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8D4835 BACK-UP WARNING GROUP-Factory Installation Part of 8D4905 Back-Up Warning Arrangement 621 WHEEL TRACTOR


ELECTRICAL AND STARTING SYSTEM
ALARM GP
HYDRAULIC SYSTEM
LINES GP-PUMP
LINES GP-HYDRAULIC
PUMP GP
FRAME AND BODY
HITCH GP

WHEEL TRACTOR 621 WHEEL TRACTOR 23H
 621 TRACTOR 23H04299-UP (MACHINE) UEG0630S 621 23H   (1966)

ELECTRICAL AND STARTING SYSTEM

ALARM GP
LIGHT SIGNAL RECEIVER GROUP
7D-1180 LIGHT SIGNAL RECEIVER GROUP
8D-4905 BACK UP WARNING ARRANGEMENT
BACK-UP WARNING GROUP
8D-4835 BACK-UP WARNING GROUP
BACK-UP WARNING GROUP
8D-4805 BACK-UP WARNING GROUP
BASIC ALARM GROUP
7D-9375 BASIC ALARM GROUP
BACK-UP WARNING GROUP
8D-4805 BACK-UP WARNING GROUP
BASIC ALARM GROUP
7D-9375 BASIC ALARM GROUP
 

#UEG0630S0460
 

8D-4835: BACK-UP WARNING GROUP

8D4835 BACK-UP WARNING GROUP-Factory Installation
Part of 8D4905 Back-Up Warning Arrangement
c116181 UEG0630S
8D4835 BACK-UP WARNING GROUP Parts scheme
  For full view, you need register

Parts for your 621 WHEEL TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 8D-3933 [1] PLATE ASSEM.  
2. 4M-7470 [2] GROMMET  
3. 7D-9375 Y [1] ALARM GROUP  
    (Separate Illustration)
4. 1H-5165 [2] CLIP  
5. 5J-0299 [3] CLIP  
6. 1H-5166 [1] CLIP  
7. 8D-3409 [1] WIRE ASSEM.  
8. 7F-9224 [2] TERMINAL  
  2D-3981 [2] INSULATOR  
  Y   SEPARATE ILLUSTRATION
 

#UEG0630S0461
 

8D-4805: BACK-UP WARNING GROUP

8D4805 BACK-UP WARNING GROUP--Factory Installation--Type 1
Part of 8D4905 Back-Up Warning Arrangement shown on Page 202
c116183 UEG0630S
8D4805 BACK-UP WARNING GROUP Parts scheme
  For full view, you need register

Parts for your 621 WHEEL TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 6H-9666 [2] SCREW  
  4B-2048 [2] NUT  
  8F-1434 [2] LOCKWASHER  
2. 1H-5166 [1] CLIP  
3. 8D-3407 [1] WIRE ASSEM.  
  7F-9224 [2] TERMINAL  
4. 8D-3421 [1] HARNESS ASSEM.  
  7F-9224 [2] TERMINAL  
5. 8D-4645 [1] CONNECTOR  
6. 4B-1238 [2] SCREW (.625" Long)  
  3B-4502 [2] LOCKWASHER  
7. 8D-4658 [1] SWITCH  
8. 032-8924 [2] SCREW (2" Long)  
  3B-4502 [2] LOCKWASHER  
9. 8D-4656 [1] LEVER  
10. 8D-3411 [1] PLATE  
11. 0S-0509 [3] BOLT  
  3B-4506 [3] LOCKWASHER  
  4B-4278 [3] WASHER  
12. 3B-1915 [1] BOLT  
13. 8D-4613 [1] LEVER  
  1B-8706 [1] KEY  
 

#UEG0630S0462
 

7D-9375: BASIC ALARM GROUP

7D9375 BASIC ALARM GROUP--24 Volt--Type 1
Part of 8D4835 Back-Up Warning Group shown on Page 202
c140647 UEG0630S
7D9375 BASIC ALARM GROUP Parts scheme
  For full view, you need register

Parts for your 621 WHEEL TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 9F-9327 [4] SCREW  
  3B-4502 C [4] LOCKWASHER  
2. 8D-3469 [1] HOUSING ASSEM.  
3. 2A-0762 C [6] BOLT  
4. 1B-4330 [2] NUT  
5. 3B-4504 [6] LOCKWASHER  
6. 4B-5269 [4] WASHER  
7. 8L-8420 C [1] STRAP  
8. 4B-2048 [2] NUT  
  3B-4502 C [2] LOCKWASHER  
  4B-4274 C [2] WASHER  
9. 8D-8113 [1] FUSE (3 AMP)  
10. 7D-9743 [2] WIRE ASSEM.  
11. 7D-9747 [1] HORN  
12. 8D-3479 [1] COVER  
13. 9B-7242 [2] SCREW  
  3B-4501 C [1] LOCKWASHER  
14. 7D-9746 [1] ACTUATOR ASSEM.  
15. 1D-4717 [3] NUT  
16. 3B-4506 [3] LOCKWASHER  
  C   INDICATES CHANGE
 

