Parts Replacement And Adjustment Procedures; Compressor Fluid Change Procedure; Servicing The Main Fluid Filter; Air Filter Maintenance - Sullair 900XH Operators Manual And Parts Lists

Section 5
MAINTENANCE
1. Clean the return line orifice and strainer.
5.9 PARTS REPLACEMENT AND ADJUSTMENT
PROCEDURES

COMPRESSOR FLUID CHANGE PROCEDURE

Warm-up the 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

SERVICING THE MAIN FLUID FILTER

Refer to Figure 5-1. The main fluid filter (P/N
02250111-592) is located schematically in the
coolant line between the receiver/sump and the
compressor unit. The main filter element is replace-
able. For installation of the filter element and o-ring
kit (P/N 250031-850), follow the procedure
explained below.
1. The compressor MUST be shut off and system
pressure MUST be relieved.
2. Drain by removing drain plug at bottom of bowl
and catching drainage in a container.
3. Rotate bowl counterclockwise and remove.
4. Remove element and o-ring from housing and
discard. This element is NOT cleanable.
5. Make sure mounting surface of filter head is
Figure 5-1 Main Filter (P/N 02250111-592)
*Repair Kit P/N 250031-850
34
3.
clean.
6. Apply a light film of fluid to o-ring and place it in
its proper position.
7. Place new, clean element in housing, centering it
on location in the head.
8. Inspect bowl seal and replace if necessary.
9. Replace bowl. Rotate clockwise and hand-tight-
en.
10. Replace drain plug. Torque to 15-20 ft.-lbs. (20-
27 Nm).

AIR FILTER MAINTENANCE

Refer to Figure 5-2. Air filter (P/N 02250049-036
[engine]) (P/N 02250053-402 [compressor]) main-
tenance should be performed when indicated on
instrument panel by the engine air filter restriction
gauge. The air filters are both equipped with a pri-
mary element and secondary element each.
NOTE
DO NOT strike elements against any
hard surface to dislodge dust. This will
damage the sealing surfaces and pos-
sibly rupture the elements.
The secondary element must be replaced after
every third primary element change. DO NOT
reconnect the secondary element once it is
removed.