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439-6379 CYLINDER BLOCK GP PART OF 416-6065 ENGINE AR-PRIMARY ALSO AN ATTACHMENT 303E CR MINI HYD EXCAVATOR


BASIC ENGINE
CYLINDER BLOCK GP
CYLINDER HEAD GP
FLYWHEEL GP
GEAR GP
LIFTING GP-ENGINE
MOUNTING GP-ENGINE
PAN GP-OIL
PISTON & ROD GP
VALVE MECHANISM GP


BASIC ENGINE

CYLINDER BLOCK GP
 

#SEBP76210020
 

439-6379: CYLINDER BLOCK GP

439-6379 CYLINDER BLOCK GP
PART OF 416-6065 ENGINE AR-PRIMARY
ALSO AN ATTACHMENT
i05335330 SEBP7621
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Parts for your 303E CR MINI HYD EXCAVATOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 439-7645 Y [1] CYLINDER BLOCK AS  
2. 439-6361 [1] PLUG  
3. 439-6352 [1] GASKET  
4. 439-7579 [1] BEARING AS  
4A. 439-6405 [2] BOLT  
4B. 439-7584 [1] BEARING (STANDARD)  
  439-7585 ABO [1] BEARING (0.20-MM US)  
  439-7586 ABO [1] BEARING (0.40-MM US)  
5. 439-7617 [1] GASKET  
6. 439-6409 [1] COVER  
7. 439-7576 [1] SEAL-OIL  
8. 439-7552 [1] GASKET  
9. 439-7619 [8] BOLT  
10. 439-7620 [9] BOLT  
11. 439-7624 [1] BEARING AS  
11A. 439-6405 [2] BOLT  
11B. 439-7631 [1] BEARING (STANDARD)  
  439-7637 ABO [1] BEARING (0.20-MM US)  
  439-7638 ABO [1] BEARING (0.40-MM US)  
12. 439-6408 [2] BOLT  
13. 439-7625 [1] BEARING AS  
13A. 439-6405 [2] BOLT  
13B. 439-7631 [1] BEARING (STANDARD)  
  439-7637 ABO [1] BEARING (0.20-MM US)  
  439-7638 ABO [1] BEARING (0.40-MM US)  
  A   NOT PART OF THIS GROUP
  B   USE AS REQUIRED
  O   OPTIONAL SERVICE REPLACEMENT
  Y   SEPARATE ILLUSTRATION
 

#SEBP76210021
 

439-6404: CYLINDER HEAD GP

439-6404 CYLINDER HEAD GP
PART OF 416-6065 ENGINE AR-PRIMARY
ALSO AN ATTACHMENT
i05335325 SEBP7621
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Parts for your 303E CR MINI HYD EXCAVATOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 439-7647 [1] CYLINDER HEAD AS  
1A. 388-7434 [1] CAP  
1B. 383-0283 [2] PLUG  
1C. 389-0691 [3] GUIDE-VALVE (INLET)  
1D. 389-0692 [3] GUIDE-VALVE (EXHAUST)  
1E. 389-5103 [2] CAP  
2. 439-6402 [14] BOLT  
3. 439-7609 [1] GASKET-CYLINDER HEAD  
 

#SEBP76210022
 

439-7730: FLYWHEEL GP

439-7730 FLYWHEEL GP
PART OF 416-6065 ENGINE AR-PRIMARY
ALSO AN ATTACHMENT
i05335305 SEBP7621
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Parts for your 303E CR MINI HYD EXCAVATOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 439-7668 [1] FLYWHEEL AS  
1A. 439-7589 [1] GEAR-RING  
2. 439-6428 [6] BOLT  
3. 439-7674 [1] HOUSING-FLYWHEEL  
4. 439-6368 [8] BOLT  
5. 383-0598 [1] COVER  
6. 383-0169 [1] BOLT  
7. 383-0205 [1] WASHER  
8. 439-6343 [2] BOLT  
 

#SEBP76210023
 

439-6406: HOUSING GP-FRONT

439-6406 HOUSING GP-FRONT
PART OF 416-6065 ENGINE AR-PRIMARY
ALSO AN ATTACHMENT
i05335324 SEBP7621
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Parts for your 303E CR MINI HYD EXCAVATOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 439-7648 Y [1] HOUSING GP-FRONT  
2. 439-7623 [1] GASKET  
3. 439-6338 [3] BOLT  
4. 383-0167 [4] BOLT  
5. 439-6339 [2] BOLT  
6. 439-6340 [2] BOLT  
7. 439-6341 [6] BOLT  
8. 439-6457 [1] STUD  
9. 383-0198 [1] NUT-FLANGE  
10. 439-6403 [1] SEAL-OIL  
11. 393-2917 [2] STUD  
12. 439-7559 [1] COVER  
13. 436-0817 [1] PLUG AS (ENGINE OIL FILLER)  
13A. 383-0217 [1] SEAL-O-RING  
  Y   SEPARATE ILLUSTRATION
 

#SEBP76210024
 

439-7648: HOUSING GP-FRONT

439-7648 HOUSING GP-FRONT
PART OF 439-6406 HOUSING GP-FRONT
ALSO AN ATTACHMENT
i05335799 SEBP7621
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Parts for your 303E CR MINI HYD EXCAVATOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 418-0931 [1] CAP  
2. 383-0336 [2] PLUG  
3. 383-0303 [1] PLUG  
4. 439-6349 [1] WASHER  
5. 439-6367 [1] ADAPTER  
6. 439-7658 [1] SPRING  
7. 439-7657 [1] VALVE-RELIEF  
8. 439-7654 [1] ROTOR AS  
9. 439-7655 [1] COVER  
10. 418-0976 [5] SCREW-SPECIAL  
 

