DISASSEMBLY & SERVICE

In order to remove the generator you must first remove the wiring from the terminals on the clear, plastic terminal block in the junction box. Be sure to note their position for later re-installation. An alternative is to remove the junction box from the alternator base by removing the two bolts on the bracket. Then, undo the four allen head bolts that attach the generator to the finned, aluminum base, using the allen wrench supplied with the LH1000. The four bolts are located under the generator base, and thread upward into the generator. Next, unscrew the polyurethane nose cone from the base of the unit, located inside the guide vane assembly, at the end of the shaft in a counter-clockwise or right hand direction. Proceed to remove the propeller by removing the ¾ inch (19mm) brass nut, then the washer, and finally, slide the propeller from the shaft. Now, the generator and shaft assembly may be pulled up, and out of the generator base and shaft housing. The shaft may now be unscrewed so as to remove the long turbine shaft from the generator shaft.

The finned alternator base can be removed from the shaft housing by unscrewing it. The shaft housing can also be unscrewed from the guide vane base. The aluminum guide vane base is attached to the polyurethane guide vane assembly with four 1/4 -20 allen head bolts that may be removed using the provided wrench and a 7/16 (11mm) wrench.

Replace bearings as soon as you notice any looseness and check the air gap thickness for any change. If they are too loose, severe damage to both the rotor and the stator can result. This machine uses three 6203 ball bearings with rubber seals, in the generator, and has a water lubricated bearing located in the guide vane base. These are a slip fit into the alternator housing and the guide vane base.