Oshkosh JLG 400S, Service And Maintenance Manual

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SECTION 5 - HYDRAULICS
3120895 – JLG Lift – 5-19
3. Remove end cap.
4. Remove seal from end cap.
5. Remove gerotor.
6. Remove seal from gerotor.
7. Remove driver spacer if applicable.
8. Remove drive.
9. Remove spacer plate.
10. Remove seal from housing.
11. Remove output shaft from housing.
12. Remove needle thrust bearing from shaft or hous-
ing.
13. Reposition motor in vise. Clamp across ports as
shown. Do not clamp on side of housing. Excessive
clamping pressure on side of housing causes distor-
tion.
14. Remove cap screws from mounting flange. These
screws are assembled with Loctite to hold them in
place.
The screws will require 300- 400 in-lbs (11 Nm) of
torque to break loose and 100 in-lbs to remove. Do
not use impact wrench on Loctite screws. This could
result in rounded heads or broken sockets.
NOTE: If torque higher than given above is required to break
screws loose, apply heat according to following
instructions:
When heated, Loctite partially melts. This reduces torque
required to remove screw. Use small propane torch to
heat small area of housing where screws enters. Be care-
ful not to overheat housing and damage motor. Gradually
apply torque to screw with socket wrench as heat is
applied for 8 to 10 seconds. Continue turning screw until it
is completely removed.
15. Carefully remove flange from housing.