AR KIT-VR25 Mounting Instructions

Mounting Instructions for the KIT-VR25
Please read through complete directions before replacing the pump.
The KIT-VR25 is pre-assembled with AR64545 SAEW90 specialty pump oil and will
not require oil to be added to the pump before use.
Do not change oil. Use oil only to add to pump if oil level is low.
This oil is a specially formulated synthetic with special additives for the demands of the
RMW series pump. No other oil is factory approved for these pumps, and could result in
pump failure.
The pump kit consists of the following parts:
1) Pump RMW Series by AR
1) 3/16 Square Drive Key
1) Mounting Bolt Kit with Spacer Washers.
1) ¼ Thermal Relief Valve- Already Installed
Mounting Instructions:
1 Remove the old pump from the engine by removing the large bolt that runs
through the center of the pump on oil free Bi Radial pumps and then remove the 4
bolts that are currently holding the pump to the engine flange.
For replacement of the PK series pumps remove the 3 bolts that are currently
holding the pump to the engine flange.
These bolts will not be needed for reassembly.
Remove the pump from the engine shaft and remove the drive connector coupler
from the engine crankshaft.
We suggest spraying the bolts and pump shaft with "Break Away" or a similar
type of penetrating fluid to help in the removal process of the bolts and pump.
a. Sometimes you may need to allow the pump to set for several hours before
removing the pump do to rust and corrosion on the pump shaft.
b. Some removals may require the pump to be carefully wedged off of the
engine crankshaft. If this process is required take great care not to damage
the engine case. Too much pressure against the engine case could cause a
small crack in the engine case.
2 After the old pump is removed, clean the engine crankshaft surface with some
emery cloth as well as the keyway in the crankshaft.
Pump Kit