22
Instruction Manual
Oildyne 108/118 and 165/175 Series
Hydraulic Power Units
Bulletin HY22-3210A/US
Parker Hannifin
HPS Division
New Hope, MN 55428 USA
Maintenance
Remove the ‘
A
’ reservoir screw using an 8 mm (5/16 in) socket
head wrench/nut driver. Retain the screw/o-ring for reassembly.
‘A’ reservoir screw
Remove the ‘
B
’ reservoir screw using a 4 mm (5/32 in) hex key.
Retain the screw for reassembly. It is recommended that the
bonded washer/rubber seal is replaced. It is Parker Oildyne part
number 415067.
‘B’ reservoir screw
The ‘
C
’, ‘
D
’, ‘
P
’, ‘
Q
’, ‘
R
’ and ‘
S
’ reservoirs are held to the power
unit by four Phillips-head screws. Remove the oil from the tank
using a siphon through the reservoir filler port. Remove the four
screws and separate the reservoir from the power unit. Retain
the screws for reassembly.
The ‘
F
’ and ‘
G
’ reservoirs are held to the power unit by two
screws located in the welded mounting ‘ears’ of the reservoirs.
Remove the oil from the tank using a siphon through the
reservoir filler port. Remove the ‘
F
’ and ‘
G
’ reservoir screw
using an 8 mm (5/16 in) socket head wrench/nut driver.
Keep the two plastic spacers positioned between the power
unit adapter and reservoir ‘ears’. They will be needed for
reassembly. Retain the screws and the reservoir seal for
reassembly also.
The ‘
H
’, ‘
I
’ and ‘
J
’ reservoirs use an adapter plate between the
power unit adapter and the larger reservoir flange. Remove
the oil from the tank using a siphon through the reservoir filler
port. Remove the four screws holding the reservoir flange to the
adapter plate using an 8 mm (5/16 in) socket head wrench/nut
driver. Keep the screws for reassembly.
Inspect the suction screen – one for single direction power
units, two for reversible circuits. If any screen is damaged or
in any way plugged up, it should be replaced. In vertically
mounted configurations, the strainer is pressed onto the pump
suction leg. With a pair of pliers clamped on the strainer’s
aluminum ring, gently pull the strainer off of the pipe. If
necessary, twisting the pliers will help remove the strainer. In
horizontally mounted configurations, the suction strainer is
usually installed over an o-ring of the suction elbow. Again,
using a pair of pliers clamped on the strainer’s aluminum ring
gently pull the strainer from the elbow.
Suction Screen Installation
Vertical mount reservoirs:
Insert the suction screen into a 16 mm (5/8 in) socket. Using
a hammer, tap the socket and strainer onto the pump suction
leg so that it is secure on the pump leg, but before the bottom
of the suction leg touches the strainer screen itself.
NOTE: If
the suction leg end is touching the screen itself, the useful
screening area of the strainer is greatly reduced.
Horizontal mount reservoirs:
Using fingers only, grasp the aluminum ring of the strainer and
push the strainer onto, and over the o-ring on the elbow. When
the strainer is properly installed the o-ring on the elbow will
retain it.
Reservoir reinstallation
‘A’ reservoir
Invert the power unit so the motor end is down. Ensure the
rubber seal is in place in the power unit adapter pilot, against
which the reservoir will mount. Insert the reservoir screw/o-ring
through the hole in the reservoir end. The pump’s mounting
leg will be very close to the reservoir end. Align the screw with
pump’s mounting leg threaded hole.
This is a self tapping
screw so following these instructions is critical to ensure
a proper installation.
Failure to ensure the screw thread and
pump mounting thread are aligned can cause a new thread to
be formed or cross-threading. Either outcome will not provide
an adequate tightness. Turn the screw counter-clockwise in the
pump’s mounting leg hole thread, until an audible ‘click’ is heard
and felt by the fingers. Only at this point will you turn the screw
clockwise to begin tightening the screw into the pump mounting
leg. Tighten to a torque of 2.8 +/- .5 Nm (25 +/- 5 in-lbs). Follow
the complete mounting, filling, bleeding and startup instructions
on page 15.
‘B’ reservoir
Invert the power unit so the motor end is down. Ensure the
rubber seal is in place in the power unit adapter pilot, against
which the reservoir will mount. Insert the reservoir screw and
new bonded washer/rubber seal (with the seal end facing the
