Sullair 125 - Maintenance Every 500 Hours; Maintenance Annually or Every 1500 Hours; Maintenance Every Year or 12,000 Miles; Parts Replacement and Adjustment Procedures

Section 5
MAINTENANCE
28
7. Check Engine Operator’s Manual for required
service.
5.8 MAINTENANCE EVERY 500 HOURS
Perform the following after every 500 hours of oper-
ation:
1. Check the engine RPM. Idle speeds should
never be allowed to fall below the minimums
(see Section 3 Specifications).
3. Lubricate the control linkage.
4. Check Engine Manual for required service.
5.9 MAINTENANCE ANNUALLY OR EVERY 1500
HOURS
1. When using Sullair AWF, change the compressor
fluid. (See maintenance procedures in Section
5.9).
2. Change the engine coolant.
3. Change the separator element.
5.10 MAINTENANCE EVERY YEAR OR 12,000 MILES
1. Lubricate axle bearings on wheel-mounted units.
5.11 PARTS REPLACEMENT AND ADJUSTMENT
PROCEDURES
COMPRESSOR FLUID CHANGE 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 replace-
ment see procedure for servicing the fluid filter in
this section. Fill the sump with fluid according to
specifications in Section 3.
COMPRESSOR FLUID FILTER ELEMENT
REPLACEMENT
Refer to Figure 5-1.
1. Using a strap wrench, remove the old element.
2. Clean the gasket seating surface.
3. Apply a light film of fluid to the new gasket.
4. Hand tighten the new element (from kit P/N
250028-032) until the new gasket is seated on
the gasket seat.
5. Continue tightening the element by hand an addi-
tional 1/2 to 3/4 turn.
6. Restart the compressor and check for leaks.
AIR FILTER MAINTENANCE
Refer to Figure 5-2. Air filter maintenance should
be performed as often as conditions require. If the
filters are equipped with an optional maintenance
indicator, maintenance should be done when the
indicator shows red. The following procedure will
explain how to replace the air filter element.
AIR FILTER ELEMENT REPLACEMENT
1. Loosen and remove the air filter end cover.
2. Remove element.
3. Clean the body and cover with a damp cloth
inside and out.
4. Replace the new filter element.
5. Reposition the cover and lock into position.
6. Reset the air filter restriction indicator if so
equipped, and the unit will be ready for opera-
tion.
ELEMENT INSPECTION
1. Place a bright light inside the element to inspect
for damage or leak holes. Concentrated light will
shine through the element and disclose any
holes.
2. Inspect all gaskets and gasket contact surfaces
Operation at speeds below the minimum idle
speeds shown in the Table in Section 3,
Specifications will damage the compressor.
Extended operation below those speeds will
induce coupling and/or compressor failures.
NOTE
Figure 5-1 Compressor Fluid Filter
*Replacement Element Kit P/N 250028-032