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7N4014 AIR COMPRESSOR GROUP Part of 7N6294 Air Compressor Group shown on Page 48 621 WHEEL TRACTOR


BASIC ENGINE
AIR COMPRESSOR GP
AIR INLET AND EXHAUST SYSTEM
TURBOCHARGER GP
AFTERCOOLER GP
COOLING SYSTEM
LINES GP-AFTERCOOLER WATER
SERVICE EQUIPMENT AND SUPPLIES
FILTERS
AIR INLET AND EXHAUST SYSTEM
MANIFOLD GP-EXHAUST

WHEEL TRACTOR 621 WHEEL TRACTOR 2DB
 621B SCRAPER 2DB00001-UP (MACHINE) SEBP2429 621 2DB   (1983)

BASIC ENGINE

AIR COMPRESSOR GP
LINES GP-AIR COMPRESSOR
8N-6024 LINES GP-AIR COMPRESSOR
AIR COMPRESSOR GP
7N-4014 AIR COMPRESSOR GP
AIR COMPRESSOR GP
7N-6294 AIR COMPRESSOR GP
 

#SEBP24290060
 

7N-4014: AIR COMPRESSOR GP

7N4014 AIR COMPRESSOR GROUP
Part of 7N6294 Air Compressor Group shown on Page 48
c171633 SEBP2429
7N4014 AIR COMPRESSOR GP Parts scheme
  For full view, you need register

Parts for your 621 WHEEL TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 7N-7448 [1] GASKET  
2. 7N-7447 [1] HEAD ASSEM.  
3. 0S-1619 [5] BOLT  
4. 7N-7449 [1] ADAPTER  
  1S-7107 [1] GASKET  
5. 0L-1352 [1] BOLT  
  5M-2894 [1] WASHER  
6. 2B-2695 [4] BOLT  
7. 3B-4505 [10] LOCKWASHER  
8. 7N-7450 [1] COVER  
  7N-7451 [1] GASKET  
9. 0S-1615 [2] BOLT  
  3B-4504 [2] LOCKWASHER  
10. 2B-0858 [1] PLUG  
11. 7N-9707 [1] COVER  
  7N-7442 [1] GASKET  
12. 9M-0397 [1] ADAPTER  
13. 034-4160 [4] BOLT  
14. 7N-7444 [2] ROD ASSEM.  
15. 0S-1617 [6] BOLT  
16. 7N-9706 [1] PLATE  
  7N-7440 [1] GASKET  
17. 8H-9789 [2] BEARING  
18. 7N-9708 [1] CRANKSHAFT  
19. 7N-9709 [1] CRANKCASE  
20. 1A-2029 [6] BOLT  
  3B-4506 [6] LOCKWASHER  
21. 4B-4845 [2] PLUG  
22. 7N-7445 [1] BLOCK  
  7N-7446 [1] GASKET  
23. 7N-7443 [2] PISTON ASSEM.  
    THE FOLLOWING REPAIR KITS ARE AVAILABLE:
  7N-7435 [1] KIT (major repair)  
    (Includes Stops, Springs, Seats, Guides, Gaskets ect.)
  7N-7436 [1] KIT (piston rings)  
 

#SEBP24290061
 

7N-6294: AIR COMPRESSOR GP

7N6294 AIR COMPRESSOR GROUP
7N4014 Compressor parts are shown on Page 47
c171632 SEBP2429
7N6294 AIR COMPRESSOR GP Parts scheme
  For full view, you need register

Parts for your 621 WHEEL TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 9N-1843 [1] GASKET  
2. 9F-2247 [4] PLUG  
3. 4N-9680 [1] GOVERNOR ASSEM.  
    (Includes)
4. 2S-2923 [1] COVER  
5. 6L-1883 [1] GASKET  
6. 9M-0378 [2] BOLT  
  9M-1974 [2] WASHER  
7. 5F-5434 [1] VENT ASSEM.  
8. 7N-4014 Y [1] COMPRESSOR GROUP  
    (Separate Illustration)
9. 1D-4719 [3] NUT  
  5P-8245 [3] WASHER  
10. 5H-2767 [1] SEAL  
    THE FOLLOWING REPAIR KIT IS AVAILABLE:
  9M-0402 [1] KIT  
    (Includes cover, gromets, spring, filter & valve)
  Y   SEPARATE ILLUSTRATION
 

