Allison Transmission Emergency Vehicle Series

CAUTION: Transmission fluid and filters must be changed whenever
there is evidence of dirt or a high temperature condition. A high
temperature condition is indicated when the transmission fluid is
discolored, has a strong odor, or has exceeded oil analysis limits.
Fluid Analysis
Transmission protection and fluid change intervals may be optimized by
monitoring fluid oxidation according to the tests and limits shown in the Fluid
Oxidation Measurement Limits table. Consult your local telephone directory for
fluid analysis firms. To be sure of consistent and accurate fluid analysis, use only
one fluid analysis firm. Refer to Technician’s Guide for Automatic Transmission
Fluid, GN2055EN, for additional information.
Fluid Oxidation Measurement Limits
Test Limit
Viscosity ±25 percent change from new fluid
Total Acid Number (TAN) +3.0
* change from new fluid
Solids 2 percent by volume
* mg of potassium hydroxide (KOH) to neutralize a gram of fluid.
Refill Transmission. 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 FLUID LEVEL CHECK USING
PUSHBUTTON OR LEVER SHIFT SELECTOR section of this manual.
NOTE: Quantities listed are approximations and do not include external
lines and cooler hose.
Transmission Fluid Capacity
Transmission Sump
Initial Fill Refill
Liters Quarts Liters Quarts
3000 Product
Family
4inch27291819
2inch25261617
4000 Product
Family
*
4inch48514042
2inch41433334
*
Subtract 2.8 Liters (3 Quarts) for transmissions without PTO.
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