ENGINE MECHANICAL 6A – 51 10. Timing Gear Case Cover The timing gear case is tightened together with the injection pump at the 6 points indicated by the arrows in the illustration. 11. Water Pump
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12. Idle Gear B and shaft Before removing the idle gear B, install bolt (M6,L=30) to the hole marked with an arrow in the illustration to hold the scissor gear in place.
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13. Idler Gear "A" 1. Measure the camshaft timing gear backlash and the crankshaft timing gear backlash before removing the idler gear. 2. Measure the idler gear end play before removing the idler gear.
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NOTE: Refer to the following items for details on the backlash and end play measurement procedures.
Timing Gear Backlash Measurement 1. Set a dial indicator to the timing gear to measured. Hold both the gear to be checked and the adjusting gear stationary. 2. Move the gear to be checked as far as possible to both the right and the left. Take the dial indicator reading. If the measured value exceeds the specified limit, the timing gear must be replaced. 020RY00020
Timing Gear Backlash Standard 0.10 - 0.17 (0.0039 - 0.0067)
mm (in) Limit 0.30 (0.012)