Disassembly
Remove the four through-bolts.
Scheme 28
Heat portion (A) of rear cover to 50°C (122°F) with a heater drier.
Scheme 29
Then insert the tip of a flat tip screwdriver into the gap between stator core and front cover. Pry them apart to disassemble.
Scheme 30
- Screwdriver
Hold the rotor with a vise and remove pulley nut.
Scheme 31
| IMPORTANT | When holding the rotor with a vise, place aluminum plates or wooden pieces on the vise jaws to prevent rotor from damage. |
Scheme 32
- Front cover
- Pulley
- Nut
- Rotor
Remove the ball bearing as follows.
Remove the bolt, and then remove the bearing retainer.
Scheme 33
Firmly install an appropriate tool (such as a fit socket wrench) to bearing inner race.
Scheme 34
Push the ball bearing off the front cover using a press.
Remove the bearing from rotor using a bearing puller.
Scheme 35
Unsolder connection between rectifier and stator coil to remove the stator coil.
| IMPORTANT | Do not allow a 180 - 270 W soldering iron to contact the terminals for more than 5 seconds at once because the rectifier cannot withstand so much heat. |
Scheme 36
Remove the IC regulator as follows.
Remove the screws which secure IC regulator to rear cover.
Scheme 37
Unsolder the connection between IC regulator and rectifier to remove the IC regulator.
Scheme 38
Remove the brush as follows.
Remove cover A.
Scheme 39
- Cover A
Remove cover B.
Scheme 40
- Cover B
Separate the brush from connection to remove.
Scheme 41
Remove the rectifier as follows.
Remove the bolts which secure the rectifier.
Scheme 42
Remove the cover of terminal B.
Scheme 43
Remove the nut of terminal B, and then remove the rectifier.
Scheme 44
Assembly
Assemble in the reverse order of disassembly.
Pulling up brush
Before assembling, press the brush down into brush holder, and then fix them in that position by passing a [1 mm (0.08 in) dia. 40 to 50 mm (1.6 to 2.0 in) long] wire through the hole as shown in the figure.
| IMPORTANT | Be sure to remove the wire after reassembly. |
Scheme 45
- Wire
Install the ball bearing.
Set the ball bearing on the front cover, and then securely install an appropriate tool (such as a fit socket wrench) to the bearing outer race.
Press the ball bearing into the specified position using a press.
Install the bearing retainer.
Press the bearing (rear side) into the rotor shaft using a press to install.
Heat the bearing box in rear cover [50 to 60°C (122 to 140°F)], and then press the rear bearing into rear cover.
| IMPORTANT | Grease should not be applied to rear bearing. Remove the oil completely if it is found on bearing box. |
After reassembly, turn the pulley by hand to check that rotor turns smoothly.