M37 Brake master cylinder.

[@TheBraudCast-GerardBraud]

I'm new to auto repairs and repairing my 1952 Chevy truck. FLARE NUT WRENCH - those were the magic words I needed to hear. I had never heard of the wrench before. I spent an hour trying not to strip the nut on the break line with a traditional wrench. Then I came into the house and found your video. You mentioned the wrench in passing. I immediately ran to the store and bought a set of the wrenches and in less than :60 seconds the nut was off and the job moved quickly. THANK YOU.

[@mckwilly]

last time i ask for a caliper rebuild kit the kid said a factory has to rebuild em and we sell em...oh boy....

[@jusportel]

The Napa replacement MC does come with a different top cover, but you can just swap it with the cover from the old one. I doubt that it would work well with the civilian top cover, too much spray from the road down where it’s mounted.

[@martinbrousseau2560]

Do you have a part number ?

[@jusportel]

@@martinbrousseau2560 NAPA 544

[@martinbrousseau2560]

Thank you @@jusportel

[@frankdavidson9675]

that dont look like the master cylinder on my m37 mine has 2 port to connect brake line 1 ea front and back also has brake light switch

[@TheRedneckprepper]

Old school rocks ! NAPA is realy starting to suck on carrying the parts for us that can rebuild

[@TheRathead80]

Alright maybe you could help me with this. Mine is a M152 CDN, other than the engine most everything is the same. i have the master cylinder partly removed. the only bolt left is the one in behind the bracket. Is there a trick to removing it?

[@BornRandy62]

I have two power bleeders with a bunch of different adapter caps. it is becoming useless pretty quick due to the plastic housing master cylinder trend. there are a series of plats that fit on the top of the Master cylinder and a chain wraps around the housing. you attach a hose from the canister of the bleeder. brake fluid under air pressure flowed thru the MC and then to all of the wheel cylinders. easy way to change out brake fluid too. you start at the farthest (brake line length) from the MC and walked around bleeding wheel cylinders until the air was gone and the fluid was the right color.

[@cabotbluegill]

Rebuild a for gotten word the original recycle

[@t.jaevon]

Why is m37 mentioned in the title, but he says it's for dodge?

[@logcabinlooms]

Because the M37 is a Dodge, of the Power Wagon design.

[@t.jaevon]

@@logcabinlooms ok, I was thinking infiniti

[@hedgeapplehomestead2816]

I just bought a 53, do you have a favorite place to buy parts? I have to rebuild the master cylinder among other things

[@logcabinlooms]

Vintage Power Wagons out of Iowa carries everything for them, also I pick up odds and ends on eBay, lots of NOS parts around for them.

[@hedgeapplehomestead2816]

@@logcabinloomsthanks

[@Swarm509]

I've only once tried to rebuild a master cylinder, for my Bombardier Iltis, but the interior was very badly pitted and scratched so the rebuild did not fix the interior flowby due to the amount of honing it took.. Luckly I managed to find a New Old Stock replacement. I eneded up replacing all the brake lines at the same time, well worth the money and time to bend them. If you bought a replacement master cylinder could you maybe swap over the bolted down cap with the vent? This is assuming the are similar betwen the models in that way.

[@mrgearheadfromhell]

That is the difference between a mechanic and a parts changer, it used to be you would remove a part and rebuild it then reinstall the same part. Now days they remove the part and install some BS made in china, it's hard to find kits for starters and alternators as well. The worse part is 90% of all starters and alternators that are replaced aren't bad, they usually have a wiring issue. The number one cause of starter failure is low battery voltage caused by bad connections or corroded terminals. Toyota sells a kit for most of their starter solenoids to rebuild them for like $8.00, yet people go to the parts store and spend a lot more for a piece of junk rebuilt starter.

[@00Klingon]

+mrgearheadfromhell The same is true of the tech world. At one time, when someone said they "built a computer" they meant they got out the soldering iron and constructed all the components themselves from basic parts. Now days, people buy pre-built, made in china components and assemble them in a "tab-a goes into slot-b" production. Huge difference. When a motherboard failed, it could sometimes be fixed by replacing a series of 25¢ capacitors yourself. These days, people just go out and buy a new one.

[@logcabinlooms]

Klingon00 I find it particularly aggravating when they build all the components as part of the motherboard. It used to be if a particular part, like the video card, failed it was a simple replacement. Now when any part fails, its cheaper to replace the whole machine. I like my old desktop machine I put together years ago, I picked out every part I wanted, the motherboard I wanted, and the perfect case. Easy to keep it working, or upgrade any individual components. It cost me much more than the all in one designs available at the time, but it will last forever.

[@mwilliamshs]

You can only rebuild it if the bore is good. Keep your brake fluid clean and dry. Flush annually. If the master ever gets really bad you can have it bored and a stainless liner installed. That'll last a LONG time.

[@davephillips2731]

I learn something new from just about every one of your videos. I never knew about the gas cap vent.... thank you logcabinlooms

[@garysitek]

can't get my master cylinder to pressurize how do i bench bleed it m37 1951

[@martinbrousseau2560]

One person brake bleed requires a squirt bottle top hooked into a clear rubber hose then into a wheel cylinder bleeder. I assume a master can be bled in a similar way.

[@yoerim360]

was looking for a disassembly movie of the dodge wc52 master cylinder. sadly there is no disassemby in this movie :(

[@logcabinlooms]

Actually, I did another video on the m37 master cylinder, which is probably the same unit.

[@justinfleenor3022]

need a civilian windshield frame lower, surely you know of a rusted one?:-) ;-) need it badly got a gerstenslager 52" ambulance all original drivetrain restoring with my dad that's the only part that I can't fix because I didn't get one with the truck

[@RickNethery]

+Logcabinlooms, good Video. I like the way that Truck is built. Very sturdy Machine, that is built to last.

[@frankdavidson9675]

my m37 53 dodge is about 70 yrs old it was running in 2207 i have reg cards in dawsonvill ga . i found it in junk yard 2211 to be parted out i have replaced everthing that needed replacing now i believe i have added 50 yrs more to this truck its built like a tank very heavy duty new parts are avail from vintage power wagon in Iowa ck on line ps all it to start it was a set of points it cranked right up

[@boreholecrick7779]

Neat.

[@slowhand1198]

Remember king pin reamers?