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Replacement Brake chamber and there size for an M123A1C So after Topo brought up the thought that maybe the 30/30 brake chambers might be to small, it starting my own doubts as well. The next size up brake cans would be the 36/36's for the princely sum of about $150/each. And then the...

Neglected to mention that after the adjustment of the clevis at the delivery valve and the road test, I removed the service air line at a rear can and re-measured the air pressure just to make sure I didn't have a PRESSURE restriction at the quick dump or double check valve. Pressure was still...

Results of investigation for lack of braking power So this morning I pulled the SERVICE BRAKE AIR SUPPLY line off of the quick release valve and had a competent person MASH DA BRAKES with 100 PSI of air in the tanks. I had an external air line off of the station compressor charging the tanks...

No, the M123A1C that has been converted to our Forestry tanker is it. We only have a few guys who are qualified to drive it........I should say that I will let drive it. Straight cut gears on the tranny and it seems the latest generation of firefighters has been brought up on Auto Tranny's...

PIC of our Forestry Tanker (BIGFOOT) while doing tank repair last year I have some better photos on the computer at the station. I thought I had some on my laptop, but I can't find them. I will post what I find out about the brakes after I figure out what is going on with them. Anyone know...

Thank you............now if I can get the rest of the guys to see what I see, then the battle would be won. The responses of "....It's always been like that, what's the problem??!!", ".........the truck only goes out on a few calls a year, why the big deal?? " ('cause when you've got 30k of...

Thanks NDT........that was what I was going to try on Monday. And thank you for clarifying what the service line was for me, I wasn't quite sure so that's why I pulled the line right off the can. That way I know exactly what I'm getting at the can for pressure. No guessing!! And thank you...

Found the AIR BRAKE CIRCUIT DIAGRAM in the Lube Order. Still digging..............

Hey guys...........long time listener, first time caller!! My Fire Dept has an M123A1C that was converted to a forestry tanker. I've taken over as maintenance officer, chief wrench turner a few years ago and noticed that the thing didn't stop for crap. The brakes were WAY out of adjustment, a...