Loading ...
Loading ...
Loading ...
TROUBLESHOOTING
TROUBLESHOOTING
PROBLEM POSSIBLE CAUSE SOLUTION
1.
Noisy pump caused by a. Oil too heavy a. Change to proper viscosity.
cavitation
b. Oil filter plugged
b. Replace filter.
c. Suction line plugged or too c. Clean line and check for size.
small
2.
Oil heating a. Oil supply low a. Fill reservoir.
b. Contaminated oil
b.
Drain reservoir, change filter
and refill with clean oil.
c. Setting of relief valve too high c. Set
to
correct pressure.
d. Oil in system too light
d.
Drain reservoir and refill with
or too low
proper viscosity oil.
e. Pump operating too fast e. Do not exceed
540
rpm PTO
speed.
3.
Shaft seal leakage a. Worn shaft seal a. Replace shaft seal.
b. Broken diaphragm seal or
b,
c
&
d.
If
replacing the shaft
back
-
up gasket seal does not stop leakage,
the pump should be
disassembled and checked
for items b, c
&
d.
c.
Bearings out of position
d.
Excessive internal wear
4.
Foaming oil a.
Low
oil level a. Fill reservoir.
b.
Air leaking into.suction line
b.
Tighten fittings.
c. Wrong kind of oil
c. Drain and
fill
reservoir with
non
-
foaming oil.
d.
Moisture in oil
d.
Kee oil temperature below
180
F and continue to
operate as
oil
dries out, or
replace
oil
and purge system
if
foaming is excessive.
5.
Boom drops as dipperstick or a. Check valve leaking
a
Clean or replace check valve
E
bucket cylinder lever is assembly.
activated while boom control
is in raised position
34
Loading ...
Loading ...
Loading ...