H&S HI-DUMP 9215, Operator'S Manual

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TROUBLE SHOOTING
WARNING;
MAKE SURE THAT THE TRACTOR IS SHUT OFF AND THE TRAILER CAN NOT MOVE
BEFORE SERVICING THE HI-DUMP. MAINTENANCE AND REPAIR SERVICE WORK
MUST BE PERFORMED BY A QUALIFIED SERVICE PERSON ONLY.
SYMPTOM POSSIBLE CAUSE POSSIBLE REMEDY
Box will not
raise or lower
• No hydraulic power
• Lift/Dump cylinder
leaking
• Box overloaded
•
Insufficient
hydraulic
pressure
• Hydraulic circuit
crossed
• Connect hydraulic circuits to tractor properly
• Actuate proper hydraulic valve
• Check quick-couplers to be certain they are
completely engaged
• Replace clogged hydraulic filter in tractor
• Fill tractor hydraulic oil to proper level
• Repair or replace cylinder as needed
• Remove part of the load
• Use power unit capable of providing 2250 psi.
minimum pressure
• Replace worn hydraulic pump on tractor
• Trace hydraulic circuit and connect so front and rear
lift cylinders lift in series, & the dump cylinders are
plumbed in parallel
Box will not
dump properly
• Box dumped on side
hill
• Dump box on level surface
Box chatters
when raising or
lowering, or will
not raise to full
height
• Air in hydraulic
system
• Oil level low
• Insufficient reservoir
capacity
• Actuate lift/dump cylinders to fully extend and retract
to purge the system of air
• Add hydraulic oil to the towing vehicles
hydraulic system
• Change power unit to provide a minimum
reservoir capacity of 20.1 galIons
Box raises or
lowers slowly
• Not enough hydraulic
oil volume
•
• Lift/Dump cylinder is
leaking internally
• Box overloaded
• Use a power unit capable of providing 34.1 GPM
minimum
• Replace worn pump
• Replace clogged hydraulic filter in tractor
• Check for leaking fittings
• Repair or replace Lift/Dump cylinder as needed
• Remove part of the load