1900 SRM 964 Troubleshooting
PROBLEM POSSIBLE CAUSE PROCEDURE OR ACTION
The pump has low
output.
The pump is worn
.
Check, repair,
or install new parts as
required.
Oil in the hydr
aulic reservoir is low.
Fill reservoi
r to correct level. Check
for leaks.
Lift cylinder
has leaks.
Repair or repl
ace lift cylinder.
Restriction
in the inlet hose.
Remove restr
iction, clean screen, or
install new l
ine.
Inlet fittin
g or inlet hose clamp is
loose.
Tighten fitt
ing. Install new hoses.
Remove air fr
om system.
Seals or gas
kets are damaged and
cause leaks
.
Install new
seals or gaskets.
The fittin
gatthepumpleaks.
Tighten fi
ttings. Install new parts as
necessary
.
The pump has leaks. Fittings are loose or defective. Tighten fittings. Install new parts as
necessary.
Loose capscrews holding the pump
housing together.
Tighten capscrews to specified
torque.
Seals are defective. Install new seals or gaskets.
Lift pump and motor oper-
ates but the forks will not
raise. The button is in the
raise position.
Excessive load on forks. Reduce load.
Relief valve defective. Replace relief valve.
Relief valve pressure is incorrect. Adjust relief valve pressure.
Oil in the hydraulic reservoir is low. Fill reservoir to correct level. Check
for leaks.
Lower cartridge is defective. Check the valve cartridge for contam-
ination and damage. Replace car-
tridge.
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