The Steering Lines Group is Improved on Certain 797 Off-Highway Trucks {4304} Caterpillar

Off-Highway Truck/Tractor

797B (S/N: JSM1-488)

797F (S/N: LAJ1-658; LTZ1-145)

Description Of Change: The steering lines group is improved on the machines listed above. The steering lines group has new hose assemblies with thicker coupling stem and more robust sealing area and new clips to improve the service life of the steering lines group.

Adaptable To:

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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.

Improved steering lines group is adaptable to the machines within the listed serial numbers, and is effective in production with all the machines after the listed serial numbers.

Rework Procedure of 433-3793 Steering Lines Gp in 797F Off-Highway Trucks

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Illustration 1	g06343606
(A) 254-4006 Hose As (B) 5N-2840 Clip (C) 5P-4295 Clip (D) 479-2171 Bolt As (E) 8T-4121 Hard Washer (F) 344-5675 Nut

1. Remove hose assembly (A), clip (B), clip (C), bolt assembly (D), hard washer (E), and nut (F) as shown in Illustration 1. Discard hose assembly (A) and save the rest of the parts.
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   Illustration 2	g06343596
   (1) 561-7299 Hose As (2) 228-7092 O-Ring Seal (B) 5N-2840 Clip (C) 5P-4295 Clip (D) 479-2171 Bolt As (E) 8T-4121 Hard Washer (F) 344-5675 Nut (G) 281-5979 Elbow As

2. Re-orient elbow assembly (G). Install hose assembly (1), and two O-Ring seals (2) using clip (B), clip (C), bolt assembly (D), hard washer (E), and nut (F) that were saved in Step 1 of Section "Rework Procedure of 433-3793 Steering Lines Gp in 797F Off-Highway Trucks". Refer to Illustration 2.

Rework Procedure of 197-4018 Steering Lines Gp in 797B Off-Highway Trucks

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Illustration 3	g06343594
(A) 254-4006 Hose As (H) 6V-9004 Elbow (J) 6V-9007 Elbow

1. Remove hose assembly (A), elbow (H), and elbow (J). Discard hose assembly (A) and save the rest of the parts. Refer to Illustration 3.
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   Illustration 4	g06343592
   (1) 561-7299 Hose As (2) 228-7092 O-Ring Seal (3) 238-5082 O-Ring Seal (A) 254-4006 Hose As (H) 6V-9004 Elbow (J) 6V-9007 Elbow

2. Install hose assembly (1), two O-Ring seals (2), two O-Ring seals (3), elbow (H), and elbow (J) that were saved in Step 1 of Section "Rework Procedure of 197-4018 Steering Lines Gp in 797B Off-Highway Trucks". Refer to Illustration 4.