T-Tech TT100 - Manual (Page 17)

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
Valve
in
SERVICE
Position
Check
Valve
Check
Valve
Check
Valve
Old
or
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