Repairing
the
Check
Valves (See Fig 5)
1.
Remove the bolts (14). washers
(16)
and nuts (15)
from the outlet manifold
(20).
2.
Tap the manifold with
a
plastic mallet to free it from
the pump. Remove
all
four gaskets
(171,
the valve
plate
seats
(18)
and the balls (19).
3.
Turn the pump over and remove the inlet manifold
(21). gaskets, seats and balls.
4.
Clean the manifolds and
all
mating parts thoroughly.
wear, and replace parts
as
needed.
Check the gaskets, plates and balls for nicks or
5.
Working on the inlet side (boaom) first (arrow on
diaphragm cover will face down); install
a
gasket
gasket (17) on each side of the housing
(2).
(17). ball (191, valve seat plate
(18)
and another
NOTE:
Be
sure the chamfered side of the valve seat
plate faces the ball.
6.
Install the manifold on the pump housing using the
bolts
(141,
and washer
(16)
on each end
of
the bolt,
and the nuts (15). Torque the bolts to
27
N.m
7.
Turn the pump over. Install a gasket (17). valve seat
plate
(18)
with chamfer facing the ball, the ball (19)
and another gasket
(17)
on each side of the housing
(2).
Install the other gaskets and the outlet manifold
(20)
as
in step
6.
(20
ft-lb).
FLUID
OUTLET
Fig
5
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