2431276 BELT-SERPENTINE Caterpillar parts
365C, 365C L, 365C L MH, 374D L, 385C, 385C FS, 385C L, 385C L MH, 390D, 390D L, C15, C18, CX35-P800
Rating:
Alternative (cross code) number:
CA2431276
243-1276
2431276
CA2431276
243-1276
2431276
Weight: 0.75 pounds 0 kg.
EXCAVATOR, PETROLEUM PACKAGE,
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$33.67
23 Jan 2023
Amazon.com
CTP 2431276 External Engine Serpentine Belt, 8 Ribs, 2555 mm Length
CTP For External Engine || 8 Ribs || 2555 mm Length
CTP For External Engine || 8 Ribs || 2555 mm Length
$34.23
06 Jan 2023
Amazon.com
CTP 2431276 External Engine Serpentine Belt, 8 Ribs, 2555 mm Length
CTP For External Engine || 8 Ribs || 2555 mm Length
CTP For External Engine || 8 Ribs || 2555 mm Length
Compatible equipment models: 2431276:
Information:
Introduction
This troubleshooting guide can be an aid for the service personnel to find the cause of existing problems. Several common problems are covered in the guide, but these problems are not arranged in any particular sequence.Identify your particular type of problem from the Troubleshooting Index, then go directly to that problem in the guide. However, when you begin the procedure for that problem, start at Step 1 and follow through the step by step procedure. The steps that follow in a particular problem provide a definite sequence to be followed for a logical, one by one elimination of many variables. These steps are arranged in order from the more probable/easiest to check, to the less probable/more complex to check.Whenever the cause of the problem is found and corrected, stop the test. Do not continue through the complete procedure just because it is there.Governor Only
Problem No. 1: Governor Does Not Open On Starting
Probable Cause:1. No signal from magnetic pickup. Verify with AC voltmeter or Oscilloscope.Excessive pickup clearance. Adjust clearance to 0.5 to 0.8 mm (.02 to .03 in) if necessary.Check resistance at cable socket of governor control unit A2/B2 (approx. 200 ohms). Replace cable or speed pickup if needed.Check starting speed voltage at cable socket of governor control unit A2/B2 (approx. 5V AC). Replace or clean speed pickup if needed. The governor must have its own speed pickup. It cannot share a pickup with another device.Wiring fault - magnetic pickup defective. Repair or replace as needed.Control lamp must be lit when power supply is on and must go out from starting frequency upwards. If the governor works with the governor test unit but not on the engine, the fault is in the speed pickup or speed pickup cable.2. Shutdown switch on.Disconnect shutdown at pins H3 & I3 for troubleshooting.3. Set point potentiometer connections wrong or incomplete.Disconnect 14 pin connector from governor control unit and use ohmmeter to verify the resistance at the cable socket of the wiring harness.Remote speed set point potentiometer at minimum speed: Remote speed set point potentiometer at maximum speed: 4. Set point potentiometer or maximum speed/low speed potentiometer settings too low.Verify speeds are correct with governor test unit.5. Wiring fault in cable harness.6. Supply voltage inadequate or polarity reversed.Verify with DC voltmeter.7. No DC voltage at governor control unit.Verify with DC voltmeter.8. Actuator impeded or linkage adjusted wrong.Manually move linkage to verify.9. Start fuel limit incorrectly adjusted (if used).Put start fuel limit switch in position 2 or 3. Try to start engine. If engine starts, shut down engine, put start fuel limit slide switch in position 4. Re-adjust start fuel limit according to "Start Fuel Limit Adjustment" procedure in the Initial Checks & Adjustments section.10. Open or shorted speed pickup cable or speed set point cable.Verify with ohmmeter.11. Actuator defective.Check resistance at terminals B-C on actuator (approx. 2 ohms).Replace actuator.12. Governor control unit defective.Replace governor control unit.Problem No. 2: Governor Moves To Maximum Fuel Injection When Power Supply Is On
Probable Cause:1. Wiring fault in harness.2.
