MR2 Manual
Revision B
/
June 2021
Page 30
of
34
Worn O-Ring
If material is visible at the top of the piston rods, the piston bushing O-rings are damaged.
To replace the O-rings, follow the procedure below.
1.
Use a 2.5 mm hex key remove the eight M4x12 oil window screws. Remove the
lubrication fluid and clean any remaining material.
2.
Use 90° snap ring pliers to remove the snap ring at the bottom of the piston bushing.
3.
Use your finger to push up on the piston bushing to remove it.
4.
Clean any material or lubrication fluid off of the bushing.
5.
Use the hook and pick set to remove the two O-rings on the bottom and top of the
inner bushing.
6.
Apply a small amount of clear grease to new O-rings. Make sure the O-rings are well
coated.
7.
Install the O-rings into the bushing.
8.
Slide the bushing into the top of the metering body.
9.
Use the 90° snap ring
pliers to install the 5/8” snap ring.
Calling Technical Support
Technical Support is always available to help. The phone number is +
1
(
844
)
734
-
0209
or
to create a support ticket. Before you contact PVA, have the
following information:
1.
Record all the information on the OIT when the error occurred, include any error
messages that may appear.
2.
Record the operation in progress when the module had the error (when did it have
problems, what was it doing, etc.).
3.
If the error was not serious, attempt to repeat the error. If the error does not repeat,
the problem may have been operator generated.
