- Off-Highway Truck/Tractor
- 797F (S/N: LAJ1-653; WSP1-129)
Description Of Change: The steering lines group is improved on the machines listed above. The improved steering lines group has a new tube assembly with increased line size and wall thickness.
The new tube assembly will improve the flow rate in the steering lines group and has increased service life.
Adaptable To:
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| Illustration 1 | g06396467 |
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Typical view of steering lines group (1) | |
| Required Parts | ||||
|---|---|---|---|---|
| Item | Qty | New Part Number | Part Name | Former Part Number (1) |
| 1 | 1 | Tube As | ||
| (1) | The former part number listed is for reference only and may differ. |
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.
Steering Lines Group Rework Procedure
Safety
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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 hydraulic oil under high pressure can remain in the components of the hydraulic system or the power train system after the engine has been stopped. The uncontrolled release of the hydraulic oil can cause sudden machine movement and can also result in the following conditions:
If hydraulic oil penetrates body tissue, the injury must be treated immediately by a doctor who is familiar with this type of injury. Use a board or a piece of cardboard to check for a hydraulic oil leak. Make sure that all of the attachments have been lowered to the ground and that all trapped pressure has been released from the hydraulic system and the power train system. Also, make sure that the hydraulic oil is cool before the removal of any components or lines. Remove the hydraulic oil filler cap only when the engine is stopped and the filler cap is cool enough to touch with your bare hand. |
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Sudden movement or accidental starting of the machine can cause personal injury or death to persons on or near the machine. To prevent personal injury or death, perform the following: Park the machine on a smooth, level surface. Lower the work tool to the ground and engage the parking brake. Stop the engine and remove the key. Block the wheels and install the steering frame lock. |
| NOTICE |
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Do not reuse O-ring seals. Replace with Cat® approved replacement O-ring seals. Apply clean lubricant to the new O-ring seals. Ensure that the O-ring seals are seated correctly. Use caution not to damage the O-ring seals during the tightening procedure. |
| NOTICE |
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Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids. Refer to Special Publication, PERJ1017, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat® products. Dispose of all fluids according to local regulations and mandates. |
Required Parts
| Required Parts | |||
|---|---|---|---|
| Item | Qty | Part Number | Part Name |
| 1 | 1 | Tube As | |
| 2 | 1 | Reducer | |
| 3 | 1 | O-Ring Seal | |
| 4 | 1 | O-Ring Seal | |
| 5 | 1 | Adapter | |
| 6 | 1 | O-Ring Seal | |
| 7 | 1 | Tee | |
| 8 | 2 | O-Ring Seal | |
| 9 | 1 | O-Ring Seal | |
Procedure
- Remove dust cap (J), fitting (K), O-Ring seal (L), O-Ring seal (N), and elbow (M) from steering lines group. Discard O-ring seal (N) and retain all other parts.
- Remove and discard tube assembly (A), nut (D), O-Ring seal (C), reducer (B), and O-Ring seal (E).
- Remove and discard O-Ring tee (F), O-Ring seal (G), and O-Ring seal (H). Refer to Illustration 2.
Show/hide table
Illustration 3 g06397588 (J) 6V-0852 Dust Cap
(K)6V-3965 Fitting (TEST)
(L)214-7568 O-Ring Seal
(M)6V-8076 Elbow
(1)566-2621 Tube As
(2)6V-8936 Reducer
(3)228-7089 O-Ring Seal
(4)228-7090 O-Ring Seal
(5)8T-2353 Adapter
(6)214-7566 O-Ring Seal
(7)126-6872 Tee
(8)214-7568 O-Ring Seal
(9)228-7089 O-Ring Seal - Install reducer (2) along with O-Ring seal (3) and O-Ring seal (4) to the steering lines group.
- Install adapter (5) along with O-Ring seal (6) to the steering lines group as shown in Illustration 3.
- Install tee (7) along with O-Ring seal (8), and O-Ring seal (9) to adapter (5) as shown in Illustration 3.
- Connect one end of tube assembly (1) to reducer (2) and another end of tube assembly (1) to tee (7) as shown in Illustration 3.
- Install elbow (M) that was saved in Step 1 along with O-Ring seal (8) to tee (7). Refer to Illustration 3.
- Install dust cap (J), fitting (K), and O-Ring seal (L) that were saved in Step 1 to tee (7). Refer to Illustration 3.
- Once all installations are verified to be correct, the machine can be returned to service.
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| Illustration 2 | g06397527 |
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(A) (B) (C) (D) (E) (F) (G) (H) (J) (K) (L) (M) (N) | |
