M62 wrecker

[GM-M1008]

Just recently acquired a m62 wrecker bed. I know there is obsolete hydraulic fitting on the bed. I’d like to get new hoses made before I fill the system back up. Which hoses have the obsolete ends and what did everyone do to get new hoses made.
Thanks,Mike

 

[Jbulach]

Check out @WillWagner ‘s thread https://www.steelsoldiers.com/threads/the-next-project-an-asmh.216290/ you might find your answer there, as well as a lot of other cool motivation for the rest of your truck.

 

[DeMilitarized]

Basically anything that goes from soft line to hard line is the unobtanium fittings.

 

[WillWagner]

Basically anything that goes from soft line to hard line is the unobtanium fittings.

Yup. AND, there is a bunch of stuff not attached to the bed that needs to be there for the crane/bed mounted stuff to work. Crane/wrecker hydraulic pump, the air assisted governor/carburetor that work in unison to make the crane part work along with the plumbing, like a variable speed governor. The de-clutching hardware, linkage off of the passenger side of the clutch cross shaft, rotopack plumbing and hardware. IIRC, the rear winch takes totally different stuff too. There is alot going on in the M62 that isn't, ASFIK, there in the post M39 stuff.

I have seen pics of what he has. Most of the wrecker body stuff is there, but, the chassis has a ton of stuff that the M54 based truck doesn't have.

I do not know if the MACK has the capability of going from road to ASG/RSV, what ever they labeled it, for an all speed governor, meaning that if the throttle was set to 1800 RPM in the cab, the pump would hold the speed and just increase power output. The original Holley and the replacement Zenith had the provisions, air actuated governor off of the hydraulic pump governor, to regulate the governor at the carb to maintain a steady RPM and increase fuel no matter the set rpm. Think of it this way, no load engine RPM set at 1800 in the cab via the manual throttle cable. When the rear controls are engaged, there is another governor mounted to the rear hydraulic pump that when the load is increased via the hydraulics, the lower governor increases the airflow to the upper carb mounted governor and tries to keep the cab set RPM as close to where it was set without moving the throttle plate set by the upper throttle cable. 1940's technology. Today, drive by wire stuff and no moving parts.

I am by no means an expert on one of these, but, I have been elbows deep in one. I am more than happy to help out, take up close pics, whatever, to help get, hopefully, his project working.

@GM-M1008, let me know how I can help out.

 

[patracy]

I haven't had a M62, but as I recall, people were taking the damaged hoses and having the ends cut off and welded into a new modern style fitting. Not cheap to say the least.

 

[WillWagner]

I haven't had a M62, but as I recall, people were taking the damaged hoses and having the ends cut off and welded into a new modern style fitting. Not cheap to say the least.

Yup, that is what was done on the Museum's M62. Went to a normal -20 SAE fitting on the Ermeto ends and kept the NPT on the other end.

 

[swiss]

Purchase a second M62. You will need for parts to keep running

 

[Guyfang]

One is none. Two is One. Three is maybe enough.

 

[Csm Davis]

One wrecker is never even close to enough if you plan on using it. I broke 4 in five days once and wasn't being stupid on 3 of those it just happens on equipment that has so many systems and moving parts. It also lets you work one while working on and waiting for parts for the other one. And Will Wagner doesn't know of something for a five ton? WOW! You might be way in deep! Him and Wes are the men I ask for 5 ton knowledge!

 

[HDN]

Instead of trying to source the chassis parts to make a wrecker body work, are there any 24V electric pumps available that could run the hydraulics?

 

[swiss]

Instead of trying to source the chassis parts to make a wrecker body work, are there any 24V electric pumps available that could run the hydraulics?

You are going to be at the upper limits of flow with an electric pump. Would propably require a high output alternator to drive the pump and direct wiring etc. I would anticipate much slower speeds.

I would recommend purchasing an older M62, i just saw another one for sale or selling this bed and looking at another assembly such as a new 900 series etc.

 

[msgjd]

All the ermeto fittings on the M62's were supposedly a one-time factory run just for that one particular size of steel pipe on the A-W cranes... A good hyd shop can get adapter couplings so you can thread the ermeto nut on the pipe to the adapter coupling and thread a "normal" hyd fitting to the adapter

HERE ARE THE PART NUMBERS that adapted my hoist cable motor

these numbers should get you in the ballpark of where to find the right stuff for the rest of your job...

(2) Parker 10643-20-16 crimp fitts (@$33ea in 2021)
(2) Parker 10143-16-16 crimp fitts ( @$19ea in 2021)
(2) Adaptall 9605-20-L27-38x1.5 Ermeto adapters (@$90ea. in 2021)
(6ft) of (Gates?) TC16 hose at about 15 bucks a foot