Check for general air leakage and correct motor operation.
Perform a pump stall test to ensure correct operation.
Perform a stall test on the pump assembly. If air is escaping through exhaust, check air motor piston
seal and QEV piston, replace as required.
Main valve assembly is not working.
Check the main valve assembly, and clean or replace.
Inspect, clean and replace as required.
Inspect, clean and replace as required.
Inspect, clean and replace as required.
Check for constant exhaust air when pump is not in a stalled condition.
Check the QEV pistons, and clean or replace.
Pump runs but
has excessive
pulsation.
Worn/failed motor rod seals.
Replace motor rod cartridge assembly.
Replace motor rod cartridge assembly.
Replace poppet assemblies.
Inspect and replace if required: Main valve assembly parts.
Order a 250649 Valve repair kit.
Check air and fluid supply ball valves and supply hoses.
Poppet assemblies are not working.
Switch/interchange poppet assemblies to isolate the faulty poppet, and
clean or replace.
12 to 36 Months (Typically 10
million pump cycles, dependent
on air quality)
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