TM 9-2350-238-10
WINTERIZATION KIT – CONTINUED
CAB HEATER OPERATION–CONTINUED
NOTE
If light (4) does not come on
within 5 minutes, notify unit
maintenance personnel.
7 Position HI-LO switch (6) to desired rate
of heating.
8 When slip ring is warm, open air deflector
(3) to allow heated air into cab for person-
nel comfort.
IMMERSION HEATER OPERATION
Do not operate immersion
heater from vehicle slave recep-
tacle when engine is not run-
ning. Batteries are discharged
very rapidly by immersion
heater.
1 Start the engine.
2 Connect slave cable (1) (item 8, appx B,
Sec. Ill) between cab slave receptacle (2)
and vehicle slave receptacle (3) or an ex-
ternal 24-volt DC power source. immer-
sion heater will be on and start warming
hydraulic oil.
Do not engage hydraulic pump
clutch switch when temperature
is
below
–25°F
(–32°C)
until
hydraulic oil has been warmed.
3 Allow hydraulic oil to warm, Inside wall of
cab below hydraulic oil level gauge will be
warm to your hand.
4 Actuate hydraulic system (page 2-67). If
filter bypass light comes on, reduce
engine speed until light goes out, or turn
off hydraulic pump clutch switch and
allow immersion heater to continue to
operate.
9 To turn heater off, set heater START-
RUN switch (5) to OFF. Light will stay
on until heater is purged. Blower will
operate for approximately 1 minute after
heater is turned off.
10 Close fuel shutoff cock (2).
11 Set vehicle master switch to OFF.
5 Repeat steps 3 and 4 until hydraulic pump
clutch is successfully engaged and filter
bypass light remains out. Pull hand throt-
tle out slowly, making sure bypass light
remains out, until engine speed reaches
1350 rpm.
6 Remove slave cable (1). Immersion heater
will be off and will stop heating hydraulic
oil. Hydraulic oil will be heated as long as
hydraulic system is in operation.
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