Measuring End Float Using A Dial Indicator
Below is a drawing showing how to take a crankshaft end-float measurement while using a dial indicator mounted on a magnetic base. The dial indicator tip (Figure 4) is placed against the face of the crankshaft pulley, and the magnetic holder (Figure 2) is to be securely attached to the engine block so that it will not move during readings.
Gently but firmly force the crankshaft toward the rear of the car by pressing against the dog bolt end of the crankshaft. Adjust the dial indicator to zero. Without disturbing the dial gage, get into the car and press the clutch to the floor and then release. This will force the crankshaft in the opposite (forward) direction of the car. Look at the dial indicator to determine how much the crankshaft has moved, and write down the number. Perform this proceedure two or more times for good measure. Once you become proficient at this, your results will become more accurate and consistent.
Please note: This is just a guide for taking an initial crankshaft end-float measurement on a Triumph TR6 without removing parts from the motor. If your readings determine that you have excessive end-play, you'll need to take the necessary steps to determine the cause of the problem.
You may find a better way to perform this task on your own vehicle.
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