VMAC
– Vehicle Mounted Air Compressors
Toll Free:
1-800-738-8622
Local 1-250-740-3200
Fax: 1-250-740-3201
5
1000 Hour Service Procedures
For 1000 Hour Service, perform the 500 Hour Service and also replace the Coalescing Filter as below:
5. Replacing the Coalescing Filter
Follow all safety precautions.
Compressor
Coalescing Filter
Air/Oil Separator
Tank
Figure 4 - Coalescing Filter Location
Clean debris and dust from the area around the air/oil separator tank and the filter to prevent contamination.
Remove the filter by turning it counterclockwise using a suitable filter wrench.
Do not use a screwdriver punched into the side of the filter, as this practice can damage the scavenging tube
and screen. See Fig. 5.
Scavenge Line inserts into
Coalescing Filter during
installation
Coalescing Filter
Scavenge Line
Figure 5 – Avoid Damaging the Scavenge Line
Check the filter to make sure that the threaded nipple did not unscrew with the filter. If it is in the filter,
remove it carefully to avoid thread damage, coat the threads that go into manifold block with a small amount
of Loctite blue and install it into the manifold block. Use caution when removing the filter so as to avoid
catching the scavenge screen orifice on the bottom of the scavenge tube on the lip of the coalescing filter.
This scavenge screen orifice is attached to the scavenge tube by a “push to connect” fitting, if the fitting has
come off of the tube re-insert the tube into the fitting ensuring that the tube is fully engaged.
Check the gasket-sealing surface of the manifold block for contamination, old gasket material or damage.