#SEBP24290062
 

8N-5444: TURBOCHARGER GP

8N5444 TURBOCHARGER GROUP
7N9478 Turbocharger Group shown on Page 49
c227329 SEBP2429
8N5444 TURBOCHARGER GP Parts scheme
  For full view, you need register

Parts for your 621 WHEEL TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 8N-5308 Y [1] TURBOCHARGER GROUP  
    (Separate Illustration)
2. 1S-4295 [1] GASKET  
3. 2N-2765 [4] BOLT  
  2N-2766 [4] LOCKNUT  
  Y   SEPARATE ILLUSTRATION
 

#SEBP24290063
 

7N-9478: TURBOCHARGER GP

7N9478 TURBOCHARGER GROUP--Field Installation
Part of 8N5444 Turbocharger Group shown on Page 48
8N817 Cartridge parts are shown on Page 50
c220913 SEBP2429
7N9478 TURBOCHARGER GP Parts scheme
  For full view, you need register

Parts for your 621 WHEEL TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 8N-0821 [1] COMPRESSOR ASSEM.  
2. 3S-5129 [1] CLAMP ASSEM.  
3. 8N-0817 RY [1] CARTRIDGE GROUP  
    (Separate Illustration)
4. 9N-2038 [1] CLAMP ASSEM.  
5. 8N-0820 R [1] TURBINE (housing)  
6. 9N-2044 [1] NAMEPLATE  
  2F-0808 [2] SCREW  
  R   REMFG PART MAY BE AVAILABLE
  Y   SEPARATE ILLUSTRATION
 

#SEBP24290064
 

8N-0817: CARTRIDGE GP-TURBOCHARGER

8N817 TURBOCHARGER CARTRIDGE GROUP
Part of 7N9478 Turbocharger Group shown on Page 49
c182212 SEBP2429
8N0817 CARTRIDGE GP-TURBOCHARGER Parts scheme
  For full view, you need register

Parts for your 621 WHEEL TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 8N-0819 R [1] BACKPLATE AS  
2. 1P-1120 [1] RING-SEAL  
3. 6N-5004 [1] BEARING-THRUST  
4. 7N-3759 [1] RING-PISTON  
5. 7N-3760 [1] SHROUD-TURBINE WHEEL  
6. 6N-8632 CR [1] SHAFT & WHEEL AS  
7. 9M-8915 [3] RING-RETAINING  
8. 9N-2035 R [1] HOUSING AS-CENTER  
  4M-6646 [2] PIN-GROOVE  
9. 9M-8911 [1] COLLAR-THRUST  
10. 9N-2046 [1] SPACER-THRUST  
  9M-8919 [2] RING-SEAL  
11. 3S-4484 [1] LOCKNUT-TURBOCHARGER  
12. 8N-0818 [1] WHEEL-COMPRESSOR  
13. 0S-1616 [4] BOLT  
  9N-2036 [4] PLATE-LOCK  
   
   
   
   
   
   
   
   
   
   
14. 9N-2041 [1] KIT-BEARING  
  7N-3193 [1] KIT-BEARING  
    (.005IN OVERSIZE OD AND
    .005IN UNDERSIZE ID)
    -OR-
  7N-3194 [1] KIT-BEARING  
    (.010IN OVERSIZE OD AND
    .010IN UNDERSIZE ID)
    (EA KIT-BEARING INCL
    2 BEARINGS & 2 WASHERS)
   
  9N-2047 F [1] NAMEPLATE-CARTRIDGE  
  2F-0808 FJ [2] SCREW  
  1W-7212 CAF [1] CARTRIDGE GP-TURBOCHARGER  
    (AVAILABLE FOR FIELD
    REPLACEMENT)
    J-MTD ON CARTRIDGE AS
  A   NOT PART OF THIS GROUP
  C   CHANGE FROM PREVIOUS TYPE
  F   NOT SHOWN
  R   REMFG PART MAY BE AVAILABLE
 

