3772350 CONTROL AR-VARIABLE-SPEED FAN Caterpillar parts
345D L, 349D L
Rating:
Alternative (cross code) number:
CA3772350
377-2350
3772350
CA3772350
377-2350
3772350
EXCAVATOR,
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Information:
Probable Causes
Engine duty cycle
DEF injector
Exhaust system insulation
Incorrect Selective Catalytic Reduction (SCR) inlet temperatureRecommended Actions
Note: The procedures have been listed in order of probability. Complete the procedures in order.
Illustration 1 g03861965
Typical example of "Total Time vs Engine Speed and Engine Load Factor" table from the "Product Status Report"
Table 1
Troubleshooting Test Steps Values Results
1. Download the "Product Status Report" Using the Electronic Service Tool.
A. Connect the electronic service tool to the engine ECM.
B. Down load the "Product Status Report".
C. Record the configured low idle speed.
D. Refer to Illustration 1. Calculate the percentage of time that the engine has operated in area (1).
Product status report
The engine has operated for too long at low speed or low load if one of the following statements is true:
The configured idle speed is between 800 rpm and 990 rpm and the time spent in area (1) is greater than 15 percent
The configured idle speed is between 1000 rpm and 1200 rpm and the time spent in area (1) is greater than 45 percent
The configured idle speed is between 1000 rpm and 1200 rpm and the time spent in area (1) excluding the 1000 rpm to 1400 rpm area is greater than 15 percent
Result : The engine has operated for too long at low speed or low load.
Repair: Refer to Illustration 1. Operate the engine in Area (2) for 10 hours. Operating the engine in this range will increase exhaust temperatures and remove DEF deposits. Check the exhaust system for deposits again after 10 hours. In order to avoid reoccurrence of this fault, avoid operating the engine for extensive periods in low idle or low load conditions.
Result : The engine has not operated for too long at low speed or low load.
Proceed to Test Step 2.
2. Check for a Leaking DEF Injector
A. Perform the DEF dosing system accuracy test. Refer to Systems Operation, Testing and Adjusting, "Aftertreatment SCR System Dosing Test" for the correct procedure.
DEF Dosing
Result: The quantity of DEF collected is not within the acceptable range.
Repair: Replace the DEF injector. Refer to Disassembly and Assembly, "DEF Injector and Mounting - Remove and Install"
Result: The quantity of DEF collected is within the expected range.
Proceed to Test Step 3.
3. Exhaust System Insulation
A. Check the insulation on the exhaust system for damage, degradation, or missing insulation.
Exhaust System Insulation
Result : The exhaust system insulation is missing, damaged, or degraded.
Repair: Repair or replace the exhaust system insulation.
Result : The exhaust system insulation is OK.
Proceed to Test Step 4.
4. SCR Inlet Temperature
A. Start the engine. Operate the engine at full load and operating speed.
B. Use the electronic service tool to monitor the SCR inlet temperature.
250° C (482° F)
Result: The SCR inlet temperature does not rise above 250° C (482° F).
Repair: Refer to Troubleshooting, "SCR Catalyst Has Incorrect Inlet Temperature".
Result: The SCR inlet temperature rises above 250° C (482° F).
Contact the Dealer Solutions Network (DSN).
Engine duty cycle
DEF injector
Exhaust system insulation
Incorrect Selective Catalytic Reduction (SCR) inlet temperatureRecommended Actions
Note: The procedures have been listed in order of probability. Complete the procedures in order.
Illustration 1 g03861965
Typical example of "Total Time vs Engine Speed and Engine Load Factor" table from the "Product Status Report"
Table 1
Troubleshooting Test Steps Values Results
1. Download the "Product Status Report" Using the Electronic Service Tool.
A. Connect the electronic service tool to the engine ECM.
B. Down load the "Product Status Report".
C. Record the configured low idle speed.
D. Refer to Illustration 1. Calculate the percentage of time that the engine has operated in area (1).
Product status report
The engine has operated for too long at low speed or low load if one of the following statements is true:
The configured idle speed is between 800 rpm and 990 rpm and the time spent in area (1) is greater than 15 percent
The configured idle speed is between 1000 rpm and 1200 rpm and the time spent in area (1) is greater than 45 percent
The configured idle speed is between 1000 rpm and 1200 rpm and the time spent in area (1) excluding the 1000 rpm to 1400 rpm area is greater than 15 percent
Result : The engine has operated for too long at low speed or low load.
