Challenger Terra Gator 3244 Chassis. Manual

627333-A

3-1

Transmission Service Manual

TRANSMISSION SERVICE MANUAL

TRANSMISSION SERVICE
INFORMATION

Information for the Caterpillar transmission used in this

machine must be procured through an authorized

Caterpillar transmission distributor.

Oil Type

Check Oil level

Check the oil level only when the oil is warm. See

below for the correct procedure for checking the oil

level

WARNING: Hot oil and components can

cause personal injury.

Do not allow hot oil or components to

contact skin.

NOTE: Perform this procedure on a smooth horizontal

surface for the most accurate reading.

1. Allow the engine to run for a period of two minutes

at LOW IDLE position with the transmission in the

park position;

2. Ensure that the oil level is between the ADD and

FULL marks of dipstick;

FIG. 1: Transmission oil filler cap (1), transmission

dipstick (2).

3. If necessary, add transmission oil;

a. Remove transmission oil filler cap;

b. Add the correct type of transmission oil;

c. Clean transmission oil filler cap. Install

transmission oil filler cap.

4. Stop the engine;

5. Visually inspect the transmission for leaks. Check

for leaks under the transmission and around the

drain plug.

Identification

Initial Fill

Recommended

Capacity

Transmission

AGCO 821 XL or Equivalent

Specification, J20C

Transmission and Hydraulic oil

10W30 API class SF/CC

56,7 L (15 Gall)

FIG. 1

Q000030S

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Transmission and Solenoids

TRANSMISSION AND SOLENOIDS

THEORY OF OPERATION

The transmission is a 16-speed forward and 3-speed

reverse powershift transmission with electronically

controlled hydraulic power assisted shifting. A TCU

(Transmission Control Unit) sends 12 volt power to

electric coils on the front of the transmission to change

gear ratios. There are a total of nine clutches, which

engage in different combinations of two determining the

speed of the output shaft.

The transmission is coupled to the engine through a

rubber damper to absorb some of the shock between

the engine, the transmission and the propschaft.

The electronic control allows the TCU to monitor

various functions such as throttle position, input speed,

output speed, temperature and thus control shifting as

well as display error codes.

A charge pump mounted at the left top of the

transmission provides the hydraulic flow for the

transmission. There is an auxiliary output drive on the

back of the charge pump that can be used to drive

various hydraulic pumps for the various systems

mounted to the chassis. There is a second auxiliary

drive on the top right side of the transmission for

systems requiring another hydraulic pump.

Transmission and Solenoids

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TRANSMISSION COMPONENTS

Location transmission componenten

1. PTO;

2. Charge Pump;

3. Fill Tube;

4. Dipstick;

5. Solenoids;

6. Screen Filter;

7. Output Shaft;

8. 4WD Valve.

FIG. 1

Q000061S

Challenger Terra Gator 3244 Chassis. Manual - part 22