93 camry calipers act like they're sticking

[moshell]

So i have a 93 camry that runs great except that my front calipers keep sticking causing the rotors to heat and warp. If i release the pedal very slowly it seems to prolong the problem. I've replaced power booster(not for this prob, cause the brakes were fading at lights), master cylinder twice, calipers, and i cleaned and bled all the lines and distribution blocks. Last time i wanted to see if there was still a clog so i gravity bled the lines until i started to get dripage wich led me to the rear chamber of the master cylinder again! this would be the 2nd time i returned it. anyone know if it could be that i set the booster ajustment a little to far up if it might do this?

[73sport]

^^
Yes, you are spot on that incorrect adjustment of the pushrod could apply partial pressure. The spec calls for ZERO clearance when inserting the MC onto the boosters pushrod. I'd suggest some modeling clay on the tip and insert the MC, then remove it for inspection. Personally, you should be able to feel the contact when you seat the MC by hand especially if you bench bled it and plug one of the ports! or shorten the rod until you feel play at the pedal and begin lengthening the rod until the play has all but vanished. THis will be very light finger pressure not a LEG!

IIRC I've seen this on about 4 times now after folks repalce the MC.

[73sport]

Hmm - - just noticed - Post #1

I'll suggest you get acquainted with the search button, you'll find other brake related issues there too (by 73sport) and visit here to the read the manuals. . . Don't hesitate to grab the Lexus stuff too as some applies to the Cami!

http://camrystuff.com/index.php?page=Gen3_Manuals

Toyota Gen3 (1992-1996) Camry Repair Manuals
Thanks to Jeeves @ ToyotaNation.com and RacingSouthwest.com

General Information:
1994 Camry Wiring Schematics (5.48MB)
1992-1996 Camry Parts List (18.92MB)
Wiring Harness Repair Methods (4.93MB)
Mk3 Camry/ES300 Repair Manual
Air Conditioning System (2.59MB)
A140E Automatic Transaxle (4.47MB)
A541E Automatic Transaxle - V6 Automatic Tansmission (4.76MB)
Body Electrical System (7.98MB)
Body (5.61MB)
Brake System (12.64MB)
Charging System (2.05MB)
Clutch (636KB)
5S-FE Engine (I4) (18.00MB)
1MZ-FE Engine (V6) (24.92MB)
Ignition System (2.05MB)
Introduction (1.50MB)
Maintenance (1.26MB)
Manual Transaxle (3.17MB)
Supplemental Restraint System - Air Bags (4.76MB)
Suspension and Axle (3.98MB)
Steering (2.74MB)
Starting System (1.66MB)
Entire Mk3 Camry Repair Manual: CamryRepairManual.rar (110.50MB)

Lexus Specific
1991 ES250 FSM (12.98MB)
1993 ES300 FSM (42.35MB)
1993 ES300 Technical Training (78.34MB)
1997 ES300 FSM (38.45MB)

[moshell]

that seemed to have fixed it! and thanks for the additional info

[oldfirebird]

If the master cylinder adjustment turns out to be good (check that first, it doesn't cost anything), it may be time for new rubber brake hoses. They can swell up internally. The master can push through but the calipers don't push back as hard.
With a tire off the ground, get the caliper to stick. Don't put pressure on the pedal.
Open the bleeder.
If it stays stuck, sounds like a bad caliper
If the caliper releases close the bleeder and get it stuck again, Loosen the line on the other side of the rubber brake line. If it now stays stuck, the hose is swelling up internally.
You could keep working backwards in the system until you see where the blockage is.