Isuzu Tilt Slide FYJ2000 Instruction Manual page 438

7-110
SERVICE AND MAINTENANCE
Operating Temperatures
Transmissions must not be operated at temperatures above 121°C (250°F). Operation
at temperatures above 121°C (250°F) causes loaded gear tooth temperatures to
exceed 177°C (350°F) which will ultimately destroy the heat treatment of the gears.
If the elevated temperature is associated with an unusual operating condition that
will recur, a cooler should be added, or the capacity of the existing cooling system
increased.
The following conditions in any combination can cause operating temperatures over
121°C (250°F).
• Operating consistently at high loads / slower speeds
• High ambient temperatures
• Restricted air flow around transmission
• Exhaust system too close to the transmission
• High horsepower operation
• Use of engine retarder
Check Transmission Oil Level
ADVICE
• Before checking level, engine must
be idling in neutral for at least 2
minutes and lubricant temperature
must be between 15.5 and 48.8°C
(60 and 120°F).
Check lubricant level using the fill hole or
sight-glass usually located on the right side
of the transmission.
Check fluid levels and inspect for leaks at
regular PM maintenance intervals, not to
exceed 20,000 km (12,000 miles).
1. Turn engine off.
2. Remove fill hole plug.
3. Lubricant must be level with the hole.