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Years ago I was told that they used 1/3 of the weight it took to fail .

I think the brass bolts are a one time use only  they will go on but strip when backed off . years back when bolting on pads the small bolts would self strip the 3/8 or 7/16  bolts on the MACK and Rockwell axles where just broken off with a cross pin hammer.

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When  removing lots  rivets grind off the head on one side  drill 3/16 hole 3/4 of the way through the rivet then go back and drill them out to 5/16 use a 1/4 inch punch this will let the rivet  collapse to the inside  with larger rivets go with a larger hole till you find what works

The rubber blocks move enough to wear a hole through the bottom of the of the housing and get replaced. they are used on the suspensions with springs and the suspensions with the solid walking beam .

The push rod coming out of the brake chamber may need be longer then the one in use now .

A month ago I went To a local Truck salvage yard to get some filter parts and look around I found the yard had been closed I went to see the owner and ask him about some parts and we went to see what we could find on the way over there he said that he had sold all Mack engines and engine parts to some one that was sending them all to Vietnam 3 truck loads old and newer engines and parts . I looked around and nothing Mack remained .

Thank you I will start looking

Looking for a clamp for a ENDT 673 p full flow oil filter  this housing has the two large 1inch hoses coming out the bottom and one smaller hose coming out the bottom . my old clamp has split and is leaking. 

In 1980 or 1981 I drove two superliners with the 400 cummins  with 5x4 transmission and both came from the factory with out the 4 speed hooked up the dealer had to do the linkage and mount the stick in the cab . some mechanics use two long shift rails and some use four shorter shift rails with a mount in the middle when setting up the linkage it depends what is in the way .

I have had problems with trucks with the aeroquip fuel line . The thin inside lining separated from the thicker rubber part of the hose .Truck would just die let it seat a short time it would start and run  till the liner would collapse and stop the flow of fuel no fuel leak or bad place on the hose . I cut up the hose and found the separated part of the hose happened where it was close to the exhaust pipe over time it must have broke down from the heat .

Baldwin filter # P706-m . I had trouble getting my filter to seal  it did seal after a few try's of tapping on the clamp and turning the nut a little  at a time . I though of wrapping the o ring with Teflon tape . the clamp must spread over time with over  tightening .

With the parts on your engine now changing to a 675 or 676 it should work the injector lines  may interfere  with the water manifold your 673 has the line come in from the side and the other engines they come in from the top. in the truck you don't have much space between the hood and thermostat housing .

When looking for # 2 clutch parts for a military Mack that has a 1 3/4 input shaft I came across a Mack transmission with a 1 5/8 input shaft it had been bolted up to a 675 .

I brought home a Mack 675 a few years ago that had a Quidbox on it it was not original . The bell housing was a SAE # 2 and had 3/8 bolts I think SAE# 1 bell housings have 7/16 bolts both have 12 bolts . I returned the Quidbox to the salvage yard I needed the fly wheel for my 673 the input shaft on the Quidbox was 1 1/2 or 15/8 in diameter I don't remember . when looking at older Mack parts you never know that you will find bolted together .

I have a Northstar and after 7 years I had to replace the unloader valve ordring parts from Northstar is easy . I really like the Honda engine it starts so easy winter or summer .

What horse power and torque is the end p ?

To check for diesel in the oil you can put a drop of oil off of the dip stick on to a hot turbo diesel will evaporate real quick and oil will not .

A machine shop should be able to make one .I don't remember what if the shaft was 1 7/8 or 1 15/16 .

Leversole there is a heater on Ebay with some good pictures of the same heater you have it shows the back side . search Mack 673 or mack block heater .

This truck has a belt driven power steering pump . Was this standard be for they where mounted behind the air compressor ?

dual flow baldwin P706-M $ 29.55 I just put one on my truck

I have been working on putting a ENDT 673 E in a military truck.It has no piston oilers the turbo that was on it original mack part # 631GC487P1 The Garrett replacement part # 631GC4101P17X this turbo is also used on the mack 675 RC my parts engine .

Will this exhaust manifold fit my ENDT 673 ? I need to lower the cross over pipe so the hood will close .

In the 5 years I ran my multifuel I used used motor oil mixed with gasoline and diesel or just mixing used motor oil and diesel It liked the oil in both mixes . plain diesel seamed to have been kind of dry .

I'm have been working on changing out my multifuel and putting in a mack 673 . To me it's no comparison in reliability . bob tail they are not to bad but add a trailer with 5000 gallons of water and it gut less .