April, 2008 IMPCO Technologies Inc. PPI-109-REV. B
•
Model
L:
With the secondary chamber cover off, lay the gauge on the regulator body with the secondary
lever inside the slot labeled “L” as illustrated. The gauge should just contact the secondary
lever without being lifted from the body. Make any necessary adjustments by removing and
carefully bending the secondary lever.
NOTE:
Bending the lever in place may result in damage to the seat.
Model “L” Regulator
E. Model “J” Bushing:
The Model “J” bushing is used in conjunction with either the F4-4 or F4-8 pressure test adapter for
performing a secondary pressure test on a Model “J” regulator/converter. To perform the test,
remove the ½” NPT plug from the unused vapor fuel outlet. Apply a small amount of Loctite
TM
567
or equivalent thread sealant on the bushing threads and install the bushing in the outlet. Then,
apply some of the sealant onto the F4-4 or F4-8 pressure adapter and install it into the bushing.
Connect the 3/16” vacuum hose to the adapter and the other end of the hose to the proper pressure
gauge nipple (depending on fuel type).
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