Poweramp POWERHOLD 4.2009 - Manual (Page 33)

Symptom Possible Cause Solution
Restraint does not fully
raise or motor
overcurrent device
and/or overload device
continuously tripping. Low hydraulic fluid. Add fluid, see Maintenance section for proper fluid
level and type.
Debris in Tank Drain and clean tank. I debris cannot be cleaned out
replace tank.
Restraint does not raise. Solenoid Not energized. Locate solenoid (See Page 40 & 41).
Coil must be energized when P-Hold is in engage
mode.
-Check valve for Magnetism at the coil
Bad Spool Valve Remove coil from cartridge valve and cartridge valve
from valve block.
-Check valve for contaminant's and/or damage.
-Replace valve if damaged.
-Carefully wipe valve with clean rag (do not damage
“O” rings on valve).
NOTE: Do not over tighten valve into block. Max Torque:
10-15 lb/ft. or snug to prevent leakage. Tighten coil snug,
avoid over tightening and causing valve to bind.
Operate unit. Replace valve if problem persists and
all other troubleshooting procedures performed.
Restraint does not raise
but leveler raises.
(combination unit only) Solenoid Not energized. Locate solenoid (See Page 39).
Coil Must be energized when P-Hold is in engage
mode.
-Check valve for Magnetism at the coil.
Bad Spool Valve Remove coil from cartridge valve and cartridge valve
from valve block.
-Check valve for contaminant's and/or damage.
-Replace valve if damaged.
-Carefully wipe valve with clean rag (do not damage
“O” rings on valve).
NOTE: Do not over tighten valve into block. Max Torque:
10-15 lb/ft. or snug to prevent leakage. Tighten coil snug,
avoid over tightening and causing valve to bind.
Operate unit. Replace valve if problem persists and
all other troubleshooting procedures performed.
TROUBLE SHOOTING POWERHOLD
4111-0016 — November, 2008 31