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2Y1920 STARTING MOTOR GP-ELECTRIC 24 VOLT PART OF 2Y1921 STARTING MOTOR-ELECTRIC 120B MOTOR GRADER


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

MOTOR GRADER 120B MOTOR GRADER 32C
 120B MOTOR GRADER 32C00100-UP (MACHINE) POWERED BY 3306 ENGINE ZEBP1394 120B 32C   (1981)

ELECTRICAL AND STARTING SYSTEM

STARTING MOTOR GP
STARTING MOTOR GP-ELECTRIC
2Y-1921 STARTING MOTOR GP-ELECTRIC
STARTING MOTOR GP-ELECTRIC
2Y-1920 STARTING MOTOR GP-ELECTRIC
 

#ZEBP13940120
 

2Y-1920: STARTING MOTOR GP-ELECTRIC

2Y1920 STARTING MOTOR GP-ELECTRIC
24 VOLT
PART OF 2Y1921 STARTING MOTOR-ELECTRIC
c314445 ZEBP1394
2Y1920 STARTING MOTOR GP-ELECTRIC Parts scheme
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Parts for your 120B MOTOR GRADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 2Y-2373 [1] PINION  
2. 2Y-2374 [1] BAFFLE  
3. 2Y-2375 [1] SUPPORT AS  
4. 2Y-2376 [1] SEAL  
5. 2Y-2377 [1] BEARING  
6. 2Y-2378 [1] SLEEVE  
7. 2Y-2379 [1] BEARING  
8. 2Y-2380 [1] CLUTCH AS  
9. 2Y-2384 [1] ARMATURE AS  
10. 2Y-2385 [1] BEARING  
11. 2Y-2386 [1] COIL AS  
12. 2Y-2387 [1] STEM AS  
13. 2Y-2390 [8] SCREW  
    -OR-
  2Y-7497 CM [8] SCREW  
14. 2Y-2391 [1] STUD  
15. 2Y-2392 [1] SUPPORT AS  
16. 2Y-2393 [1] TERMINAL (POS)  
17. 2Y-2394 [1] TERMINAL (NEG)  
18. 2Y-2396 [1] COVER  
19. 2Y-2397 [1] SWITCH AS (SOLENOID)  
20. 2Y-2398 [1] SWITCH AS (SOLENOID)  
21. 2Y-2399 [3] STUD  
22. 2Y-2382 [2] SCREW  
23. 2Y-2383 [1] SEAL  
24. 2Y-2858 [1] BUSHING  
25. 2Y-5785 C [1] NUT  
  2Y-5786 C [1] WASHER  
   
    THE FOLLOWING REPAIR
    KITS ARE AVAILABLE:
  2Y-1799 [1] KIT-BRUSH  
  2Y-2400 [1] KIT-TERMINAL  
  2Y-5024 [1] KIT-MISCELLANEOUS  
  C   CHANGE FROM PREVIOUS TYPE
  M   METRIC PART
 

#ZEBP13940121
 

2Y-4212: ALTERNATOR GP-CHARGING

2Y4212 ALTERNATOR GP
S/N 32C100-1555
PART OF 2Y2935 ALTERNATOR
c324181 ZEBP1394
2Y4212 ALTERNATOR GP-CHARGING Parts scheme
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Parts for your 120B MOTOR GRADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 2Y-3316 [1] COVER AS  
2. 2Y-3317 [1] STATOR  
3. 2Y-3318 [1] DISC  
4. 2Y-3319 [1] FAN  
5. 2Y-3321 [1] BEARING  
6. 2Y-3322 [1] ROTOR  
7. 2Y-3323 [1] COVER AS  
8. 2Y-3324 [1] BEARING  
9. 2Y-3392 [1] CAPACITOR AS  
10. 2Y-3325 [4] SCREW  
11. 3B-4502 [4] LOCKWASHER  
12. 2Y-3326 [4] WASHER  
13. 2Y-3344 [1] LOCKWASHER  
   
