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The s-cam tubes were pre-assembled. However, I did check to see how the seals are installed. Both seal lips face toward the slack adjuster. So, we are good there.

Thanks for the tips. Yes, anti-seize is my friend. I keep the large bottle on tap. I have had my fill of seized parts on my truck. So, you are so very right about 'so very preventative'. Thanks for the seal tip. The s-cams are marked 'Q-Plus'. If you would, give me some recommendations on...

Yeah, the inboards do have their drawbacks. I haven't yet pinned down an outboard retrofit for the Rockwell top loaders. They would definitely make life easier. The problem is the hubs. If the hub flange was set inboard further it could be done with a slightly deeper drum. The spiders in this...

M-809-series do not use the diode. It's just straight wired. Any clue as to why the M939-series added that?

These are the diagrams from Bendix which I will be using with slight modification. For instance, the front quick release valve (QR-1) will be replaced by a front axle ratio valve (LQ-4). I also have to tie in the front and rear service gladhands. The emergencies will be self-explanatory. My...

Last week I tackled the dis-assembly of the front brakes so I could inspect the plungers for serviceability. I was waiting on a brake spring tool I had ordered to simplify the job. Actuating plungers and anchor plungers were all serviceable and required minimal cleaning. The spiders were a mess...

In this thread I will be discussing, hopefully in some detail, the conversion of my M818 to full dual circuit air brakes. I plan to post up as I progress with the installation. This mod should work for all M809-series and M39-series 5-ton trucks. The air assisted hydraulic brakes, as delivered...

I disassembled, cleaned and reassembled, with new plunger seals and grease, the M939-series front brakes I picked up a couple of weeks back for my air brake conversion project. The air chambers received new diaphragms and collet nuts. This is a before shot.... I started a thread in 5-Ton...

Sorry for the vertical format. I apologize for any neck pain ;) And, here's my helper...

I replaced the wire in an M818 steering column. I know we are talking about two different trucks, but I think their construction may be similar. The whole inner shaft can removed on my truck which facilitates changing out the wire. I am attaching a copy of the instructions that spell out the...

I will be completely removing the hydraulic brake system to include the air-pack and master cylinder. I have been contemplating and studying dual circuit air brakes for some time now. Even the most well maintained single circuit brake system can have dire results when there is a catastrophic...

I received my rear tandems s-cam air brake kit! Some assembly required, your parents have to put it together ;) It even comes with brand new seals and wheelstuds! All wrapped in this neat little (946 lbs.) package. Yep. I confess. I am also an garden railroader. I have two sicknesses ;)...

Better flip her back over first! OR, all that purty new paint's gonna drip right off into the sky ;)

Inverted flare on the M809-series. 1/2" supply and 3/8" return. I believe the M939-series is the same. http://www.discounthydraulichose.com/Inverted_Flare_Hydraulic_Tube_Fittings_s/241.htm

M931 Air Brakes for M818 I picked up some front axle brake parts from an M931A1 donor truck this past Thursday morning up in the California High Desert. I am converting my M818 to full air brakes and have decided on wedge brakes for the front due to ease of installation without modification...

Make sure you open it up and feed the little gremlin inside ever so often. Ya' don't want him cranky ;)

No, actually it's kinda' groovy!

I have two of these. I found one used on eBay for a decent price. It doesn't show on the webpage, but it has a slot on the back side for easy handling and to run a chain through if you need to secure them. They work nicely with 11.00R20's. https://www.chocks.com/product/hwc7

Good news...fairly easy fix :) Bad news...not the cheapest part :(

I have a pintle left over from when I had the tow bar in my old bed. I haven't devised an effective way to use it with the new storage.