OPERATOR STATION
CONSOLE GPHYDRAULIC SYSTEM
VALVE GP-PILOTFUEL SYSTEM
CONTROL GP-GOVERNOROPERATOR STATION
AIR CONDITIONER GPCONTROL GP-HYDRAULIC
MONITOR GP
DOOR GP
DUCT GP
OPERATOR STATION
CONSOLE GP#SEBP51220470
421-1434: CONSOLE GP-OPERATOR
421-1434 CONSOLE GP-OPERATOR -LH
S/N F7B1-UP
PART OF 259-7349 CONSOLE GP-OPERATOR
S/N F7B1-UP
PART OF 259-7349 CONSOLE GP-OPERATOR
Parts for your 521B TRACK FELLER BUNCHER:
CATERPILLAR SIS| Pos. | Part No | Qty | Parts name | Comments |
|---|---|---|---|---|
| 1. | 128-2135 M | [5] | SCREW-TRUSS HEAD (M6X1X13-MM) | |
| 2. | 171-7325 M | [3] | SCREW-TAPPING (M5X0.8-THD) | |
| 3. | 234-6579 | [6] | NUT-SPEED | |
| 4. | 234-6580 | [4] | CAP | |
| 5. | 234-6603 | [1] | COVER | |
| 6. | 234-6605 | [1] | COVER | |
| 7. | 234-6608 | [1] | COVER | |
| 8. | 234-6609 | [1] | COVER | |
| 9. | 234-6610 | [1] | COVER | |
| 11. | 234-6612 | [1] | COVER | |
| 12. | 234-6613 Y | [1] | LEVER GP-CONTROL (HYDRAULIC LOCKOUT) | |
| 13. | 234-6614 | [1] | COVER | |
| 14. | 235-8914 | [4] | NUT-SPEED | |
| 15. | 235-8965 | [1] | GUARD | |
| 16. | 245-7790 | [3] | SCREW-TAPPING | |
| 17. | 245-7925 | [1] | SUPPORT AS | |
| 18. | 245-7948 | [7] | SCREW-TAPPING | |
| 19. | 259-7202 | [1] | ASHTRAY | |
| 20. | 259-7347 Y | [1] | ARMREST GP (LH) | |
| 21. | 9X-2041 M | [3] | SCREW-TRUSS HEAD (M10X1.5X20-MM) | |
| 22. | 9X-2042 M | [2] | SCREW-TRUSS HEAD (M6X1X12-MM) | |
| M | METRIC PART | |||
| Y | SEPARATE ILLUSTRATION | |||
#SEBP51220471
224-4990: CONTROL & MTG GP-JOYSTICK
224-4990 CONTROL & MTG GP-JOYSTICK -FELLING HEAD
S/N F7B1-290
PART OF 362-3893 OPERATOR AR
S/N F7B1-290
PART OF 362-3893 OPERATOR AR
Parts for your 521B TRACK FELLER BUNCHER:
CATERPILLAR SIS| Pos. | Part No | Qty | Parts name | Comments |
|---|---|---|---|---|
| 1. | 223-0539 | [2] | CONTROL GP-PEDAL (TRAVEL) | |
| (EACH INCLUDES) | ||||
| 186-3735 | [5] | PIN-CONNECTOR (16-GA TO 18-GA) | ||
| 8T-8737 | [1] | PLUG-SEAL | ||
| 102-8805 | [1] | KIT-RECEPTACLE (6-PIN) | ||
| (INCLUDES RECEPTACLE AS & WEDGE) | ||||
| 2. | 224-8173 | [4] | PLATE | |
| 3. | 297-6429 | [1] | BRACKET AS (LH) | |
| 4. | 297-6430 | [1] | BRACKET AS (RH) | |
| 5. | 297-6439 | [2] | PLATE | |
| 6. | 307-5476 | [2] | TAPE | |
| 7. | 359-4143 C | [1] | CONTROL GP-JOYSTICK (LH) | |
| 8. | 359-4144 C | [1] | CONTROL GP-HAND (RH) | |
| 9. | 7X-2619 M | [6] | BOLT (M6X1X10-MM) | |
| 10. | 8T-4121 | [4] | WASHER-HARD (11X21X2.5-MM THK) | |
| 11. | 8T-4186 M | [4] | BOLT (M10X1.5X40-MM) | |
| 12. | 9X-8256 | [6] | WASHER (6.6X12X2-MM THK) | |
| C | CHANGE FROM PREVIOUS TYPE | |||
| M | METRIC PART | |||
#SEBP51220472
224-4990: CONTROL & MTG GP-JOYSTICK
224-4990 CONTROL & MTG GP-JOYSTICK -FELLING HEAD
S/N F7B291-UP
