Post by davehuge on Dec 18, 2005 14:55:19 GMT
My son complained that the drum brakes on his Taishan Commuter weren't working properly.
The cam pin in the front brake was seized and I had a job removing it, had to place the whole brake back plate in the kitchen oven to free it!
All the pivot pins in the brakes were bone dry. When the brakes are assembled in the factory it seems that they are not lubricated at all !
If you're going to work on the brakes, note the following points...
Below are some photos I took whilst doing the rear brake. Click on thumbnail for a larger image.
No sign of any lubricant anywhere, just waiting to seize up
Rebuilding after lubricating the pivot pin, cam and cam shaft.
I also lightly greased the splined shaft and thread to prevent corrosion and aid removal next time.
Carefully remove any excess grease with a rag. Replace the shoes, ensure springs are fitted correctly. Careful not to get any grease on the shoes. Remove any glaze from the shoes by rubbing lightly with sand paper.
Remember to adjust the cables again after and test the brakes before going out on the road.
It's always a good idea to apply a light film of grease when replacing any bolts to prevent corrosion, seizure and make future removal easier.
The cam pin in the front brake was seized and I had a job removing it, had to place the whole brake back plate in the kitchen oven to free it!
All the pivot pins in the brakes were bone dry. When the brakes are assembled in the factory it seems that they are not lubricated at all !
If you're going to work on the brakes, note the following points...
- Don't breathe in the brake dust.
- Use high temperature grease.
- Take great care to re-assemble correctly, springs the correct way round, etc. Take a photo or make a drawing if necessary.
- Take care not to get any grease on the brake shoes or drum.
- Test the brakes before going for a run on the road!
- If you're not sure what you're doing, leave it to someone who does!
Below are some photos I took whilst doing the rear brake. Click on thumbnail for a larger image.
No sign of any lubricant anywhere, just waiting to seize up
Rebuilding after lubricating the pivot pin, cam and cam shaft.
I also lightly greased the splined shaft and thread to prevent corrosion and aid removal next time.
Carefully remove any excess grease with a rag. Replace the shoes, ensure springs are fitted correctly. Careful not to get any grease on the shoes. Remove any glaze from the shoes by rubbing lightly with sand paper.
Remember to adjust the cables again after and test the brakes before going out on the road.
It's always a good idea to apply a light film of grease when replacing any bolts to prevent corrosion, seizure and make future removal easier.
