OakRidgeMack

Yes it is a R 400 with a Scania diesel. It has the ENDT475 motor.

Is a '72 R400 suitable for a Jake Brake. What would be needed to install a Jake?

RowdyRebel: You said that you bought the shifter that is shown on the left side of the first picture at the Cape Trailer store?

Also looking for a used or new TPV is someone happens to have one lying around for some reason.

Looking for a dash mountable PTO shifter. Any one have one?

AusChris: Since i cant put a clutch brake on, where would i be able to acquire a countershaft brake? There is also two PTO cover plates, one on each side, which side would you put it on?

The truck that i want to put one is doesnt have one...what is the process to install one?

Looking to install a clutch brake on to a R-400 that has a TRD77 transmission. Is there a difference between a 2 piece and a 1 piece set up? And what is entailed in order for a clutch brake to be installed?

Yea ducky: it is a R and i was just figuring out how to fix them since both sides at the bottom are rusted.

ThaddeusW,

Yes i do want to add trailer air lines. The truck is a 1972 and there already is a hand brake on the column that is hooked up to the rear service brakes of the truck.

That diagram would help me alot...and rubber air hoses will work instead of the original metal type, right?

Yea i know that there is alot of places that you can look but im just collecting thoughts on here....thanks freight....all helps to me

Yea i figure that would help right....it has a Scania ENDT475.

I have a R-400 straight truck and i am having some problems figuring out how you would connect lines to the truck line so that the towed trailer brakes worked and are also functional?

What is a cheap and effective way to repair rust damage on the bottom of the door? Is it easier to replace the whole door or can the outer skin just be changed?

What is the approximate horsepower rating for a R-400 with a turbo charger?

Does anyone happen to know the PTO model needed in conjunction with the TRD77 duplex transmission? Thanks

When i get around to fixing the wipers ill be sure to be careful......thanks for the help

The R that i have has been sitting a good 8 years being used for storage...i have recently gotten her out and been working on the various things that are wrong with it...i noticed that when you turn the wiper nob that all you here is air leaking out...its just something that i have to work on and i just was wondering if it was the same....thannks alot

Would you happen to know if that process would work for a R Model wiper motor also...are they the same?

Thanks for the diagram...if you could post the rest like Thad said that would be a great help....

Thanks alot i had absolutly no clue what they were....

Does anyone happen to know what the paint color codes were in 1972 for Mack Green and Mack Red.?

Thanks Thad....i figured that was what was worng...i wasn't sure but now i am.. thanks alot..

do you happen to know where i can pick up the little piece of metal that connects to the throttle linkage for the idle wire...it is for the idleing control in the cab..it connects right from the wire to the linkage...just a question...

That open exhaust port doesn't close when you press the pedal...air just leaks out once you press the pedal...that means that the relay valve is no good..right?

On the air line that is directly under the cab there is a relay valve i think? When you press the foot pedal air blows out of it? That means that that one is crapped out right?