Allison Transmission 3000

CAUTION: Do not use the bolts to draw the filter covers to the control
module. Do not use an impact wrench to tighten the bolts. Using an
impact wrench to tighten the bolts may cause stripped threads and
expensive parts replacement. Use a torque wrench to tighten the bolts.
• Install six bolts into each cover assembly and tighten to 51–61 N•m
(38–45 lb ft).
• Replace the drain plug O-ring. Install the drain plug and tighten to
25–32 N•m (18–25 lb ft).
c. Refill Transmission. Refer to Table 2–9 for fluid refill quantities. The amount
of refill fluid is less than the amount used for the initial fill. Fluid remains in the
external circuits and transmission cavities after draining the transmission.
After refill, check the fluid level using the procedure described in Section 2–3,
TRANSMISSION FLUID TEST, Paragraph b. Manual Fluid Test Procedure.
Table 2–9. Transmission Fluid Capacity
Initial Fill* Refill*
Transmission Sump Liters Quarts Liters Quarts
3000 Product Family
4 inch 27 29 18 19
2 inch 25 26 16 17
4000 Product Family
4 inch
† 45 48 37 39
2 inch† 38 40 30 31
* Approximate quantities, do not include external lines and cooler hose.
† Add 2.8 liters (3 quarts) for transmissions with PTO.
2–9. FLUID LEAK DIAGNOSIS
a. Finding the Leak.
1. Identify the fluid. Determine whether the fluid is:
• Engine oil
• Automatic transmission fluid
• Hydraulic fluid from a particular vehicle system
2. Operate the vehicle to reach normal operating temperature and park the
vehicle. Inspect the vehicle to identify the source of the leak. Refer to the
following list for possible points of transmission fluid leaks and their
causes.
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