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Mod | | | Forums66 Topics128,136 Posts1,056,745 Members48,454 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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| | | | Joined: Jun 2012 Posts: 166 'Bolter | | 'Bolter Joined: Jun 2012 Posts: 166 | Due to rust, I couldn't get my cylinder filler top off my reservoir so I took it out from under the truck thinking I could drill into it and put a tap into it and
back it out. That didn't work so now I have a master cylinder with a hole in the filler top that still won't come off. I am not sure if the cylinder is bad or not,
but from the previous owner I was led to think it was ok. Anyway, I'm not sure what to do now. I don't think the top will come off as it is rusted on so badly and a shop
has tried with no luck. Does anyone have any ideas for me ?
Thanks | | | | | Joined: Jun 2011 Posts: 5,096 Crusing in the Passing Lane | | Crusing in the Passing Lane Joined: Jun 2011 Posts: 5,096 | Heat from the top, need to be willing to sacrifice top, might have to split and peel off.
Ed
'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires.
'47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle.
'54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed.
'55 GMC 370 w/270, 420 4 speed, grain, dump bed truck from ND. Works OK.
| | | | | Joined: Jun 2012 Posts: 166 'Bolter | | 'Bolter Joined: Jun 2012 Posts: 166 | Thanks Ed, I will try heating one more time. I appreciate the response !
Troy | | | | | Joined: Apr 2005 Posts: 7,441 Bolter | | Bolter Joined: Apr 2005 Posts: 7,441 | Since you have it out, why not soak it in rust remover for a day or two, then try again? ðŸ›
Martin
'62 Chevy C-10 Stepside Shortbed (Restomod in progress)
'47 Chevy 3100 5 Window (long term project)
‘65 Chevy Biscayne (Emily)
‘39 Dodge Business Coupe (Clarence)
“I fought the law and the law won" now I are a retired one!
Support those brave men/women who stand the "Thin Blue Line"! Hug a cop!
USAF 1965-1969 Weather Observation Tech (I got paid to look at the clouds)
| | | | | Joined: Jun 2012 Posts: 166 'Bolter | | 'Bolter Joined: Jun 2012 Posts: 166 | I will try that too. I’m sure open to all suggestions at this point.
Thank you sir | | | | | Joined: Jan 2009 Posts: 5 New Guy | | New Guy Joined: Jan 2009 Posts: 5 | If all else fails consider mig welding a nut to it. Between the heat and additional torque using a wrench???done similar with the lock ing lugnuts that need a key. | | | | | Joined: Jun 2012 Posts: 166 'Bolter | | 'Bolter Joined: Jun 2012 Posts: 166 | Thanks tlm for the suggestion, I appreciate it ! | | |
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