A/T - New Torque Converter End Play Measurement & Tool
Bulletin: 85-7-8Date: Apr 1985
Ref.. No.: 85-223-7
SUBJECT: NEW TORQUE CONVERTER END PLAY MEASUREMENT TOOL
MODELS AFFECTED: ALL YEARS
FIGURE 1 - J 35138TORQUE CONVERTER END PLAY MEASUREMENT TOOL:
A new, essential Torque Converter End Play Measurement tool, Kent-Moore number J-35138 (refer to Figure 1) has been developed and will be shipped to GM dealers approximately May, 1985. This new universal tool replaces the previously released End Play Measurement tools, Kent-Moore number J-28538, J-25020-02, J-29060, J-21371 and J-29830.
Using J-35138, end play measurement on all torque converters is performed as follows:
1. Screw upper and lower knurled knobs together. Be sure collet end is not expanded (refer to Figure 1).
FIGURE 2INSTALLING J 35138 INTO CONVERTER:
2. Insert J-35138 into the torque converter hub (refer to Figure 2).
3. Slide tapered plug into torque converter hub. Plug is for alignment of tool.
4. Hold upper knurled knob and turn wing nut clockwise until hand tight to expand collet into converter turbine hub. Then loosen wing nut (counter clockwise) 2 1/2 turns, or until tool is loose (will move up and down) while not removeable from converter.
5. Hold upper knurled knob and turn lower knurled knob clockwise until hand tight to clamp tool in the converter turbine hub.
FIGURE 3CHECKING END PLAY MEASUREMENT:
6. Attach magnetic base (J-26900-13) to torque converter and set up dial indicator (J-8001) so that indicator tip is in center of tool wing nut (refer to Figure 3).
7. To make end play check, push upper knurled knob down, zero out dial indicator and pull lower knurled knob up. Be sure tapered plug stays seated in converter hub. End play is the difference between up and down positions. DO NOT ALLOW WING NUT TO TURN WHEN MEASURING.
8. Remove tool by holding upper knurled knob and turning wing nut counter clockwise.
Refer to the following chart for torque converter end play specifications. Torque converters that exceed the maximum end play specifications should be replaced.
SIZE
APPROX. OUTSIDE END PLAY
STYLE DIAMETER SPECIFICATIONS
245 mm 0 - 0.50 mm
TORQUE CONVERTER (10 inches) (0 - 0.019")
CLUTCH (T.C.C.)
298 mm 0 - 0.60 mm
(12 inches) (0 - 0.023")
OPEN CONVERTER ALL SIZES
0 -1.30 mm
(NON-T.C.C.)
(0 - 0.050")