#SEBP24290065
 

9N-0013: LINES GP-TURBOCHARGER OIL

9N13 TURBOCHARGER OIL LINES GROUP
c228041 SEBP2429
9N0013 LINES GP-TURBOCHARGER OIL Parts scheme
  For full view, you need register

Parts for your 621 WHEEL TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 1S-6595 [1] GASKET  
2. 0S-1571 [2] BOLT  
3. 0S-1594 [2] BOLT  
4. 1S-4810 [1] GASKET  
5. 9N-0696 [1] TUBE ASSEM.  
6. 9N-3258 C [1] TUBE ASSEM.  
7. 9M-4584 C [1] CONNECTOR  
8. 9H-6067 C [1] SEAL  
9. 9N-0694 [1] ELBOW  
10. 0L-2070 [2] BOLT  
11. 4N-0699 [1] GASKET  
12. 5M-2894 [2] WASHER  
13. 2M-9780 C [1] SEAL  
  C   INDICATES CHANGE
 

#SEBP24290066
 

4N-9010: AFTERCOOLER GP-WATER

4N9010 AFTERCOOLER GROUP
c939421 SEBP2429
4N9010 AFTERCOOLER GP-WATER Parts scheme
  For full view, you need register

Parts for your 621 WHEEL TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 1B-9575 [34] BOLT  
2. 9M-1974 [26] WASHER  
3. 4N-9005 [1] COVER  
4. 5M-6213 [1] PLUG  
5. 9F-8999 [4] BOLT  
  1D-4717 [4] NUT  
6. 5M-2894 [7] WASHER  
7. 1W-0391 [1] COVER  
8. 4W-4553 [2] GASKET  
9. 4N-1324 [1] ADAPTER  
10. 2S-6160 [1] WASHER  
11. 4N-9008 [2] GASKET  
12. 4N-4188 [2] GASKET  
13. 0S-1571 [1] BOLT  
14. 4N-7807 [2] ADAPTER  
15. 4N-4193 [2] ADAPTER  
16. 9M-7002 [2] SEAL  
17. 5P-7204 [2] SEAL  
18. 1W-4879 [1] CORE ASSEM.  
19. 4N-9007 [1] HOUSING  
20. 5M-6214 B [3] PLUG  
21. 2N-8204 [6] GASKET  
22. 3J-5389 [1] PLUG  
23. 0S-1588 B [11] BOLT  
  B   USE AS REQUIRED
 

#SEBP24290067
 

4N-2474: LINES GP-WATER

4N2474 AFTERCOOLER WATER LINES GROUP
c307507 SEBP2429
4N2474 LINES GP-WATER Parts scheme
  For full view, you need register

Parts for your 621 WHEEL TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 1W-7112 C [1] TUBE ASSEM.  
2. 2S-2053 [2] CLIP  
3. 9M-7002 C [4] SEAL  
4. 5M-6213 [1] PLUG  
5. 4N-7806 C [1] ELBOW  
6. 2W-7647 C [1] BRACKET ASSEM.  
7. 9F-2978 [1] NUT  
8. 0S-0509 [1] BOLT  
  5M-2894 C [1] WASHER  
9. 4N-2617 [1] ELBOW  
10. 0S-1590 C [2] BOLT  
11. 4N-0933 [1] GASKET  
12. 4N-7796 C [1] ELBOW  
13. 4N-4196 [1] PIPE  
14. 4N-4192 [1] ELBOW  
15. 0S-1591 C [2] BOLT  
16. 4N-0699 [1] GASKET  
17. 4N-4188 C [2] GASKET  
  C   INDICATES CHANGE
 

#SEBP24290068
 

8N-5407: FILTER GP-COOLANT

8N5407 AFTERCOOLER COOLANT FILTER GROUP
c179515 SEBP2429
8N5407 FILTER GP-COOLANT Parts scheme
  For full view, you need register

