PPI-4-116 REV. C
IMPCO Technologies Inc.
July, 2015
Page 14 of 15
3030 South Susan St.
Santa Ana, CA 92704
www.impcotechnologies.com
3030 S Susan Street, Santa Ana, CA 92704
Ph: +1 714 656 1200
Fax: +1 714 656 1400
36. Place Cover (2) in correct position and insert
Screws (1).
37. Tighten Screws (1) alternatively from side to side
across cover until all are solidly fastened. Torque to
28-32 in-lbs. (3.2-3.6 Nm)
38. Pressurize the “Fuel In” opening with
approximately 100 psi of air pressure. Draw a soap
bubble across the Lockoff outlet and vacuum port
(labeled “VAC”) to verify that no air is flowing through
either opening. If air escapes, the rebuild has failed
and the Lockoff must be replaced. Apply a small
amount of vacuum to the port labeled “VAC” to verify
the air flows freely through the outlet. Use soap and/or
a commercial leak detector solution to inspect the
gasket seals around the perimeter of the Lockoff for
leaks. If leaks are found, the Lockoff must be replaced.
If no leaks are found, the Lockoff can be reinstalled and
returned to service.