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3A1872 STARTING MOTOR ASSEMBLY--24 Volt--Part 1 of 2 Part of 3A1590 Starting Motor shown on Page 42 941


ELECTRICAL AND STARTING SYSTEM
STARTING MOTOR GP
ALTERNATOR GP-CHARGING
BATTERY GP

TRACK LOADER 941 TRACK LOADER 70H
 941 TRAXCAVATOR 70H00001-02237 (MACHINE) UEH0027S 941 70H   (1979)

ELECTRICAL AND STARTING SYSTEM

STARTING MOTOR GP
STARTING MOTOR ASSEMBLY
3A-1872 STARTING MOTOR ASSEMBLY
3A-1872 STARTING MOTOR ASSEMBLY
STARTING MOTOR GROUP
3A-1590 STARTING MOTOR GROUP
STARTING MOTOR GP-ELECTRIC
7S-3622 STARTING MOTOR GP-ELECTRIC
MOTOR ASSEMBLY
9M-1662 MOTOR ASSEMBLY
9M-1662 MOTOR ASSEMBLY
 

#UEH0027S0070
 

3A-1872: STARTING MOTOR ASSEMBLY

3A1872 STARTING MOTOR ASSEMBLY--24 Volt--Part 1 of 2
Part of 3A1590 Starting Motor shown on Page 42
c216624 UEH0027S
3A1872 STARTING MOTOR ASSEMBLY Parts scheme
  For full view, you need register

Parts for your 941 TRACK LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
8. 6H-3622 [1] BOLT  
  4F-9676 [1] WASHER  
9. 1D-4719 [4] NUT  
  6F-9005 [4] NUT (Jam)  
  3B-4508 [4] LOCKWASHER  
  7F-0560 [3] WASHER  
31. 3A-4899 [1] ADAPTER (T)  
  3A-1559 A [1] KIT (brushes) A  
  3A-2288 B-1 [1] KIT (hardware-part 1) B-1  
  3A-2289 B-2 [1] KIT (hardware-part 2) B-2  
  3A-2290 B-3 [1] KIT (hardware-part 3) B-3  
  3A-1565 C [1] KIT (bearing) C  
  3A-1567 D [1] KIT (lever housing assem.) D  
  3A-2859 E [1] KIT (clutch assem.) E  
    -OR-
  3A-4900 T [1] KIT (clutch assem.) T  
  3A-1631 F [1] KIT (pinion assem.) F  
  3A-1868 G [1] KIT (support and brush assem.) G  
  3A-1870 H [1] KIT (drive housing assem.) H  
  3A-1871 I [1] KIT (frame assem.) I  
  3A-3956 J [1] KIT (pinion) J  
 

#UEH0027S0071
 

3A-1872: STARTING MOTOR ASSEMBLY

3A1872 STARTING MOTOR ASSEMBLY--24 Volt--Part 2 of 2
Part of 3A1590 Starting Motor shown on Page 42
c209927 UEH0027S
3A1872 STARTING MOTOR ASSEMBLY Parts scheme
  For full view, you need register

Parts for your 941 TRACK LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
26. 3A-4580 [1] COIL ASSEM. (field)  
  3A-1555 J [1] KIT (Switch Assem.) J  
  3A-1556 K [1] KIT (Contact) K  
  3A-1557 L [1] KIT (Carcase Assem.) L  
  3A-1560 M [1] KIT (Terminal Assem.) M  
  3A-1568 N [1] KIT (Lever Assem.) N  
  3A-1633 O [1] KIT (Seals) O  
  3A-1648 P [1] KIT (Coil Assem.) P  
    -or-
  3A-4804 S [1] KIT (Coil Assem.) S  
  3A-1867 Q [1] KIT (Armature Assem.) Q  
  3A-2291 R [1] KIT (Cover Contact) R  
  C   INDICATES CHANGE
  R   REMFG PART MAY BE AVAILABLE
 

