Procedure for Lift Cylinder Internal Leakage Test
Disconnect and
plug this hose
1.
Shut off engine and engage parking brake.
ANY oil flow or droplets
from this fitting indicates
internal leak
CAUTION
Prevent personal injury and/or damage to equip-
ment. Read all WARNINGS, CAUTIONS, and Pre-
cautions for Hydraulic Testing at the beginning
of this section.
Pressure is applied
to this port
2.
Remove all pressure from cylinder by fully retracting
it (i.e. put hydraulic lift lever in LOWER position).
Figure 17
3.
Disconnect hydraulic hose from base end of cylinder
and install a steel plug with o–ring seal in the hose (Fig.
Clean any remaining oil from cylinder port.
17).
4.
Start engine and apply pressure to rod end of cylinder
(i.e. put hydraulic lift lever in LOWER position).
5.
If any oil comes out of open cylinder port, cylinder has
an internal leak. Repair or replace cylinder.
6.
Reconnect hose disconnected in step 3 after test or
repairs are complete.
Workman 3000/4000 Series
Page 9 – 21
Hydraulic System
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