Oil Cooler Core Assembly May Get Damaged During Hammer Applications on Certain 349 and 352 Excavators {1374} Caterpillar

Oil Cooler Core Assembly May Get Damaged During Hammer Applications on Certain 349 and 352 Excavators {1374} [M0123831]

COOLING SYSTEM

COOLER GP

Oil Cooler Core Assembly May Get Damaged During Hammer Applications on Certain 349 and 352 Excavators {1374}

1.1. Introduction

2.1. Problem

3.1. Solution

Excavator
349 (S/N: LKG1-UP; RYG1-UP; DYS1-UP; RBY1-UP)
352 (S/N: SZH1-UP; REK1-UP; HDL1-UP; MGR1-UP; ERW1-UP; KZY1-UP; DYZ1-UP)

Reference: Combined Manual, UENR0471, "Hydraulic Hammer - Install"

Introduction

The problem that is identified below does not have a known permanent solution. Until a permanent solution is known, use the solution that is identified below.

Problem

Reports have been received that 541-1387 Oil Cooler Core As may get damaged during hammer applications on the machines listed above. If the existing oil cooler core assembly fails, hydraulic oil can spill and cause personal injury. The machine may also shut down and oil may spill and contaminate the soil.

Solution

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Do not operate or work on this product unless you have read and understood the instruction and warnings in the relevant Operation and Maintenance Manuals and relevant service literature. Failure to follow the instructions or heed the warnings could result in injury or death. Proper care is your responsibility.

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Hot oil and components can cause personal injury.

Do not allow hot oil or components to contact skin.

In order to prevent the damage to the oil cooler core assembly during hammer applications, maximum back pressure from the return line must be restricted within 1000 kPa (145 psi).

Refer to UENR0471, for more information on the hammer mounting procedure.