This troubleshooting guide can be an aid for the service personnel to find the cause of existing problems. Several common problems are covered in the guide, but these problems are not arranged in any particular sequence.Identify your particular type of problem from the Troubleshooting Index, then go directly to that problem in the guide. However, when you begin the procedure for that problem, start at Step 1 and follow through the step by step procedure. The steps that follow in a particular problem provide a definite sequence to be followed for a logical, one by one elimination of many variables. These steps are arranged in order from the more probable/easiest to check, to the less probable/more complex to check.Whenever the cause of the problem is found and corrected, stop the test. Do not continue through the complete procedure just because it is there.Governor Only
Problem No. 1: Governor Does Not Open On Starting
Probable Cause:1. No signal from magnetic pickup. Verify with AC voltmeter or Oscilloscope.Excessive pickup clearance. Adjust clearance to 0.5 to 0.8 mm (.02 to .03 in) if necessary.Check resistance at cable socket of governor control unit A2/B2 (approx. 200 ohms). Replace cable or speed pickup if needed.Check starting speed voltage at cable socket of governor control unit A2/B2 (approx. 5V AC). Replace or clean speed pickup if needed. The governor must have its own speed pickup. It cannot share a pickup with another device.Wiring fault - magnetic pickup defective. Repair or replace as needed.Control lamp must be lit when power supply is on and must go out from starting frequency upwards. If the governor works with the governor test unit but not on the engine, the fault is in the speed pickup or speed pickup cable.2. Shutdown switch on.Disconnect shutdown at pins H3 & I3 for troubleshooting.3. Set point potentiometer connections wrong or incomplete.Disconnect 14 pin connector from governor control unit and use ohmmeter to verify the resistance at the cable socket of the wiring harness.Remote speed set point potentiometer at minimum speed: Remote speed set point potentiometer at maximum speed: 4. Set point potentiometer or maximum speed/low speed potentiometer settings too low.Verify speeds are correct with governor test unit.5. Wiring fault in cable harness.6. Supply voltage inadequate or polarity reversed.Verify with DC voltmeter.7. No DC voltage at governor control unit.Verify with DC voltmeter.8. Actuator impeded or linkage adjusted wrong.Manually move linkage to verify.9. Start fuel limit incorrectly adjusted (if used).Put start fuel limit switch in position 2 or 3. Try to start engine. If engine starts, shut down engine, put start fuel limit slide switch in position 4. Re-adjust start fuel limit according to "Start Fuel Limit Adjustment" procedure in the Initial Checks & Adjustments section.10. Open or shorted speed pickup cable or speed set point cable.Verify with ohmmeter.11. Actuator defective.Check resistance at terminals B-C on actuator (approx. 2 ohms).Replace actuator.12. Governor control unit defective.Replace governor control unit.Problem No. 2: Governor Moves To Maximum Fuel Injection When Power Supply Is On
Probable Cause:1. Wiring fault in harness.2.
Caterpillar parts catalog:
Parts belt Caterpillar catalog:
1184914
BELT TIGHTENER GP
3406E, 3456, C-15, C-16, C15, C18, CX31-C15I, CX35-P800, TH35-C15I
3406E, 3456, C-15, C-16, C15, C18, CX31-C15I, CX35-P800, TH35-C15I
3167715
BELT GP-SERPENTINE
C18, CX35-P800
C18, CX35-P800
1900642
BELT TENSIONER
3126, 3126B, 3406E, 345B II, 621B, 621G, 623G, 627F, 627G, 631D, 631E, 631G, 637D, 637E, 637G, 657E, 657G, 773F, 775F, 777C, 777D, 793F, 793F-XQ, 795F AC, 797, 797B, 797F, 854K, 924H, 924HZ, 928HZ, 99...
3126, 3126B, 3406E, 345B II, 621B, 621G, 623G, 627F, 627G, 631D, 631E, 631G, 637D, 637E, 637G, 657E, 657G, 773F, 775F, 777C, 777D, 793F, 793F-XQ, 795F AC, 797, 797B, 797F, 854K, 924H, 924HZ, 928HZ, 99...
2178938
BELT TENSIONER
24M, 3126B, 3406E, 735, 740, 770, 772, 793F, 824C, 824G II, 824H, 825G II, 825H, 826G II, 826H, 834G, 834H, 836G, 836H, 844H, 980G, 980G II, 980H, 986H, 988G, 988H, 990H, AD55B, AD60, C-15, C-16, C15,...
24M, 3126B, 3406E, 735, 740, 770, 772, 793F, 824C, 824G II, 824H, 825G II, 825H, 826G II, 826H, 834G, 834H, 836G, 836H, 844H, 980G, 980G II, 980H, 986H, 988G, 988H, 990H, AD55B, AD60, C-15, C-16, C15,...