Repair: Refer to Illustration 1. Operate the engine in Area (2) for 10 hours. Operating the engine in this range will increase exhaust temperatures and remove DEF deposits. Check the exhaust system for deposits again after 10 hours. In order to avoid reoccurrence of this fault, avoid operating the engine for extensive periods in low idle or low load conditions.
Result : The engine has not operated for too long at low speed or low load.
Proceed to Test Step 2.
2. Check for a Leaking DEF Injector
A. Perform the DEF dosing system accuracy test. Refer to Systems Operation, Testing and Adjusting, "Aftertreatment SCR System Dosing Test" for the correct procedure.
DEF Dosing
Result: The quantity of DEF collected is not within the acceptable range.
Repair: Replace the DEF injector. Refer to Disassembly and Assembly, "DEF Injector and Mounting - Remove and Install"
Result: The quantity of DEF collected is within the expected range.
Proceed to Test Step 3.
3. Exhaust System Insulation
A. Check the insulation on the exhaust system for damage, degradation, or missing insulation.
Exhaust System Insulation
Result : The exhaust system insulation is missing, damaged, or degraded.
Repair: Repair or replace the exhaust system insulation.
Result : The exhaust system insulation is OK.
Proceed to Test Step 4.
4. SCR Inlet Temperature
A. Start the engine. Operate the engine at full load and operating speed.
B. Use the electronic service tool to monitor the SCR inlet temperature.
250° C (482° F)
Result: The SCR inlet temperature does not rise above 250° C (482° F).
Repair: Refer to Troubleshooting, "SCR Catalyst Has Incorrect Inlet Temperature".
Result: The SCR inlet temperature rises above 250° C (482° F).
Contact the Dealer Solutions Network (DSN).
Caterpillar SIS machinery equipment:
Caterpillar SIS
345D L Excavator EEH00001-UP (MACHINE) POWERED BY C13 Engine »
377-2350
CONTROL AR-VARIABLE-SPEED FAN
349D L Excavators JGB00001-UP (MACHINE) POWERED BY C13 Engine »
377-2350
CONTROL AR-VARIABLE-SPEED FAN
349D L Excavator RBJ00001-UP (MACHINE) POWERED BY C13 Engine »
377-2350
CONTROL AR-VARIABLE-SPEED FAN
Parts control Caterpillar catalog:
2970535
CONTROL GP-JOYSTICK
311D LRR, 311F LRR, 312D, 312D L, 312D2, 314D LCR, 315D L, 318D2 L, 319D L, 319D LN, 320D, 320D FM, 320D FM RR, 320D L, 320D LRR, 320D RR, 320D2 L, 321D LCR, 323D L, 324D, 324D FM, 324D FM LL, 324D L,...
311D LRR, 311F LRR, 312D, 312D L, 312D2, 314D LCR, 315D L, 318D2 L, 319D L, 319D LN, 320D, 320D FM, 320D FM RR, 320D L, 320D LRR, 320D RR, 320D2 L, 321D LCR, 323D L, 324D, 324D FM, 324D FM LL, 324D L,...
1709497
CONTROL GP-PILOT OPERATED HYD
307C, 308C, 311C, 311D LRR, 311F LRR, 312C, 312C L, 312D, 312D L, 312D2, 312D2 GC, 312D2 L, 312E, 312E L, 313D, 313D2, 313D2 LGP, 314C, 314D CR, 314D LCR, 314E CR, 314E LCR, 315C, 315D L, 316E L, 318C...
307C, 308C, 311C, 311D LRR, 311F LRR, 312C, 312C L, 312D, 312D L, 312D2, 312D2 GC, 312D2 L, 312E, 312E L, 313D, 313D2, 313D2 LGP, 314C, 314D CR, 314D LCR, 314E CR, 314E LCR, 315C, 315D L, 316E L, 318C...
