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 TM 55-1905-220-14-7
3-197. MAST HYDRAULIC RAM - MAINTENANCE INSTRUCTIONS (Continued).
LOCATION
ITEM
ACTION
REMARKS
INSTALLATION (Cont)
4955-145
ADJUSTMENT
4.
a.
Operate cylinder a few times with reduced load and pressure.
Hydraulic cylinders may be erratic due to trapped air, but will
normally purge them- selves after several cycles. If not, loosen
a fitting near cylinder until all air is removed.
b.
Cushion adjustments - Loosen locknut and hold with wrench
while turning screw.
1. To increase cushion - turn screw clockwise.
2. To reduce cushion - turn screw counter-clockwise.
NOTE
Full OPEN to full CLOSED is two full turns of the screw. Final
position of screw should be a balance between any shock or
bounce at the start of the cushion and the final impact of the
piston at the end of the stroke.
Change 2 3-3151
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