limit Shaft, Limit Nuts, Limit Bearings, Limit
Sprocket, Interrupter Cup, Shim Washers, Compression Ring,
Roll Pin and E-Rings.
K2 K72-12515-1 Limit Switch Kit
Complete with: Limit Nut Retainer, Switch Plates, Backup
Plate, Depress Plates, Limit Switches, Standoffs, Screws and
Locknuts.
1
4
76
10
5
2
11
K2
K1
3
9
8
12
13
Individual Parts
Electrical Box Replacement Kits
Service Kits
Replacement Parts
Logic 4 Operators
Models J, H, and HJ
Electrical Box
1-800-528-2806 www.liftmaster.com
* Call for Pricing and Availability
2
13
15
17
16
14
3
9
11
2
10
12
2
1
43
8
5
6
6
7
K1
K2
Model J
ITEM PART# DESCRIPTION
1 Clutch Shaft - J
(Available only in complete
Clutch Shaft Kit)
2 12-19504 Keyed Flange Bearing 1"
3 15-30822 Dual Sprocket 32/14*
4 15-19484 Splined Core Sprocket
5 18-30957 Compression Spring
6 K75-19985 Pulley Assembly
7 39-10167 Clutch Pad
8 80-19846 Splined Hub, J Disconnect
9 15-19478 Sprocket Assembly
10 15-48B18LGE Sprocket 48B18x1"
11 15-50B12LGH Sprocket 50B12x1"
12 16-5L304 Cogged Belt 30.4"
13 K75-19978-L Frame Kit (LH)
14 K75-19978-R Frame Kit (RH)
15 K75-19977 J Arm Kit
16 17-6014 Motor Pulley
ITEM PART# DESCRIPTION
K1 K72-19975 Clutch Shaft Kit
Complete with: Clutch Shaft,
1" Keyed Flange Bearings, Dual
Sprocket 32/14, Splined Core
Sprocket, E-Ring, Compression
Spring, Pulley Assembly, Washers,
Thrust Bearing, Retaining Ring,
Splined Hub and Roll Pin.
K2 K72-19974 Output Shaft Kit
Complete with: Output Shaft,
Sprocket Assembly, Dual Sprocket
32/14, Sprocket 48B18x1" Bore,
Sprocket 50B12x1" Bore, Ring,
Washers, Set Screw, Roll Pin and
Thin Walled Receiver.
NOT SHOWN
71B120 Brake Kit, 115 Volt Models
71B208 Brake Kit, 208 Volt Models
71B240 Brake Kit, 230-460 Volt Models
71B575 Brake Kit, 575 Volt Models
Complete with: Brake Hub Kit,
Brake Release Lever, Brake Disk,
Spring Cup, Studs, Compression
Springs, Brake Solenoid, Solenoid
Cover, Spacers, Mounting Plate,
Pressure Plate, Feather Key and
Conduit.
Individual Parts
Service Kits
ITEM PART# DESCRIPTION
17
1/3HP K20-1033B-2LP Motor - models
J3311L4, J3321L4
K20-3033B-4P Motor - models
J3323L4, J3343L4
K20-3033M-5 Motor - model
J3353L4
1/2HP K20-1050B-2LP Motor - models
J5011L4, J5021L4
K20-3050B-4P Motor - models
J5023L4, J5043L4
K20-3050M-5 Motor - model
J5053L4
3/4HP K20-1075B-2P Motor - models
J7511L4, J7521L4
K20-3075B-4P Motor - models
J7523L4, J7543L4
K20-3075M-5 Motor - model
J7553L4
1HP K20-1100B-2LP Motor - models
J1011L4, 1021L4
K20-3100B-4P Motor - models
J1023L4, J1043L4
K20-3100M-5 Motor - model
J1053L4
NOT SHOWN
19-48047M Roller Chain, #48x47
Pitch with Master Link
* Call for Pricing and Availability
3
18
15
13
10
2
15
16
17
3
9
4
3
1
11
7
7
12
5
6
2
K1
K2
19
8
8b
8c
8a
ITEM PART# DESCRIPTION
1 11-19471 Clutch Shaft - H
2 12-19504 Keyed Flange Bearing 1"
3 15-30822 Dual Sprocket 32/14*
4 15-19481 Sprocket, 14 Tooth
5 18-11379 Compression Spring
6 75-10884 Chain Wheel Assembly
7 K75-19985 Pulley Assembly
8 10-10882 Chain Guide
8a 12-10883 Nyliner Bearing
8b 12-10882 Bushing .753 I.D. x 5/8"
8c 80-10883 Washer Spacer
9 15-19478 Sprocket Assembly
10 15-48B18LGE Sprocket 48B18x1"
11 15-50B12LGH Sprocket 50B12x1"
12 16-5L304 Cogged Belt 30.4"
13 K75-19978-L Frame Kit (LH)
14 K75-19978-R Frame Kit (RH)
15 K75-19981 Arm Kit - H
16 17-6014 Motor Pulley
ITEM PART# DESCRIPTION
K1 K72-19979 Clutch Shaft Kit
Complete with: Clutch Shaft, Keyed
Flange Bearing, Dual Sprocket 32/14,
14 Tooth Sprocket, E-Ring,
Compression Spring, Chain Wheel
Assembly, Pulley Assembly, Chain
Guide Assembly, Shim Washer,
Washer, Thrust Washer and Roll
Pins.
K2 K72-19974 Output Shaft Kit
Complete with: Output Shaft,
Sprocket Assembly, Dual Sprocket
32/14, Sprocket 48B18x1", Sprocket
50B12x1", Ring, Washer, Key, Set
Screw, Roll Pin and Thin Walled
Receivers.
