Re: front handbrake adjustment seized on 1986 saab 900...
In order to change your front pads you will have to retract the piston back into the caliper.
This is done by rotating the piston by means of a special tool. You can make your own tool. I found that the spanner for changing grinding discs on an electric grinder works fine with a little bending.
If you cannot rotate the piston I'm afraid you're stuffed.
You could try soaking it in penetrating fluid and trying again later.
With older calipers you will often find that after changing the pads the handbrake is pretty useless.
If this is the case your only option is a new caliper (or two)
Your local motor factors will sell you reconditioned units for about £70 each (exchange) so not too bad.
I wouldn't recommend second hand ones because these cars suffer with siezed calipers and a second hand one might not be much better than yours.
Good luck. Tom.
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Make sure your handbrake cable is adjusted properly. Adjust the rear brake shoes down to where the wheels turn freely with the linings only just touching the drums. Be sure to pump the pedal a few times after adjusting, then try again.
The front wheels (pads and calipers) will just about never bind, so concentrate on the rear wheels. If you do suspect the front wheels, release the bleeder valve for just a second and then try again.
Because of the brakes locked on you could try having a few friends rock the car backwards and forwards making sure the handbrake is off and and gear lever in neutral , otherwise you will have to remove the wheels,1 at a time, and making sure the handbrake linkage is released hit the brake drum with a good hammer around the outside edge, till the drum can be levered off, if you have Disc's at the front, its best to remove the Caliber by undoing the retaining bolts, After so long you will have to renew most of the braking system,ie new rear shoe's and brake cylinders, at the front New pads and new Disc's rebuild the Calipers with new pistons and seal's,
piece of cake ,the pistons just push in front and rear ,the handbrake is inside the rear brake disk so dont forget to strip and lubrcate the operating mechanisms for the handbrake with some nice copperslip in the adjuster .Also most important is to polish it every week and clean seats with leather restorer every month after all it is a real car as its a JAGUAR
If the handbrake is fully off then check the brake fluid level and top up if necessary, if the problems still persists you need new disc pads, if this is the case do not delay as you can easily score the discs making it a very expensive repair. Good luck.