GMC 1976 ZEO 6083 Maintenance Manual page 805

REMOVAL
1 . Turn pump off at light switch panel and open
a faucet to relieve pressure from the system .
2. Disconnect all wires from the pressure switch .
3 . Use an open end wrench on hex nut base of
switch and turn switch out of mounting hole.
INSTALLATION
1 .
Put fiber metallic supported washer on
threaded shaft of switch, with metallic side facing
switch .
2. Tighten switch securely onto pump .
3 . Connect wires to switch and turn on pump .
Check for proper operation.
WINTER STORAGE
The Type 1 water pump will withstand frozen
water damage provided the system is not under pres-
sure prior to freezing . To prevent damage, the entire
water system must be "winterized" thoroughly for
winter storage. See Section 24A .
TYPE 2 WATER PUMP OVERHAUL
(FIGURE 23)
DISASSEMBLY (FIGURE 24)
1 . Hold switch cap securely (figure 25) while
removing two screws because spring inside has
Figure 24-Type 2 Water Pump
LIVING AREA WATER SYSTEM
24J- 1 5
Figure 25-Removing Switch Cap
enough tension to throw the cap. Pressure switch
will drop out of cap after it is removed.
2. Spring and plunger will drop off (figure 26).
3 . Pull rubber diaphragm with valve assembly
out of recess, then remove spring and check valve
assembly (figure 27).
4. Remove three long screws and three short
screws with nuts securing upper housing to lower
housing, and lower housing to motor. Separate mo-
tor from housings and upper and lower housing from
each other (figure 28).
Figure 26-Switch Cap Removed