HGF Series Service Procedure
32
Figure 90
Figure 89
Figure 88
Figure 87
CAUTION
CAUTION: The unit will not
function if the valve plate is not
positioned on the isolation
manifold exactly as shown in
FIGURE 86. If the valve plate
spring slots, isolation manifold
spring recesses and springs are
not centrally aligned in this step,
the springs could be damaged
when the port manifold is placed
on the assembly.
Install valve ring seal
ring
36. Apply clean grease to the valve
ring seal ring (3). Install seal ring
in the valve ring (12). See
FIGURE 87.
Install 3/4 inch springs
37. Place port manifold (8) valve side
up on a clean surface. Install
three 3/4 inch (19 mm) springs (9)
into the spring pockets. See
FIGURE 88.
Install check ball
39. Install new "O" ring (7) on plug (6),
insert check ball (5) into check ball
hole in port cover (2). Be sure ball
(5) is seated in bottom of check
ball hole. Turn plug assembly (6,
7), into port cover (2) until ball (5)
is retained. See FIGURE 90.
Install port manifold
38. Apply a few drops of oil to the
valve plate (13). Align the grooves
on the side of the port manifold (8)
with the grooves on the side of the
isolation manifold (15) and
assemble the port manifold with
the springs toward the valve plate
(13). Be careful not to pinch a
spring during installation. The two
alignment pins (11), in the valve
plate, will engage the holes in the
port manifold. The pin on the hex.
drive assembly (10) must engage
the center hole in the port
manifold. See FIGURE 89.
