TM-9-2320-260-10
TRUCK, 5-TON, 6X6, M809 SERIES (DIESEL)
TECHNICAL MANUAL; OPERATOR'S MANUAL
JUNE 1985
TM-9-2320-260-10 - Page 49 of 411
2-4
Change 4
TM 9-2320-260-10
K E Y
ITEM AND FUNCTION
1
Primer pressure gage
indicates pressure delivered by hand primer pump during cold
weather starting and used when purging fuel system of air.
2
Preheater indicator lamp
lights when preheater switch is placed in ON position.
3
Preheater switch,
when set to START position, sends electrical power to engine preheater
(used for cold weather starting).
4
Battery switch
activates or deactivates all electrical circuits except horns, lights, manifold
heaters, and arctic heaters.
5
Fuel gage switch (M817 and M818)
when in “L” position, fuel gage shows left tank fuel
level. When in “R” position, fuel gage shows right tank fuel level.
6
Fording valve control handle
closes crankcase ventilating system during fording operations
when pulled out. Opens engine crankcase ventilating system during normal operations when
pushed in (kit only).
7
A i rc l e a n e r f i l t e ri n d i c a t o r
when engine air cleaner filter needs cleaning, red band rises and
locks to top of indicator window.
8
Floodlight control switch (M816, M819, and M821),
when turned to ON position, provides
electrical power to floodlight switches. When turned to OFF position, cuts electrical power
to floodlight switches.
9
Electric brake lock switch (M816, M819, M812, and M821)
locks vehicle service brakes
in hold position.
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