#UEH0027S0072
 

3A-1590: STARTING MOTOR GROUP

3A1590 STARTING MOTOR GROUP--24 Volt
3A1872 Motor parts are shown on Pages 40D and 41
Refer also to Page 108 for special parts
c203694 UEH0027S
3A1590 STARTING MOTOR GROUP Parts scheme
  For full view, you need register

Parts for your 941 TRACK LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 8S-2332 C [3] BOLT  
  3B-4510 [3] LOCKWASHER  
2. 4H-7869 [1] GASKET  
3. 3A-1872 Y [1] MOTOR ASSEM.  
    (Separate Illustration)
4. 9F-4337 [1] WIRE ASSEM.  
    (Includes)
5. 7F-8032 [1] TERMINAL  
6. 9F-5509 [2] INSULATOR  
7. 9F-3068 [1] TERMINAL  
  C   INDICATES CHANGE
  Y   SEPARATE ILLUSTRATION
 

#UEH0027S0073
 

GENERATOR

GENERATOR--24 Volt, 15 Ampere
Serial No. 70H218, 233 to 239, 245 and 70H257 to 70H288 inclusive
3A1873 Generator parts are shown on Pages 44 & 44A
Refer also to Page 109 for special parts
c129675 UEH0027S
None GENERATOR Parts scheme
  For full view, you need register

Parts for your 941 TRACK LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 7S-9750 [1] STRAP  
2. 3H-5368 [1] BOLT  
  3B-4507 [1] LOCKWASHER  
  2S-0932 [2] WASHER  
3. 0S-1595 [1] BOLT  
4. 3B-4508 [2] LOCKWASHER  
5. 7S-9749 [1] PULLEY  
6. 9S-1240 [1] NUT ASSEM.  
7. 3A-2046 [1] BRACKET  
8. 9S-1805 [1] SUPPORT ASSEM.  
9. 3B-4506 [3] LOCKWASHER  
10. 2B-2006 [1] BOLT  
11. 6M-9613 [1] BOLT  
  2M-0849 [1] WASHER  
12. 3A-1873 Y [1] GENERATOR ASSEM.  
    (See Separate Illustration)
13. 1D-4719 [1] NUT  
14. 1A-5964 [2] BOLT (4.50" long)  
  0T-0573 [1] BOLT (2.75" long)  
  2M-7077 [1] SPACER (.406" I.D.)  
  2H-6488 [1] BOLT (5" long)  
  3A-2079 [1] SPACER (.515" I.D.)  
15. 0T-0431 [2] WASHER (.104" Thick)  
  6J-0450 [2] SHIM (.031" Thick)  
  Y   SEPARATE ILLUSTRATION
 

#UEH0027S0074
 

GENERATOR

GENERATOR--24 Volt, 15 Ampere
Serial No. 70H1 to 217, 219 to 232, 240 to 244, 246 to 256 and
70H289-Up. 3A1873 Generator parts are shown on Pages 44 & 44A
Refer also to Page 109 for special parts
c131028 UEH0027S
None GENERATOR Parts scheme
  For full view, you need register

Parts for your 941 TRACK LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 7S-9750 [1] STRAP  
2. 3H-5368 [1] BOLT  
  3B-4507 [1] LOCKWASHER  
  2S-0932 [2] WASHER  
3. 0S-1595 [1] BOLT  
4. 3B-4508 [2] LOCKWASHER  
5. 7S-9749 [1] PULLEY  
6. 9S-1240 [1] NUT ASSEM.  
7. 9S-2268 [1] BRACKET  
8. 4B-4280 [1] WASHER  
9. 0S-1608 [2] BOLT  
  3B-4506 [2] LOCKWASHER  
10. 2B-2006 [1] BOLT  
11. 6M-9613 [1] BOLT  
  2M-0849 [1] WASHER  
12. 3A-1873 Y [1] GENERATOR ASSEM.  
    (See Separate Illustration)
13. 1D-4719 [1] NUT  
  Y   SEPARATE ILLUSTRATION
 

