bhill81
08-07-2006, 08:11 PM
Not sure if any other MK1 owners have had this problem but my rear calipers have given me nothing but greif from the day I purchased the car back in '94.
Every year or 2 I'd notice the brake fluid was low and an obvious leak at one or both of the rear calipers. I've done a search on this site before about this but nothing came up.
My solution has been to purchase rebuilt calipers from crappy tire and it would work for a while, but enivitably, the problem would resurface.
I guess I finally woke up to the fact that I needed a better solution and looked into a rebuilt kit from Toyota. To my surprise, one is still available - sourced it from japan.
http://i63.photobucket.com/albums/h133/bhill81/IM002327.jpg
contents of rebuild kit
the kit part number is 04479-14051 and contains all that is needed to rebuild the caliper.
Esp. important are the o-ring and plastic ring that are on the parking brake "screw" (for lack of a better term) that is located behind the cylinder.
I've detemined that the calipers usually leak at this spot - you'll see the fluid stain on the boot that covers the parking brake essembly portion of the caliper and a puddle underneath the caliper develop over a long storage.
http://i63.photobucket.com/albums/h133/bhill81/IM002333.jpg
Here is a close up of that screw - you'll see the gaskets and (this is where this caliper is quite unique in my opinion) 7 rounded washers that act as a spring when placed back to back and actually compress when you apply the emerg brake. this, in turn, allows the 'screw' to push the piston and engage the brake.
I figure that these 2 gaskets located on the screw have been the culprit all along and I hope that this problem is now fixed (hasn't leaked yet - been about a week).
http://i63.photobucket.com/albums/h133/bhill81/IM002328.jpg
Just a note on re-essembly, you'll need to compress those washers to put the key, spring and actuator back in place (see picture above) - I used 2 screw drivers and an assistant to put weight on these washers as we eased the key and actuator back together. Hope this info helps anyone who may be experiencing the same problem.
brian
Every year or 2 I'd notice the brake fluid was low and an obvious leak at one or both of the rear calipers. I've done a search on this site before about this but nothing came up.
My solution has been to purchase rebuilt calipers from crappy tire and it would work for a while, but enivitably, the problem would resurface.
I guess I finally woke up to the fact that I needed a better solution and looked into a rebuilt kit from Toyota. To my surprise, one is still available - sourced it from japan.
http://i63.photobucket.com/albums/h133/bhill81/IM002327.jpg
contents of rebuild kit
the kit part number is 04479-14051 and contains all that is needed to rebuild the caliper.
Esp. important are the o-ring and plastic ring that are on the parking brake "screw" (for lack of a better term) that is located behind the cylinder.
I've detemined that the calipers usually leak at this spot - you'll see the fluid stain on the boot that covers the parking brake essembly portion of the caliper and a puddle underneath the caliper develop over a long storage.
http://i63.photobucket.com/albums/h133/bhill81/IM002333.jpg
Here is a close up of that screw - you'll see the gaskets and (this is where this caliper is quite unique in my opinion) 7 rounded washers that act as a spring when placed back to back and actually compress when you apply the emerg brake. this, in turn, allows the 'screw' to push the piston and engage the brake.
I figure that these 2 gaskets located on the screw have been the culprit all along and I hope that this problem is now fixed (hasn't leaked yet - been about a week).
http://i63.photobucket.com/albums/h133/bhill81/IM002328.jpg
Just a note on re-essembly, you'll need to compress those washers to put the key, spring and actuator back in place (see picture above) - I used 2 screw drivers and an assistant to put weight on these washers as we eased the key and actuator back together. Hope this info helps anyone who may be experiencing the same problem.
brian