Removing Lock Ring From Piston

In removing piston pin, first remove lock ring from end of pin that is slotted. Slot permits getting a screwdriver underneath lock ring and forcing it off. Use end of special tool specified below as a rest for screwdriver (see Illus. 73). Pin can then be driven out of piston. Use a drift of proper size to avoid damaging end of pin and piston boss and strike light hammer blows to avoid bending connecting rod.

If piston pin is to be used again, examine lock ring on unslotted end of pin and if ring is tight in its groove and undamaged it is not necessary to disturb it. If a new ring is reguired, clean ring groove and install ring before pin is installed in piston. Piston pin included with new piston assembly will have lock ring already installed on unslotted end.

When reassembling piston to rod, after giving due attention to correct fit of pin in both, piston and rod upper bearing, clean lock ring groove and install lock ring on end of pin that is not slotted. Start slotted end of pin into piston boss and drive through in the same manner in which pin was removed.

If the piston (but not the pin) is heated about as hot as it can be handled before pin is started, pin will drive through easier than in a piston at room temperature. After pin is in place, clean lock ring groove and install the other lock ring (see Illus. 74). It is important that Harley-Davidson special lock ring tool. Part No. 12052-32, be used for installing lock rings, as with this tpol lock ring is expanded just enough to go over end of pin. Other means of installing may over-expand ring and possibly crack it. Make sure ring groove is clean and that ring seats firmly in groove; if it doesn't, discard it and install another new one. A lock ring loosely installed will rapidly loosen further in service and finally will come off pin, resulting in both piston and cylinder soon being damaged beyond repair. Never install a used lock ring or a new one if if has been installed and then removed for any reason, always use a new lock ring.

DIY Battery Repair

DIY Battery Repair

You can now recondition your old batteries at home and bring them back to 100 percent of their working condition. This guide will enable you to revive All NiCd batteries regardless of brand and battery volt. It will give you the required information on how to re-energize and revive your NiCd batteries through the RVD process, charging method and charging guidelines.

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