VMAC - Vehicle Mounted Air Compressors
VMAC Technical Support: 888-241-2289
VMAC Knowledge Base: kb.vmacair.com
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Inspect the Viton O-ring on the oil drain plug for damage, hardness or defects
and replace if necessary.
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Install and tighten the oil drain plug and place it back in its holder.
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Remove the oil filter (Figure 33).
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Ensure the threaded nipple did not unscrew with the oil filter.
If the nipple came out with the oil filter, remove it from the filter, being careful to
avoid damaging the threads*:
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*To reinstall the nipple, thoroughly clean the threads and apply Loctite 242
(blue) to the end with the short threads and replace it in the AOST (Figure 34).
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Clean the gasket sealing surface on the front of the tank and inspect it for
damage. The surface must be free of old gasket material and smooth to ensure
a good seal. (Figure 34).
Figure 34 — Compressor oil filter
(some components removed for clarity)
Inspect sealing
surface
Oil filter nipple (Insert shorter
threaded end into WHASP Tank)
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Apply a thin coat of compressor oil to the rubber gasket on the oil filter.
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Spin the filter onto the threaded nipple until the gasket contacts the sealing
surface on the tank, then tighten the filter an additional 3/4 to 1 turn to seat
the gasket.
