Caliper Grease Question
Thread Starter
|
Junior User
Joined: Oct 2002
Posts: 64
Likes: 0
Caliper Grease Question
82 F100, new rubber brake hoses, new calipers, 10k mi on pads and rotors.
I recently replaced my front brakes and afterwards noticed that when the front end is up on jack stands that the drivers side (left) front tire seems like it halfway locked up. I can turn it with one hand but not very much. The passenger side (right) front tire easily makes a complete revolution with a one hand spin. I thought that the new caliper I bought might have been sticking so I replaced it. Still have the problem. My alignment is bad as well as my axle pivot bushings and radius arm bushings. I was about to take it to the shop to get those fixed when I found this problem. The shop does not do brake work, so I figured I should get this fixed first, so that when they do the alignment it won't be a problem. (Does it matter?)
I've done searches and found many threads that may apply to me. One of them mentions caliper grease, is this the brake quiet anti rattle gel you put on the metal side of the pad where the piston touches it or is it grease to put along the channel that the inside pad (piston side) moves in? Also, I can wedge a screwdriver between the rotor and the caliper piston to make it travel back and it allows the rotor to spin freely until I apply the brakes the next time. I did not know about the do-wha-dilly on the proportioning valve that your supposed to pull out when bleeding brakes, so I need to see if I have that. So I may have not bled the brakes properly. Would that cause this problem?
Thanks for looking! -John
I recently replaced my front brakes and afterwards noticed that when the front end is up on jack stands that the drivers side (left) front tire seems like it halfway locked up. I can turn it with one hand but not very much. The passenger side (right) front tire easily makes a complete revolution with a one hand spin. I thought that the new caliper I bought might have been sticking so I replaced it. Still have the problem. My alignment is bad as well as my axle pivot bushings and radius arm bushings. I was about to take it to the shop to get those fixed when I found this problem. The shop does not do brake work, so I figured I should get this fixed first, so that when they do the alignment it won't be a problem. (Does it matter?)
I've done searches and found many threads that may apply to me. One of them mentions caliper grease, is this the brake quiet anti rattle gel you put on the metal side of the pad where the piston touches it or is it grease to put along the channel that the inside pad (piston side) moves in? Also, I can wedge a screwdriver between the rotor and the caliper piston to make it travel back and it allows the rotor to spin freely until I apply the brakes the next time. I did not know about the do-wha-dilly on the proportioning valve that your supposed to pull out when bleeding brakes, so I need to see if I have that. So I may have not bled the brakes properly. Would that cause this problem?
Thanks for looking! -John
Senior User
Joined: Mar 2002
Posts: 450
Likes: 0
From: Charter Oak, Iowa
Caliper Grease Question
Air remaining in the brake line can cause the caliper to move back against the rotor. Brake fluid does not compress but air does. If there is air in the line, the air will simply compress as you press on the brake pedal and then decompress after pedal release which forces the pad back onto the rotor. I'd try a re-bleed and see if this clears up your problem.
Randy
Randy
