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Instructions Cautionary
Notes
With retaining plate screws tight, the
final stage piston should be free to
move (“float”)
If piston is tight, bottom “flange” of
piston will need to be lapped.
Check that final stage piston ring side
clearances and end-gaps concur with
clearances detailed in Table 3 Piston
Ring End Gaps)
Fit piston rings to piston.
Orientate piston ring end-gaps, 180 deg to
each other.
Oil piston rings generously.
Fit o-ring into groove in bottom of
final stage cylinder.
Ensure o-ring is greased.
Slide final stage cylinder over piston.
Ensure that cylinder is right way up.
Fit concentric valve bottom gasket
(GKS-7670) to final stage cylinder.
Fit concentric valve top inner gasket
(GKV-04503511) to valve and top
outer gasket (GKV-07006310-S) to
valve recess in final stage head.
Fit concentric valve to final stage
head.
Ensure that valve gaskets remain in place.
Slide final stage head over studs onto
final stage cylinder.
Tighten head retaining nuts to 140 ft-
lbs
Tighten head nuts incrementally starting
at approximately 80 ft-lbs increasing
torque by 10 ft-lbs at a time until full
torque is reached.
Intermech Ltd. BBR-6015-2 Compressor Service Manual