PART OF 362-3893 OPERATOR AR
Type 1
S/N F7B291-UP
PART OF 362-3893 OPERATOR AR
Type 1
Parts for your 521B TRACK FELLER BUNCHER:
CATERPILLAR SIS| Pos. | Part No | Qty | Parts name | Comments |
|---|---|---|---|---|
| 1. | 223-0539 | [2] | CONTROL GP-PEDAL (TRAVEL) | |
| (EACH INCLUDES) | ||||
| 8T-8737 | [1] | PLUG-SEAL | ||
| 8T-8729 | [5] | PIN-CONNECTOR (16-GA TO 18-GA) | ||
| 3E-3383 | [1] | WEDGE-RECEPTACLE LOCK (6-PIN) | ||
| 102-8805 | [1] | KIT-RECEPTACLE (6-PIN) | ||
| (INCLUDES RECEPTACLE AS & WEDGE) | ||||
| 2. | 224-8173 | [4] | PLATE | |
| 3. | 297-6429 | [1] | BRACKET AS (LH) | |
| 4. | 297-6430 | [1] | BRACKET AS (RH) | |
| 5. | 297-6439 | [2] | PLATE | |
| 6. | 307-5476 | [2] | TAPE | |
| 7. | 359-4143 | [1] | CONTROL GP-JOYSTICK (LH) | |
| 8. | 467-5408 C | [1] | CONTROL GP-JOYSTICK (RH) | |
| 9. | 7X-2619 M | [6] | BOLT (M6X1X10-MM) | |
| 10. | 8T-4121 | [4] | WASHER-HARD (11X21X2.5-MM THK) | |
| 11. | 8T-4186 M | [4] | BOLT (M10X1.5X40-MM) | |
| 12. | 9X-8256 | [6] | WASHER (6.6X12X2-MM THK) | |
| 13. | E | TAPE-FOAM (7-CM EACH) | ||
| C | CHANGE FROM PREVIOUS TYPE | |||
| E | ORDER BY THE CENTIMETER | |||
| M | METRIC PART | |||
#SEBP51220473
224-4990: CONTROL & MTG GP-JOYSTICK
224-4990 CONTROL & MTG GP-JOYSTICK -FELLING HEAD
S/N F7B291-UP
PART OF 362-3893 OPERATOR AR
Type 2
S/N F7B291-UP
PART OF 362-3893 OPERATOR AR
Type 2
Parts for your 521B TRACK FELLER BUNCHER:
CATERPILLAR SIS| Pos. | Part No | Qty | Parts name | Comments |
|---|---|---|---|---|
| 1. | 223-0539 | [2] | CONTROL GP-PEDAL (TRAVEL) | |
| (EACH INCLUDES) | ||||
| 8T-8737 | [1] | PLUG-SEAL | ||
| 3E-3390 | [5] | PIN-CONNECTOR | ||
| 3E-3383 | [1] | WEDGE-RECEPTACLE LOCK (6-PIN) | ||
| 102-8805 | [1] | KIT-RECEPTACLE (6-PIN) | ||
| (INCLUDES RECEPTACLE AS & WEDGE) | ||||
| 2. | 224-8173 | [4] | PLATE | |
| 3. | 297-6429 | [1] | BRACKET AS (LH) | |
| 4. | 297-6430 | [1] | BRACKET AS (RH) | |
| 5. | 297-6439 | [2] | PLATE | |
| 6. | 307-5476 B | [2] | TAPE | |
| 7. | 544-4980 C | [1] | CONTROL GP-JOYSTICK (LH) | |
| 8. | 544-4981 C | [1] | CONTROL GP-JOYSTICK (RH) | |
| 9. | 7X-2619 M | [6] | BOLT (M6X1X10-MM) | |
| 10. | 8T-4121 | [4] | WASHER-HARD (11X21X2.5-MM THK) | |
| 11. | 8T-4186 M | [4] | BOLT (M10X1.5X40-MM) | |
| 12. | 9X-8256 | [6] | WASHER (6.6X12X2-MM THK) | |
| 13. | B | TAPE-FOAM | ||
| B | USE AS REQUIRED | |||
| C | CHANGE FROM PREVIOUS TYPE | |||
| M | METRIC PART | |||
#SEBP51220474
238-8167: CONTROL & MTG GP-PEDAL
Parts for your 521B TRACK FELLER BUNCHER:
CATERPILLAR SIS#SEBP51220475
300-4231: CONTROL GP-AIR & TEMPERATURE
300-4231 CONTROL GP-AIR & TEMPERATURE
S/N F7B302-UP
PART OF 365-1387 WIRING GP-CAB
S/N F7B302-UP
PART OF 365-1387 WIRING GP-CAB
