Air Conditioning Tubes May Leak on Certain 140M, 14L, and 160 Motor Graders {1808} Caterpillar

Motor Grader

140M (S/N: B9G1-UP; D9G1-UP)

14L (S/N: B941-UP)

160M (S/N: B9E1-UP; B9L1-UP; B9T183-UP; D9T1-UP)

Introduction

The problem that is identified below does have a known permanent solution. Use the solution that is identified below.

Problem

Air Conditioning tubes on certain machines are rubbing and wearing causing leakage and failure.

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.

Personal Protective Equipment (PPE)

Proper PPE is required for this procedure including, but not limited to:

• Safety glasses

• Face mask/respirator

Required Parts

Procedure

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Illustration 1	g06359355

1. Remove existing Air Conditioning tubes and hardware.

2. Cut bulk insulation down one side.
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   Illustration 2	g06359359

3. Use insulation (3). Wrap the insulation around the tube (1), overlapping the insulation covering the second and third bends from the bottom of tube (1). Use two cable straps (9) to secure to the tube.

   Note: Warning the insulation is made of fiber glass and should only be handled with proper PPE.

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   Illustration 3	g06359364

   Note: Warning the insulation is made of fiber glass and should only be handled with proper PPE.

4. Use insulation (4). Wrap the insulation around the tube (2), overlapping the insulation covering the second bend from the bottom of tube (2). Use two cable straps (9) to secure to the tube.
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   Illustration 4	g06359380

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   Illustration 5	g06359382

5. Install tubes in the original location using new hardware.