    THE FOLLOWING REPAIR
    KITS ARE AVAILABLE:
  2Y-3327 [1] KIT-ROTOR  
  2Y-3328 [1] KIT-BRUSH & SPRING  
  2Y-3436 [1] KIT-SCREW (D+)  
  2Y-3333 [1] KIT-SCREW  
  2Y-3334 [1] KIT-SCREW  
  2Y-3437 [1] KIT-SCREW (DF)  
  2Y-3438 [1] KIT-RECTIFIER SCREW (MOUNTING)  
 

#ZEBP13940122
 

2Y-8945: ALTERNATOR GP-CHARGING

2Y8945 ALTERNATOR GP
28 VOLT, 21 AMPERE. S/N 32C1556-UP
2Y8310-PAGE 55.02
c454139 ZEBP1394
2Y8945 ALTERNATOR GP-CHARGING Parts scheme
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Parts for your 120B MOTOR GRADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 2Y-8310 Y [1] ALTERNATOR GP-CHARGING  
2. 2Y-3449 [1] SUPPORT AS  
3. 1A-5964 [1] BOLT  
4. 2Y-8938 [1] PULLEY  
5. 1D-4719 [1] NUT  
6. 2Y-3459 [1] BUSHING  
7. 9S-1366 [1] BOLT  
8. 0S-1591 [1] BOLT  
9. 2Y-4847 [1] STRAP  
10. 2Y-1948 [1] SPACER  
  0S-1587 [1] BOLT  
  5P-1076 [1] WASHER-HARD  
11. 1D-4716 [1] NUT-FULL  
12. 1A-9579 [1] BOLT  
  9M-1974 [2] WASHER  
13. 5M-2894 [1] WASHER  
14. 0S-1571 B [1] BOLT 44.45MM(1.75IN)LG  
  5M-2894 B [1] WASHER  
15. 0S-1591 B [1] BOLT 38.1MM(1.5IN)LG  
  B   USE AS REQUIRED
  Y   SEPARATE ILLUSTRATION
 

#ZEBP13940123
 

2Y-8310: ALTERNATOR GP-CHARGING

2Y8310 ALTERNATOR GP
28 VOLT, 21 AMPERE. S/N 32C1556-UP
PART OF 2Y8945 ALTERNATOR
c623567 ZEBP1394
2Y8310 ALTERNATOR GP-CHARGING Parts scheme
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Parts for your 120B MOTOR GRADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 2Y-9548 [1] FAN  
2. 2Y-9544 [1] ROTOR AS  
3. 2Y-3325 [4] SCREW  
4. 2Y-3326 [4] WASHER  
5. 2Y-9547 [1] COVER  
6. 2Y-9546 [1] COVER  
7. 2Y-9542 [1] GASKET  
8. 2Y-9541 [1] REGULATOR AS  
9. 2Y-3321 [2] BEARING  
10. 2Y-9586 M [3] SCREW  
11. 2Y-9584 [5] LOCKWASHER  
12. 2Y-9543 [1] INSULATOR  
13. 2Y-9545 [1] RECTIFIER AS  
14. 2Y-9549 [1] STATOR  
15. 2F-5721 [1] BALL BEARING  
16. 2Y-9587 [1] LOCKWASHER  
17. 2Y-9588 M [1] SCREW  
18. 2Y-9585 M [2] SCREW  
19. 5Y-2425 [1] WASHER  
20. 5Y-2426 [1] LOCKWASHER  
21. 5Y-2427 M [1] NUT  
    THE FOLLOWING REPAIR
    KITS ARE AVAILABLE:
   
  5Y-2429 [1] KIT-TERMINAL (B POS)  
  2Y-9574 [1] KIT (TERMINAL-D POS)  
  2Y-9575 [1] KIT-TERMINAL  
    (TERMINAL KITS INCLUDE
    INSULATORS & HARDWARE)
  2Y-9581 [1] KIT (BRUSH AND SPRING)  
    (INCL BRUSHES & SPRINGS)
  2Y-9550 [1] KIT (ROTOR)  
    (INCL COVER & HARDWARE)
  M   METRIC PART
 