3298797
BELT TENSIONER
24M, 621B, 621G, 623G, 627F, 627G, 631D, 631E, 631G, 633E II, 637D, 637E, 637G, 657E, 657G, 735B, 740B, 770G, 770G OEM, 772G, 772G OEM, 777C, 777D, 777F, 793F, 793F AC, 793F CMD, 793F OEM, 793F-XQ, 79...
24M, 621B, 621G, 623G, 627F, 627G, 631D, 631E, 631G, 633E II, 637D, 637E, 637G, 657E, 657G, 735B, 740B, 770G, 770G OEM, 772G, 772G OEM, 777C, 777D, 777F, 793F, 793F AC, 793F CMD, 793F OEM, 793F-XQ, 79...
1900649
BELT TENSIONER
12M, 140G, 140H, 140M, 143H, 14H, 160H, 163H, 16H, 3126B, 3126E, 3176C, 3196, 3406E, 385B, 5090B, 725, 730, AD30, BG-2455D, C-10, C-12, C-15, C-16, C-18, C15, C18, C7, C9, CX31-C9I, CX35-P800, TH31-E6...
12M, 140G, 140H, 140M, 143H, 14H, 160H, 163H, 16H, 3126B, 3126E, 3176C, 3196, 3406E, 385B, 5090B, 725, 730, AD30, BG-2455D, C-10, C-12, C-15, C-16, C-18, C15, C18, C7, C9, CX31-C9I, CX35-P800, TH31-E6...
3368955
BELT TENSIONER
AD45B, AD55, C-15, C-16, C15, TH35-C15T
AD45B, AD55, C-15, C-16, C15, TH35-C15T
3748474
BELT-SERPENTINE
C15, C18
C15, C18
1974567
BELT-SERPENTINE
120H, 135H, 3126B, C15, C9, CX31-C15I, TH35-C15I
120H, 135H, 3126B, C15, C9, CX31-C15I, TH35-C15I
3167714
BELT-SERPENTINE
C18, CX35-P800
C18, CX35-P800
2841215
BELT-SERPENTINE
C18, CX35-P800
C18, CX35-P800
3414938
BELT-SERPENTINE
621B, 621G, 623G, 627F, 627G, 631D, 631E, 631G, 633E II, 637D, 637E, 637G, 657E, 657G, C18, CX35-P800
621B, 621G, 623G, 627F, 627G, 631D, 631E, 631G, 633E II, 637D, 637E, 637G, 657E, 657G, C18, CX35-P800
3414938
BELT-SERPENTINE
621B, 621G, 623G, 627F, 627G, 631D, 631E, 631G, 633E II, 637D, 637E, 637G, 657E, 657G, C18, CX35-P800
621B, 621G, 623G, 627F, 627G, 631D, 631E, 631G, 633E II, 637D, 637E, 637G, 657E, 657G, C18, CX35-P800
2841215
BELT-SERPENTINE
C18, CX35-P800
C18, CX35-P800
3167714
BELT-SERPENTINE
C18, CX35-P800
C18, CX35-P800
1974567
BELT-SERPENTINE
120H, 135H, 3126B, C15, C9, CX31-C15I, TH35-C15I
120H, 135H, 3126B, C15, C9, CX31-C15I, TH35-C15I
3748474
BELT-SERPENTINE
C15, C18
C15, C18
2193303
BELT-SERPENTINE
938G II, 950G II, 962G II, C7, CP-56, CP-64, CP-76, CS-56, CS-64, CS-74, D5K2 XL, IT38G II, IT62G II
938G II, 950G II, 962G II, C7, CP-56, CP-64, CP-76, CS-56, CS-64, CS-74, D5K2 XL, IT38G II, IT62G II
2115022
BELT-SERPENTINE
330C, 330C L, 330C MH, 584, C13, C7, C9, CX31-C9I, TH31-E61
330C, 330C L, 330C MH, 584, C13, C7, C9, CX31-C9I, TH31-E61
3748469
BELT-SERPENTINE
C13, CX31-C13I
C13, CX31-C13I
2881607
BELT-SERPENTINE
C13, CX31-C13I
C13, CX31-C13I
2728349
BELT TENSIONER
C7, C9, TH31-E61
C7, C9, TH31-E61
2715646
BELT TENSIONER
C7, C9, TH31-E61
C7, C9, TH31-E61