Thomas ProTough 300 Screener, Owner'S/Operator'S Manual

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39
4.3 DAILY SERVICE
4.3G Brake System, Trailing Axle
(continued)
If the machine rolls freely, the self con-
tained 12 volt battery may need to be
charged, the electrical system may be dam-
aged or other brake service is needed.
Check the battery charge first. The bat-
tery is located behind and to the left of the
engine and hydraulic controls (S0095).
Verify electrical wiring integrity and
continuity. See section 4.3H for electrical
schematic.
Have the electrically activated brake
system inspected by an authorized service
technician.
If the brakes work properly, push the
plunger back into position (fig. S0094).
Do not transport this machine without
the braking system functioning proper-
ly.
WARNING
S0167
Electric brake system self
contained battery location
Do not expose batteries to open flame
or spark. Do not expose the battery box
to solvents or adhesives.
WARNING
S0094
Push
Brake hub. Authorized
technician only.
S0024
The units self contained battery nor-
mally charges through the tow vehi-
cles wiring harness. The battery must
be recharged, if left idle, every 6
months.
IMPORTANT
38
4.3 DAILY SERVICE
4.3G Brake System, Trailing Axle
This machine is equipped with self
adjusting 12 volt electrically activated
brakes.
For safety, the system has its own 12
volt battery source to activate the wheel
brakes whenever the tethered break away
switch has been activated. This means, if
the machine has unhitched from the tow
vehicle, the brakes will activate automati-
cally, if the tethered break away switch has
been secured to the tow vehicle and the 12
volt battery source is operative. Fasten
cable to tow vehicle securely. Be certain
that the cable has no restrictions, and will
not be restricted in case of trailer break-
away.
Before transporting this machine, per-
form the following checks:
Ensure the battery box is secure before
transporting (S0095, next page). The bat-
tery box is located in the engine compart-
ment.
Pull out the plunger on the break away
switch by pulling on the tether cable (fig.
S0092, S0093). Try to move the machine
with a tow vehicle. The wheels should not
roll freely.
Fasten cable to tow vehicle securely. Be
certain that the cable has no restrictions,
and will not be restricted in case of trailer
breakaway.
S0092
S0093
Tether
Plunger
Pull
Plunger
Switch
If the battery back up system is not
functioning, the wheel brakes will not
activate in an emergency situation such
as the machine coming unhitched from
the tow vehicle.
WARNING
Tethered break away switch and
trailer harness connector
S0045
Tethered break away switch and
trailer harness connector
S0032
4. MAINTENANCE 4. MAINTENANCE