Sump Breather Filter Maintenance - Sullair DR13 125H Operator's Manual And Parts List

Section 7
MAINTENANCE
3. At this time, remove the diaphragm assembly, dia-
phragm gasket, adjusting spring and spring but-
ton from the spring chamber.
4. Discard the brass diaphragm gasket, and replace
it with the new gasket from the kit.
5. Discard the diaphragm assembly, and replace it
with the new diaphragm assembly from the kit.
6. Remove the body plug from the body to allow ac-
cess to the post assembly. Remove and discard
the o--ring on the plug.
7. Replace the o--ring with the new o--ring from the
kit.
8. Re--assemble the piston, post assembly, piston
spring, o--ring and body plug into the body portion
of the regulator. Use Figure
9. Re--assemble the spring button, adjusting spring,
diaphragm gasket and diaphragm assembly into
the spring chamber. Use Figure
10. Replace the body and spring chamber; tighten
the adjusting screw until tension is realized.

7.7.8 SUMP BREATHER FILTER MAINTENANCE

Refer to Figure 7--9. This filter (P/N 02250118--025)
prevents sump pressure build--up and traps oil aero-
sol emanating from the compressor stages and gear
box. It uses a fine, replaceable element P/N
02250118--258, which may be accessed as follows:
INSPECTION/REPLACEMENT OF ELEMENT
1. Unscrew filter from vent line.
2. Inspect or replace the element with the new filter.
Figure 7-9 Sump Breather Filter
(P/N 022500118-025)
*Replacement Element P/N 02250118-258
34
7-8 as a guide.
7-8 as a guide.
7.7.9 OIL SUMP STRAINER MAINTENANCE
7.7.10 BLOWDOWN VALVE MAINTENANCE
7.7.11 DRIVE COUPLING MAINTENANCE
Figure 7-10 Blowdown Valve (P/N 02250119-178)
* Repair Kit P/N 02250122-079
The suction line of the oil pump is fItted with a 100
mesh, stainless steel strainer to protect its internals
from foreign matter. To service the cleanable strain-
er, proceed as follows:
1. With package starter de--energized, remove
sump--to--oil pump hose and disconnect oil by-
pass hose.
2. Loosen/remove bolts/washers securing circular
cover plate to sump tank.
3. Remove cover plate and gasket away from sump
tank-- some 1/4" control tubing may have to be re-
moved to provide clearance.
4. Inspect, clean, and/or replace strainer.
5. Reassemble in reverse order.
Refer to Figure 7-10. The blowdown valve (P/N
02250119-178) vents air to atmosphere in unload
mode. To maintenance the blowdown valve, follow
these directions:
1. Loosen/remove bolts/washers and nuts securing
cover to valve body.
2. Remove cover.
3. Remove diaphragm.
4. Replace diaphragm with new diaphragm.
5. Re-secure cover by re-positioning bolts, washers
and nuts. Tighten.
Refer to Figures 7-11 and 7-12. The compressor unit
and motor are rigidly connected via a rigid adaptor
piece, thus the shafts are maintained in proper align-
ment at assembly. However, during the initial start--
up, after transportation and installation, drive cou-