Issue 1
Page 28 of 34
Initial Issue 19 December 2017
Engineering Manager
20 Earth Bonding Straps
Earth bonding straps are fitted on the machine between the chassis and rear rail axle and the chassis
to blade.
Earth bonding straps must be in place at all times and securely fastened.
Replace immediately if any signs have burning or damage.
Check impedance levels after refitting any straps.
Figure 13 - Earth Bonding Straps
21 Emergency Recovery
If your machine breaks down in such a position that it is likely to obstruct an adjacent line or cause an
accident or damage to the railway infrastructure or any other vehicle, it is important that the machine
is placed in a safe position as soon as possible. For this reason the Komatsu track type tractor has
been fitted with an auxiliary power system and a tow bar by which another machine can tow it to
safety.
Instructions on how the auxiliary system works are described in a separate section of your operators
handbook; you must make a point of reading and understanding the procedures so that in the event of
a machine failure you are able to put the machine in a safe position.
The main points are:
Connect your machine and recovery vehicle together with the approved tow bar.
Only release the park brake of the failed machine once the tow bar has been connected to the
recovery vehicle otherwise the machine might run away.
Do not remain in the cab of the machine being towed.
Ensure that towing is carried out at a slow speed approximately 2 MPH as the recovery vehicle
has to brake for both vehicles, at a higher speed braking distance would be greatly increased.