#UEG0630S0463
 

8D-4805: BACK-UP WARNING GROUP

8D4805 BACK-UP WARNING GROUP--Type 2--Factory Installation
Part of 8D4905 Back-Up Warning Arrangement listed on Page 202
c144144 UEG0630S
8D4805 BACK-UP WARNING GROUP Parts scheme
  For full view, you need register

Parts for your 621 WHEEL TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 6H-9666 [2] SCREW  
  4B-2048 [2] NUT  
  8F-1434 [2] LOCKWASHER  
2. 1H-5166 [1] CLIP  
3. 8D-3407 [1] WIRE ASSEM.  
  7F-9224 [2] TERMINAL  
4. 8D-3421 [1] HARNESS ASSEM.  
  7F-9224 [2] TERMINAL  
5. 8D-4645 [1] CONNECTOR  
6. 7F-7615 C [2] SCREW (.750 in. long-flat head)  
  3F-1147 [2] LOCKWASHER  
7. 8D-4658 [1] SWITCH  
8. 032-8924 [2] SCREW (2 in. long)  
  3B-4502 [2] LOCKWASHER  
9. 8D-4656 [1] LEVER  
10. 8D-3411 [1] PLATE  
11. 0S-0509 C [3] BOLT (.75 in. long)  
    (Use as required)
  3B-4506 [3] LOCKWASHER  
12. 3B-1915 [1] BOLT  
13. 8D-4613 [1] LEVER  
  1B-8706 [1] KEY  
14. 2B-2695 C [3] BOLT (.875 in. long)  
    (Use as required)
  3B-4505 [3] LOCKWASHER  
15. 3S-8313 C [1] PLUG  
16. 1H-5165 C [2] CLIP  
17. 8M-2772 C [1] CLIP  
  C   INDICATES CHANGE
 

#UEG0630S0464
 

7D-9375: BASIC ALARM GROUP

7D9375 BASIC ALARM GROUP--24 Volt--Type 2
Part of 8D4835 Back-Up Warning Group shown on Page 202
c144625 UEG0630S
7D9375 BASIC ALARM GROUP Parts scheme
  For full view, you need register

Parts for your 621 WHEEL TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 9F-9327 [4] SCREW  
  3B-4502 [4] LOCKWASHER  
2. 8D-3469 [1] HOUSING ASSEM.  
3. 2A-0762 [6] BOLT  
4. 1B-4330 [2] NUT  
5. 3B-4504 [6] LOCKWASHER  
6. 4B-5269 [4] WASHER  
7. 8L-8420 [1] STRAP  
8. 4B-2048 [2] NUT  
  3B-4502 [2] LOCKWASHER  
  4B-4274 [2] WASHER  
9. 8D-8113 [1] FUSE (3 AMP)  
10. 7D-2718 C [2] WIRE ASSEM.  
  7F-9224 [2] TERMINAL  
11. 9D-4484 C [1] HORN (24 volt)  
12. 8D-3479 [1] COVER  
13. 9B-7242 [2] SCREW  
  3B-4501 [2] LOCKWASHER  
14. 7D-9746 [1] ACTUATOR ASSEM.  
15. 1D-4717 [3] NUT  
16. 3B-4506 [3] LOCKWASHER  
  C   INDICATES CHANGE
 

#UEG0630S0465
 

6D-9630: HYDRAULIC PUMP AND LINES GROUP

6D9630 HYDRAULIC PUMP AND LINES GROUP--Field Installation
c124187 UEG0630S
6D9630 HYDRAULIC PUMP AND LINES GROUP Parts scheme
  For full view, you need register

Parts for your 621 WHEEL TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 6D-9462 [1] TUBE ASSEM.  
2. 2J-9608 [2] FLANGE  
  4J-0527 [1] SEAL  
3. 0S-1587 [4] BOLT  
4. 3B-4508 [14] LOCKWASHER  
5. 6J-3650 [1] SEAL  
6. 5D-6176 [1] COVER  
7. 0S-1595 [4] BOLT  
8. 6D-9457 [1] HOSE ASSEM. (57" long overall)  
9. 2K-0190 [4] FLANGE  
  5F-1678 [2] SEAL  
10. 0S-1588 [12] BOLT  
  3B-4506 [12] LOCKWASHER  
11. 0S-1585 [4] BOLT  
12. 5H-8847 [2] FLANGE  
  6J-2680 [1] SEAL  
13. 6D-9546 [1] HOSE ASSEM. (38.88" long overall)  
14. 7J-0616 Y [1] PUMP ASSEM.  
    (See Separate Illustration)
15. 1H-3305 [2] FLANGE  
  5J-1356 [2] SEAL  
16. 6D-9469 [1] HOSE ASSEM. (29" long overall)  
17. 0V-0375 [2] BOLT  
18. 6D-9640 [1] ADAPTER ASSEM.  
19. 4J-0523 [1] SEAL  
  Y   SEPARATE ILLUSTRATION
 

