| |
Click on image for the lowdown. 
====
| | | Forums66 Topics128,164 Posts1,056,982 Members48,458 | | 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!
| | THANKS!
For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Nov 2011 Posts: 1,611 'Bolter | | 'Bolter Joined: Nov 2011 Posts: 1,611 | Hey guys,
Yesterday I just happened to walk by my 41 and noticed some liquid ponding on the RF rim. Investigation revealed that the wheel cylinder bleeder screw is not seating. I backed out the screw, and retightened as an attempt to "reseat" the screw but it is still weeping. The cylinder is original to the truck (Delco) and has been resleeved with stainless about 2 years ago but with little mileage. Don't rebuilders examine/rebuild the bleeder seats? The bleeder screw is new. The other three corners seem fine.
What can be done to solve this type of leak less removal of the cylinder?
Paul
| | | | | Joined: Nov 2005 Posts: 6,100 'Bolter | | 'Bolter Joined: Nov 2005 Posts: 6,100 | Hy Paul_WNC, I suppose you could remove the bleed screw and check it for damage and replace it if you find any. If the screw is okay then the seat in the wheel cylinder could be damaged, or perhaps a chip from the machining process is trapped in the bore. | | | | | Joined: Feb 2004 Posts: 29,865 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,865 | Chuck the bleeder screw in a drill press and use a file to make a slightly sharper angle on the tapered part of the screw that seats against the wheel cylinder body. It might need to seat against a different spot on the cylinder casting.
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!
| | | | | Joined: Nov 2011 Posts: 1,611 'Bolter | | 'Bolter Joined: Nov 2011 Posts: 1,611 | I suppose the "art" of repairing machinery is to start with easy/common repairs and work towards the more difficult until the problem is fixed. But with brakes, even a small leak is a big leak. 3B, lets hope I am lucky and it is nothing more than a bit of debris. Removal of the bleeder should reveal some evidence of seating/non-seating. I will get another bleeder screw before I tear into this. Jerry, your remedy has all of the ingenuity I have learned to expect from you; I will use your idea as plan "B".
Thanks guys!
Paul | | | | | Joined: Jan 2013 Posts: 603 Shop Shark | | Shop Shark Joined: Jan 2013 Posts: 603 | On the subject of bleeder screws. I replaced all 8 of the wheel cylinders on the GMC 370. It takes a total of 4 sizes of wrenches to bleed them, including the Hydro. A 7/16- 3/8- 10mm and a 9mm. So go figure? Rebuilt stuff from who knows where? Also new stuff?
57 GMC LCF 370 55 John Deere 40-W 59 John Deere 430-W 2000 GMC 4x4 56 John Deere 420-W Pix on Photobucket | | |
|
|
| |
