Terex TA300 - Procedures for Moving a Disabled Machine

Moving a Disabled Machine
7-3
Moving a Disabled Machine
Any unusual power train noises noted while operating the machine
should be reported to those responsible for maintenance. Should the
power train, hydraulic or electrical systems fail, the machine should
be stopped and shut down immediately until suitable repairs can be
made. If the failure is in the power train and the machine must be
moved to a service area or workshop to make required repairs, it is
advisable to carry out the following procedures to prevent any possi-
ble additional damage, which may be caused by the wheels turning
the power train as the machine is driven or towed.
If the transmission or drop box is at fault, disconnect the drive lines to
the axles and dropbox before moving the machine.
If a differential or planetary is at fault, carry out the following proce-
dure for the component concerned: Disconnect drive lines, remove
planetary covers and remove the axle shafts. Remove the pinion
gears from their covers. Replace the planetary pins in the covers, and
refit the planetary covers on the drive wheels to retain lubricant and
prevent ingress of dirt.
If possible, start the engine to provide the required hydraulic pressure
for steering and braking. If the nature of the trouble prevents engine
operation, repairs must be made on the site of the breakdown, or spe-
cial arrangements made for towing the machine safely to the repair
area without braking and steering power.
If the parking brake must be released, but the engine cannot be oper-
ated to provide the required hydraulic pressure or if there is elecrical
failure, the brake can be released manually by following this proce-
dure:
Block all wheels securely. Turn the hex-head on the parking brake
actuator anticlockwise until the brake pads are free from the disc.
When the hydraulic system is repaired, return the actuator to its origi-
nal position by turning the hex-head fully clockwise.
Connect a suitable towing bar to one of the lugs on the tractor frame
of the disabled machine and reverse another machine, in a straight
and in-line manoeuvre, towards the disabled machine. Connect the
opposite end of the towing bar to the towing pin of the recovery
machine and ensure that it is securely locked.
NOTICE: An alternative method of towing a disabled machine is by
connecting an A-Frame arrangement to the lugs on the tractor frame
of the disabled machine and the towing pin of the recovery machine.
Removing the drive line between
the parking brake and the rear
axles or removing the axle
shafts and planetary covers or
pinion gears from the axles will
make the parking brake ineffec-
tive.
Uncontrolled machine move-
ment hazard. There is no
mechanical connection between
the machine wheels and the
engine . Before releasing the
parking brake, make sure the
machine wheels are secured
with chock blocks to prevent or
restrict unexpected machine
movement.
When moving the machine with
insufficient hydraulic pressure,
for safe braking and steering,
use extreme caution to ensure
personnel and property safety.
Make sure the parking brake
actuator is returned to its origi-
nal position, and the parking
brake is operating correctly,
before removing the chock
Never allow riders on a machine being towed without sufficient
hydraulic pressure for safe braking.
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