| Author |
Message |
Rexrcr (Rexrcr)
New member
Username: Rexrcr
Post Number: 6
Registered: 11-2002
| | Posted on Wednesday, November 27, 2002 - 10:15 pm: | |
Johndillinger-
"i replaced the rubber boots that cover the pistons"
Sounds like you only replaced the dust seals and not the caliper seals? You used compressed air to "pop" the caliper pistons out one at a time on your work bench and replaced the square-sectioned seal, not just the articulated accordian-like boot?
With one rear wheel on the ground and the other in the air, you tried to test the torque capabilities of your clutch-type limited slip differential. If you could have turned the wheel in this condition, it would mean your limited-slip diff was excesively worn. |
magoo (Magoo)
Advanced Member
Username: Magoo
Post Number: 3592
Registered: 2-2001
| | Posted on Tuesday, November 26, 2002 - 11:59 pm: | |
Wooden block is the best suggestion. Had the same problem on the F.C. before. It took a little persuasion but it will come loose. |
Henryk (Henryk)
Member
Username: Henryk
Post Number: 347
Registered: 8-2001
| | Posted on Tuesday, November 26, 2002 - 10:41 pm: | |
Glen: Good luck. I'll be gone till Sunday. |
Henryk (Henryk)
Member
Username: Henryk
Post Number: 346
Registered: 8-2001
| | Posted on Tuesday, November 26, 2002 - 9:45 pm: | |
Apply some spray, to loosen nuts, around the center of the rotor. This is were it sticks. Let it sit for a while, before punding. Before putting it back on, use some sand paper on the inner edge of the rotor, and the outer edge of the hub. Then apply some anti-sieze prior to assembly.
Did you remove the two alignment pins? |
Glen Mckenna (Johndillinger)
New member
Username: Johndillinger
Post Number: 37
Registered: 7-2002
| | Posted on Tuesday, November 26, 2002 - 9:36 pm: | |
im able to turn the rotor so i guess the brake isnt stuck on... just a bear to get off - ill try the non whimpy approch |
Henryk (Henryk)
Member
Username: Henryk
Post Number: 345
Registered: 8-2001
| | Posted on Tuesday, November 26, 2002 - 9:27 pm: | |
Try pushing on the E-brake cable, at the wheel hub, were it enters.....push it towards the outside of the car. This will loosen the brake pad, if it is stuck open due to a stuck cable.
I used a 2X4 block and a 2-pound hammer. Don't use a wimpy hammer. |
Henryk (Henryk)
Member
Username: Henryk
Post Number: 344
Registered: 8-2001
| | Posted on Tuesday, November 26, 2002 - 9:19 pm: | |
Glen: Can you turn the rotor by hand? If the parking brake pad is stuck against the inner rotor, it will not come off till you release the brake pad. This is done with the large hole, in the rotor, and a screwdriver. Place the hole in the 12 0'clock position and, with the scredriver, turn the inner star wheel. Go in both directions to see which way you have to go to get the brake pad off the inner rotor. Then, Pound like hell!!!!! |
Glen Mckenna (Johndillinger)
New member
Username: Johndillinger
Post Number: 36
Registered: 7-2002
| | Posted on Tuesday, November 26, 2002 - 8:42 pm: | |
any help guys to quickly remove it ?????? |
Glen Mckenna (Johndillinger)
New member
Username: Johndillinger
Post Number: 35
Registered: 7-2002
| | Posted on Tuesday, November 26, 2002 - 8:14 pm: | |
"take a block of wood and pound it" you werent kidding - having a hell of a time removing the rotor - maybe a tree trunk would be better..... |
Henryk (Henryk)
Member
Username: Henryk
Post Number: 343
Registered: 8-2001
| | Posted on Monday, November 25, 2002 - 9:56 pm: | |
Remember to lube the top "star" wheel, and the bottom "folding" mechanisms. These were VERY dry and hard to move by hand when I examined mine.
