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GMC ZE06581 1976 Maintenance Manual Supplement page 127

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24J-4 LIVING AREA WATER SYSTEM
REMOVAL
1 . Remove bolsters (back cushions), is so
equipped, from right rear corner of vehicle .
2 . Remove right twin bed to gain access to
water compartment .
3 . Turn off water pump at switch beside
entrance door.
Turn off water heater switch
located in bathroom.
4. Open plumbing drain valve and water
heater drain valve (located underneath the
water heater) .
5 . Disconnect hoses from check valve and
remove .
DRAINING LIVING AREA WATER SYSTEM
(ZE06582)
1 . Open the holding tank dump valve, after
making proper connection to approved dumping
station .
2 . Turn off water heater at switch located
in the bathroom.
3 . Remove bolsters (back cushions), if so
equipped, from right rear corner of vehicle .
4 . Remove right twin bed to gain access to
water compartment.
5 . Open
the
water
heater
drain
cock
(located underneath the water heater) .
Open
the tank drain valve and plumbing drain valve
(valves are located on either side of water
pump).
6 . Open the water tank drain valve and
plumbing drain valve (figure 1).
7 . Open the two water line drain cocks at
the kitchen sink . To gain access to water line
drain cocks for the kitchen sink, remove the
second drawer located to the left of the
kitchen sink compartment .
8 . Open the kitchen and bathroom faucets.
WATER
During
the
1976
model
year
a change
occured in the water treatment unit (formerly
water purifier) that effects service on the
unit .
On vehicles equipped with the new
cartridge assembly (see figure 2), the lower
two cartridges are identified with two stickers
("A" and "B") . Servicing this unit is described
by the following :
NOTE :
Under normal family usage the
BEAT
INSTALLATION
1. Connect hoses to check valve.
NOTE; Be sure arrow molded into body of
check valve is pointing toward water heater .
2 . Close plumbing drain valve and water
heater drain valve (located underneath water
heater) .
3 . Turn on water pump and open the hot
water faucet in the bathroom, until water
is filled (air no longer coming out of
faucet) . Check for leaks.
4 . Install right
part m en t .
5 . Install bolsters (back cushions), if so
equipped, in right rear corner of vehicle .
9 . Turn the flush knob on top of the toilet
90 0 clockwise until water no longer enters the
11.
10 .Open the shower head shut-off valve and
open
shower
faucets,
with
shower
head
extended toward shower stall drain .
11 . At the external water connection (inside
external utilities compartment), remove hose
connection cover.
Depress momentarily the
button on the check valve to allow this portion
of plumbing to drain.
Install hose connection
cover .
12 . Usin
blow back
from any low areas. Allow system to drain.
13. Turn on water pump, momentarily, to
remove any water remaining in pump housing,
then shut off.
14 . Close all water line drain cocks and
valves, including the water heater drain cock .
Close kitchen, bathroom, and shower faucets.
Close holding tank dump valve and latch . Stow
holding tank tubes and replace dust cap .
T UNI
over water com-
essure (30 psi maximum),
rough all faucets, forcing water
cartridge assembly is designed to last for
several years .
Interval for replacement of
either cartridge
may
be
determined by
restriction of water flow at treated faucet.
The filter cartridges are designed to restrict
water flow when replacement is required .
Be sure the cartridge assembly (all three
tanks) is removed from the vehicle when
unheated,
and
temperatures
fall
below
freezing.
The cartridge assembly should
then be stored in a heated facility .

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