5-46 673831-Rev A
HYDROSTATIC POWER TRAIN
5
13. Remove O-rings and backup rings from 4WD
solenoid valve (18).
14. Remove two check valves (21) from valve block (17).
15. Remove O-rings and backup ring from check valves
(21).
16. Remove gauge port plugs (23) and hollow plug (22)
from valve block (17).
17. Remove O-rings from plugs (22 and 23).
18. Clean all parts using clean solvent and dry using
compressed air.
19. Inspect all parts for wear or damage. Replace parts
as needed.
Assembly Notes
• Assemble the 4WD valve by reversing the order of
disassembly.
• Lubricate all O-rings prior to assembly.
• Torque 4WD solenoid valve (18) to 40 lb-ft (54 N·m).
• Torque coil nut (20) to 3 lb-ft (4.1 N·m).
• Torque check valves (21) to 40 lb-ft (54 N·m).
• Torque hollow plug (22) to 12 lb-ft (16 N·m).
• Torque gauge port plugs (23) to 17 lb-ft (23 N·m).
• It is important that all component parts are
absolutely clean, as contamination can result
in serious damage and/or improper operation.
• Never use shop towels or rags to dry parts
after cleaning, as lint may clog passages. Dry
parts using compressed air.
• It is important that all component parts are
absolutely clean, as contamination can result
in serious damage and/or improper operation.
• Never use shop towels or rags to dry parts
after cleaning, as lint may clog passages. Dry
parts using compressed air.
Required Materials
• Seal Kit, Check Valve (Jacobsen PN 4141785) (2)
• Seal Kit, Solenoid Valve (Jacobsen PN TBD)
• O-Rings (Jacobsen PN 339897) (3)
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