1157471 IDLER & BEARING AS Caterpillar parts
1090, 2290, 320 L, 320B, 320C, 322B L, 322C, 322C FM, 323D LN, 323D SA, 323E L, 324D FM, 324D FM LL, 325 FM L, 325B, 325B L, 325C, 325C FM, 325C L, 325D, 325D FM, 325D FM LL, 325D L, 329D, 329D L, 329...
Rating:
Alternative (cross code) number:
CA1157471
115-7471
1157471
CA1157471
115-7471
1157471
Weight: 234 pounds 106 kg.
EXCAVATOR, UNDERCARRIAGE,
Compatible equipment models: 1157471:
Number on catalog scheme:
1
For full view, you need register
Information:
Probable Causes
Leaking seals
Fuel injector tip
Fuel transfer pump seal
Cracked cylinder headRecommended Actions
Note: The procedures have been listed in order of probability. Complete the procedures in order.
Table 1
Troubleshooting Test Steps Values Results
1. Leaking Seals
A. Remove the injector from the affected cylinder and visually inspect the injector O-ring seals for damage.
If leakage is found and the O-rings are in good repair, there may be a problem with the injector. Replace the injector. Ensure that the new trim files are installed. Refer to Troubleshooting, "Injector Trim File - Install" for details. Use Caterpillar Electronic Technician (ET) to perform a "Fuel System Verification Test". Refer to Troubleshooting, "Injector Solenoid - Test" for details.
If the leakage is not located, add the appropriate dye to the fuel tanks. Run the engine at high idle for several minutes. Shut down the engine and remove the valve covers. Use a black light to check for traces of dye around each injector.
O-ring seal
Result: The injector O-ring seal is damaged.
Repair: Replace the damaged seals. Install the injector onto the engine and confirm that the repair has resolved the problem.
Result: The injector O-ring seal is not damaged.
Proceed to Test Step 2.
2. Fuel Injector Tip
A. Use Cat ET to perform the "Cylinder Cutout Test" in order to identify any cylinders that may be overfueled.
B. A fuel injector tip that is broken or fractured is a possible cause of a cylinder that is being overfueled. If a cylinder is identified by the test, Remove the injector and check the injector tip for damage. Check the fuel injector tip for cracks or breakage.
Injector tip
Result: The fuel injector tip is damaged.
Repair: Replace the suspect injector.
Result: The fuel injector tip is not damaged.
Proceed to Test Step 3.
3. Fuel Transfer Pump Seal
A. Check for fuel leakage around the shaft seal for the fuel transfer pump. Ensure that the weep hole is not plugged.
Pump seal
Result: There is fuel leakage around the shaft seal.
Repair: Replace the fuel transfer pump.
Result There is not fuel leakage around the shaft seal.
Proceed to Test Step 4.
4. Cracked Cylinder Head
A. Look for signs of damage to the internal passages for the fuel supply to the injectors in the cylinder head. Check for pin hole leaks. Refer to Disassembly and Assembly.
Cracked head
Result The internal passages for the fuel supply to the injectors are damaged.
Repair: Repair or replace the cylinder head.
Leaking seals
Fuel injector tip
Fuel transfer pump seal
Cracked cylinder headRecommended Actions
Note: The procedures have been listed in order of probability. Complete the procedures in order.
Table 1
Troubleshooting Test Steps Values Results
1. Leaking Seals
A. Remove the injector from the affected cylinder and visually inspect the injector O-ring seals for damage.
If leakage is found and the O-rings are in good repair, there may be a problem with the injector. Replace the injector. Ensure that the new trim files are installed. Refer to Troubleshooting, "Injector Trim File - Install" for details. Use Caterpillar Electronic Technician (ET) to perform a "Fuel System Verification Test". Refer to Troubleshooting, "Injector Solenoid - Test" for details.
If the leakage is not located, add the appropriate dye to the fuel tanks. Run the engine at high idle for several minutes. Shut down the engine and remove the valve covers. Use a black light to check for traces of dye around each injector.
O-ring seal
Result: The injector O-ring seal is damaged.
Repair: Replace the damaged seals. Install the injector onto the engine and confirm that the repair has resolved the problem.
Result: The injector O-ring seal is not damaged.
Proceed to Test Step 2.
2. Fuel Injector Tip
A. Use Cat ET to perform the "Cylinder Cutout Test" in order to identify any cylinders that may be overfueled.
B. A fuel injector tip that is broken or fractured is a possible cause of a cylinder that is being overfueled. If a cylinder is identified by the test, Remove the injector and check the injector tip for damage. Check the fuel injector tip for cracks or breakage.
