help with fitting V70R rear rotors over e-brake shoes

Post by **sanfelice** » 08 Jun 2016, 17:27

Of course, got one side and second side is not cooperating. I cannot seem to get the spring mechanism to seat as flush as possible. The cam is compressed all the way, so no more to gain on that side. The cable is loosened from the interior,quite a bit not sure how much more I can gain on that front, if anythning. That doesn't seem to by my problem, anyway.

Any ideas?

Post by **scot850** » 08 Jun 2016, 17:45

Did you replace anything in the parking brake system? Did you have a challenge getting the rotors off, particularly on that side?

I'd suggest if you did not replace the cables, it could be the cable on that side is stuck, not allowing the brake lever to fully compress. Also check you have the adjuster fully compressed (I'm sure you have).

Are you using OE (Volvo) rotors or aftermarket? If aftermarket check that the internal diameters of the 'drum' are the same.

I recall it being a bit of a faff to get the rotors on, but try moving the whole parking brake assembly as it doesn't always center.

Neil.

Post by **sanfelice** » 08 Jun 2016, 17:55

Aftermarket rotors, seem to be of decent quality (Chinese but seem very similar to my Brembo)

Yes, they were a bear to get off, but the interior drum had developed a slight lip, so I thought it was that. OF course, this is the second of two that is the problem, as I was finishing the job in the evening.

Yup, the adjusting cam is fully compressed.

see photos. rusty, eh?

summakor · Post by **summakor** » 08 Jun 2016, 21:49

Since you've successfully reassembled one side, this is irrelevant but the parking brake shoes I got from AutoZone were clearly the wrong size even though the car model was correct. Took me a few minutes to give up and actually compare the old and new shoes. NAPA had the correct size shoes. I did take photos of the mechanism reassembly...

Is that lower lever thing properly seated on both shoes?

summakor · Post by **summakor** » 08 Jun 2016, 22:00

Old parking brakes shoes (what's left of them)

: IMG_20160531_192228222s.jpg (80.82 KiB) Viewed 2437 times

New installation

: IMG_20160601_203847065s.jpg (107.81 KiB) Viewed 2437 times

Post by **scot850** » 08 Jun 2016, 23:13

Wow, it is rusty! I have said before the parking brakes are not a fit and forget item. I suggest first get someone to gently pull on the parking brake lever and watch to see if the brake shoes move. If they do then you should be ok, but when the release the parking brake do the shoes return? If in doubt measure the diameter before and after.

The shoes do not look fully collapsed. There is a swivel pin on the saddle at the end of the cable which seizes when not lubed from time to time. The lever mechanism also can seize. Seen enough of them at PnP and on the cars I have bought. My advice is to strip that side down to the back plat and remove the lever mechanism. You may have to soak it in PB blaster of similar to be able to push the little cylinder pin that holds the cable to the lever out. To access it you have to be able to fold the lever outwards.

Neil.

Post by **mecheng** » 09 Jun 2016, 06:46

There are different sized parking brake pads, be careful when you order. I had to grind my pads down, they were oversized.

Post by **sanfelice** » 09 Jun 2016, 07:09

These are the brake shoes that were on the car, so the old rotor was on this setup, but the new rotor will not fit over.

Yes, I do think the shoes are not fully collapsed. That little pin does swivel, but I now realize the problem may be the cable not fully retracting.

Yes, Neil I should strip that doewn to the backing plate. I am not sure what the cable area as it enters the plate will look like or what I need to free up but I may find out.

Post by **scot850** » 09 Jun 2016, 12:12

Sorry I don't have any pictures to help you, but I've added a picture of how the lever sat on my car when disassembling for the cable replacement.

The part to be most afraid of is the 'C' clip holding the cable to the back of the hub assembly. These are no longer available new (I found mine in Australia!!). I always soak in PB blaster and them carefully try to pry out with a large flat blade screw driver.

Check the cable condition at the mounting for the cable that attaches to the rear Nivomat shock lower mount. Usually what happens is when the mechanism gets stiff or seizes it cracks the outer casing at that point allowing water/dirt to enter and seize the cable or restrict it's movement.

The small cavity behind the parking brake lever is hard to access, but it needs to have a good clean out. The lever assembly is a bit fiddly to extend past the flat blade the parking brake shoes sit on and the hub. Again soak and it may help. If the cable is seized, often the only way to get them out is to cut the cable behind the hub and that will allow the cable to extend to allow the lever assembly to be removed.

Neil.

Post by **sanfelice** » 09 Jun 2016, 13:38

thanks, Neil. that cable had indeed come detached from the housing, but a new cable was not in the cards at the very moment. I did spray the snot out of it with lube, but most of it never made it to its intended target.

My cam looks different than your cam. I have a high suspicion that the parts used on my car were not the correct parts.

I did manage to get it back together, but maybe I should not say how....

Anyhoo, now I have to figure out how to adjust the roller in situ. Perhaps another thread is in order... thanks much for the help.