#SEBP76210025
 

439-6399: LIFTING GP-ENGINE

439-6399 LIFTING GP-ENGINE
PART OF 416-6065 ENGINE AR-PRIMARY
ALSO AN ATTACHMENT
i05335327 SEBP7621
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Parts for your 303E CR MINI HYD EXCAVATOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 439-6400 [1] PLATE  
2. 439-6401 [1] PLATE  
3. 383-0169 [2] BOLT  
 

#SEBP76210026
 

424-3196: MOUNTING GP-ENGINE

424-3196 MOUNTING GP-ENGINE
PART OF 473-4914 CANOPY AR, 473-4915 INSTALLATION AR-MACHINE
AN ATTACHMENT
i05317828 SEBP7621
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Parts for your 303E CR MINI HYD EXCAVATOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 163-6838 [4] STOP  
2. 176-8440 [2] STOP  
3. 419-6010 [8] MOUNT-RUBBER  
4. 424-3198 [1] SUPPORT AS  
5. 424-3200 [1] SUPPORT AS  
6. 5P-1076 [2] WASHER-HARD (13.5X30X4-MM THK)  
7. 7X-2550 M [4] BOLT (M12X1.75X110-MM)  
8. 8T-4121 [8] WASHER-HARD (11X21X2.5-MM THK)  
9. 8T-4223 [2] WASHER-HARD (13.5X25.5X3-MM THK)  
10. 8T-4821 [2] WASHER (13.5X40X3-MM THK)  
11. 9X-8912 M [8] BOLT (M10X1.25X30-MM)  
  M   METRIC PART
 

#SEBP76210027
 

439-6387: PAN GP-OIL

439-6387 PAN GP-OIL
PART OF 416-6065 ENGINE AR-PRIMARY
ALSO AN ATTACHMENT
i05335329 SEBP7621
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Parts for your 303E CR MINI HYD EXCAVATOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 439-7646 [1] PAN-OIL  
2. 386-6918 [1] PLUG  
3. 386-6919 [1] GASKET  
4. 383-0313 [1] PLUG  
5. 388-7437 [1] GASKET  
6. 418-1502 [26] BOLT  
7. 439-7639 [1] STRAINER  
8. 389-5233 [1] SEAL-O-RING  
9. 383-0170 [1] BOLT  
 

#SEBP76210028
 

439-7685: PISTON GP

439-7685 PISTON GP
PART OF 416-6065 ENGINE AR-PRIMARY
ALSO AN ATTACHMENT
i05335316 SEBP7621
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Parts for your 303E CR MINI HYD EXCAVATOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 439-7661 J [3] PISTON (STANDARD)  
  439-7664 ABL PISTON (0.50-MM OS)  
2. 439-7651 J [3] RING AS-PISTON (STANDARD)  
  439-7653 ABL RING AS-PISTON (0.50-MM OS)  
3. 439-6420 JL [3] PIN-PISTON  
4. 439-6421 JL [6] RING-SNAP  
5. 439-7580 [3] ROD AS  
    (EACH INCLUDES)
  439-6422 [2] BOLT  
  439-7581 [1] BEARING  
  439-7629 JL [1] BEARING  
   
    AVAILABLE REPAIR KIT(S):
  439-7662 J [3] KIT-PISTON (STANDARD)  
    (INCLUDES PIN, RINGS, BEARING, PISTON RING AS & PISTON)
  439-7663 L [3] KIT-PISTON (0.50-MM OS)  
    (INCLUDES PIN, RING, BEARING, PISTON RING AS & PISTON)
  A   NOT PART OF THIS GROUP
  B   USE AS REQUIRED
  J   KIT MARKED J SERVICES PART(S) MARKED J
  L   KIT MARKED L SERVICES PART(S) MARKED L
 

#SEBP76210029
 

439-7751: VALVE MECHANISM GP

439-7751 VALVE MECHANISM GP
PART OF 416-6065 ENGINE AR-PRIMARY
ALSO AN ATTACHMENT
i05335274 SEBP7621
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Parts for your 303E CR MINI HYD EXCAVATOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 439-7612 [3] VALVE-INLET  
2. 439-7613 [3] VALVE-EXHAUST  
3. 439-7561 [6] SPRING-VALVE  
4. 389-0698 [6] RETAINER  
5. 389-0699 [6] GUIDE-SPRING  
6. 389-0700 [6] SEAL  
7. 439-6410 [6] CAP  
8. 439-7544 [1] SHAFT  
9. 393-7502 [2] BOLT-FLANGE HEAD  
10. 439-6415 [3] BRACKET  
11. 439-6357 [1] PIN  
12. 439-6416 [2] WASHER  
13. 439-6383 [2] WASHER  
14. 439-6414 [2] SPRING  
15. 439-6411 [6] ARM AS (VALVE MECHANISM)  
15A. 439-6412 [1] SCREW  
15B. 439-6413 [1] NUT  
16. 439-7643 [3] BOLT  
 

Information:

Caterpillar Parts SIS Catalog 303E CR :

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