#ZEBP13940124
 

7N-0718: SWITCH AS-DISCONNECT

7N0718 SWITCH AS-DISCONNECT
REPLACED BY 2Y8441-PAGE 56.01
PART OF 2Y1955 BATTERY & WIRING
c231914 ZEBP1394
7N0718 SWITCH AS-DISCONNECT Parts scheme
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Parts for your 120B MOTOR GRADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 8H-5306 [1] KEY  
2. 8H-5303 [1] NUT-HEX  
3. 2H-3922 [1] LOCKWASHER  
4. 7F-7259 [4] LOCKWASHER  
5. 6F-7045 C [2] NUT-FULL  
6. 6L-1962 C [2] NUT-JAM  
  C   CHANGE FROM PREVIOUS TYPE
 

#ZEBP13940125
 

2Y-2935: ALTERNATOR GP-CHARGING

2Y2935 ALTERNATOR GP
28 VOLT, 17 AMPERE. S/N 32C100-1555
2Y4212-PAGE 55
sp1375 ZEBP1394
2Y2935 ALTERNATOR GP-CHARGING Parts scheme
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Parts for your 120B MOTOR GRADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 2Y-4212 CY [1] ALTERNATOR GROUP  
    (Separate Illustration)
2. 2Y-3449 [1] BRACKET  
3. 1A-5964 [1] BOLT  
4. 3B-4506 [3] LOCKWASHER  
5. 1D-4719 [1] NUT  
6. 3B-4508 [2] LOCKWASHER  
7. 1A-5822 [1] BOLT  
8. 0S-1571 [2] BOLT  
9. 2Y-4847 C [1] STRAP  
10. 2Y-1948 [1] SPACER  
  0S-1585 [1] BOLT  
11. 1D-4716 [1] NUT  
  3B-4505 [1] LOCKWASHER  
12. 1A-9579 [1] BOLT  
  4B-5270 [1] LOCKWASHER  
13. 2Y-4206 [1] PULLEY  
14. 2Y-3459 [1] BUSHING  
  C   INDICATES CHANGE
  Y   SEPARATE ILLUSTRATION
 

#ZEBP13940126
 

2Y-8441: SWITCH AS-DISCONNECT

2Y8441 SWITCH AS-DISCONNECT
PART OF 2Y1955 BATTERY & WIRING
c355695 ZEBP1394
2Y8441 SWITCH AS-DISCONNECT Parts scheme
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Parts for your 120B MOTOR GRADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 8H-5306 [1] KEY  
2. 8H-5303 [1] NUT-HEX  
3. 2H-3922 [1] LOCKWASHER  
4. 9F-5644 [2] LOCKWASHER  
5. 6F-7045 [2] NUT-FULL  
 

