KC-219

Content creation stages KC-219
Oil In Control Housing Or TECU -- AMT-F
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8/3/2020
Internal Content
IMPORTANT
If there is oil leakage from the gearbox vents or a report
of 'smoke' or 'oil mist' during shifting, gear box testing or
PTO operations accompanied with excessive air leakage
during these operations:
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Article CBR-343 for Mack and CBR-338 for Volvo should be
referenced.
If there is no air leakage or only slight air leakage from vents
during countershaft brake testing and oil is found in the control
housing:
1. Remove the gearbox from the vehicle.
2. Remove the countershaft brake air line.
3. Check for the presence of oil in the air line or check the exhaust port
on the solenoid block for the presensce of oil.
If oil is found in the countershaft brake airline or the solenoid block
then repair or replace the countershaft brake as needed. Oil in the
solenoid block does not a ect the operation and can be cleaned and
reused following the instructions below.
The clutches in the countershaft brake must also be replaced.
The Countershaft brake assembly is not available as an assembly.
Order parts as needed. Repair instructions are availiable in IMPACT
for the countershaft brake piston assembly.
Clean the oil from the inside of the control housing and from the
TECU with a clean cloth and blow it dry with compressed air. Cleaning
sprays like brake cleaner are not recommended by WABCO for
cleaning the electrical components like the solenoids harnesses and
circuit boards. Unplug the connectors from the circuit board and
clean the oil from inside the connections with compressed air and
wipe o any residue. Clean all the air passages for the countershaft
brake and reassemble the unit.
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NOTE: Bench test assembly before reinstallation.
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Tags
K90500425
I-SHIFT
MDRIVE HD
MDRIVE
AMT-F
OIL IN CONTROL HOUSING
OIL CONTAMINATION IN CONTROL HOUSING
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