Improved Routing for Breather Pipe Is Now Used on Certain Wheel Feller Bunchers and Wheel Skidders {1317} Caterpillar

Wheel Feller Buncher

2570C (S/N: W571-121)

2670C (S/N: W671-140)

563C (S/N: W631-267)

573C (S/N: W731-205)

Wheel Skidder

525D (S/N: GKP1-439)

535D (S/N: MTP1-368)

545D (S/N: KGP1-241)

555D (S/N: PGY1-146)

Description Of Change: Improved breather pipe routing is now used on the machines listed above. The new breather pipe routing will increase the service life of the component.

Adaptable To: The following changes are adaptable to the products within the listed serial numbers, and are effective with all products after the listed serial numbers.

Rework Procedure

Park the machine on level ground and lower all the attachments to the ground. Allow the machine to cool down before continuing as the engine components may still be hot.

Follow all safety precautions in the Operation and Maintenance Manual and Service Manual when performing this inspection.

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Illustration 1	g06224049
Wheel Skidders (1) 356-1116 Breather Pipe

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Illustration 2	g06224050
Wheel Feller Bunchers (1) 356-1116 Breather Pipe

1. Inspect the 356-1116 Breather Pipe (1) routing to ensure no contact with the engine harness. Refer to Illustration 1 for Wheel Skidders and refer to Illustration 2 for Wheel Feller Bunchers.

   Note: P-clip orientation should be as shown in Illustration 1 and/or Illustration 2 and the harness must be routed below the breather hose (1).

2. If the hose is in contact with the harness, route to ensure that contact is no longer present.