#UEH0027S0075
 

3A-1873: GENERATOR ASSEMBLY

3A1873 GENERATOR ASSEMBLY--24 Volt, 15 Ampere--Part 1 of 2
Part of Generator shown on Page 43
c106836 UEH0027S
3A1873 GENERATOR ASSEMBLY Parts scheme
  For full view, you need register

Parts for your 941 TRACK LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
15. 4B-2051 [4] NUT  
  5L-3870 [2] LOCKWASHER  
  3F-3711 [2] WASHER (Steel)  
    KITS CONSISTS OF PARTS MARKED WITH CORRESPONDING LETTERS
  3A-1258 [1] KIT (Carcase Assem.) A  
  3A-1306 [1] KIT (Brushes) B  
  3A-1307 [1] KIT (Field Coil Assem.) C  
  3A-1308 [1] KIT (Support Assem.) D  
  3A-1309 [1] KIT (Terminal Assem.) E  
  3A-1311 [1] KIT (Hardware) F  
 

#UEH0027S0076
 

3A-1873: GENERATOR ASSEMBLY

3a1873 GENERATOR ASSEMBLY--24 Volt, 15 Ampere--Part 2 of 2
Part of Generator shown on Page 43
c106837 UEH0027S
3A1873 GENERATOR ASSEMBLY Parts scheme
  For full view, you need register

Parts for your 941 TRACK LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
10. 6H-3622 [1] BOLT  
  4F-9676 [1] LOCKWASHER  
16. 1B-8707 [1] KEY  
17. 7H-0387 [1] NUT  
18. 7F-7621 [1] WASHER  
19. 3A-1259 [1] ARMATURE ASSEM.  
    NOTE: KITS CONSIST OF PARTS MARKED WITH CORRESPONDING LETTERS
  3A-1260 [1] KIT (Drive End Plate Assem.) G  
  3A-1287 [1] KIT (Commutator End Plate) H  
  3A-1288 [1] KIT (Fan) J  
  3A-1303 [1] KIT (Cover Assem.) K  
  3A-1304 [1] KIT (Bearings) L  
  3A-1305 [1] KIT (Seals) M  
  3A-1310 [2] KIT (Stud Assem.) N  
 

#UEH0027S0077
 

6K-5950: ENGINE WIRING

ENGINE WIRING (6K5950)
c107213 UEH0027S
6K5950 ENGINE WIRING Parts scheme
  For full view, you need register

Parts for your 941 TRACK LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 6K-7754 [1] BOX  
2. 0L-1351 [2] BOLT  
3. 3B-4506 [3] LOCKWASHER  
4. 6K-5272 [1] HARNESS ASSEM.  
5. 3M-6547 [1] SHELL  
6. 3M-6533 [1] WASHER  
7. 3M-6018 [1] TERMINAL  
8. 6K-7361 [1] DISCONNECT  
9. 6K-7360 [1] DISCONNECT  
10. 6K-5182 [1] GROMMET  
11. 6B-2864 [1] TERMINAL  
12. 6H-6756 [2] TERMINAL  
13. 6K-5125 [1] TERMINAL  
14. 4K-6494 [1] TERMINAL  
    (Parts of 6K5272 Harness Assem.)
15. 0T-0102 [1] BOLT  
16. 3A-1534 [2] CLIP  
17. 6K-5210 [1] BRACKET ASSEM.  
18. 9F-6445 [2] NUT  
    (Part of 6K5210 Bracket Assem.)
19. 1B-4330 [2] NUT  
20. 3B-4504 [2] LOCKWASHER  
21. 4B-4278 [2] WASHER  
22. 3A-1975 [1] GROMMET  
 

#UEH0027S0078
 

3A-1419: BATTERY AND WIRING

BATTERY AND WIRING (3A1419 N/S)--24 Volt--Part 1 of 3
c129959 UEH0027S
3A1419 BATTERY AND WIRING Parts scheme
  For full view, you need register