Parts for your 521B TRACK FELLER BUNCHER:
CATERPILLAR SIS| Pos. | Part No | Qty | Parts name | Comments |
|---|---|---|---|---|
| 1. | 248-4220 | [1] | PANEL AS (AIR CONDITIONER, HEATER CONT) | |
| 1A. | 271-7312 | [1] | KNOB (TEMPERATURE CONTROL) | |
| 1B. | 285-7415 | [1] | KNOB (BLOWER FAN SPEED) | |
| 2. | 284-3662 | [1] | SWITCH AS-ROCKER (24-VOLT)(AIR CONDITIONER ON, OFF) | |
| 3. | 9X-2045 M | [2] | SCREW-TRUSS HEAD (M6X1X20-MM) | |
| M | METRIC PART | |||
#SEBP51220476
231-2613: CONTROL GP-HYDRAULIC PEDAL
231-2613 CONTROL GP-HYDRAULIC PEDAL
S/N F7B1-UP
PART OF 238-8167 CONTROL & MTG GP-PEDAL
S/N F7B1-UP
PART OF 238-8167 CONTROL & MTG GP-PEDAL
Parts for your 521B TRACK FELLER BUNCHER:
CATERPILLAR SIS| Pos. | Part No | Qty | Parts name | Comments |
|---|---|---|---|---|
| 1. | 117-6349 | [1] | PEDAL AS (LH) | |
| 8T-3490 M | [2] | NUT-WELD (M10X1.5-THD) | ||
| 2. | 117-6350 | [1] | PEDAL AS (RH) | |
| 8T-3490 M | [2] | NUT-WELD (M10X1.5-THD) | ||
| 3. | 117-6356 | [2] | STEP AS | |
| 4. | 122-9608 | [1] | PEDAL-RUBBER (RH) | |
| 5. | 122-9609 | [1] | PEDAL-RUBBER (LH) | |
| 6. | 122-9610 | [2] | STEP | |
| 7. | 8T-4121 | [4] | WASHER-HARD (11X21X2.5-MM THK) | |
| 8. | 8T-4137 M | [4] | BOLT (M10X1.5X20-MM) | |
| 9. | 8T-4200 M | [4] | BOLT (M8X1.25X16-MM) | |
| 10. | 8T-4224 | [4] | WASHER-HARD (8.8X16X2-MM THK) | |
| M | METRIC PART | |||
#SEBP51220477
368-3009: CONTROL GP-MONITOR
Parts for your 521B TRACK FELLER BUNCHER:
CATERPILLAR SIS#SEBP51220478
334-1077: DOOR GP-CAB
Parts for your 521B TRACK FELLER BUNCHER:
CATERPILLAR SIS| Pos. | Part No | Qty | Parts name | Comments |
|---|---|---|---|---|
| 1. | 2A-6397 | [2] | STRAP | |
| 2. | 6G-9485 | [1] | LEVER | |
| 3. | 8T-1814 | [2] | BRACKET-HANDLE | |
| 4. | 8T-3504 | [1] | HANDLE AS-INSIDE | |
| 5. | 8Y-6359 J | [1] | HANDLE AS | |
| 8Y-4501 | [1] | SPRING-HANDLE | ||
| 6. | 9X-2546 M | [2] | BOLT (M6X1X20-MM) | |
| 7. | 090-9554 | [2] | STUD-BALL | |
| 8. | 144-4107 | [2] | FASTENER | |
| 9. | 191-5077 | [4] | STRAP | |
| 10. | 247-4330 | [1] | PLATE | |
| 11. | 334-1089 | [1] | PLATE | |
| 12. | 247-4332 | [1] | PLATE | |
| 13. | 247-4333 | [1] | PLATE | |
| 14. | 247-4335 | [1] | PLATE | |
| 15. | 334-1091 | [1] | COVER | |
| 16. | 360-9597 | [1] | STRIKER AS | |
| 17. | 334-1092 | [1] | COVER AS | |
| 18. | 281-9217 | [1] | BRACKET AS | |
| 19. | 282-1960 | [1] | HINGE | |
| 20. | 282-2061 | [1] | BRACKET AS | |
| 21. | 282-2154 | [1] | BRACKET AS | |
| 8T-3612 M | [1] | NUT-WELD (M8X1.25-THD) | ||
| 22. | 282-3007 M | [18] | SCREW-FLAT HEAD (M8X1.25X30-MM) | |
| 23. | 293-8877 | [1] | SEAL | |
| 24. | 293-8878 | [1] | SEAL | |
| 25. | 293-8879 | [1] | SEAL | |
| 26. | 334-1081 | [1] | DOOR AS-CAB | |
