Download - Allison Transmissions

INSTALLING
TRANSMISSION
INTO VEHICLE
S ECTION
V
5–1. HANDLING
a. Preventing Damage. Carefully handle the transmission to prevent damage to
components in the installation path.
b. Control of Transmission Movements. Use a hoist or transmission jack that al-
lows precise control of transmission movements during installation.
5–2. MOUNTING TO ENGINE
Use the following procedure to mount the transmission to the engine:
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• Align one of the flexplate’s bolt holes with the access opening at the
front of the engine flywheel housing.
Lubricate the center pilot boss with molybdenum disulfide grease (Molycote
G, or equivalent).
Install a headless guide bolt into one of the flex disk bolt holes in the flexplate
adapter (refer to Figure 4–3). Align the guide bolt with the flexplate hole at
the access opening.
Push the transmission toward the engine while guiding the pilot boss on the
flywheel into the flexplate hub (adapter), and the guide bolt into the hole on
the flexplate.
Seat the transmission squarely against the engine flywheel housing — no
force is required. If interference is encountered, move the transmission away
from the engine and investigate the cause.
Align the bolts holes in the converter housing with those in the engine
flywheel housing.
Install all transmission-to-engine bolts finger tight.
CAUTION: The entire converter housing circumference must be
flush against the engine flywheel housing before tightening any bolts.
DO NOT use the bolts to seat the housing.
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