Good luck |
Glen Mckenna (Johndillinger)
New member
Username: Johndillinger
Post Number: 32
Registered: 7-2002
| | Posted on Monday, November 25, 2002 - 9:53 pm: | |
must be the ebrake - ill inspect it and let u know what i find - appreciate the help |
Henryk (Henryk)
Member
Username: Henryk
Post Number: 342
Registered: 8-2001
| | Posted on Monday, November 25, 2002 - 9:49 pm: | |
Not necessarily. It is a friction pad.....where would the noise come from? My made noise because the brake pad was loose, and the noise came from the steel frame of the brake pad hitting the hub as it moved around. |
Glen Mckenna (Johndillinger)
New member
Username: Johndillinger
Post Number: 31
Registered: 7-2002
| | Posted on Monday, November 25, 2002 - 9:43 pm: | |
the pistons seem fine - pushed in without a problem - wheel isnt making a sound - wouldnt i hear the ebrake if it was applied /? |
Henryk (Henryk)
Member
Username: Henryk
Post Number: 341
Registered: 8-2001
| | Posted on Monday, November 25, 2002 - 9:36 pm: | |
If the wheel bearing isn't making noise, then, the hot rotor can only be due to either; stuck E-brake pad, or frozen pushed out piston in the caliper. Did you check for frozen piston? Where they easy to push back in? |
Glen Mckenna (Johndillinger)
New member
Username: Johndillinger
Post Number: 30
Registered: 7-2002
| | Posted on Monday, November 25, 2002 - 9:29 pm: | |
i realize the pads will be a little stiff while new, but the left rear seem awful hot when i returned from a quick test run (it was extremely hot) as the right rear seemed warm - something isnt right. Could the ebrake have gotten out of adjustment while raising the car ? im wondering if the cable got pulled somehow, causing the brake to be applied, but wouldnt it release after the cable was relaxed. i guess i need to inspect the ebrake... |
Henryk (Henryk)
Member
Username: Henryk
Post Number: 340
Registered: 8-2001
| | Posted on Monday, November 25, 2002 - 9:25 pm: | |
Glen: If you removed the caliper, as I suspect, you should also check the parking brake pads, and their mechanics. I worked on this just this past weekend, on my 88TR.
Remove the two 13mm adjusting nuts, located below the dry sump, and disconnect the cable from there. I assume you released the ER brake handle first.
Next, remove the two alingment pins located in the rotor; 12mm. Now you will find the rotor "frozen" to the hub. Take a block of wood and pound it, against the rotor from the inside. Do this in several locations around the rotor. It will eventually come off.
Check the push-type locking pins; there aare two, one for each brake pad. These are prone to rust. I heard a noise in the wheel, and assumed that the parking brake came free, and loose, within the hub. I found one pin loose, due to a missing, probably rusty, round insert. I will be replacing the pins, with the round disc that they go into. The round insert is pushed into a cavity from the inside of the hub.
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Glen Mckenna (Johndillinger)
New member
Username: Johndillinger
Post Number: 29
Registered: 7-2002
| | Posted on Monday, November 25, 2002 - 8:58 pm: | |
pot seals? i replaced the rubber boots that cover the pistons - r they considered pot seals ?
and no i didnt adjust the e-brake, should i ? after you remove the 2 bolts- how do you remove the cover to expose the ebrake?
i had one tire off the ground and one on the floor - i guess that explains why it seem very difficult to turn. |
F-J'87EuroTR (Ferrarijoe)
Member
Username: Ferrarijoe
Post Number: 288
Registered: 5-2001
| | Posted on Monday, November 25, 2002 - 8:19 pm: | |
Glen,
When you replaced the caliper seals, are you referring to the pot seals? If so, these new seals will be stiffer and keep the new pads pushed against the rotors until they brake in more. Did you adjust the e-brake while you were in there?
I presume that the e-brake was off. When the car is off the ground in neutral and you turn one side, there should be some drag and the other wheel will turn in the opposite direction via the differential. If the drag is significant and you can hear noises from the hub, then the e-brake might need to be adjusted out.
Joe
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mike 308 (Concorde)
Junior Member
Username: Concorde
Post Number: 55
Registered: 8-2002
| | Posted on Monday, November 25, 2002 - 8:18 pm: | |
Maybe it was in gear? |
Glen Mckenna (Johndillinger)
New member
Username: Johndillinger
Post Number: 28
Registered: 7-2002
| | Posted on Monday, November 25, 2002 - 7:39 pm: | |
just replaced my rear pads and caliper seals on my 90 Testarrosa - i noticed while having the car in the air that i was barely able to turn the rear wheels - is this normal ? (even before the new pads) |