Ingersoll Rand ARO AFX Air Motor Mode D'emploi

ARO AFX air motors manufactured after 01 December 2016 has a ball detent in 96875 spool valve. This design change pre-
vents the pump from stalling in applications for which a solenoid valve is used to operate the pump.
For continuous pump operation, it is important to maintain 94276 grease between the 96889 D-valve and the ball in the spool
valve. The addition of an airline lubricator prior to the inlet of the air motor will wash out the grease within the air motor. The
lightweight oil typically used with airline lubricators will not provide enough lubrication between the ball detent and the air
valve.
In order to ensure that AFX air motors operate effectively, ARO recommends to not use airline lubricators with AFX air motors
manufactured after 01 December 2016. It is recommend to only use an airline filter prior to the inlet of the air motor.
In any case, for which the AFX air motor stalls under operation it is recommended to use 637538 service kit. This service kit in-
cludes the latest D-valve design and the necessary grease to ensure proper pump operation.
INGERSOLL RAND COMPANY LTD
209 NORTH MAIN STREET – BRYAN, OHIO 43506

(800) 495-0276  FAX (800) 892-6276
arozone.com
SERVICE BULLETIN
ARO® AFX Air Motor
Major Valve – Best Practices on Pump
Performance & Reliability
© 2020
EN
RELEASE: 2-14-20
(REV: A)
BULLETIN: 1-2020