#ZEBP13940127
 

2Y-1955: BATTERY & WIRING GP

2Y1955 BATTERY & WIRING GP-PART 1 OF 5
24 VOLT. TYPE 1. S/N 32C100-1168
2Y2930, 7M7147-PAGE 62, 2Y2074-PAGE 65
c237548 ZEBP1394
2Y1955 BATTERY & WIRING GP Parts scheme
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Parts for your 120B MOTOR GRADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 7M-7147 Y [2] LAMP AS-STOP & TAIL  
2. 3D-5364 [2] BRACKET  
3. 4D-3666 C [1] HARNESS AS  
  5P-5629 D WIRE (14GA)  
4. 0S-1594 [4] BOLT  
5. 3B-4506 [9] LOCKWASHER  
6. 2Y-2950 [1] HARNESS AS  
  2L-8076 [3] TERMINAL  
  2Y-3815 [1] CONNECTOR  
  2Y-2949 [3] TERMINAL  
7. 2Y-1829 [1] TUBE  
8. 3D-6655 [2] GROMMET  
9. 2Y-1667 [1] CABLE AS  
10. 4D-3631 [2] CLIP  
11. 1H-5167 [1] CLIP-WIRE  
12. 0S-0509 [4] BOLT  
13. 1D-4717 [1] NUT  
14. 3H-0019 [5] CLIP  
15. 5B-0131 [3] GROMMET  
16. 3B-4508 [2] LOCKWASHER  
17. 0T-0386 [2] CLIP  
18. 2Y-3374 [3] NIPPLE  
19. 0S-1621 [1] BOLT  
20. 0S-1620 [1] BOLT  
21. 1D-5117 [1] NUT-JAM  
22. 2D-2751 [3] GROMMET  
23. 4B-3626 [1] SETSCREW  
24. 0T-0102 [1] BOLT  
25. 2Y-5001 [1] TUBE  
26. 1B-3057 [1] CLIP  
27. 4D-3670 [1] GROMMET  
28. 2Y-2930 Y [1] REGULATOR AS  
29. 3B-4504 [4] LOCKWASHER  
30. 7B-2742 [4] BOLT  
31. 1B-4330 [4] NUT  
32. 4B-4276 [4] WASHER  
33. 2Y-2074 Y [1] HARNESS AS  
  C   CHANGE FROM PREVIOUS TYPE
  D   ORDER BY THE METER
  Y   SEPARATE ILLUSTRATION
 

#ZEBP13940128
 

2Y-1955: BATTERY & WIRING GP

2Y1955 BATTERY & WIRING GP-PART 2 OF 5
24 VOLT. TYPE 1. S/N 32C100-1168
c237115 ZEBP1394
2Y1955 BATTERY & WIRING GP Parts scheme
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Parts for your 120B MOTOR GRADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
  2Y-1666 [1] CABLE ASSEM.  
  1G-2098 [1] TERMINAL  
  5S-7252 [1] TERMINAL  
  1G-2038 [1] BOLT  
  1M-6120 [1] NUT  
  5P-0746 [1] CABLE  
  5D-3522 [1] HOLD DOWN ASSEM.  
  5K-8074 [1] CABLE ASSEM.  
  1G-2038 [2] BOLT  
  1M-6120 [2] NUT  
    (Parts of 5K8074 Assem.)
  1G-2108 [1] TERMINAL ASSEM.  
    (Part of 1G2167 Assem.)
  2D-7428 [1] CLAMP ASSEM.  
  2Y-2204 [4] EYE BOLT  
  4B-4280 [4] WASHER  
  3H-6660 [4] PIN  
  0S-1594 [4] BOLT  
  3B-4506 [4] LOCKWASHER  
  4B-4278 [4] WASHER  
  1G-2101 [1] CABLE ASSEM.  
  1G-2099 [1] TERMINAL  
  1S-7252 [1] TERMINAL  
  1G-2038 [1] BOLT  
  1M-6120 [1] NUT  
  5K-8074 [1] CABLE ASSEM.  
  1G-2038 [2] BOLT  
  1M-6120 [2] NUT  
    (Parts of 5K8074 Assem.)
  1G-2038 [2] BOLT  
  1M-6120 [2] NUT  
    (Parts of 1G2167 Assem.)
  1G-2107 [1] TERMINAL ASSEM.  
    (Part of 1G2167 Assem.)
  1G-2167 [1] CABLE ASSEM.  
  2B-9498 [4] NUT  
  4B-4278 [4] WASHER  
  7F-7259 [4] LOCKWASHER  
  5S-7219 [4] BATTERY  
  5S-8405 [12] PLUG  
  8D-0519 [1] BASE ASSEM.  
  7B-3235 [2] BOLT  
  3B-4508 [2] LOCKWASHER  
 