Parts for your 941 TRACK LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 3B-4506 [5] LOCKWASHER  
2. 1D-4717 [1] NUT  
3. 4K-5803 [3] TIE  
4. 0S-0509 [4] BOLT  
5. 5K-8451 [1] CLIP  
6. 5K-9393 [1] COVER  
7. 5K-0461 [2] CLIP  
8. 1S-0724 [1] CLIP  
9. 6K-7757 [1] HOSE  
  4K-5253 [2] SLEEVE  
10. 4K-6502 [1] FITTING  
11. 5K-7088 [1] CABLE  
12. 3A-1874 [1] REGULATOR ASSEM.  
13. 3A-1711 [1] KIT LEAD ASSEM.  
14. 3A-1735 [1] KIT REG. SHOCK MOUNT  
15. 9F-6580 [3] BOLT  
16. 3B-4504 [3] LOCKWASHER  
17. 1B-4330 [3] NUT  
18. 4B-1237 [1] SCREW  
19. 4B-2049 [4] NUT  
20. 3H-0240 [1] WASHER  
21. 3B-4502 [4] LOCKWASHER  
    (Parts of 3A1874 Assem.)
22. 6K-8852 [1] CABLE ASSEM.  
23. 2M-0913 [1] TERMINAL  
24. 3D-2098 [1] TERMINAL  
25. 1M-6119 [1] BOLT  
26. 1M-6120 [1] NUT  
    (Parts of 6K8852 Assem.)
27. 6K-4358 [1] CABLE ASSEM.  
28. 2M-0912 [1] TERMINAL  
29. 5K-9372 [1] CONDUIT  
30. 1M-4983 [1] TERMINAL  
31. 1M-6120 [1] NUT  
32. 1M-6119 [1] BOLT  
33. 1S-4915 [2] LINER  
    (Parts of 6K4358 Assem.)
34. 9M-8406 [1] CLIP  
35. 0S-1594 [1] BOLT  
 

#UEH0027S0079
 

3A-1419: BATTERY AND WIRING

BATTERY AND WIRING (3A1419 N/S)--24 Volt--Part 2 of 3
5K9348 Harness parts are shown on Page 50
c138914 UEH0027S
3A1419 BATTERY AND WIRING Parts scheme
  For full view, you need register

Parts for your 941 TRACK LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 0T-0102 [5] BOLT  
2. 3B-4506 [9] LOCKWASHER  
3. 0S-1571 [2] BOLT  
4. 5K-8451 [1] CLIP  
5. 0S-0509 [2] BOLT  
6. 9F-6580 [4] BOLT  
7. 3B-4504 [12] LOCKWASHER  
8. 4B-9302 [1] CLIP  
9. 1D-4717 [1] NUT  
10. 6K-4355 [8] ROD  
11. 4B-4276 [8] WASHER  
12. 1B-4330 [8] NUT  
13. 3B-4607 [8] COTTER PIN  
14. 4S-9261 [2] BATTERY  
15. 4M-1111 [2] MAT  
16. 5K-6971 [2] BRACKET ASSEM.  
17. 9F-2978 [1] NUT  
18. 6K-8780 [1] CABLE ASSEM.  
19. 2M-0913 [2] TERMINAL  
20. 1F-7307 [1] AMMETER  
21. 4K-8030 [2] CLIP  
22. 5M-2555 [1] BREAKER  
23. 5M-6668 [2] SCREW  
24. 3B-4501 [2] LOCKWASHER  
25. 7S-6402 [1] SWITCH ASSEM.  
  7S-5432 [1] KNOB  
26. 8S-7713 C [1] SWITCH ASSEM.  
  8F-3437 [1] LEVER  
  5L-7200 [1] SCREW  
  3B-4501 [1] LOCKWASHER  
27. 5K-9348 Y [1] HARNESS ASSEM.  
    (Separate Illustration)
  C   INDICATES CHANGE
  Y   SEPARATE ILLUSTRATION
 

Information:

