(SHEET 4 OF 12)
Install delivery valve holder (52) and tighten to 32 to 33 lb-ft.
Repeat steps (a) through (e) above to install remaining five valve
Retighten six delivery valve holders (52) to 32 to 33 lb-ft.
thread sealant to threads of plug (28). Install plug using plug
Tighten plug (28) to 44 to 50 lb-ft.
plunger pliers, install plungers (40) in their associated barrels.
that markings on plunger are facing outward.
piece of aluminum stock
material to size to fit on ledge
of housing as shown. Install
stock material to hold plungers
(40) in position.
Install a 1/4-28 pipe plug in
leakoff port (port nearest drive
end of housing). Connect a
source of compressed air to
inlet port (port at governor
end; port is 1/4-28).
Immerse housing in a vat of clean calibrating fluid and
pressure. Check for air bubbles. A very small stream of
around delivery valves and barrel seats is permissible.
are seen where plugs (28 and 62) are installed at drive
ends of housing or at baffle screws, remove and discard
apply 40 psi air
air bubbles from
If air bubbles
parts and in-
stall new parts. If there is more than a very small stream of air bub-
bles from around delivery valve or barrel seats, check O-rings (54) or
gaskets (56) for damage. If there is a steady stream of air bubbles from
a delivery valve holder (52) port, check associated plunger (40) and
barrel (58). If there is a steady stream of air bubbles from housing,
Remove housing from vat. Relieve air pressure and disconnect compressed
air source from housing. Remove plug and fitting installed in leakoff
and inlet ports.
Mount housing in swiveling vise.
Remove aluminum stock material from housing and remove plungers using
(9) Install three clamps (50), clamps (51), and screws (49).