Injector tip
Result: The fuel injector tip is damaged.
Repair: Replace the suspect injector.
Result: The fuel injector tip is not damaged.
Proceed to Test Step 3.
3. Fuel Transfer Pump Seal
A. Check for fuel leakage around the shaft seal for the fuel transfer pump. Ensure that the weep hole is not plugged.
Pump seal
Result: There is fuel leakage around the shaft seal.
Repair: Replace the fuel transfer pump.
Result There is not fuel leakage around the shaft seal.
Proceed to Test Step 4.
4. Cracked Cylinder Head
A. Look for signs of damage to the internal passages for the fuel supply to the injectors in the cylinder head. Check for pin hole leaks. Refer to Disassembly and Assembly.
Cracked head
Result The internal passages for the fuel supply to the injectors are damaged.
Repair: Repair or replace the cylinder head.
Cat SIS web machinery list:
Parts idler Caterpillar catalog:
1290T, 1390, 2491, 2590, 325C, 328D LCR, 330B, 330B L, 330C, 330C FM, 330C L, 330D, 330D L, 330D LN, 336D, 336D L, 336D LN, 336D2, 336D2 L, 336E, 336E H, 336E L, 336E LH, 336E LN, 336F L, 340D L, 340D...
315D L, 318E L, 319D, 319D L, 319D LN, 320D, 320D FM, 320D GC, 320D L, 320D LN, 320D LRR, 320D RR, 320D2, 320D2 L, 320E, 320E L, 320E LN, 320E LRR, 320E RR, 321D LCR, 323D L, 323D LN, 323D2 L, 323E L
330, 330 FM L, 330 L, OEMS
320 L, 322 FM L, 325, 325 FM L, 325 LN, 330C, 330D, 336D L, 336D LN, 345D, 349D L, OEMS
1290T, 1390, 2491, 2590, 330, 330 FM L, 330 L, 330B L, 330D, 345C L, 345D, 349D L, 532, 541, 551, 552, 552 2, OEMS, TK732, TK751, TK752
311, 311B, 312, 312B, 315, 315B, 315B FM L, 315B L, 315C, 317, 317B LN, 318B, 318C, 319C, 320 L, 320B, 320B FM LL, 320B L, 320B U, 320C, 320C FM, 320N, 321B, 321C, 325D, 329D L, 345C L, OEMS
517, D5HTSK II, OEMS
320 L, 320N
320, 320 L, 320N
330, 330 FM L, 330 L, OEMS
330, 330 FM L, 330 L, 330B L, OEMS
318B, 320B, 320B L, 320B U, OEMS
574
5Q4194
IDLER & BEARING AS
320B FM LL
320B FM LL
503434
IDLER SHAFT
PR-450
PR-450
503433
IDLER ADJUSTMENT
PR-450
PR-450
503432
IDLER BRACKET
PR-450
PR-450
2086620
IDLER & BEARING AS
1090, 1190T, OEMS, TK711
1090, 1190T, OEMS, TK711
2979108
IDLER GP-FRONT
320C FM
320C FM
1290T, 1390, 2491, 2590, 330, 330 FM L, 330B L, 330D, 345C L, 345D, 349D L, 532, 541, 551, 552, 552 2, OEMS, TK732, TK751, TK752
2070472
IDLER & BEARING AS
1190, 1190T, 1390, 2390, 2391, 521, 522, OEMS, TK721, TK722, TK741
1190, 1190T, 1390, 2390, 2391, 521, 522, OEMS, TK721, TK722, TK741
1363847
IDLER AS
1290T, 1390, 2491, 2590, 325C, 328D LCR, 330B, 330B L, 330C, 330C FM, 330C L, 330D, 330D L, 330D LN, 336D, 336D L, 336D LN, 336D2, 336D2 L, 336E, 336E H, 336E L, 336E LH, 336E LN, 336F L, 340D L, 340D...
1290T, 1390, 2491, 2590, 325C, 328D LCR, 330B, 330B L, 330C, 330C FM, 330C L, 330D, 330D L, 330D LN, 336D, 336D L, 336D LN, 336D2, 336D2 L, 336E, 336E H, 336E L, 336E LH, 336E LN, 336F L, 340D L, 340D...
322, 322 FM L, 322B, 322B L, 322B LN, 322C, 322C FM, 324D, 324D L, 324D LN, 324E, 324E L, 324E LN, 326D L, OEMS