Manual, Air Module, AH2
Document #9620-20-D-AH2-09
Pinnacle Park • 1031 Goodworth Drive • Apex, NC 27539 • Tel: 919.772.0115 • Fax: 919.772.8259 • www.ati-ia.com • Email: info@ati-ia.com
D-8
11. Lubricate the bore in the module housing with Magnalube G (Teon/Petroleum based grease).
NOTICE: Do not lubricate the O-ring face seal until after installation. Lubricating
the O-ring before installation can cause the O-ring to blow out during coupling and
uncoupling.
12. If replacing seals, lubricate the valve stem O-ring and the check valve piston U-cup seal with
Magnalube G (Teon/Petroleum based grease).
13. Install the O-ring on the valve stem.
14. Install the U-cup seal on the check valve. Do not get lubrication in the face seal groove in the
check valve.
15. Install the non-lubricated O-ring (face seal) into the check valve.
16. Install the spring into the bore in the module housing, seat the check valve on the spring.
17. If the threaded end of the valve stem does not have pre-applied adhesive, apply Loctite 7649
primer and then Loctite 222 or similar thread locker to the threaded end of the valve stem. If the
module housing is stainless steel, also add Loctite 7649 primer to the housing threads.
Figure 5.2—Master Self-Sealing Valve Installation
Bore in Module Housing (Lubricate)
Valve Stem
Check Valve
Spring
O-Ring (Face Seal)
(Lubrication after Installation)
U-Cup Seal (Lubricate)
O-Ring (Lubricate)
Install U-Cup
Seal as Shown
18. Install the valve stem. The check valve piston must be pushed down ush with the mating
surface of the Master housing in order to install the threaded end of the valve stem. Do not
damage the U-cup seal around the check valve piston. A small, at-head screwdriver can be
used to ensure that the U-cup seal is fully located in the recess and not folded over itself prior to
screwing in the valve stem. Tighten the stem to 10 in-lbs (1.1 Nm).
19. Lubricate the installed O-ring (face seal) with Magnalube G (Teon/Petroleum based grease).
20. After the procedure is complete, resume normal operation.
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