MAINTENANCE Section 6 - Pg 02
6.4 Every 500 Hours or Yearly, Whichever Comes First
IMPORTANT – It may be necessary to change at earlier intervals if oil has water
contamination or if compressor is operated in poor/dirty environment.
1. Change the oil filter element.
2. Drain and refill air/oil receiver sump.
3. Replace intake air filter.
4. Annually replace separator element (located in air-oil sump).
5. Inspect exterior of front mounted oil cooler, clean if necessary.
6.5 Parts Replacement and Adjustment Procedures
6.5.1 Compressor Oil Change and Filter Replacement Procedure
Warm-up compressor for 5 to 10 minutes to warm the fluid. Shut the compressor off and
relieve all internal pressure before proceeding. Drain the fluid sump by removing the
plug at the bottom of the sump tank. Change the compressor fluid and replace the fluid
filter element. For element replacement see procedure for servicing the fluid filter in this
section. Fill the sump with fluid according to specifications in Section 3.
6.5.1.1 Compressor Oil Change Procedure
IMPORTANT! Ensure the vehicle is parked on a level surface before performing this
procedure. Refer to Figure 6-1 and the following instructions:
1. Run the compressor five to ten minutes to warm the oil.
2. Relieve all internal compressor system pressure (open service valves), and allow the
oil to settle.
3. Remove the receiver tank drain plug, located on the tank bottom, and drain into an oil
drain pan.
4. Replace and seat the drain plug after all compressor oil has been drained.
5. Refill the receiver tank with three gallons of Vanair
®
Vanguard™ Premium Synthetic
Oil.
6. Run the compressor for a few moments to circulate new system oil.
7. Check the receiver tank oil level in the sight glass (level should be at the sight glass
mark, with the compressor off). Add Vanair Vanguard Premium Synthetic Oil as
needed (DO NOT overfill the tank).
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