12
TRANSFLOW Transmission Cooling System Service Tool J-45096
Flow Test/Flush Operation
1. Follow the machine set-up procedure on
page 11.
2. From the machine display, identify the tem-
perature of the automatic transmission fluid
that is stored in the supply vessel of Trans-
Flow.
Example:
3. Determine whether the T.O.C. is steel or
aluminum by using a magnet at the cooler
flange at the radiator. See Figure 1.
4. Using the temperature from step 2, locate on
either the Steel
MINIMUM
Flow Rate chart
or the Aluminum
MINIMUM
Flow Rate chart
the
MINIMUM
flow rate in gallons per min-
utes (GPM). Then record the MINIMUM
Flow Rate in GPMs and the supply fluid
temperature for further reference.
STEEL T.O.C.
MINIMUM Flow Rate (gpm)
T
emperature Range
Steel
(Degrees Fahrenheit)
65 to 66
0.6
67 to 70
0.7
71 to 75
0.8
76 to 80
0.9
81 to 84
1.0
85 to 89
1.1
90 to 94
1.2
95 to 98
1.3
99 to 103
1.4
104 to 108
1.5
109 to 112
1.6
113 to 117
1.7
118 to 120
1.8
MINIMUM Flow Rate (gpm)
Temperature Range
Aluminum
(Degrees Fahrenheit)
65 to 66
0.5
67 to 70
0.6
71 to 75
0.7
76 to 80
0.8
81 to 84
0.9
85 to 89
1.0
90 to 94
1.1
95 to 98
1.2
99 to 103
1.3
104 to 108
1.4
109 to 112
1.5
113 to 117
1.6
118 to 120
1.7
Example:
Fluid temperature:
75 degree Fahrenheit
Cooler type:
STEEL
The MINIMUM flow rate for this example would be 0.8
GPM.
5. Inspect T.O.C. lines for damage or kinks
that could cause restricted oil flow. Repair
as needed. (Refer to the appropriate GM
service manual procedures.)
IDLE
FLUID 18 QTS @ 075F
075F
Degrees Fahrenheit
Figure 1
Cooler Flange
Magnet
ALUMINUM T.O.C.
