Allison Transmission 1000 & 2000 Product Families 4th Controls MT4007EN Troubleshooting Manual

a. Manual Fluid Check Procedure. Clean all dirt from around the top of the fluid fill tube before removing the dipstick. Do not allow dirt or foreign matter to enter the transmission. Dirt or foreign matter in the hydraulic system may cause undue wear of transmission parts, make valves stick, and clog passages. Check the fluid level using the following procedure and report any abnormal fluid levels to your service management. b. Cold Check Procedure. The purpose of the cold check is to determine if the transmission has enough fluid to be operated safely until a hot check can be made.

CAUTION: The fluid level rises as fluid temperature increases. DO NOT fill above the “COLD CHECK” band if the transmission fluid is below normal operating temperatures.

1. Park vehicle as follows: a. For vehicles containing 1000 and 2000 Product Families transmissions with park pawl: (1) Bring the vehicle to a complete stop on a level surface using the service brake.

(2) Make sure that the engine is at low idle rpm.

(3) Put the transmission in P (Park).

(4) If a parking brake is present, apply the parking brake. Make sure that the parking brake is properly engaged.

(5) Engage the P (Park) range by slowly releasing the service brake.

(6) Apply the emergency brake, if present, and make sure it is properly engaged.

(7) Chock the wheels and take any other steps necessary to keep the vehicle from moving. b. For vehicles containing 2000 Product Family transmissions with auto­apply parking brakes: (1) Bring the vehicle to a complete stop on a level surface using the service brake.

(2) Make sure that the engine is at low idle rpm.

(3) Put the transmission in PB (Auto­Apply Parking Brake).

Make sure that the parking brake is properly engaged.

(4) Apply the emergency brake, if present, and make sure it is properly engaged.

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