NUT-SPANNER 2295080 - Caterpillar

TECHNICAL INFORMATION BULLETIN August 13, 2003
Wheel Loader
Track-Type Tractors 950G II (AXR, AXX, AYB, AYL,
BAA)
953C (2ZN, BBX)
962G II (AXS, AXY, AYE, BAB,
BAC, BAD)
966G II (ANT, ANZ, AWY, AXJ)
972G II (ANY, AWP, AXC, AXN)
980G II (AWH, AXG)
D5M LGP (3CR, 3DR, 5FS, 6AS,
7LR)
D5M XL (4BR, 4JS, 5ES, 6GN)
D6M LGP (2RN, 4GS, 4JN, 5NR)
D6M XL (2YS, 3WN, 4HS, 5WR,
6LR, 9ZM)
D6R (1RW, 2HM, 2YN, 3ZN,
4FM, 5PR, 6FR, 6JN,
9ZS, AGM, BNL, BPS,
BRJ, CAD, DMP, FDT)
D6R II (AEM, AFM, BLE, BLT,
BMK)
D6R II LGP (ACJ, ADE, BNC)
D6R II XL (AAX, BMJ, BMY)
D6R II XW (AEP, DAE)
D6R LGP (4HN, 4TR, 6GR, 7AR,
8LN, 8TM, 9PN)
D6R XL (4JR, 4MN, 4WR, 5LN,
5RR, 6MR, 7GR, 9BM)
D6R XL II (BRZ)
D6R XR (6HR, 7DR, 7KN, 8XN,
9MN)
D7R (2EN, 2HR, 3ZR, 5MR,
BNM, BNX, BRP)
D7R II (ABJ, ACS, ADW, AEC,
AFG, AGN, BPT, BRM)
D8R (6YZ, 7XM, 9EM, AKA)
Component Code: 1929SUBJECT: Transmission and Torque Converter Temperature Sensor Replacement
PROBLEM:
Failures have been reported on the 118-7226 Temperature Sensor. Claim Reports show that the 118-7226 Temperature Sensor is sometimes being replaced because the transmission is running "HOT".
The 118-7226 Temperature Sensor is used to perform the following tasks:
Measure the transmission oil sump temperature
Make adjustments in the Power Train ECM in order to provide optimum transmission and torque converter operation
The output from the 118-7226 Temperature Sensor is not displayed on the Quad Gage Panel or any other panel. The output of the 118-7226 Temperature Sensor is used only to generate a fault code.
The "Torque Converter Out" gage on the Quad Gage receives its input from the 4W-9972 Temperature Sensor and the 145-7028 Temperature Sensor.
SOLUTION:
Based on this information, Caterpillar Electronics has concluded that there is some confusion with the operation of the 118-7226 Temperature Sensor. Attached is a form requesting additional information on repairs made for transmission oil temperature overheating. We are requesting this information on repairs made only until OCTOBER 31, 2003.
TO: CAT ELECTRONICS ? ATTENTION MACHINE PRODUCT ANALYST
FAX NUMBER: (309) 578-0260
Form for Additional Information Requested:
Serial Number:___________________________ Hours:_________________
Work Order Number:_______________________ Dealer Code:___________
Part Number: 118-7226
What was the original reason for the service call? (Example: customer complaint, alternator failure, etc.)
How did the technician determine that the machine had a temperature related problem? (warning light, diagnostic light, gage reading, machine performance, operator complaint, history of repairs, etc.)
What diagnostic codes were identified (MID, CID, FMI)? Were these codes Active or Logged? (occurrence count if available)
What test procedures and equipment were used to identify the problem? (temperature probe, Fluke meter, infrared gun, etc.)
What procedure step identified the fix? Did the procedure help you reach the conclusion? Did you use a paper copy of the manual or did you view the manual on SIS?
What additional parts were changed?
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ALL RIGHTS RESERVED