GMC PD-4103 Maintenance Manual page 39

Center Aisle
10/~==~;::::::::===~==.J
SECTION SHOWING AIR DUCTS ON SIDES
OF CENTER AISLE AND AIR OUTLET
INSTALLED UNDER SEAT
23
5
1 Heater Line Shut-off Valves - In Battery
ComtBrtment
2 Heater Return Line
3 Heater Supply Line
4 Air Outlets - Under Seats
5 Left Side Air Duct
6 Left Side Heater Core
7 Air Line From Pressure Regulating Valve
8 High Temperature Overrule Thermostat
9 Grad-u-stat
10 Right Side Air Duct
11 Right Side Heater Core
12 Heater Core Drain Cocks - In Forward
Baggage ComtBrtment
figure JO-Schematic Layout of Heater Pipes, Hot Air Ducts, and Controls
13 Water Modulation Valve
14 Left Side Heater Motor and Blower
15 Left Side Heater Core Vent Cock
16 Right Side Heater Core Vent Cock
17 Right Side Heater Motor and Blower
18 Driver's Heater Line Drain Cocks -
Under Vehicle
19 Driver's Heater Control Valve
20 Driver's Heater
21 Driver's Heater Bleed Valve
22 Dash Ventilator
23 Seat
TP-7078
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