wanted to document this for others - realtively easy job and replacement brush yoke and brushes was $16.85 from eBay
Starter motor was easy for me to access as I have the Radium CAI and the stock air intake box is gone
Disconnect the battery
Disconnect the stater motor main lead and solenoid lead
The starter motor has two main bolts, one 14mm and one 19mm - go figure..socket rachet and short extension needed. Also there is a support bracket at the end which has two 10mm bolts. Removing the top bolt and loosening the lower bolt is all that is needed as the bracket will swing out of the way (these are fiddly to get to to say the least)
Once removed you can get the details off of the motor to order your brush yoke
Remove the 2 Allen screws and the two 8mm bolts on the end of the starter motor and the end cap comes off
There is a large circlip holding the brush yoke on the rotor, remove this and the brush yoke comes off.
Clean up the commutator slots with a junior hacksaw blade and or craft knife and use fine emery cloth to clean the comm surface.
Fit the new brush yoke - its a bit of a fiddle to get the brushes held back while sliding the yoke over the comm but it can be done with one person.
Once the motor is reassembled it would be advisable to check that it works with a battery
Refiiting of the motor is the reverse of dismantling
Starter motor was easy for me to access as I have the Radium CAI and the stock air intake box is gone
Disconnect the battery
Disconnect the stater motor main lead and solenoid lead
The starter motor has two main bolts, one 14mm and one 19mm - go figure..socket rachet and short extension needed. Also there is a support bracket at the end which has two 10mm bolts. Removing the top bolt and loosening the lower bolt is all that is needed as the bracket will swing out of the way (these are fiddly to get to to say the least)
Once removed you can get the details off of the motor to order your brush yoke
Remove the 2 Allen screws and the two 8mm bolts on the end of the starter motor and the end cap comes off
There is a large circlip holding the brush yoke on the rotor, remove this and the brush yoke comes off.
Clean up the commutator slots with a junior hacksaw blade and or craft knife and use fine emery cloth to clean the comm surface.
Fit the new brush yoke - its a bit of a fiddle to get the brushes held back while sliding the yoke over the comm but it can be done with one person.
Once the motor is reassembled it would be advisable to check that it works with a battery
Refiiting of the motor is the reverse of dismantling