#ZEBP13940129
 

2Y-1955: BATTERY & WIRING GP

2Y1955 BATTERY & WIRING GP-PART 3 OF 5
24 VOLT. TYPE 1. S/N 32C100-1168
7N0718-PAGE 56
c237549 ZEBP1394
2Y1955 BATTERY & WIRING GP Parts scheme
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Parts for your 120B MOTOR GRADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 4D-4848 [1] CABLE ASSEM.  
  4D-1248 [1] TERMINAL  
  030-1707 [1] TERMINAL  
2. 4D-4849 [1] CABLE ASSEM.  
  [1] TERMINAL  
  030-1707 [1] TERMINAL  
3. 7N-0718 Y [1] SWITCH ASSEM.  
    (Separate Illustration)
4. 5B-0131 [1] GROMMET  
  9F-2940 [1] GROMMET  
  0L-1351 [1] BOLT  
  3B-4506 [1] LOCKWASHER  
  3H-0019 [2] CLIP  
5. 6H-4005 [1] GROMMET  
6. 5B-2927 [1] SCREW  
  3B-4506 [1] LOCKWASHER  
  1D-4717 [1] NUT  
7. 3H-0019 [1] CLIP  
  9F-2940 [1] GROMMET  
8. 2Y-3446 [1] HARNESS  
  2L-8075 [2] TERMINAL  
  2D-8757 [1] TERMINAL  
  2L-8076 [1] TERMINAL  
  5P-4571 [1] TERMINAL  
9. 1G-2023 [1] SPACER  
10. 2Y-3447 [1] WIRE ASSEM.  
  [1] TERMINAL  
  5P-5632 [1] WIRE  
  4K-5120 [1] TERMINAL  
11. 1B-9575 [1] BOLT  
  3B-4505 [1] LOCKWASHER  
  1D-4716 [1] NUT  
12. 2Y-3808 [1] HORN ASSEM.  
13. 4D-0012 [1] GROMMET  
14. 3D-4529 [3] FUSE  
15. 4D-1210 [1] CONNECTOR  
16. 2Y-2180 [1] STRIP  
17. 1H-4336 [3] SCREW  
  7H-2079 [3] LOCKWASHER  
18. 2Y-1768 [1] BOX ASSEM.  
19. 2Y-1797 [1] CONDUIT  
  6B-2370 [2] BUSHING  
  1F-6113 [2] LOCKNUT  
20. 4D-3684 [1] HARNESS ASSEM.  
  2Y-5727 C [1] PLUG  
  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
Starting Motors
3306 VEHICULAR ENGINE FOR 120B MOTOR GRADER
Starter Solenoids
3306 VEHICULAR ENGINE FOR 120B MOTOR GRADER
Disassembly and Assembly
Starting Motor
3306 VEHICULAR ENGINE FOR 120B MOTOR GRADER
Service Magazine
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
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
Examine Failed Starting Motors to Understand the Reason for Failure {1453}
2002/10/28

Caterpillar Parts SIS Catalog 120B :

STARTING MOTOR GP-ELECTRIC
2Y-1921 STARTING MOTOR GP-ELECTRIC
FILTER GP-FUEL
2Y-5711 FILTER GP-FUEL
FILTER GP-FUEL
2Y-5711 FILTER GP-FUEL
FILTER GP-FUEL
2Y-5711 FILTER GP-FUEL
2Y-8670 FILTER AS-FUEL
FILTER GP-FUEL
2Y-5711 FILTER GP-FUEL
FILTER AS-FUEL
1P-2299 FILTER AS-FUEL
COVER AS
2Y-9252 COVER AS
ALTERNATOR GP-CHARGING
2Y-4212 ALTERNATOR GP-CHARGING
ALTERNATOR GP-CHARGING
2Y-8945 ALTERNATOR GP-CHARGING
ALTERNATOR GP-CHARGING
2Y-8310 ALTERNATOR GP-CHARGING
SWITCH AS-DISCONNECT
7N-0718 SWITCH AS-DISCONNECT
ALTERNATOR GP-CHARGING
2Y-2935 ALTERNATOR GP-CHARGING
SWITCH AS-DISCONNECT
2Y-8441 SWITCH AS-DISCONNECT
BATTERY & WIRING GP
2Y-1955 BATTERY & WIRING GP
2Y-1955 BATTERY & WIRING GP

Truck sale:

CATERPILLAR 120B 1978
$17,572 USD 
CATERPILLAR 120B 1978
- MOTOR GRADERS
PESA
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