0312937 JOHNSON WASHER, Solenoid plunger

March 12, 2001
(Revised July 2001)
U-55
S-22
H-17
O-40
Safety THE RADIATOR FAN MOTOR CIRCUITBREAKER NEEDS REPLACED ON CERTAIN 3516B ENGINES
4491 PI10050
This Program must be administered assoon as possible. When reporting the repair, use "PI10050" as the Partnumber and "7751" as the Group Number, "56" as the Warranty Claim DescriptionCode and "T" as the SIMS Description Code. Exception: If the repair isdone after failure, use "PI10050" as the Part Number, "7751" as the GroupNumber, "96" as the Warranty Claim Description Code, and "Z" as the SIMSDescription Code. This Revised Service Letter replacesthe March 12, 2001 (Revised April 2001) Service Letter. Changes have beenmade to the Affected Product.PROBLEM
A potentially hazardous condition, such as anexplosion, has been identified with certain power modules. The radiatorfan motor circuit breaker, which is installed to protect the 480 volt,three phase power leads to the radiator fan motor, may be damaged whileinterrupting a direct short fault current. It is possible that this conditioncould produce a severe electrical hazard and can result in severe personalinjury.AFFECTED PRODUCT
Model Identification Number3516B 1NW131, 1327RN939, 1089, 1091, 1118, 1128-1130, 1160,1166, 1167,
1169, 1171-1174, 1176-1184, 1186-1190, 1192,1194,
1195, 1197-1199, 1201-1203, 1205, 1209-1214,1216,
1219, 1220, 1223-1226, 1228, 1231, 1233, 1235-1239,
1241, 1242, 1244-1246, 1248-1253, 1258-1261,1278,
1280, 1282, 1284, 1286-1288, 1290, 1293, 1298,1299,
1306, 1310, 1311, 1316, 1317, 1319, 1325,1327,
1328, 1342, 1385, 1386, 1390-1392, 1397, 1400,1403,
1405, 1407, 1413-1421, 1423, 1426, 1428, 1429,1431-
1433, 1442, 1443, 1452, 1453, 1456-1460, 1463PARTS NEEDED
1 ? 2029033 - Breaker4 - #10 half round head screws 3 ½ incheslongACTION REQUIRED
See the attached Rework Procedure.OWNER NOTIFICATION
U.S. and Canadian owners will receive the attachedOwner Notification.SERVICE CLAIM ALLOWANCES
Caterpillar Dealer Suggested Customer Suggested
Parts Labor Hrs. Parts Labor Hrs. Parts Labor Hrs.
100% 2 0 0 0 0
This is a 2.0- hour job. U.S. and Canadian Dealers Only - Eligibledealers may enter a Type 2 SIMS ReportPARTS DISPOSITION
Handle the parts in accordance with your WarrantyBulletin on warranty parts handling.MAKE EVERY EFFORT TO COMPLETE THIS PROGRAMAS SOON AS POSSIBLE.Attach. (1-Owner Notification)
(2-Rework Procedure)COPY OF OWNER NOTIFICATION FOR U.S. AND CANADIAN OWNERS
XYZ Corporation
3240 Arrow Drive
Anywhere, YZ 99999Safety - THE RADIATOR FAN MOTOR CIRCUIT BREAKERNEEDS REPLACEDMODELS INVOLVED - CERTAIN 3516B ENGINESDear Caterpillar Product Owner:New radiator fan motor circuit breakers needto be installed on the products listed below. The radiator fan motor circuitbreaker, which is installed to protect the 480 volt, three phase powerleads to the radiator fan motor, may be damaged while interrupting a directshort fault current. It is possible that this condition could produce asevere electrical hazard, such as an explosion. Results from this conditioncould be severe personal injury. You will not be charged for the serviceperformed.Contact your local Caterpillar dealer immediatelyto schedule this service. The dealer will advise you of the time requiredto complete this service. Please refer the dealer to their Service Letterdated March 12, 2001 when scheduling this service.We regret the inconvenience this may causeyou, but urge you to have this service performed for your added safetyand satisfaction.
Caterpillar Inc.
Identification #(s)Attached to March 12, 2001 Service Letter
Rework Procedure
Turn off all power. Prevent the engine from startingand lock out the equipment before working on or inside the equipment.
NOTE: This equipment must be servicedby qualified electrical personnel only.NOTE: Always use a properly rated voltagesensing device to confirm power is off.
The 1912307 Radiator Fan Motor Circuit Breakermust be replaced with a new 2029033 Breaker.
Locate the existing circuit breaker. It is installedeither in the wall mounted radiator fan motor control panel, or insidethe utility cubicle in units equipped with the floor standing utility switchgear.
Loosen the breaker cable lug screws on both topand bottom lugs.
Remove two (2) mounting screws that secure thebreaker to the back plate, and detach the breaker.
The new breaker is sm