GMC 1976 ZEO 6083 Maintenance Manual page 806

24J- 16
LIVING AREA WATER SYSTEM
Figure 27-Removing Diaphragm and Valves from
Recess
5. Inside the upper housing are three inlet-outlet
valve assemblies . They can be removed by hand .
After removing all three valve assemblies, remove
the rubber gasket by hand (figure 29).
6. The rubber bushing is either on the motor
coupling or the drive coupling and can be removed
by hand . (figure 30) . Remove the support plate in the
lower housing by removing three screws (figure 31).
7. Remove three screws that secure the wobble
plate to the piston assembly . Remove wobble plate
(figure 32), steel ball, and bushing (figure 33). The
drive coupling and bearings rest on the wobble plate
and will be removed with the plate. Lift the coupling
off the plate and lift the bearings off the coupling
(figure 34).
8 . Remove the piston assembly (held by screws,
removed in step 7, to the wobble plate), then take the
piston tops and bottoms apart from the diaphragm
(figure 35).
ASSEMBLY
Figure 28-Upper and Lower Housings Separated from Motor
1 . Place three piston tops through diaphragm and
piston bottoms, then position on lower housing (fig-
ure 35).
2 . Lubricate steel ball and place on bushing.
Place bushing with ball into lower housing. Flat on
bushing shaft matches flat in housing hole (figure
33) .
3. Grease bearings with GM 1051344 or equiva-
lent. Assemble to drive coupling with mylar shim
and bearing covers . Place assembled parts on wobble
plate (figure 34) .
4. Place wobble plate in position in lower housing
and secure with three screws to threaded holes in the
end of piston top shafts (figure 32).
5. Place support plate over drive coupling and
secure with three screws to housing (figure 36).
6. Place rubber bushing over motor coupling (fig-
ure 30).
7. Place rubber gasket in upper housing, then
place three inlet-outlet valves over gasket (figure 29).
8. Secure upper housing to lower housing with
three screws and nuts . Then secure housings to mo-
tor with three long screws .
9. Place check valve assembly, spring, and valve
with diaphragm assembly in recess of upper housing
(figure 27).
10 . Place plunger over rubber diaphragm and
spring over plunger (figure 26).
11 . Place micro switch in switch cap (figure 37)
and secure cap to upper housing with two screws .
Hold cap securely against spring pressure while turn-
ing screws (figure 25).