T-tech TT100 User Manual download pdf (Page 17)

Fluid Exchange Function

Use this function to exchange old automatic transmission

fluid (ATF) with new ATF.

1. With the T-TECH auto align feature, you need not

be concerned about which service transfer hose

is connected to the transmission cooling line or to

the radiator because flow direction is controlled

through the

T-TECH unit.

2. Set CONTROL VALVE (on the

T-TECH control

panel) to SERVICE VEHICLE (pointing straight up).

3. Start the vehicle. The pressure gauge (on the

T-TECH control panel) should read between 10

and 75 lbs., depending on the vehicle being

serviced. If the pressure is below 10 lbs. and the

piston is not moving in an upward direction, see

Troubleshooting.

4. The piston should begin to move upward in the

cylinder (see Figure 49). Notice that the old fluid

enters the cylinder under the piston. The old fluid

pumped in by the vehicle transmission pushes up

on the piston, which in turn pushes an equal

amount of new fluid out the top of the cylinder

and into the vehicle.

5. You may notice some fluid between the O-rings on the piston (see Figure 50). The presence of new ATF is

normal between the O-rings for lubrication of the piston and O-rings. However, if old ATF passes by the

O-rings and into the new ATF, O-ring replacement is needed. (See

Troubleshooting)

6. When the desired amount (vehicle system capacity) of ATF has been exchanged, or the fluid in the service

hose coming from the vehicle runs clear, turn the vehicle OFF, remove all hoses and hose connections and

reconnect the vehicle transmission cooling lines.

7. Restart the vehicle.

8. Check the ATF level in the vehicle. (Check the vehicle dipstick for proper procedure. Some vehicles require

the transmission be in PARK and some in NEUTRAL.)

9. Inspect the vehicle fittings for leaks.

10. Fluid exchange is complete.

T-TECH

FITTINGS

Piston Moving

Up From Bottom

Of Cylinder

Old Fluid

New Fluid

T-TECH

FITTINGS

Fluid Between

O-Rings

Overflow

Tank

Bulk Fill

Service

Port

Hoses

To and From

The

Transmission

Automatic

Bypass

Line

Automatic

Alignment

Valve

Check

Valve

Three

Way

Valve

SERVICE

Position

Check

Valve

Check

Valve

Check

Valve

Old

Dirty

Fluid

New

Fluid

Pressure

Relief

Valve

System

Pressure

Figure 49. Piston Movement Figure 50. Fluid Between O-Rings

Figure 48. Vehicle Service Flow Direction

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 ... 37 38

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T-tech TT100 User Manual Page 17

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