Poweramp LMP SERIES MECHANICAL 4.2009 - Manual (Page 30)

TROUBLESHOOTING
28 4111-0013 — Aug. 2007
Dec. 2008
Symptom Possible Cause Solution
Platform rises to full
height, but lip does not
fully extend. Lip assist chain
disconnected or broken. Connect or replace chain.
Insufficient main spring
tension. Increase tension on main lift springs. (See Adjust Lift
Arm Spring and Lip Assist Spring Tension in the
Adjustments section.)
Insufficient lip assist force. Increase lip assist spring tension. (See Adjust Lift
Arm Spring and Lip Assist Spring Tension in the
Adjustments section.)
Platform does not lower
when operator walks out
onto the platform. Excessive main spring
tension. Reduce main spring tension. (See Adjust Lift Arm
Spring and Lip Assist Spring Tension in the
Adjustments section.)
Damaged or worn
hold-down mechanism. Clean and inspect hold-down mechanism.
Lip folds too fast during
normal walk-down. Insufficient lip assist force. Increase lip assist spring tension. (See Adjust Lift
Arm Spring and Lip Assist Spring Tension in the
Adjustments section.)
Disconnected, worn, or
broken shock absorber. Inspect shock absorber. Connect or replace shock
absorber.
Platform does not stay
down. Entangled release chain. Remove cause of entanglement.
Dirt impacted in ratchet bar
teeth. Clean and inspect ratchet bar and ratchet pawl
teeth. DO NOT lubricate the ratchet assembly.
Broken or damaged ratchet
assembly teeth. Replace ratchet assembly. DO NOT lubricate the
ratchet assembly.
Disconnected or broken
hold-down pivot pins. Replace hold-down pivot pins.
Damaged or worn
hold-down mechanism. Clean and inspect hold-down mechanism.
Lip does not fold after
truck departs. Lip hinge binding because
of lack of lubrication Spray lithium grease into all of the lip lug area. (See
Periodic Maintenance in the Maintenance section.)
Excessive lip assist force. Decrease lip assist spring tension. (See Adjust Lift
Arm Spring and Lip Assist Spring Tension in the
Adjustments section.)