PERIODIC INSPECTIONS
Careful attention to the fluid level and connections for the electronic and hydraulic
circuits is very important.
For easier inspection, the transmission should be kept clean. Make regular periodic
inspections and check:
• For loose bolts.
• For leaking fluid around fittings, lines, and transmission openings.
• The condition of the electrical harnesses.
• The engine cooling system for presence of transmission fluid and check the
transmission fluid for presence of coolant, which would indicate a faulty oil
cooler.
• The breather (refer to Figure 3 through Figure 6) to make sure it is clean
and free from dirt or debris.
Report any abnormal condition to service management.
PREVENT MAJOR PROBLEMS
Help Allison 4
th
Generation Controls or WTEC III Controls oversee the operation
of the transmission. Minor problems can be kept from becoming major problems
if an Allison Transmission distributor or dealer is notified when one of these
conditions occur:
• Shifting feels odd.
• Transmission leaks fluid.
• Unusual transmission-related sounds (changes in sound caused by normal
engine thermostatic fan cycling, while climbing a long grade with a heavy
load, have been mistaken for transmission-related sounds).
• CHECK TRANS light comes on frequently.
CARE AND MAINTENANCE
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