Vintage and Classic Hondas

stuck brake bleed screw

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evanphi

stuck brake bleed screw

My 10mm brake bleed screw is stuck on my 1975 CB750. There is a fair amount of rust. I need to bleed the system, possibly do a caliper rebuild. I've sprayed the screw liberally with WD40 and let it sit overnight.

Any tips?

TOOLS1

Re: stuck brake bleed screw

Administrator

Heat.
TOOLS

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1976 CB 750-A X 2
1977 CB 750-A X 4
1977 CB 750-K
1976 CB 750 F
1981 CB 750
1966 Kawasaki SG 250
1981 KZ 750 LTD
1973 CB 350
1979 CM 185 Twinstar
1982 Honda XL 80
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shultz_1978

Re: stuck brake bleed screw

In reply to this post by evanphi

I use bolt buster or pb blaster.( WD-40 )

I use wd-40 for a cleaning lube. Not braking stuff lose.

Heat is only if you have to. But if you are rebuilding hit the heat.

Simple if some one else can, why can't I
Jamie

750K8

Re: stuck brake bleed screw

Easy, prime, perfect candidate for heat.

motogrady

Re: stuck brake bleed screw

Administrator

In reply to this post by shultz_1978

get a real small hammer, tap gently side to side afew times, on the top, side to side etc maybe 3 series .
still no go it's heat city.

evanphi

Re: stuck brake bleed screw

In reply to this post by shultz_1978

PB Blaster did it! I soaked it about 5 times last night over the span of 6 hours. I went outside this morning and gave a little twist with the 10mm wrench. Bam! It moves!

Thanks folks. This can of smelly stuff will be in my toolbox forever.