58GreenMackB Posted December 24, 2017 Share Posted December 24, 2017 Good evening all. I got to this point on my truck and have a few questions to get things buttoned up. The gold adjusters on the lower left hand side of the picture I tried to put back just like I had them when I removed the brakes to rebuild the axle. Is there a procedure for adjusting these? I could not find anything in the Highway Vehicle Service manual. One other question is related to air fittings that I need some clarification on. I bought DOT approved flexible air lines for the front and rear of the truck to replace the old and worn out ones. I was wondering if there is also a DOT specification for the brass air line fittings? I did some googling on it, but only found information on flexible plastic line brass connectors. I know that the burst pressure on most brass fittings far exceeds brake service, but want to make sure everything is proper as I put this thing back together. Thanks in advance! Quote Link to comment https://www.bigmacktrucks.com/topic/52030-b61-brake-questions/ Share on other sites More sharing options...
Swishy Posted December 24, 2017 Share Posted December 24, 2017 Greeny gudday m8 think n U fit the brake drum /n hub with bearings n adjust az per normal then adjust up the 'S' cam slak adjuster till it sounds like the linings R just tuch n the drum then adjust the anchor pins till they grab the drum back off a tuch .... do up the anchor pin lock nut... adjust 'S' cam slakee to u're desired tuch The adjustable anchor pins R made to take up any gaps wen usein older worn drums etc MeThinx cya §wishy Quote Link to comment https://www.bigmacktrucks.com/topic/52030-b61-brake-questions/#findComment-388079 Share on other sites More sharing options...
58GreenMackB Posted December 24, 2017 Author Share Posted December 24, 2017 Not that scientific, but makes sense. Thanks Quote Link to comment https://www.bigmacktrucks.com/topic/52030-b61-brake-questions/#findComment-388081 Share on other sites More sharing options...
h67st Posted December 24, 2017 Share Posted December 24, 2017 We always tightened the slack until the shoes touched the drum, then backed off 1/4 turn. I don't have experience with adjustable anchor pins, but it sounds like Swishy has. Quote Link to comment https://www.bigmacktrucks.com/topic/52030-b61-brake-questions/#findComment-388084 Share on other sites More sharing options...
kevink1955 Posted December 24, 2017 Share Posted December 24, 2017 (edited) I see a jack stand under there but please be careful using cement blocks as jack supports. They can fail without warning, I do see that you have it cores vertical and have something under the jack to spread out the weight but all it takes is a slight imbalance to cause the block to fracture. Please be carefull. Wish I could help with the brake question but I do not know. If the rest of that truck winds up as clean as the brakes it will be a real nice rig. Edited December 24, 2017 by kevink1955 reversed words 1 Quote Link to comment https://www.bigmacktrucks.com/topic/52030-b61-brake-questions/#findComment-388085 Share on other sites More sharing options...
topo Posted December 24, 2017 Share Posted December 24, 2017 I have 1954 Military wrecker lowboy M269 with s cam air brakes with adjustable anchor pin . To adjust the drum has a hole in it covered with a small cover (hope you have this on your drum ) with this cover removed turn the drum 1 1/2 inches from the end of the shoe lining and use a feeler gage 0.005 between shoe and drum and tighten the locknut . Then turn the drum to the cam side 1 1/2 inches from the end of the brake lining and use a 0.010 feeler gage and adjust the slack adjuster . Quote Link to comment https://www.bigmacktrucks.com/topic/52030-b61-brake-questions/#findComment-388090 Share on other sites More sharing options...
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