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Posts posted by D-Day
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The 750 on the right probably had the bevel square seal because it has the flat top lid that seal is obsolete but a little silicone is fine to reseal and the later square seal works as well
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The gasket seal for the luberfiner 750 should be square not round like an o ring fleetguard number is 0101853s
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There was a thread on here from a couple of years ago titled engine size in 65 Mack B53 and he posted some nice pictures proof that the tip turbine will fit under the hood, I do know the front crossmember/engine mount is different also another issue is if you have a single plate clutch with the short bell housing you would want to change to a two plate clutch with a little stronger transmission to handle the higher torque rating and you would have to redrill the rear mounts through the frame relocating them farther to the rear
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I have repaired and replaced numerous aluminum frames most were KW and Peterbilt used as log trucks the extreme rough roads would brake the rails vertically near the cab the Mack rails I have only seen small horizontal cracks around the rear suspension other than scale or delaminating as some call the rot where it contacts the steel if its always been on the pavement its probably not a concern easy to check with a good light
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Also it would be a good idea to pull the wheel off and measure the splined shaft older columns were 1 1/8” splines newer shaft splines dropped to 1” not sure about 2016
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I have not seen 44 rears set up with soft bushings before but I can see it would not be to bad with a good set of polyurethane bushings if your not loading heavy regularly and maxing out the trunion shaft is the same diameter for the 38 and 44 but the axle housings can be heavier for the 44,000 check the rear right side of the housing for number code stamp for the axle housing rating
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Try John Chalmers 717-334-8709 Cashtown PA. he is in your area is super knowledgeable and has a lot of hard to find parts he should know of anything in existence and if you need anything else from a 711 I have a parts engine for spares
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The 864 was finished in 1972 and the ET 1000 did not come out until 1978 so a look at the numbers is important but it all looks good
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It doesn't look bad so I would say they should be able to cut it realign and weld it back up sometimes the housing will get twisted bad enough that it becomes very difficult to get the differential in and out especially back in just another thing to check before repair or replace decision is made.
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It looks like the Spindle is bent where it is attached to the axle housing I have seen them bent before the older ductile iron housings had a replaceable spindle press fit with a retaining bolt on the back of the housing but all of the others are welded it can be repaired or replace the housing.
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Just got a message from the local ATHS that the truck show in Cherokee tomorrow just got moved to 1501 Acquoni Road Cherokee for what ever reason
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47 minutes ago, The Rubber Duck 006 said:
I drove a 1997 Mack CH613 Gold bulldog with the Elite interior for the owner operator. I think the Mack Motor had 400hp. Pulled 34,000lbs plus 12,000lbs at 70mph no problem
32 minutes ago, Geoff Weeks said:Wind resistance and wind direction can have more effect than weight. When I pulled 48K+ re-bar loads, my mileage was closed to what I would get with an empty trailer. Sure it pulled the grades slower but it also rolled along on the down hill side much further without needing throttle, was less effected by wind gusts etc.
Because wind resistance goes to the square of speed, a little increase in speed makes a big difference in power required to move at that speed, and of course fuel to to get that power.
Thanks for the truck driver point of view on these things some of us who have never driven do not know these interesting things about trucking if you work on the sidelines its hard to imagine how it all works as a mechanic its not always easy to figure out the drivers point of view
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was just checking how did the electric B mod project come out
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Hope to see that Brockway looking as good as the H model you do some nice work there
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I was lucky enough to see the Mack finished and it is excellent I think I have an Extra turbo for that 335 if you need one, dam things are getting hard to find fast
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Also Check the ground connections between the battery and frame also coming off the engine the point where the wire end connector is crimped on to the wire as well a little corrosion between the wire and end connector hard to see but problematic
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Brake lights staying on
in Mack Truck Q & A
Posted
I can not remember the exact location of the brake light switch for a DM of that year but its common for the spring to break inside of these little switches allowing the contact points to stick together same thing with the low air pressure switch