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Maintenance and Repair
10 309921N
Self-Relieving Air Regulator
288787
Be sure air to the regulator is clean. Erratic operation or
loss of regulation is usually caused by dirt in the regula-
tor.
Cleaning
1. Follow the Pressure Relief Procedure, page 8.
2. Remove bottom plug, spring, and valve.
3. Remove six screws, and separate regulator body.
4. Clean all parts with denatured alcohol. Wipe off seat
and blow out body.
5. Inspect parts for damage and replace as needed. To
replace the valve and diaphragm, order Repair Kit
288796.
6. Reassemble parts and screw them into the regula-
tor before tightening the bottom plug. Make sure the
valve, diaphragm and spring are center aligned.
2
0
4
0
60
80
100
120
1
40
160
2
4
6
8
10
Air Regulator Assembly
for Desiccant Air Drying System
289340
288797
289149
289165
Part No. Description
289340 Air Pressure Gauge
289149 Plug
288796 Diaphragm/Valve Repair Kit
289190 T-handle Adjusting Screw
289191 Spring
288797 Nipple, 3/8 in. x 3/8 in.
289165 Shut-off Valve
289190
288796
289191
(spring)
Screws (6)
Valve
Bottom Plug
Diaphragm