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PD02PĆX
TROUBLE SHOOTING
Air Motor stalls.
S
Check for blown diaphragm
S
Check for damaged O" rings on the spool.
S
Check for damaged O" rings on the trip rod.
S
Check valve block gasket for leakage.
Air leaks from exhaust.
S
Check for damaged O" rings on the valve block, spool or trip rod.
S
Check gasket between valve blocks for leakage.
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U" cups on connecting rod bushing are damaged or installed backĆ
wards.
Fluid leaks from exhaust.
S
Check for diaphragm damage.
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Check for diaphragm screws not adequately torqued.
Low flow or pump continues to cycle after shutĆoff.
S
Check for trapped air if the pump is oriented where the inlet check is
above the outlet check. Temporarily increase the flow or reĆprime
the pump.
S
Check for damaged seats or foreign matter clogging the check asĆ
sembly.
Air leaks from pump (other than exhaust).
S
Check for bolts not evenly or adequately torqued.
S
Check for O" ring missing / damage between the fluid cap and the
air cap on the air inlet side.
External fluid leaks from pump.
S
Check for bolts not properly torqued.
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Check for damaged O" rings on the fluid cap tubes.
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Check for damaged O" rings on the valve check.
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Check for damaged diaphragm seal.
Pump operates but dispenses little or no fluid.
S
Check for obstruction in fluid line.
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Check for foreign matter clogging check assemblies.
Note: Install a fluid screen on the material inlet hose if the problem
continues.
S
Suction line too small.
S
Check for air leakage at the air / fluid inlet pipe plugs. Use teflon tape
or pipe sealant upon assembly.
TYPICAL CROSS SECTION
