1 minute read
3–5 Checking Plugs And Openings
from Allison MT3190EN 1000 Series™ 2000 Series™ 2000 MH Series 2400 Series™ S Mechanic's Tips Manual
Carefully check all sides and the bottom of the transmission for loose or missing plugs.
a. Main Pressure Tap Plug. Check that 0.4375–20 UNF-2A pressure plug is tightened to 10–13 N·m (7–10 lb ft).
b. Fluid Drain Plug. Check that the drain plug is tightened to 25–32 N·m (18–24 lb ft).
c. Tachograph Plug. If present, tighten to 60–67 N·m (44–49 lb ft).
d. Cleanliness. Check the openings into which the cooler lines connect for deformities or obstructions. Check the transmission electrical connectors for cleanliness. Clean electrical connections with an LPS cleaner only (refer to Service Information Letter 17-TR-94).
