Brake rotor replacement question.

Post by **ned4spd8874** » Fri Sep 19, 2003 9:02 am

I am going to replace my front rotors this weekend, and while looking through the manual I found that it looks really easy. One problem though. It says that I have to screw bolts into the rotor to push it off. But it never tells me what kind of bolts! What size would I need to get the rotors off? Thanks!

Post by **ned4spd8874** » Fri Sep 19, 2003 9:02 am

Sorry, I forgot...I have a 1995 Nissan 240SX/SE. Thanks again!

Post by **s14=pimpin'** » Fri Sep 19, 2003 9:02 am

not sure, i just did my rear rotors/pads, and i had to unbolt the rear torque member (where the caliper bolts onto) to remove the rotor. i actually just removed one bolt, slid it over, and the rotor came off, but agian, this was the rears.

anyway, make sure to lube the caliper connecting pins. Mine seized on the rear, and its been a biatch to locate a new torque member.

Post by **Nismo_Freak** » Fri Sep 19, 2003 9:02 am

Don't bother... if your replacing the rotors simply remove the wheel and caliper... then hammer the back of the rotor until it pops off.

Otherwise, I *think* the hole is for an 8mm bolt.

Post by **T_love** » Fri Sep 19, 2003 9:02 am

Nismo_Freak wrote:Don't bother... if your replacing the rotors simply remove the wheel and caliper... then hammer the back of the rotor until it pops off.

Otherwise, I *think* the hole is for an 8mm bolt.

What he said.. as long as the old rotor is not gonna be used again. Otherwise use one of those rubber hammers.

Post by **ned4spd8874** » Fri Sep 19, 2003 9:02 am

Thanks for all the info guys. I was not able to replace them today like I had originally planned. I tried, but the darn bolts that hold in the caliper bracket would not come out! I tried for about an hour and could not get them to budge. I am going over a friends tommorrow and hopefully we will be able to get them replaced!

Post by **NISTECH** » Fri Sep 19, 2003 9:02 am

if the rotors are not rusted to the hubs using the bolts the manual mentions are not nessesary. They will simply slide right off the wheel studs.

Post by **gunclap** » Fri Sep 19, 2003 9:02 am

does anyone know the torque specs on the two 19mm bolts that hold the whole caliper to the bracket...sorry if i got the names wrong. i don't know what they're called. i took off the caliper to replace my front rotors and i didn't know the torque specs, so i just put the 19mm bolt to 50 ft lbs? is that alright?

Post by **DAEDALUS** » Fri Sep 19, 2003 9:02 am

Be careful when you talk about screws and bolts of such-and-such size. If you walk into a hardware store and ask for a 19mm bolt, they'll think you mean a 19mm diameter-shank bolt, though I'm certain you mean the heads take a 19mm socket. The standard torque for a 19mm diameter-shank bolt is probably several hundred ft-lbs or more. I think the range for the bolts you're talking about is 53-72 ft-lbs, though someone should check the FSM to be certain. 50 ft-lbs is pretty close...as long as the running torque wasn't much I wouldn't worry about it. There's always a bit of margin built into the specs.

The sliding shear pin bolts I think take 61-69 ft-lbs.

Post by **s14=pimpin'** » Fri Sep 19, 2003 9:02 am

the part that the caliper bolts onto is called the torque member. To bolt the caliper on, the rears take 22pds/ft (not sure about the front, sorry, I'll check me fsm for you). You will notice the slider pins (where the caliper bolts screw into). Do not over torque this piece, it may lead to uneven wear in pads/ siezure. Make sure these bolts slide off freely, or else you will have to replace your torque member.

Reason why I say check them is, on my car, the rears were totally rusted together, and siezed. I just wanted to change my pads, so i did, bolted everything back up, including my old rotor, and drove away. A couple hours later, the rotor snapped into 2!! Couldn't figure out what the problem was, so luckily i found a 98 240 i could rip parts off (long story) and I swapped calipers, but not torque members. Anyway, bought a new rotor, slapped it on, and it snapped 4 hours later. Took the whole system apart, found my caliper pins rusted shut, went to the scrap yard, picked up a member off an s13, slapped it on, and it runs fine. Now i have to find another one for the other side (Nissan only sells this part with caliper, $200, not worth it if your caliper is fine).

To check the pins, just pull them out. They slide off with ease, and make sure to lube them over once they are off. There is a little rubber boot that goes over them, if you are unsure of which pins i am talking about

whew

Brake rotor replacement question.

Brake rotor replacement question.

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