96 Volvo 850 comments on ATE rear calipers?

[PeteB]

Pete, thanks for the insights. Maybe pulling the pads yearly to regrease the slide areas would help. I might consider doing that, plus the theory about pads dragging due to hose constriction is interesting.

I had rear hoses that were completely blocked making it impossible to
bleed on a Mazda 626, could not believe that it was the hoses until I
changed them.

Checking the pads during a tire rotation makes a lot of sense.

[misha]

...That may work for you but not for our 850.

There are no slide "pins" on the rear since they are dual piston.

You are very lucky if you don't have to inspect them yearly.

Mine calipers are ATE and they are single piston.

[Roger_850T]

ATE has been putting brakes on Volvos for years - I know for certain they were on my (multiple) 240's, my 850's, and others. I have no issues with the brand - they have never caused me any problems. For your installation, it would all be based on the condition of the calipers you obtained, which sounds pretty good.

I don't think I've ever greased the pins in the ATE calipers on the rears. (Front single piston brakes - yes; rear dual piston brakes - no.) The calipers don't move. The only thing that moves is the pads (and yes, the pistons behind the pads), and for those I make sure they are clean and coated with anti-squeal at all the contact points (not the friction material!) to stop squeaking/squealing.

Roger

[Roger_850T]

I looked through VIDA and some other online resources, and saw that Volvo put a single-piston slide-pin caliper on some 850's in 1997. Most were the dual piston, but I see the listing for the single piston if I look hard. (May have been 1997 AWD only for 850's? Volvo p/n 9140394)

Same caliper was used on:
760,780: 1988-1989-1990
940,960: 1991-1997
S70,V70: 1998-2000

So I guess the lesson is to check what you have!

Roger

[JimBee]

The calipers I plan to install are dual piston from a 97 850. I think the installed ones I plan to replace are single piston. Will there be a difference in the mount brackets?