General Service Information
Introduction
DELCO REMY CRANKING MOTORS 30-MT, 35-MT, 40-MT, 50-MT SERIES
Delco Remy
DELCO REMY CRANKING MOTORS 30-MT, 35-MT, 40-MT, 50-MT SERIES
Engine News
Caterpillar Remanufactured Electric Starting Motors Are Improved {1453}
2011/05/16
Special Instruction
Installation of Electric Starting Motors{1453}
Installation of Electric Starting Motors{1453}
Caterpillar PRELUB<SUP>&reg;</SUP> Diagnostics{1469}
Caterpillar PRELUB® Diagnostics{1469}
Starting Motor Solenoid - Replace {1467}
Starting Motor Solenoid - Replace {1467}
Installation of New Shift Lever Assembly for All Starter Motors {1453}
Installation of New Shift Lever Assembly for All Starter Motors {1453}
Procedure to Install the Insulator on to Series Starters on All Engines {1453}
Procedure to Install the Insulator on to Series Starters on All Engines {1453}
Installation of Repair Kit-Solenoid Plunger Assembly on All Engines {1453}
Installation of Repair Kit-Solenoid Plunger Assembly on All Engines {1453}
Procedure to Install Terminal Kit on All Engines {1453}
Procedure to Install Terminal Kit on All Engines {1453}
Procedure to Install Brush Holder Assembly in All Engines {1453}
Procedure to Install Brush Holder Assembly in All Engines {1453}
Procedure to Replace Armature of Starter Motor On All Cat<SUP>&reg;</SUP> Products {1408, 1450, 1453}
Procedure to Replace Armature of Starter Motor On All Cat® Products {1408, 1450, 1453}
Procedure to Replace Commutator End (CE) Housing of Starter Motor On All Cat<SUP>&reg;</SUP> Products {1408, 1450, 1453}
Procedure to Replace Commutator End (CE) Housing of Starter Motor On All Cat® Products {1408, 1450, 1453}
Procedure to Replace Drive Assembly of Starter Motor On All Cat<SUP>&reg;</SUP> Products {1453}
Procedure to Replace Drive Assembly of Starter Motor On All Cat® Products {1453}
Specifications
Starter Motors
3304 VEHICULAR ENGINE
Starter Magnetic Switches
3304 VEHICULAR ENGINE
Starter Solenoids
3304 VEHICULAR ENGINE
Starting Motor
37-MT, 41-MT, and 42-MT Series Starting Motors
Systems Operation
General Information
37-MT, 41-MT, and 42-MT Series Starting Motors
Component Description
37-MT, 41-MT, and 42-MT Series Starting Motors
Normal Operation
37-MT, 41-MT, and 42-MT Series Starting Motors
Testing and Adjusting
No Load - Test
37-MT, 41-MT, and 42-MT Series Starting Motors
Brush and Brush Holder - Check
37-MT, 41-MT, and 42-MT Series Starting Motors
Pinion Clearance - Adjust
37-MT, 41-MT, and 42-MT Series Starting Motors
Starting Motor Solenoid - Test
37-MT, 41-MT, and 42-MT Series Starting Motors
Troubleshooting
Engine Does Not Crank with Starting Motor On and Pinion Engaging Ring Gear
37-MT, 41-MT, and 42-MT Series Starting Motors
Starting Motor Does Not Turn or Turns Slowly
37-MT, 41-MT, and 42-MT Series Starting Motors
General Information
37-MT, 41-MT, and 42-MT Series Starting Motors
Disassembly and Assembly
Starting Motor - Disassemble - 37-MT and 41-MT
37-MT, 41-MT, and 42-MT Series Starting Motors
General Information
37-MT, 41-MT, and 42-MT Series Starting Motors
Starting Motor - Assemble - 37-MT and 41-MT
37-MT, 41-MT, and 42-MT Series Starting Motors
Starting Motor - Disassemble - 42-MT
37-MT, 41-MT, and 42-MT Series Starting Motors
Starting Motor - Assemble - 42-MT
37-MT, 41-MT, and 42-MT Series Starting Motors
Service Magazine
Caterpillar Electric Starting Motors{1453,1407}
1982/03/22
Replacement Of Brush Holder Pins In Delco-Remy Electric Starting Motors{1453}
1982/06/28
Adjust Bosch Solenoid If Replaced Or Reinstalled{1407,1453}
1986/11/10
New Electric Starting Motor Has Longer Brush Life{1453}
1977/11/14
12-Volt Starter Solenoid Available For 7T2265 And 7T2266 Starting Motors{1407}
1987/02/16
Modification To Prevent Starter From Remaining Engaged With Flywheel After Engine Starts{1400,1450}
1987/03/16
Testing The Starter On The Engine{1401,1450}
1987/05/04
Remanufactured Heavy-Duty Starters And High-Amp Alternators{1405,1453}
1987/05/25
Be Sure Battery Cable-To-Starter Connection Has Correct Torque{1453}
1988/03/14
Magnetic Switches (Starter Relays) Improved{1450}
1988/03/14
Two Plug Assemblies (Booster Cables) Are Available To Start Machines{1401,1453}
1979/11/05
Limitations On Engine Cranking Time{1453,1401}
1989/03/27
Causes And Effects Of Low Battery Voltage On Electric Starters{1401,1453,1467}
1989/04/24
New PRELUB Systems Available For Medium To Large Caterpillar Construction Equipment {1319}
1992/04/06
0R5207 Remanufactured Starter May Not Fit In Some Applications{1453}
1993/11/29
Special Instruction, REHS1129, "Starting Motor Solenoid - Replace" Is Available {1467}
2001/08/13
Improved Remanufactured Heavy-Duty Electrical Starting Motors Are Available {1453}
2001/10/29
Field Replacement of Remanufactured Starting Motors and Remanufactured Alternators {1405, 1453}
2001/11/19
New Starting Motors Used {1453}
2002/05/13
Examine Failed Starting Motors to Understand the Reason for Failure {1453}
2002/10/28

