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Quick
coupler
Adjustment
screw
Part #: 90309
S
H
ERVICE
The service hoist circuit is independant of the main work circuits
and is operated by an electric hydraulic pump with adjoining oil
tank. Two small bore cylinders allow the body to be raised for
maintenance purposes.
T
HE SERVICE HOIST IS NOT INTENDED TO LIFT A LOADED BODY
Adjustment procedure:
Note:Should adjustment be required, an adjustement screw
?
is located on the side of the pump body, under the
protective cover.
1.
Remove the protective cover.
2.
Install a 3000-psi gauge on the quick coupler of the pump.
3.
By using the pump lever, raise the body until the cylinders
reach the end of their stroke.
4.
Check pressure while the body is held fully raised.
5.
The pressure reading shall be at 2000 psi. Adjust the
relief if necessary.
6.
Turn the adjustment screw clockwise to increase the
pressure and counterclockwise to decrease it.
(
OIST
OPTIONAL
CAUTION
)
.
71
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