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Allison Transmission AT 540 User Manual

Allison Transmission AT 540
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13
2–1. DRAINING TRANSMISSION
Remove the drain plug from the pan. Disconnect the transmission fill tube
from the pan only if required. Remove the fill tube completely if it interferes
with transmission removal.
Examine the drained fluid for evidence of contamination (refer to
Paragraph 1–9).
Install the drain plug and tighten it to 15–20 lb ft (20–27 N·m).
Disconnect all hydraulic lines from the transmission. Remove the lines from
the vehicle if they interfere with transmission removal. Cap or plug all
hydraulic lines and openings to prevent dirt from entering the hydraulic
system.
2–2. DISCONNECTING CONTROLS
Disconnect the controls from the transmission and position them so they do not
interfere with transmission removal.
Disconnect all linkage or cables for shifting, shift modulation, parking brake,
and speedometer. Remove the mechanical or electrical modulator control and
plug the opening in the transmission.
Disconnect the vacuum hose from the vacuum modulator (if used). Remove
the vacuum modulator and plug the opening in the transmission.
Disconnect the power takeoff from its driven equipment. Disconnect the PTO
controls. Remove the PTO completely if it will interfere with transmission
removal. Cover the PTO opening.
Disconnect any electrical leads to the retarder valve body or any sensors or
other equipment on the transmission.
NOTE: A significant amount of fluid may drain from the hydraulic
lines when they are disconnected from the transmission.
REMOVING
TRANSMISSION
SECTION
II

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Allison Transmission AT 540 Specifications

General IconGeneral
BrandAllison Transmission
ModelAT 540
CategoryMicrophone system
LanguageEnglish

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