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Flushing the pump requires (2) 3/8" normal pipe thread (NPT) pipe nipples at least 4" long.
Remove all muffler and filter elements and remove inlet and outlet end cap assemblies from pump housing (refer to Figure 5 to correctly
identify end cap assemblies).
Insert 3/8" pipe nipples through openings in Muffler box and thread into ports where end cap assemblies are threaded. HAND
TIGHTEN ONLY.
WARNING: WEAR EYE PROTECTION AND FLUSH PUMP IN A WELL VENTILATED AREA.
With pump running, spray safety solvent directly into inlet port for approximately 5-10 seconds. While adding solvent, listen for
changes in motor sounds in unit.
If motor sounds smooth out, plug inlet port for 20-30 seconds and then release vacuum. Repeat this procedure three or
four times, each time spraying solvent into pump for 5-10 seconds.
When complete, run the pump for several minutes until all traces of solvent are gone and there are no noticeable odors. Reassemble
pump and install new outlet filter.
WARNING: RUN THE PUMP FOR A SUFFICIENT TIME TO PURGE ALL TRACES OF THE SOLVENT BEFORE
REPLACING FILTERS, RECONNECTING THE AIR SUPPLY HOSE AND USING THE RESPIRATOR.
If motor sounds do not improve, install Vane Kit (P/N 80522) per Vane Kit installation instructions.
NOTE: NEVER LUBRICATE THIS OIL-LESS PUMP. THE MOTOR BEARINGS ARE GREASE PACKED AND SEALED.
THEY REQUIRE NO FURTHER LUBRICATION.
VANE KIT INSTALLATION
Each Vane Kit contains all of the items normally necessary to replace the vanes and bring the pump back into proper operating
condition. Follow these steps to install Vane Kit:
Disassembly (refer to Figure 5):
WARNING: DISCONNECT UNIT FROM ELECTRICAL AND VENT ALL AIR LINES TO PUMP TO REMOVE
PRESSURE BEFORE SERVICING. FAILURE TO DO SO CAN RESULT IN DEATH OR SEVERE INJURY.
Remove end cap assemblies 10 from front muffler box.
Carefully remove five (5) bolts that hold muffler box in place (be careful not to damage bolt gaskets, as they may not require replacing).
Tap box with a small hammer to break it loose. Do Not Pry with a Screwdriver, as muffler box gasket will be damaged.
Remove six (6) bolts holding end plate to body
Remove end plate and four (4) vanes. Note Direction of Bevel Edge on Vanes. When reinstalling or replacing, be careful to face
vane bevels in the proper direction (see exploded view).
Clean out body and rotor slots.
Check for scoring on end plate and body. If severe scoring is visible or bearing needs to be replaced, contact your local
distributor or the factory for service.
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