1.
Measure the length of the brush protrusion shown in the illustration, and replace the brush if the measured value is below the limit value.
Limit : 2mm (0.8 in.) or less |
Measure the length of the brush protrusion shown in the illustration, and replace the brush if the measured value is below the limit value.
Limit : 2mm (0.8 in.) or less |
The brush can be removed if the solder of the brush lead wire is removed.
When installing a new brush, insert the brush into the holder, and then solder the lead wire.
Remove the four through bolts.
Insert a flat screwdriver between the front bracket and stator core, and pry downward.
Do not insert the screwdriver too deeply, as there is a danger of damaging the stator coil.
The rear cover may be hard to remove because a ring is used to lock the outer race of the rear bearing. To facilitate removal of rear cover, heat just the bearing box section with a 200-watt soldering iron. Do not use aheat gun as it may damage the diode assembly.
Secure the rotor in a vise with the pulley side up.
Be careful that the vise jaws do not damage the rotor.
Remove the pulley nut, spring washer, pulley, and spacer.
Remove the front bracket and two seals.
Remove the rotor from the vise.
Remove the brush holder screws, rectifier screws, and nut from the "B" terminal.
Remove the stator assembly from the rear bracket.
Detach the slinger from the brush holder.
When the stator is to be removed, unsolder the three stator leads to the main diodes on the rectifier.
When soldering or unsoldering, make sure that heat from soldering iron is not transmitted to the diodes for a long period.
Do not exert excessive force on the leads of the diodes.
When separating the rectifier from the brush holder, unsolder the two plates soldered to the rectifier.
Check the rotor coil for continuity. Make sure there is continuity between the slip rings.
Check the rotor coil for a ground. Check that there is no continuity between slip the ring and the core. If there is continuity, replace rotorassembly.
Make a continuity check on the stator coil. Check that there is continuity between the coil leads. If there is no continuity, replace thestator assembly.
Check the coil for grounding. Check that there is no continuity between the coil and the core. If there is continuity, replace the statorassembly.