Caterpillar Parts SIS Catalog 941 :

OIL FILTER ASSEMBLY
7S-6639 OIL FILTER ASSEMBLY
OIL FILTER AND LINES GROUP
5S-6683 OIL FILTER AND LINES GROUP
OIL FILTER ASSEMBLY
9S-1806 OIL FILTER ASSEMBLY
OIL FILTER AND LINES GROUP
5S-6683 OIL FILTER AND LINES GROUP
GEAR PUMP ASSEMBLY
7S-1849 GEAR PUMP ASSEMBLY
OIL FILTER AND LINES GROUP
5S-6683 OIL FILTER AND LINES GROUP
OIL PUMP ASSEMBLY
7S-1849 OIL PUMP ASSEMBLY
OIL PUMP GROUP
5S-6446 OIL PUMP GROUP
3A-1872 STARTING MOTOR ASSEMBLY
STARTING MOTOR GROUP
3A-1590 STARTING MOTOR GROUP
GENERATOR
GENERATOR
GENERATOR
GENERATOR
GENERATOR ASSEMBLY
3A-1873 GENERATOR ASSEMBLY
3A-1873 GENERATOR ASSEMBLY
ENGINE WIRING
6K-5950 ENGINE WIRING
BATTERY AND WIRING
3A-1419 BATTERY AND WIRING

Truck sale:

Caterpillar 941, Construction
3,000 
Caterpillar 941, Construction
- track loaders
MICHIGAN CAT
7038 - CAT 941
 
7038 - CAT 941

avspare
1974 CAT 941
USD $13,750 
1974 CAT 941

WESTERN MICHIGAN EQUIPMENT
Traverse City, Michigan
1980 CAT 941
Call 
1980 CAT 941

DDG Equipment
1974 CAT 941
USD $5,500 
1974 CAT 941

RP Equipment
Allentown, Pennsylvania
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AVSpare.com is in no way associated with any of the manufacturers we have listed. All manufacturer's names and descriptions are for reference only. Cat® and Caterpillar® are registered trademarks of Caterpillar, Inc.