1-24.
TM 5-3805-262-20
7. FLOOD LIGHTS SWITCH.
Applies 24 Vdc power to front and rear flood lights causing
them to turn on. Switch is operable only when Vehicle Lights Switch is in SER. DRIVE
p o s i t i o n.
8. 5 AMPERE CIRCUIT BREAKERS.
R e s e t a b l e c i r c u i t b r e a k e r s . P r e s s b u t t o n t o r e s e t.
Top circuit breaker protects return-to-dig and bucket height control circuits.
B o t t o m c i r c u i t b r e a k e r p r o t e c t s a u x i l i a r y s t e e r i n g c i r c u i t , i n s t r u m e n t p a n el
c l u s t e r, voltmeter, cab relay solenoid, electric fuel pump, and air pressure switch
and warning alarm.
9.
10
f r o n t
AMPERE CIRCUIT
and rear flood
BREAKER.
Mounted on underside of instrument
lamps.
p a n e l. P r o t e c t s
1. TRANSMISSION.
Three speed transmission:
two in forward and one in reverse. Hy-
draulic oil lubricates and cools transmission components, apply clutches, and turn
torque converter turbines. Its major components are control valve including linkage,
oil pump including filter, torque converter, free wheel clutch, reverse clutch, low.
clutch, high clutch, and necessary gears and shafts to send motion to output shaft
of transmission.
2. CONTROL VALVE AND LINKAGE.
Control valve directs hydraulic oil under pressure to
desired directional and speed clutch. Directional and speed control valves connected
by push-pull type cables to operator’s transmission direction and speed selector
c o n t r o l .
3. OIL PUMP AND FILTER.
Draws hydraulic oil from transmission sump through oil
suction screen and directs oil through external filter to transmission control
valve. Oil enters transmission control valve at main pressure regulating valve.
Filter removes impurities from oil.
4. TRANSMISSION COOLER. Part of radiator. B u i l t i n t o l o w e r p o r t i o n o f r a d i a t o r . I n-
eludes oil sampling valve used to drain a sample of transmission oil. Sample oil
analyzed in laboratory for wear particles. This helps determine extent of wear in
transmission. Transmission oil routed to and from radiator oil cooler through hoses.
5. FRONT DRIVE SHAFT.
Connected between center drive shaft and front axle.
Connected to front axle yoke by universal joint and to center drive shaft by a yoke
with internal splines. Rear of front drive shaft supported by a bearing.
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