PressureGuard Installation Manual - Fleet Air

3-3 Before proceeding confirm that the spindle Plug Assemblies 13 and Hubcap
Assemblies 15 , provided in your kit, are the proper size for the axle bore
(spindle plugs) and wheel hub (hubcaps) in your application. Also, see that
the wheel valve stems are offset 180 degrees from each other.
3-4 Using a 1 1/8" dia. punch and hammer, drive a 1 1/8" dia. hole through the center
of the axle Welch plug. Do not use a drill for this step. The metal filings
may damage the wheel bearings. See 'Tool and Equipment' section for Punch
End.
12