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Gearbox Assembly
1. Clean and lubricate the front and rear bearing areas of the drive and idle shafts with oil.
2. Fit the front bearing, spacer and rear bearing on the shaft by arbor press or heat 120C
(250F) up by heater.
3. Lubricate and install the front bearing oil seals (22) in to the bearing gland.
4. Position the gearbox (1) with wet end up. Must be carefully placed gasket face of cover.
5. Clean and lubricate the front and rear bearing areas with oil.
6. Insert the shaft perpendicularly to the gearbox properly. There should be a tight sliding fit
between the gearbox and the bearing outer rings. Press or soft hammer could be used.
7. Place the front bearing gland set bolt and washer and tightened.
8. Lubricate and install the rear oil seal cover (24) into gear box (1).
9. Place the gear spacer (16) over the shafts.
10. Clean and lubricate the gear area of the shaft and the face of the lock washer, with oil.
11. Position both shaft gear keys (7) to the 12:00 position.
12. Place the gear, lock washer (12) and lock nut (12-1) onto the shafts and hand tighten.
13. After the gears are installed, turn the shafts to make sure they turn freely and that the
rotors (38) are timed correctly. (rotor alignments are required)
14. Use a spanner wrench to tighten the gear lock nut on the drive shaft. You can install the
rotors to hold the shafts in place while you tighten the nut.
15. Tighten the locknut (12) on the idle shaft, following the previous steps.
16. Install the paper gasket to rear cover (26) and mount the rear cover assembly over the
drive shaft extension onto the gearbox.
17. Set the cover bolts, oil window and pressure relieve valve.
18. Fill the oil reservoir with oil to the middle of the oil wind.
16
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