77-2924
page 14 of 24
AX140S AIR MOTOR ASSEMBly – TROUBlEShOOTING
PROBlEM
CAUSE
SOlUTION
Pump will not start
No compressed air.
System is blocked.
Check compressed air supply.
Clear the blockage.
Erratic operation of air
motor, air motor stops
Worn poppet assemblies.
Worn or dirty spool and sleeve
assembly.
Replace poppet assemblies.
Clean or replace the spool and sleeve
assembly as necessary.
Continuous air leak from
the exhaust
Worn poppet assemblies.
Worn piston seal.
Worn diaphragm.
Replace poppet assemblies.
Replace piston seal.
Replace diaphragm.
