24
TROUBLE SHOOTING
PROBLEM POSSIBLE
CAUSE CORRECTION
Aeration of Hydraulic
Fluid (generally
indicated by foamy
appearance of fluid).
Low hydraulic fluid level.
Check and refill hydraulic
system to proper level.
Air leaking into suction side of
hydraulic pump.
Check for loose or defective
connections between
reservoir and hydraulic pump.
Hydraulic fluid foaming due to
improper hydraulic oil usage.
Refer to Tractor Operator’s
Manual and replace hydraulic
oil using recommended
hydraulic oil.
System relief valve
squeals.
Cold Hydraulic Fluid.
Allow hydraulic fluid to warm
up to operating temperature.
Excessive load in bucket. Weight
exceeds specified loader
capacity.
Reduce load.
Relief valve setting below
specifications.
Check and reset valve setting
as needed.
Hydraulic hose, tubeline or quick
disconnect coupler restriction.
Check for evidence of
restriction in hydraulic oil flow.
Repair or replace defective
components.
Cylinder Piston assembly
leakage.
Check cylinders for leakage.
Loader drops with
control valve spool in
“Centered” position (no
external oil leakage
evident.)
Note: A gradual drop
over an extended period
of time is a normal
condition.
Control valve internal leakage.
Replace control valve and
recheck.
Control valve spool(s)
will not return to
centered position.
Control lever linkage binding.
Determine origin of binding
and repair.
Control valve spool centering is
broken.
Replace centering spring.
Control valve spool binding in
valve body spool bore.
Disassemble valve for
inspection and repair.
1
6
Series, Model - 2
816
