Challenger Terra Gator 3244 Chassis. Manual - part 27

627333-A  

3-21

Transmission and Solenoids

Front view Transmission

1.   Input Shaft;

7.   Intermediate Shaft;

13.   Ouput Shaft;

18.   Transfer Shaft;

19. Reverse Shaft

Power flow for reverse gears only involves the clutches

on the shaft:

•

Reverse Shaft (19);

•

Output Shaft (13).

The different solenoids resembles the different clutches.

When a combination of solenoids is engaged, the

specific gear will be set.

Each gear has its own combination of solenoids. No

more than two clutches are engaged at the time. Also,

no more than one clutch is engaged at the time on any

shaft. The different combinations of solenoids is

regulated by the TCU.

For the reverse gear, input shaft (1) is used only to

transfer power flow through gear (10). For reverse

gears, intermediate shaft (7) is used only to transfer

power flow through gears (8), (11) and (15). This gear

are permanently splinted to the shafts. The gears will

always rotate with the shaft.

FIG. 20

Q000062S

18

13

7

19

1

Transmission and Solenoids

3-22

627333-A  

Transmission Clutch Engagement Engine RPM at 2100

Gear

Reverse 

Shaft

Input Shaft

Intermediate 

Shaft

Output 

Shaft

Reduction

Third Gear (Reverse)

A

-

-

H

3.857

Second Gear (Reverse)

A

-

-

B

4.343

First Gear (Reverse)

A

-

-

G

10.553

Neutral

-

-

-

J

-

First Gear

-

C

-

G

8.442

Second Gear

-

D

-

G

6.648

Third Gear

-

-

E

G

5.253

Fourth Gear

-

-

F

G

4.137

Fifth Gear

-

C

-

B

3.747

Sixth Gear

-

C

-

H

3.086

Seventh Gear

-

D

-

B

2.736

Eighth Gear

-

D

-

H

2.430

Ninth Gear

-

-

E

B

2.162

Tenth Gear

-

-

E

H

1.920

Eleventh Gear

-

-

F

B

1.702

Twelfth Gear

-

-

F

H

1.512

Thirteenth Gear

-

C

-

J

1.270

Foureenth Gear

-

D

-

J

1.000

Fifteenth Gear

-

-

E

J

0.790

Sixteenth Gear

-

-

F

J

0.622

627333-A  

3-23

Testing and Adjusting

TESTING AND ADJUSTING

RELIEF VALVE

FIG. 1:

m

WARNING: Escaping fluid under

pressure, even a pinhole size leak, can

penetrate body tissue, causing serious

injury, and possible death. If fluid is

injected into your skin, it must be treated

immediately by a doctor familiar with this

of injury.

Always use a board or cardboard when

checking for a leak.

m

WARNING: Personal injury can result

form hydraulic oil pressure and hot oil.

Hydraulic oil pressure can remain in the

hydraulic system after the engine has

been stopped. Serious injury can be

caused if this pressure is not released

before any service is done on the

hydraulic system.

Make sure all of the attachments have

been lowered, oil is cool before removing

any components or lines. Remove the oil

filler cap only when the engine is

stopped, and the filler cap is cool enough

to touch with your bare hand.

IMPORTANT: Care must be taken to ensure that fluids

are contained during performance of

inspection, maintenance, testing, adjusting

and repair of the product. Be prepared to

collect the fluid with suitable containers before

opening any compartment or disassembling

any component containing fluids.

Introduction

The transmission hydraulic control relief valve regulates

the pressure of the oil that is used to control the

transmission system and the oil that is used for the

torque converter.

Required Tools

FIG. 2: The tool to check the oil pressure contains a:

•

Pressure Gauge, to read the pressure;

•

Fitting, to connect the pressure gauge to the hose;

•

Quick Connect Coupler, to connect the pressure

gauge to the transmission.

•

Hose, to allow make a distance between pressure

gauge and the measure point.

FIG. 1

Q000119S

FIG. 2

Q000046S

Testing and Adjusting

3-24

627333-A  

Testing Procedure

FIG. 3: Test port for the transmission hydraulic control.

The relief pressure for the transmission hydraulic

control system can be measured at pressure tap (1) on

the transmission hydraulic control relief valve.

1. Install tooling (A) on pressure tap (1);

2. Start the engine. Warm the oil until the oil reaches

60°C (140°F);

3. Operate the engine at high idle. Observe the

pressure gauge. The relief pressure for the

transmission hydraulic control must be within 2100

kPa (305 psi);

4. If the pressure is at the specified level, go to 5. If

the pressure is not at the specified level, go to

“Adjusting Procedure”;

5. Shut off the engine. Remove tooling (A) from

pressure tap (1).

Adjusting Procedure

FIG. 4: Transmission hydraulic valve

The transmission hydraulic control relief valve can be

adjusted by increasing or by decreasing the spring load

(2).

1. Remove cap (3) from the end of the transmission

hydraulic control relief valve;

2. Turn adjustment screw (4) in the appropriate

direction;

3. Recheck the pressure at pressure tap (11). Tighten

locknut (5) and replace cover (3).

FIG. 3

Q000047S

1

FIG. 4

Q000048S

2

3

5

4