Installation
308048N
5
Installation
Refer to the complete pump manual for detailed
installation information or contact your Graco
distributor.
NOTE
: A 1 in. npt seal (7) is supplied in a plastic bag
with the motor. Thread the seal onto the threads of your
hydraulic return line fitting (A). Thread the fitting into the
upper housing (53) and torque as needed. Then tighten
the seal (7) against the motor to provide a secure seal.
See Fig. 1.
F
IG
. 1 ___________________________________________
Maximum Hydraulic Input Pressure
The maximum safe hydraulic input pressure to this
motor depends on the lower displacement pump to
which it is connected.
Refer to the lower manual and the pump manual for
the maximum fluid working pressure and the ratio.
Never exceed the maximum fluid working pressure of
the pump. Serious injury or damage to the equipment
may result.
To reduce the risk of serious injury whenever you are
instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 8.
Be sure you always shut off the supply line shutoff
valve (E) first, and then the return line shutoff valve.
This is to prevent over pressurizing the motor or its
seals. When starting up the hydraulic system, open
the return line shutoff valve first.
NOTICE
Keep the hydraulic system clean
To reduce the risk of damaging the hydraulic power
supply, blow out all hydraulic lines with air, flush
thoroughly with solvent, and then blow out with air
again before connecting the lines to the motor.
Always plug the hydraulic inlets, outlets and lines when
disconnecting them to avoid introducing dirt and other
contaminants into the system.
Carefully follow the manufacturer’s recommendations
on reservoir and filter cleaning, and periodic changes
of hydraulic fluid.
NOTICE
Recommended Hydraulic Oil
Use Graco-approved Hydraulic Oil, Part No. 169236 (5
gal) or 207428 (1 gal)) or a premium, ISO grade 46
petroleum-based hydraulic oil containing rust and
oxidation inhibitors and anti-wear agents.
Before using any other type of oil in this motor, contact
your Graco distributor. Unauthorized use of lesser
grade oil or substitutes may void the warranty.
Hydraulic Oil Working Temperature
The recommended hydraulic oil operating temperature
is 80 - 115° F (27 - 45° C). The motor seals will wear
faster and leakage may occur if the pump is operated
at higher oil temperatures.
If the hydraulic oil temperature approaches 130° F (54°
C), check the hydraulic fluid supply cooling system,
filters, etc. and clean or repair as needed.
7
53
A
04467