| 27. | 334-1153 | [1] | LATCH-DOOR | |
| 28. | 334-1156 | [1] | LINK AS | |
| 29. | 334-1157 | [1] | LINK AS | |
| (EACH LINK AS INCLUDES) | ||||
| 6V-8185 | [1] | NUT (1/4-20-THD) | ||
| 108-5471 | [1] | CLEVIS | ||
| 30. | 334-1571 | [1] | STRUT | |
| 31. | 3E-4352 | [14] | WASHER-HARD (8.8X20.5X2.5-MM THK) | |
| 32. | 3E-4353 | [2] | WASHER-HARD (11X25X3-MM THK) | |
| 33. | 4I-8439 M | [4] | SCREW (M8X1.25X16-MM) | |
| 34. | 6V-2687 | [4] | SCREW-PAN HEAD (10-24X1-IN) | |
| 35. | 6V-7357 M | [4] | BOLT (M6X1X25-MM) | |
| 36. | 6V-7636 | [4] | PIN AS-SPRING | |
| 37. | 6V-8225 M | [2] | NUT (M6X1-THD) | |
| 38. | 8T-4136 M | [2] | BOLT (M10X1.5X25-MM) | |
| 39. | 8T-4189 M | [4] | BOLT (M8X1.25X20-MM) | |
| 40. | 8T-4205 | [4] | WASHER-HARD (7.2X14.5X2-MM THK) | |
| 41. | 8T-4908 M | [2] | BOLT (M8X1.25X25-MM) | |
| 42. | 8T-7547 M | [8] | BOLT (M8X1.25X30-MM) | |
| 43. | 8Y-4614 | [1] | SEAL-HANDLE | |
| 44. | 9X-2044 M | [4] | SCREW-TRUSS HEAD (M6X1X16-MM) | |
| 45. | 9X-8256 | [2] | WASHER (6.6X12X2-MM THK) | |
| 46. | 178-8894 E | SEAL (388-CM) | ||
| E | ORDER BY THE CENTIMETER | |||
| J | REQUIRES CORPORATE KEY | |||
| M | METRIC PART | |||
#SEBP51220479
365-3556: DUCT GP-CAB AIR
Parts for your 521B TRACK FELLER BUNCHER:
CATERPILLAR SIS| Pos. | Part No | Qty | Parts name | Comments |
|---|---|---|---|---|
| 1. | 112-7448 | [1] | FILTER ELEMENT-CAB AIR (STANDARD EFFICIENCY) | |
| 2. | 164-8474 | [10] | LOUVER AS-VENT | |
| 3. | 171-4047 | [2] | LOUVER AS-VENT | |
| 4. | 186-5107 | [2] | SCREW-DRIVE (NO 8-16X1.25-IN) | |
| 5. | 239-1380 | [1] | DUCT | |
| 6. | 8T-5005 M | [2] | BOLT (M10X1.5X70-MM) | |
| 7. | 422-2152 | [3] | LOUVER AS-VENT | |
| 8. | 243-6307 | [1] | DUCT AS | |
| 9. | 243-6310 | [1] | DUCT AS | |
| 10. | 358-6603 | [1] | DUCT AS | |
| 11. | 358-6604 | [1] | DUCT AS | |
| 12. | 100-9992 | [2] | WASHER (4.8X25X2-MM THK) | |
| 13. | 104-2091 | [10] | SCREW-FLAT HEAD (6-20X0.5-IN) | |
| 14. | 7X-0772 | [9] | WASHER-HARD (10.2X25.5X2.5-MM THK) | |
| 15. | 8T-4137 M | [5] | BOLT (M10X1.5X20-MM) | |
| 16. | 8T-4136 M | [2] | BOLT (M10X1.5X25-MM) | |
| 175-2838 AF | [1] | FILTER ELEMENT-CAB AIR (ULTRA HIGH EFFICIENCY) | ||
| A | NOT PART OF THIS GROUP | |||
| F | NOT SHOWN | |||
| M | METRIC PART | |||
Information:
OPERATOR STATION
CONSOLE GP
Operation and Maintenance Manual
Testing and Adjusting
Caterpillar Parts SIS Catalog 521B :
Truck sale:
CATERPILLAR 521B 2015
- FORESTRY - FELLER BUNCHERS - TRACK
MICHIGAN CAT
US (Mid, North), Canada, ON West: John Kinney; US (NE, SE, SW), Canada QU East, AUS: Bill Dowd;
- FORESTRY - FELLER BUNCHERS - TRACK
MICHIGAN CAT
US (Mid, North), Canada, ON West: John Kinney; US (NE, SE, SW), Canada QU East, AUS: Bill Dowd;




