E90 seized caliper bleed nipple

rk164 · 11-09-2018, 08:46 AM

Hi

I’ve just had a brake fluid service done on my E90 330 at a main dealer. They told me the bleed nipple is seized on the rear OS caliper and that the caliper needs replacing and provided a quote for this.

My question is, is replacing the caliper the only solution or could the nipple somehow be freed hopefully at a cheaper cost than replacing the caliper?

Thanks in advance

rk164

mojobmw_e90 · 11-09-2018, 09:15 AM

U can try using a nut heater to heat it up see if it brakes loose.careful using a torch as it might mess up the seals for the caliper itself

rasa bmw · 11-09-2018, 09:56 AM

just had my brake fluid changes today,,blled nipple siezed on drivers rear caliper,,but they used a pressure bleeder to do it.. and its been done so they said

Maxlude · 11-09-2018, 11:32 AM

My bro had an old pug 205 years ago where the bleed nipples were seized on all 4 calipers, it was a pita car.
Tried everything, lots of penetrating fluid...no chance...drilling the nipples out...left a mess, reverse tap...nope, gentle heat but as mentioned above couldn't get too hot for fear of knackering the seals. Then I had an idea and took them to this very old guy I knew who had a small engineering company specialising in welding. I cracked my alloy valve cover once on my Mazda 323GT when I was a student...no torque wrench back then and over zealous tightening! Anyway he proceeded to weld blobs of ally into the seized nipple until there was enough protruding to then weld a huge Tbar on...with so much more leverage the nipples popped loose. We saved 2 calipers but ruined 2 before hand. He sold his business and retired long ago but he was the dogs ;-)

11-09-2018, 08:46 AM	#1
rk164 New Member 4 Rep 16 Posts Drives: 330i Join Date: Sep 2017 Location: UK iTrader: (0)	E90 seized caliper bleed nipple Hi I’ve just had a brake fluid service done on my E90 330 at a main dealer. They told me the bleed nipple is seized on the rear OS caliper and that the caliper needs replacing and provided a quote for this. My question is, is replacing the caliper the only solution or could the nipple somehow be freed hopefully at a cheaper cost than replacing the caliper? Thanks in advance rk164
	Appreciate 0 Tweet Quote

11-09-2018, 09:15 AM	#2
mojobmw_e90 Major 380 Rep 1,496 Posts Drives: 2014 E63S Join Date: Oct 2014 Location: Chicago IL iTrader: (3)	U can try using a nut heater to heat it up see if it brakes loose.careful using a torch as it might mess up the seals for the caliper itself
	Appreciate 0 Quote

11-09-2018, 09:56 AM	#3
rasa bmw Colonel 243 Rep 2,026 Posts Drives: 640d sport/f31 330d x drive Join Date: Jul 2017 Location: northumberland iTrader: (0)	just had my brake fluid changes today,,blled nipple siezed on drivers rear caliper,,but they used a pressure bleeder to do it.. and its been done so they said Last edited by rasa bmw; 11-09-2018 at 10:31 AM..
	Appreciate 0 Quote

11-09-2018, 11:32 AM	#4
Maxlude First Lieutenant 158 Rep 308 Posts Drives: E90 330D_SE_Man, F90_M5C Join Date: Apr 2017 Location: UK iTrader: (0)	My bro had an old pug 205 years ago where the bleed nipples were seized on all 4 calipers, it was a pita car. Tried everything, lots of penetrating fluid...no chance...drilling the nipples out...left a mess, reverse tap...nope, gentle heat but as mentioned above couldn't get too hot for fear of knackering the seals. Then I had an idea and took them to this very old guy I knew who had a small engineering company specialising in welding. I cracked my alloy valve cover once on my Mazda 323GT when I was a student...no torque wrench back then and over zealous tightening! Anyway he proceeded to weld blobs of ally into the seized nipple until there was enough protruding to then weld a huge Tbar on...with so much more leverage the nipples popped loose. We saved 2 calipers but ruined 2 before hand. He sold his business and retired long ago but he was the dogs ;-)
	Appreciate 0 Quote