SECTION II
CONTROLS AND OPERATION
Push this knob in and pull out the Maxibrake control knob
(item 17) if it becomes necessary to use the air in the
emergency air tank to release the Maxibrake.
The carrier will have no brakae, except the Maxi-
brakes, which are controlled by the Maxibrake con-
trol valve. Never move the carrier farther than is ab-
solutely necessary under these conditions, and avoid
steep grades. Make certain that this knob is pulled out
at all time during normal operation.
17. MAXIBRAKE CONTROL VALVE. Pull this knob out
to release the Maxibrakes. Push this knob in to vent air
Figure 2-4. Emergency Engine Shutoff
from the Maxibrake chambers and apply the Maxibrakes.
This control will return to the applied position automati-
cally if pressure in the air system drops below 28 psi (1.93
BARS).
Under no circumstances should the circuit breakers
be prevented from tripping by any means. Overloaded
18. AIR PRESSURE GAUGE. This gauge shows the pres-
electrical circuits can cause extensive damage to the
sure of the air in the air system of the machine. In normal
machine and/or could cause injury to personnel.
operation, the pressure reading on this gauge should range
between 105 and 120 psi (7.2 - 8.2 BARS).
22. THROTTLE SELECTOR VALVE. This valve transfers
control of the throttle from the lower to the upper. Place
19. LOW AIR PRESSURE LIGHT. When illuminated, this
the lever in the LOWER position when driving the carrier.
lamp indicates that the pressure in the air system is below
Place the lever in the UPPER position when operating the
the normal safe operating level. Do not operate the ma-
upper.
chine when this Iight is lit.
23. MAIN TRANSMISSION SHIFT LEVER. This lever is
20. EMERGENCY ENGINE SHUTOFF CONTROL. Pull
used to select the gears in the main transmission.
this handle out if the engine continues to run after the
Engine Stop button (item 7) is depressad or if an abnormal
24. AUXILIARY TRANSMISSION SHIFT LEVER. This
condition should arise.
lever is used to select the gears in the auxiliary transmission.
The auxiliary transmission should be kept in the lowest gear
range that will allow the machine to reach the desired maxi-
NOTE
mum speed. Maintaining the auxiliary transmission in a
If the engine is shut down using the Emergency
higher than required range could cause gear tooth failure,
Engine Shutoff Control, the butterfly valve in the
due to excessive torque from the main transmission.
intake manifold must be manually reset (see Figure
26. OUTRIGGER/STEERING SELECTOR VALVE. This
valve transfers hydraulic fluid from the power steering pump
to either the power steering system, or the outrigger sys-
21. CIRCUIT BREAKERS. The function of the circuit
tem. Push the knob in and engage the latch to direct fluid
breakers is to protect the various electrical circuits of the
to the power steering system. Pull the knob out to direct
machine. The circuit which is protected by each circuit
fluid to the outrigger system.
breaker is marked on the decal above the circuit brakers.
NOTE
An electrical overload will cause the circuit breaker button
to move outward, indicating that the circuit breaker has
The outrigger/steering selector valve is not furnished
when the machine is equipped with the optional car-
tripped. Reset the circuit breaker by depressing the button.
rier remote control system. The transfer from out-
If the same circuit breaker should trip shortly after it is
rigger to steering is done automatically when the
reset, check the circuit protected by the circuit breaker for
outrigger master switch is in the OFF position.
the cause of the overload.
2-4