#UEG0630S0466
 

8J-8798: HYDRAULIC OIL LINES GROUP

8J8798 HYDRAULIC OIL LINES GROUP--Field Installation
FOR USE WITH J621 ELEVATING SCRAPER SERIAL NO. 43H1 THROUGH
43H1014 EQUIPPED WITH 6D9630 PUMP AND LINES GROUP AND 43H1015-Up
TO PREVENT ISOLATION TO THE SCRAPER RELIEF VALVE DURING BOWL
AND EJECTOR CONTROL OPERATION
c146667 UEG0630S
8J8798 HYDRAULIC OIL LINES GROUP Parts scheme
  For full view, you need register

Parts for your 621 WHEEL TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 0L-1143 [8] BOLT  
2. 7J-7987 [1] ADAPTER  
  4J-0520 [1] SEAL  
3. 030-7948 [2] FITTING  
4. 9S-1689 [1] HOSE ASSEM.  
    (Includes)
  9S-0671 H HOSE 20.7 in.  
5. 3S-8606 [2] SLEEVE  
6. 8S-4055 [2] COUPLING ASSEM.  
7. 8J-8796 [1] VALVE GROUP  
    (Includes)
  3K-0360 [1] SEAL  
8. 8S-5619 [1] HOSE ASSEM.  
    (Includes)
  9S-0671 H HOSE 15.1 in.  
9. 8S-4055 [2] COUPLING ASSEM.  
10. 3S-8606 [2] SLEEVE  
11. 8J-8797 [1] ADAPTER  
  4J-5267 [1] SEAL  
  H   ORDER BY THE INCH
 

#UEG0630S0467
 

9J-5134: VANE PUMP GROUP

9J5134 VANE PUMP GROUP
Provides Field Replacement for 7J616
c156352 UEG0630S
9J5134 VANE PUMP GROUP Parts scheme
  For full view, you need register

Parts for your 621 WHEEL TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
  2H-3931 H [1] SEAL  
  1S-0668 H [1] RING  
  1H-7339 H [1] SEAL  
  4F-7952 H [1] SEAL  
  4J-9222 H [1] RING  
  4J-1657 [1] COVER  
    THE FOLLOWING REPAIR KIT IS AVAILABLE:
  9J-5112 [1] KIT (Seal)  
    (Consists of Parts Marked H)
  L [10] VANE  
  L [10] INSERT  
  1D-4574 [4] BOLT  
  L [1] ROTOR  
  4J-2457 [1] COVER  
  L [1] PLATE  
  0T-0319 [4] BOLT  
  L [1] RING  
  L [2] PIN  
  L [2] SCREW  
  L [1] PLATE ASSEM.  
  J [2] SCREW  
  J [10] VANE  
  J [10] INSERT  
  J [2] PIN  
  2H-4145 H [1] SEAL  
  9J-5124 [1] BODY  
  4H-0407 H [1] PLUG  
  7J-7967 R [1] CARTRIDGE ASSEM.  
    (14 Gallon Per Minute)
    (Consists of Parts Marked L)
  7J-0561 R [1] CARTRIDGE ASSEM.  
    (21 Gallon Per Minute)
    (Consists of Parts Marked J)
  9J-5104 H [1] SHAFT  
  9J-5150 H [1] SEAL  
  4J-0980 H [1] SEAL  
  4M-7648 [1] WASHER  
  1L-8497 [1] RING  
  6B-1124 [1] BEARING  
  4M-7652 [1] RING  
  1S-0670 H [1] RING  
  1H-9696 H [1] SEAL  
  J [1] PLATE  
  1S-0669 H [1] RING  
  2H-3934 H [1] SEAL  
  J [1] ROTOR  
  J [1] RING  
  J [1] PLATE ASSEM.  
  R   REMFG PART MAY BE AVAILABLE
 

#UEG0630S0468
 

7J-0616: HYDRAULIC PUMP ASSEMBLY

7J616 HYDRAULIC PUMP ASSEMBLY
Part of 6D9630 Hydraulic Pump and Lines Group
c124189 UEG0630S
7J0616 HYDRAULIC PUMP ASSEMBLY Parts scheme
  For full view, you need register

