Filter
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13
307-730
Pressure
Switch
(See Fig 1
1, 12 & 13
.)
1. Disconnect the pressure switch leads from the ON/
OFF
switch and from the rectifier
. See Fig 1
1.
2.
Remove the front cover (23). See Fig 13
.
3.
Unscrew the retainer (14) and remove the pressure
switch (12) and o-ring (12a). See Fig 12
.
4. Grease and install a new o-ring (12a) in the pump
housing
(9). See Fig 12
.
5.
Slide the retainer (14) over the pressure switch and
screw
the retainer into the pump housing. T
orque the
retainer
to 55–65 in–lb (6.2–7.4 N.m). See Fig 13
.
6. Guide the pressure switch leads through the base.
Connect a lead to the power-OUT side of the ON/
OFF
switch (34) and connect the other end to an un
-
marked
terminal on the rectifier (39). See Fig 1
1.
7.
Reinstall the front cover
.
CAUTION
To
avoid damaging the pressure switch, do not
drop
it
or press on the center of the switch.
Outlet V
alve
(See Fig 12
.)
1. Remove
the
outlet hose (64). Unscrew the outlet fit
-
ting
(2a) and remove the gasket (2b)
and spring (2c).
2. Tip
the pump forward to remove the ball (2d).
3. Use a 1/4 in. square socket wrench extension to
screw
out the seat (2e).
4. Use a pointed tool, such as a dentist’ s pick, to re-
move
the seal (2f).
5.
Thoroughly clean and dry all parts.
6. Tip the pump back. Install a new seal (2f), making
sure
it lays flat.
7. Install the seat (2e) and torque it to 80–100 in–lb
(13.5–16
N.m).
8.
Drop in the ball (2d),
making sure it stays there!
CAUTION
Do
not let the
ball drop into the pressure switch cav
-
ity
(12). If that happens, and the outlet fitting (2a) is
screwed into the pump, the switch will be perma-
nently
damaged.
9. Check the ball stop pin in the outlet fitting (2a) for
wear or damage. Replace the fitting, if necessary .
Place a new gasket (2b) around the fitting. The last
coil
on one end of the spring (2c) is turned in. Place
this
end on the ball
stop pin. Screw the fitting into the
pump housing, torquing to 280–300 in–lb (32–34
N.m
).
Inlet
V
alve
(See Fig 13
.)
1. Unscrew
the nut (45) on
the suction hose (44). Screw
the inlet valve housing (1) out of the pump housing
(9).
Remove the inlet valve (3).
2. Grease
the inlet valve (3)
to hold it in place. Install it
in
the valve housing (9). Screw the inlet valve hous
-
ing
(1) into the pump housing. Have someone firmly
hold
the pump housing (9) and then torque the inlet
valve to 470–490 in–lb (53–55 N.m).
Fig 12
1
2
2a
2b
2c
2d
2e
2f
9
10
12
14
TORQUE
T
O
80–100 in–lb
(13.5–16 N.m)
TORQUE TO
55–65 in–lb
(6.2–7.4 N.m)
TORQUE TO
280–300 in–lb
(32–34 N.m)
0296
12a
LUBRICATE
Fig
13
TORQUE
T
O
470–490 in–lb
(53–55 N.m)
1
44
9
23
24
45
3
0787