2495278
CONTROL & MTG GP-ENGINE ELEK
345C, 345C L, 345C MH, 345D, 345D L, 345D L VG, 349D, 349D L, W345C MH
345C, 345C L, 345C MH, 345D, 345D L, 345D L VG, 349D, 349D L, W345C MH
2941275
CONTROL AR-VARIABLE-SPEED FAN
345D, 345D L, 345D L VG, 349D, 349D L
345D, 345D L, 345D L VG, 349D, 349D L
311D LRR, 311F LRR, 312D, 312D L, 312D2, 314D LCR, 315D L, 318D2 L, 319D L, 319D LN, 320D, 320D FM, 320D FM RR, 320D L, 320D LRR, 320D RR, 320D2 L, 321D LCR, 323D L, 324D, 324D FM, 324D FM LL, 324D L,...
2555843
CONTROL AR-AUXILIARY
311D LRR, 312D, 312D L, 312D2, 314D LCR, 315D L, 318D2 L, 319D L, 319D LN, 320D, 320D L, 320D LRR, 320D RR, 320D2 L, 321D LCR, 323D L, 324D, 324D L, 325D, 325D L, 328D LCR, 329D, 329D L, 330D L, 336D ...
311D LRR, 312D, 312D L, 312D2, 314D LCR, 315D L, 318D2 L, 319D L, 319D LN, 320D, 320D L, 320D LRR, 320D RR, 320D2 L, 321D LCR, 323D L, 324D, 324D L, 325D, 325D L, 328D LCR, 329D, 329D L, 330D L, 336D ...
345C, 345C L, 345C MH, 345D, 345D L, 345D L VG, 349D, 349D L, 651B, 657E, 657G, 770, 772, 950H, 962H, AP-755, C7, C9, IT62H, PM-200, PM-201, W345C MH
307D, 308D, 311D LRR, 312D, 312D L, 312D2, 312D2 GC, 312D2 L, 313D, 313D2, 313D2 LGP, 314D CR, 314D LCR, 315D L, 318D L, 318D2 L, 319D L, 319D LN, 320D, 320D FM, 320D GC, 320D L, 320D LN, 320D LRR, 32...
2457832
CONTROL AS
307D, 311D LRR, 311F LRR, 312D, 312D L, 312D2, 312D2 GC, 312D2 L, 313D, 313D2, 313D2 LGP, 315D L, 318D L, 318D2 L, 319D, 319D L, 319D LN, 320D, 320D FM, 320D FM RR, 320D GC, 320D L, 320D LN, 320D LRR,...
307D, 311D LRR, 311F LRR, 312D, 312D L, 312D2, 312D2 GC, 312D2 L, 313D, 313D2, 313D2 LGP, 315D L, 318D L, 318D2 L, 319D, 319D L, 319D LN, 320D, 320D FM, 320D FM RR, 320D GC, 320D L, 320D LN, 320D LRR,...
8W6335
CONTROL GP-POWER TRAIN
143H, 163H NA
143H, 163H NA
2813159
CONTROL GP-TRANSMISSION HYD
120H, 12H, 135H, 140H, 160H
120H, 12H, 135H, 140H, 160H
2399403
CONTROL AR-RIDE
416D, 420D, 428D, 430D, 432D, 442D
416D, 420D, 428D, 430D, 432D, 442D
2399400
CONTROL AR-RIDE
416D, 420D, 424D, 428D, 430D, 432D, 442D
416D, 420D, 424D, 428D, 430D, 432D, 442D
2399405
CONTROL AR-RIDE
420D, 428D, 432D, 442D
420D, 428D, 432D, 442D
3492022
CONTROL AR-AUXILIARY
316E L, 318E L
316E L, 318E L
3225536
CONTROL GP-OPERATOR
D7E, D7E LGP
D7E, D7E LGP
2723357
CONTROL GP-ENGINE ELECTRONIC
793F, 793F-XQ, C175-16, C175-20
793F, 793F-XQ, C175-16, C175-20
3492019
CONTROL AR-AUXILIARY
316E L, 318E L
316E L, 318E L