Re-Assembly Of The Piston - Victaulic FireLock I-756 Series Instructions Manual

REBUILD KIT INSTRUCTIONS
5-Year Rebuild Kit Instructions for FireLock
Dry, Deluge, and Preaction Valves
SERIES 756 AND 758

RE-ASSEMBLY OF THE PISTON

1. Turn the new diaphragm (supplied with the kit) inside out so that
the smooth, rubber side is facing outward and the fabric side is
facing inward (toward the piston).
2. Place the new diaphragm over the piston. MAKE SURE THE
FABRIC SIDE OF THE DIAPHRAGM CONTACTS THE PISTON.
3. Install the new washer (supplied with the kit) onto the piston-shaft
retaining bolt.
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4. Install the diaphragm retainer onto the piston with the piston-shaft
retaining bolt. Install the new piston shaft (supplied with the kit)
onto the piston-shaft retaining bolt.
5. Using a smooth-sided wrench on the flats of the piston shaft for
support, tighten the piston-shaft retaining bolt, as shown above.
Be careful not to damage the piston shaft. DO NOT use a pipe
wrench, vise grips, or any other tool that contains teeth on the
piston shaft.
6. Fold the diaphragm so that the lip is flush with the end of the
diaphragm retainer, as shown above.
LUBRICATE THE PISTON SHAFT WITH THE GREASE
7.
PROVIDED IN THE KIT (Nye® Lubricants, Inc. 8531R Grease).
I-756/758.RBKIT
I-756/758.RBKIT_13