b20 rear brakes

amazon69 · Sep 28th, 2008, 17:40

hello,

Anyone know where I can find a diagram of the rear brakes for a late b20
amazon? The green books/haynes(!) weirdly don't seem to cater for them. I am having trouble with mine and could do with a good schematic.
I was checking them out, couldn't get the drum off over the pads..eventually did, backed the adjuster way back in, had a hell of a job getting the drum back on over the pads which is very odd..couldn't seem to get the pads to go back in a decent amount. Other side was fine. Maybe the piston is stuck out a bit but it looked fine. I am not a fan of brakes at the moment.
Thanks for any help.
Dave

Derek UK · Sep 28th, 2008, 21:13

Hand brake cable slackened off first? Talk of pads an piston gets me worried here. Assume you mean shoes and brake cylinder pistons. As far as I'm aware there were no late changes to the rear brakes of the B20 models.

amazon69 · Sep 29th, 2008, 16:38

Hi Derek,
Yes, sorry..I did mean shoes, and brake cylinder piston.
I thought there was no change, but none of the diagrams in the books mentioned above have my layout, and the piston is a different part for the
b20 brakes apparently. I had slackened off the handbrake cable, but I think I am there now..combination of factors causing me a headache. Still not a fan of brakes though

thanks again,
Dave

Derek UK · Sep 29th, 2008, 17:28

Glad you're sorted. Had a look at the B20 parts book and the brakes are indeed different. I suspect this may be due to the dual circuit system. It looks as if the basic adjustment is via the square adjuster at the bottom and the handbrake is adjusted by a star wheel which is, I assume, accessed by a slot in the back plate. I assume this also fine tunes the position of the shoes in relation to the drum and means less travel for the brake cylinder pistons. This will also take some free play out of the pedal which is good. Handbrake cable then adjusted to give the usual 3-4 clicks I guess. I've only worked on the earlier type so this is new to me. Should be someone here who knows them better. In the mean time I'll send you a pic of the page in the parts book. Sent to D*** at nospin.

Sep 28th, 2008, 17:40	#1
amazon69 Premier Member Last Online: May 19th, 2024 22:11 Join Date: Jan 2006 Location: Falmouth	b20 rear brakes hello, Anyone know where I can find a diagram of the rear brakes for a late b20 amazon? The green books/haynes(!) weirdly don't seem to cater for them. I am having trouble with mine and could do with a good schematic. I was checking them out, couldn't get the drum off over the pads..eventually did, backed the adjuster way back in, had a hell of a job getting the drum back on over the pads which is very odd..couldn't seem to get the pads to go back in a decent amount. Other side was fine. Maybe the piston is stuck out a bit but it looked fine. I am not a fan of brakes at the moment. Thanks for any help. Dave __________________ Falmouth, Cornwall. 1970 California white 131.

Sep 29th, 2008, 16:38	#3
amazon69 Premier Member Last Online: May 19th, 2024 22:11 Join Date: Jan 2006 Location: Falmouth	Hi Derek, Yes, sorry..I did mean shoes, and brake cylinder piston. I thought there was no change, but none of the diagrams in the books mentioned above have my layout, and the piston is a different part for the b20 brakes apparently. I had slackened off the handbrake cable, but I think I am there now..combination of factors causing me a headache. Still not a fan of brakes though thanks again, Dave __________________ Falmouth, Cornwall. 1970 California white 131.

Sep 29th, 2008, 17:28	#4
Derek UK VOC Member Last Online: Yesterday 19:47 Join Date: Jul 2006 Location: Chatham	Glad you're sorted. Had a look at the B20 parts book and the brakes are indeed different. I suspect this may be due to the dual circuit system. It looks as if the basic adjustment is via the square adjuster at the bottom and the handbrake is adjusted by a star wheel which is, I assume, accessed by a slot in the back plate. I assume this also fine tunes the position of the shoes in relation to the drum and means less travel for the brake cylinder pistons. This will also take some free play out of the pedal which is good. Handbrake cable then adjusted to give the usual 3-4 clicks I guess. I've only worked on the earlier type so this is new to me. Should be someone here who knows them better. In the mean time I'll send you a pic of the page in the parts book. Sent to D*** at nospin. Last edited by Derek UK; Sep 29th, 2008 at 17:31.

Sep 28th, 2008, 21:13	#2
Derek UK VOC Member Last Online: Yesterday 19:47 Join Date: Jul 2006 Location: Chatham	Hand brake cable slackened off first? Talk of pads an piston gets me worried here. Assume you mean shoes and brake cylinder pistons. As far as I'm aware there were no late changes to the rear brakes of the B20 models.

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