GMC 1976 ZEO 6083 Maintenance Manual page 827

The drainage system (figure 1) consists of ABS
plastic pipes and fittings . A holding tank with a
capacity of approximately 32 gallons stores waste
water from the sinks, shower and toilet .
The tank is vented through three standpipes with
roof-mounted vents.
HOLDING TANK AND DRAINAGE SYSTEM 24L- 1
SECTION 24L
HOLDING TANK AND
DRAINAGE SYSTEM
The contents of this section are listed below:
SUBJECT PAGE N0 .
General Description . . . . . .. . . .. . . .. . . . . .. . . .. . . . .. . . ... . ... . . ... . .. . . ... . . .. . . ... . ... . . . .. . . . . . . . . .. . . . . . . . .. . . . . . . . . . . . . . . . . . . .24L-1
Trouble Diagnosis . . . . . . .. . . ... . . ... . . ... . . .. . . . .. . . ... . ... . . .. . . .. . . .. . . . .. . . ... . .... . ... . . ... . . .. . . . .. . . .. .. . . . . . . . . . . . . . . . .. .24L-2
Holding Tank .. . . .. . . . .. . . . . . . . . . . . . ... . . ... . . .. . . . . . . . .. . . ... . . . . . . .. . . .. . . .. . . . .. . . .... . ... . . . .. . . ... . . ... . .... . ... . . .. . . . .. . . .. .24L-3
Drain Pipe and Fittings . . .. . ... . . ... . . .. . . . .. . . ... . .... . .. . . .. . . ... . . .. . . ... . .... . ... . . . .. . . ... . . ... . . . .. . . .. . . .. . . . .. . . . . .24L-6
GENERAL DESCRIPTION
A tube assembly bolted to the holding tank and
a detachable sewer hose are provided for dumping
the contents of the holding tank .
ROOF VENTS
I
HOLDING TANK
N - - N - -
SHOWER TRAP
BATHROOM SINK TRAP
KITCHEN SINK TRAP
TOILET FLANGE
A-4793
Figure 1-Drainage System