Parts for your 621 WHEEL TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 6N-1047 [1] HOSE ASSEM. 94.6 cm(37.24 in.)  
2. 8L-3282 [1] CONNECTOR  
3. 9N-3666 [2] VALVE ASSEM.  
4. 2N-8037 [1] ELBOW  
5. 9N-3370 [1] HOSE ASSEM. 26 cm(10.24 in.)  
6. 9M-1974 [2] WASHER  
7. 7D-5363 [1] CONNECTOR  
8. 2N-3378 [1] ELBOW  
9. 5B-8978 [1] TEE  
10. 9B-3523 [1] BUSHING  
11. 1N-8559 [1] TEE  
12. 001-6498 [1] ELBOW  
13. 4S-1936 [1] CLIP  
14. 0S-1594 [2] BOLT  
  1D-4717 [2] NUT  
15. 9N-3660 [1] BRACKET ASSEM.  
16. 2B-2694 [3] BOLT  
17. 9N-3668 [1] BASE ASSEM.  
    (Includes)
  9N-3645 [1] STUD  
18. 3J-5390 [2] PLUG  
19. 9N-3367 [1] ELEMENT ASSEM.  
20. 5M-2894 [2] WASHER  
 

#SEBP24290069
 

9N-0022: MANIFOLD GP-EXHAUST

9N22 EXHAUST MANIFOLD GROUP
c939422 SEBP2429
9N0022 MANIFOLD GP-EXHAUST Parts scheme
  For full view, you need register

Parts for your 621 WHEEL TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 2N-2766 [12] LOCKNUT  
  5M-2894 [12] WASHER  
2. 7N-8175 [6] GASKET  
3. 9L-5848 [1] MANIFOLD  
4. 4N-0270 [2] MANIFOLD  
5. 5B-7890 [2] PLUG  
6. 2S-3770 [11] SPACER  
 

Information:

Truck Engine News
A New Special Instruction , "Troubleshooting Compressed Air System Components and Performance" Is Available {1803, 5500}
2002/09/01
Special Instruction
Air Compressor Installation Instructions{1803}
Air Compressor Installation Instructions{1803}
Troubleshooting Compressed Air System Components and Performance{1803, 5500}
Troubleshooting Compressed Air System Components and Performance{1803, 5500}
Service Magazine
A New Special Instruction, REHS1428 , "Troubleshooting Compressed Air System Components and Performance" Is Available {1803, 5500}
2002/09/23

Caterpillar Parts SIS Catalog 621 :

LINES GP-AIR COMPRESSOR
8N-6024 LINES GP-AIR COMPRESSOR
LINES GP-AIR
8D-6970 LINES GP-AIR
LINES GP-AIR
8N-5416 LINES GP-AIR
AIR CLEANER GP
4N-2720 AIR CLEANER GP
COOLER GP-TORQUE CONV OIL
4N-2737 COOLER GP-TORQUE CONV OIL
COOLER GP-BRAKE OIL
4N-2856 COOLER GP-BRAKE OIL
COOLER GP-ENGINE OIL
4N-0729 COOLER GP-ENGINE OIL
FAN GP-SUCTION
4N-2741 FAN GP-SUCTION
AIR COMPRESSOR GP
7N-6294 AIR COMPRESSOR GP
TURBOCHARGER GP
8N-5444 TURBOCHARGER GP
TURBOCHARGER GP
7N-9478 TURBOCHARGER GP
CARTRIDGE GP-TURBOCHARGER
8N-0817 CARTRIDGE GP-TURBOCHARGER
LINES GP-TURBOCHARGER OIL
9N-0013 LINES GP-TURBOCHARGER OIL
AFTERCOOLER GP-WATER
4N-9010 AFTERCOOLER GP-WATER
LINES GP-WATER
4N-2474 LINES GP-WATER
FILTER GP-COOLANT
8N-5407 FILTER GP-COOLANT

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699,500 
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ALTORFER INC.
 
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CAROLINA CAT
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