Maintenance and Repair

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.

289190

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.

Air Regulator Assembly

for Desiccant Air Drying System

289340

 

 

80

100

 

 

60

 

 

4

0

4

6

120

 

 

 

 

8

 

2

2

 

 

1

 

 

10

0

 

 

40

 

 

 

 

160

 

289149

289165

288797

Screws (6)

288796

Diaphragm

 

Valve

 

289191(spring)

 

Bottom Plug

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

10

309921N

Page 10
Image 10
Graco 24M178, 234401 Self-Relieving Air Regulator, Cleaning, Air Regulator Assembly For Desiccant Air Drying System