Poweramp EH SERIES HYDRAULIC 4.2009 - Manual (Page 36)

34 4111-0004 — November 2003
OCT.2007
TROUBLESHOOTING
Symptom Possible Cause Solution
Platform does not rise to
full height. Low hydraulic fluid. Add fluid as needed. See Periodic Maintenance in
the Maintenance section.
Lip does not stay
extended S1 Sequence Valve requires
adjustment 1/8” increments
clockwise at a time See Valve Adjustment Procedure Section
Platform DOES rise to
full height, but lip DOES
NOT extend or extend
fully. Low hydraulic fluid. Add fluid as needed. See Periodic Maintenance in
the Maintenance section.
S2 Sequence Valve 2
requires adjustment.1/8”
increments at a time See Valve Adjustment Procedure Section.
Lip does not extend. S2 Sequence Valve 2
requires adjustment 1/8”
increments at a time See Valve Adjustment Procedure Section.
Lip extends almost
immediately when the
RAISE button is pushed.
Platform rises after lip is
fully extended. S2 Sequence Valve 2
requires adjustment. See Valve Adjustment Procedure Section.
Platform locks into
“safety” as platform
lowers. Lip drops to
vertical position. Platform lowering speed is
too fast. NV1 Needle Valve
1 requires adjustment See Valve Adjustment Procedure Section.
Velocity fuse failed. Replace Velocity Fuse
Incorrect fluid. NOTE: Extreme cold weather OR incorrect fluid
may cause platform to lock. Adjustment is same.
If adjustments and velocity fuse replacement fail to
correct problem, fluid replacement may be required.