2011/08/18 Caterpillar

Engine:

3126B (S/N: 8YL1-UP)

C7 (S/N: KAL1-UP; SAP1-UP; JRT1-UP; WAX1-UP)

C9 (S/N: MTB1-UP; 9DG1-UP; CKP1-UP)

Truck Engines:

3126E (S/N: CKM1-UP; HEP1-UP)

C7 TRUCK ENGINE (S/N: LBM1-UP)

Description of Change: A new hose clamp is now used on the engines that are listed above. The new improved hose clamp seals the juncture between the coolant hose to the water pump more securely than the previous hose clamp.

Adaptable To: In the field, if the leaks are found at the juncture of the coolant hose and the water pump, use the new 347-3148 Band Clamp to replace the 237-5176 Band Clamp.

The new hose clamp is adaptable back to the first production of the engines that are listed above.