RECTIFIER/DIODE ASSEMBLY
- Using an ohmmeter, check continuity of each diode in both directions (polarity). see scheme 3-5. If diode shows high resistance in one direction and low resistance in other direction, diode is okay.
- If diode shows low resistance in both directions, diode is shorted. If diode shows high resistance in both directions, diode is open. If any diode is defective, replace rectifier assembly.
DISASSEMBLY
- Place a 200-watt soldering iron against rear bearing for 3-4 minutes to heat rear cover to 122-140°F (50-60°C). Carefully separate front case and rotor from rear cover and stator. (Scheme 5)-16, 18 and 19.
- Position rotor in vise. Remove pulley. Disassemble pulley, rotor and front case. Remove front bearing from front case. Using a bearing puller, remove rear bearing.
- Remove "B" terminal nut and bushing from rear cover. Remove screws from brush holder and rectifier. Separate rear cover and stator. When unsoldering rectifier and stator leads, disconnect as quickly as possible (5 seconds maximum) to avoid damage to rectifier. To remove brushes from holder, unsolder pigtail from terminal.