Parts for your 621 WHEEL TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
  2H-3931 H [1] SEAL  
  1S-0668 H [1] RING  
  1H-7339 H [1] SEAL  
  4F-7952 H [1] SEAL  
  4J-9222 H [1] RING  
  4J-3548 [1] WASHER  
  4J-1657 [1] COVER  
    THE FOLLOWING REPAIR KIT IS AVAILABLE:
  4J-9280 [1] KIT (Seal)  
    (Consists of Parts Marked H)
  O [10] VANE  
  O [10] INSERT  
  1D-4574 [4] BOLT  
  O [1] ROTOR  
  4J-2457 [1] COVER  
  O [1] PLATE  
  0T-0319 [4] BOLT  
  O [1] RING  
  O [2] PIN  
  O [2] SCREW  
  J [1] BEARING  
  O [1] PLATE  
  J [2] SCREW  
  J [10] VANE  
  J [10] INSERT  
  J [2] PIN  
  2H-4145 H [1] SEAL  
  4J-8748 [1] BODY  
  7J-0581 [1] CARTRIDGE ASSEM.  
    (14 Gallon Per Minute)
    (Consists of Parts Marked O)
  7J-0561 R [1] CARTRIDGE ASSEM.  
    (21 Gallon Per Minute)
    (Consists of Parts Marked J)
  7J-0615 [1] SHAFT  
  4J-0981 H [1] WIPER  
  4J-0980 H [1] SEAL  
  4M-7648 [1] WASHER  
  1L-8497 [1] RING  
  6B-1124 [1] BEARING  
  4M-7652 [1] RING  
  1S-0670 H [1] RING  
  1H-9696 H [1] SEAL  
  J [1] PLATE  
  1S-0669 H [1] RING  
  2H-3934 H [1] SEAL  
  J [1] ROTOR  
  J [1] RING  
  J [1] PLATE ASSEM.  
  R   REMFG PART MAY BE AVAILABLE
 

#UEG0630S0469
 

8D-2470: HITCH, STEERING AND HYDRAULIC ARRANGEMENT

8D2470 HITCH, STEERING AND HYDRAULIC ARRANGEMENT--
Non-Cushion Hitch--Type 1
Factory Installation
UEG0630S0469 UEG0630S
  For full view, you need register

Parts for your 621 WHEEL TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
  5D-6370 Y [1] STEERING GEAR GROUP  
  6D-8070 Y [1] DIFFERENTIAL CASE AND COVERS GROUP  
  6D-8450 Y [1] STEERING LINES GROUP  
  6D-8463 Y [1] PUMP, LINES AND TANK GROUP  
  6D-9470 Y [1] TRACTOR TO SCRAPER LINES GROUP  
  5J-1326 Y [1] STEERING CYLINDER GROUP  
  5J-3170 Y [1] HITCH AND STEERING GROUP  
  7J-0472 Y [1] STEERING LINES GROUP  
  Y   SEPARATE ILLUSTRATION
 

Information:

Special Instruction
Installation of 244-1090 Alarm Gp {7400, 7402, 7407}
Installation of 244-1090 Alarm Gp {7400, 7402, 7407}
Installation of 262-6141 Alarm Gp {7406}
Installation of 262-6141 Alarm Gp {7406}

Caterpillar Parts SIS Catalog 621 :

8D-4905 BACK UP WARNING ARRANGEMENT
ROTOCHAMBER AS
7J-4430 ROTOCHAMBER AS
VALVE AS-CHECK
2R-0618 VALVE AS-CHECK
VALVE AS
6D-3782 VALVE AS
ROTOCHAMBER ASSEMBLY
6D-5217 ROTOCHAMBER ASSEMBLY
PARKING BRAKE CONTROL GROUP
7J-5103 PARKING BRAKE CONTROL GROUP
PARKING BRAKE CONTROL GROUP
7J-5103 PARKING BRAKE CONTROL GROUP
PARKING BRAKE CONTROL GROUP
8D-8660 PARKING BRAKE CONTROL GROUP
BACK-UP WARNING GROUP
8D-4805 BACK-UP WARNING GROUP
BASIC ALARM GROUP
7D-9375 BASIC ALARM GROUP
BACK-UP WARNING GROUP
8D-4805 BACK-UP WARNING GROUP
BASIC ALARM GROUP
7D-9375 BASIC ALARM GROUP
HYDRAULIC PUMP AND LINES GROUP
6D-9630 HYDRAULIC PUMP AND LINES GROUP
HYDRAULIC OIL LINES GROUP
8J-8798 HYDRAULIC OIL LINES GROUP
VANE PUMP GROUP
9J-5134 VANE PUMP GROUP
HYDRAULIC PUMP ASSEMBLY
7J-0616 HYDRAULIC PUMP ASSEMBLY

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CAROLINA CAT
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