NOT SHOWN
71-B120H Brake Kit, 115 Volt Models
71-B208H Brake Kit, 208 Volt Models
71-B240H Brake Kit, 230-460 Volt Models
71-B575H Brake Kit, 575 Volt Models
Complete with: Brake Hub Kit, Brake
Release Lever, Brake Disk, Spring
Cup, Studs, Compression Springs,
Brake Solenoid, Solenoid Cover,
Spacers, Mounting Plate, Pressure
Plate, Feather Key and Conduit.
K73-HFRAME-L H Frame Kit, Left Hand
K73-HFRAME-R H Frame Kit, Right Hand
Model H
Individual Parts
Service Kits
ITEM PART# DESCRIPTION
17
1/3HP K20-1033B-2LP Motor - models
H3311L4, H3321L4
K20-3033B-4P Motor - models
H3323L4, H3343L4
K20-3033M-5 Motor - model
H3353L4
1/2HP K20-1050B-2LP Motor - models
H5011L4, H5021L4
K20-3050B-4P Motor - models
H5023L4, H5043L4
K20-3050M-5 Motor - model
H5053L4
3/4HP K20-1075B-2P Motor - models
H7511L4, H7521L4
K20-3075B-4P Motor - models
H7523L4, H7543L4
K20-3075M-5 Motor - model
H7553L4
1HP K20-1100B-2LP Motor - models
H1011L4, H1021L4
K20-3100B-4P Motor - models
H1023L4, H1043L4
K20-3100M-5 Motor - model
H1053L4
18 23-10916 Interlock Switch
19 39-10167 Clutch Disk
NOT SHOWN
19-48047M Roller Chain, #48x47
Pitch with Master Link
12-10891 1" Flange Ball Bearing
2
20
21
17
16
13
14
22
12
3
1
3
46
19
18
8
15
8
2
5
7
11
K1
K2
9
10
10C
10B
10A
Model HJ
ITEM PART# DESCRIPTION
1 11-19473 Clutch Shaft - HJ
2 12-19504 Keyed Flange Bearing 1"
3 15-30822 Dual Sprocket 32/14*
4 15-19484 Splined Core Sprocket
5 18-11379 Compression Spring
6 18-30957 Compression Spring
7 75-10884 Chain Wheel Assembly
8 K75-19985 Pulley Assembly
9 39-10167 Clutch Pad
10 10-10882 Chain Guide
10A 12-10883 Nyliner Bearing
10B 12-10882 Bushing .753 I.D. x 5/8"
10C 80-10883 Washer Spacer
11 80-19846 Splined Hub
12 15-19478 Sprocket Assembly
13 15-48B18LGE Sprocket 48B18x1"
14 15-50B12LGH Sprocket 50B12x1"
15 16-5L304 Cogged Belt 30.4"
16 K75-19978-L Frame Kit (LH)
17 K75-19978-R Frame Kit (RH)
18 K75-19977 Arm Kit - Right
19 K75-19981 Arm Kit - Left
20 17-6014 Motor Pulley
ITEM PART# DESCRIPTION
K1 K72-19982 Clutch Shaft Kit
Complete with: Clutch Shaft, Keyed
Flange Bearing, Dual Sprocket 32/14,
Splined Core Sprocket, E-Ring,
Compression Spring, Pulley
Assembly, Thick Washer, Thrust
Bearing, Retaining Ring, Splined
Hub, Washer and Roll Pin.
K2 K72-19974 Output Shaft Kit
Complete with: Output Shaft,
Sprocket Assembly, Dual Sprocket
32/14, Sprocket 48B18x1", Sprocket
50B12x1", E-Ring, Washer, Key, Set
Screw 5/16"-18, Roll Pin and Thin
Walled Receiver.
NOT SHOWN
71-B120H Brake Kit, 115 Volt Models
71-B208H Brake Kit, 208 Volt Models
71-B240H Brake Kit, 230-460 Volt Models
71-B575H Brake Kit, 575 Volt Models
Complete with: Brake Hub Kit, Brake
Release Lever, Brake Disk, Spring
Cup, Studs, Compression Springs,
Brake Solenoid, Solenoid Cover,
Spacers, Mounting Plate, Pressure
Plate, Feather Key and Conduit.
K73-HJFRAME-L HJ Frame Kit, Left Hand
K73-HJFRAME-R HJ Frame Kit, Right Hand
Individual Parts
Service Kits
© 2010, The Chamberlain Group, Inc.
01-35673-2B All Rights Reserved
ITEM PART# DESCRIPTION
21
1/3HP K20-1033B-2LP Motor - models
HJ3311L4, HJ3321L4
K20-3033B-4P Motor - models
HJ3323L4, HJ3343L4
K20-3033M-5 Motor - model
HJ3353L4
1/2HP K20-1050B-2LP Motor - models
HJ5011L4, HJ5021L4
K20-3050B-4P Motor - models
HJ5023L4, HJ5043L4
K20-3050M-5 Motor - model
HJ5053L4
3/4HP K20-1075B-2P Motor - models
HJ7511L4, HJ7521L4
K20-3075B-4P Motor - models
HJ7523L4, HJ7543L4
K20-3075M-5 Motor - model
HJ7553L4
1HP K20-1100B-2LP Motor - models
HJ1011L4, HJ1021L4
K20-3100B-4P Motor - models
HJ1023L4, HJ1043L4
K20-3100M-5 Motor - model
HJ1053L4
22 23-10916 Interlock Switch
NOT SHOWN
19-48047M Roller Chain, #48x47
Pitch with Master Link
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