Hydraulic Power Supply Engine Package - Landoll 380 Operator's Manual

TROUBLESHOOTING GUIDE
PROBLEM
OVER HEATING OF OIL IN SYSTEM
FOAMING OF OIL
NOISY PUMP
LEAKY PUMP
CYLINDERS MOVE WITH CONTROL
VALVE IN NEUTRAL POSITION
CONTROL VALVE LEAKS
CYLINDER LEAKS
CYLINDERS DO NOT FUNCTION, OR
CREEP WITH PTO DISENGAGED
Hydraulic Power Supply Engine
Package
To troubleshoot the engine in the hydraulic engine
package, please refer to the owner's manual that was
provided with the engine package.
5-8
PROBABLE CAUSE
Oil passing through relief valve for
excessive time
Incorrect, low, dirty oil
Engine running too fast
Excessive component internal leakage
Restriction in filters or lines
Insufficient heat radiation
Malfunctioning component
Excess oil going to dock level circuit
Incorrect, low, or dirty oil
Water in oil
Air leaks
Low, incorrect, foamy oil
Suction line plugged
Pump damaged
Damaged or worn shaft seal
Loose or broken parts
Leaking cylinder seals or fittings
Control valve not centering when released
Valve damaged
Seals damaged or worn
Seals worn or damaged
Rod damaged
Barrel damaged
Leaking fittings or cylinder seals
Piloted check valve or O-ring leak
SOLUTION
Return control valve to neutral when not in
use
Use recommended oil (See Table 4-1). Fill
reservoir with clean oil. Replace filter.
Reduce engine speed.
Repair or replace component as
necessary.
Clean and/or replace filter or lines.
Clean dirt and mud from reservoir and
components.
Repair or replace
Adjust flow divider for 2.5 to 3.1 GPM flow.
Replace, clean or add oil as needed.
Replace oil
Check suction line and component seals
for suction leaks. Replace defective
parts.
Replace, clean, or add oil as needed.
Clean out obstruction or replace line.
Flush system, replace filter.
Repair or place
Replace seal and/or shaft and check for
misalignment.
Tighten or replace
Replace worn seals or fittings.
Check linkage for binding and repair
Repair or replace.
Replace.
Replace.
Replace.
Replace.
Tighten loose fittings.
Replace worn seals or fittings.
Replace defective component.
F-618-0911 Edition