SRT45 Off-Highway Truck
3-32
Safety, Operation and Maintenance Manual
The transmission fault indicator will come
'On' during operation if the ECU has detected
a minor fault in an electrical component or
abnormal transmission oil temperature. If
transmission oil temperature is too high, stop
the machine, select Neutral (N), and increase
engine speed to allow a greater flow of oil
to the oil cooler until oil temperature drops
to normal operating range. In most cases, a
minor fault triggering the transmission fault
indicator will not prevent normal operation
from continuing but, depending on the nature
of the problem, the ECU could take action to
protect the transmission from damage, such
as preventing operation in high gear ranges. If
the ' check trans ' warning indicator comes on,
have the problem diagnosed and corrected at
the earliest opportunity.
WARNING
D o n o t o p e r a t e e n g i n e f o r m o r e
than 30 seconds at full throttle with
transmission in gear and output stalled
as this will result in severe overheat
damage to the transmission.
3.13.3 General Transmission Operation
Watch for wide deviations from normal
readings on the transmission oil
temperature gauge during truck operation. If
the transmission oil
temperature gauge, on vehicles which do not
have a transmission retarder fitted, shows
oil temperature consistently rising above the
green zone (65°C - 135°C; 149°F - 275°F)
under normal operating conditions; check for
external causes. If none are evident shift to
Neutral (N) and operate the engine at 1200 -
1500 r/min. If the transmission oil temperature
does not decrease into the green zone within
2 or 3 minutes, the cause of the overheating
Fig 3.18
MODE
R
N
D
5
4
3
2
1
R
1
2
3
4
Controls and Operating
