3–8 Copyright © 1996 General Motors Corp.
AT 500, 1500 SERIES AUTOMATIC TRANSMISSIONS
(14) Refer to Table 3–2 and determine when
the next fluid and filter changes will be required. If la-
bels are available (Figure 3–6), fill in the appropriate
dates and affix the labels in a conspicuous location in
the vehicle.
3–11. BREATHER
(1) The breather is located at the top of the
transmission housing. It serves to prevent pressure
buildup within the transmission and must be kept
clean and the passage open. The prevalence of dust
and dirt will determine the frequency at which the
breather requires cleaning. Use care when cleaning the
transmission. Spraying steam, water, or cleaning solu-
tion directly at the breather can force the water or solu-
tion into the transmission.
(2) Earlier model breathers should be
equipped with a neoprene shroud (Figure 3–7). If the
breather is not so equipped or if the present shroud is
damaged, install a new shroud.
Figure 3–5. Measuring the Length of Oil Pan Boss to Identify Torque Requirements
Figure 3–6. Fluid and Filter Change Reminder Labels
A
Dimension A
0.570–0.580 in. (14.48–14.73 mm)
0.670–0.680 in. (17.02–17.27 mm)
NOTE: Except for Dimension A, the oil pan in Figure 3–5 does not represent all AT oil pan configurations.
Torque Specifications
65–75 lb ft (88–102 N·m)
90–100 lb ft (122–136 N·m)
V03098
Next Transmission
Fluid Change is Due
Allison Transmission
Miles/km
or
Date
Next Transmission Internal
Filter Change is Due
Allison Transmission
Miles/km
V02883
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