JoeH
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Everything posted by JoeH
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I'm wondering if there's a fuel delivery/ignition issue? Loading up fuel in one cylinder from poor atomization in a failing nozzle, or there's a hot spot on one piston that occasionally causes an untimely detonation. Our 1979 endt676 had a slight miss when my dad bought it, wound up being a piece of silicone stuck in the piston cooling nozzle. But that was before I was born, so just anecdotal on my part... Just throwing out dumb ideas...
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2007 CTP713 no start due to communications
JoeH replied to 96bulldogpower's topic in Engine and Transmission
I know you're working on the Volvo engine, but at the end of the day they all do the same thing. -
2007 CTP713 no start due to communications
JoeH replied to 96bulldogpower's topic in Engine and Transmission
My 2003 ai350 had a loose EECU fuse. Check your fuse boxes and see if wiggling your EECU fuse helps out. Also check your battery voltages. The vmac iii EECU shuts off around 9.5 volts, so if your power drops notably while cranking then you could just have battery issues. It's possible your alternator died and batteries dropped down, but I assume that'd trigger a code.... -
Im 5'11" and the backs of my knees start to burn when I reach down halfway down my shins, lol. 15 years in R models has shortened the tendons and muscles on the backs of my legs! The +3 can was likely introduced at the same time Mack went from the steel dash to the plastic curved dash.
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Cabs are the same on U and DM. However, the R/U/DM cab started out early as a "flat back" cab, then they updated the cab to a "+3 inch" back wall. They added 3 inches to the back wall to allow more seat room. Not sure how long the U model was I'm production, don't know which backwall our U had, i gave the cab off to someone on here some years ago.
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Saw one in person today for the first time. Awful, lol.
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The frame rails on my dm686sx are 3/8 inch thick, both inner and outer. So each side has 3/4 inch total frame thickness.
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We cracked one frame rail vertically on our 79 R600 at the frame splay, and had a 1976 U600 parts truck. Cut each rail (broken and donor) behind the cab, welded them together and put a sister plate (which the truck already had bolted to it) and everything lined up perfect. Spring mounts, steering gear box, shock bracket, etc.
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Largely I would bet the offset cab was to shorten wheelbase for city driving and job site maneuvering. Rather than retool manufacturing for a whole different cab I'll bet they just modified existing tooling to produce the offset and put the drivers feet next to the engine.
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U models had the same frame as the R600 single frame. DM had a much heavier double frame, with a tall profile from the steering box back behind the cab, and the frame height tapered to "normal" somewhere after the cab and before the rear tandem. I think they were primarily used for concrete barrel mixers and dump trucks.
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I live for these pictures. The Run/Walk one, these people around Biden letting him do this to himself are guilty of Elder Abuse. But I think he's quite happy being used as a Useful Idiot...
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Not sure how long the probation period is on new accounts but post a picture when you can of the fuel pump area.
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F-700 complete truck
JoeH replied to 74 KW's topic in Antique and Classic Mack Trucks General Discussion
Pictures would be great, as well as more info on why it was parked, what year, etc. I have a tenant looking for a non CDL truck to put his crane body onto. -
87 superliner with AMBAC 300 Injector Pump
JoeH replied to bmking16's topic in Engine and Transmission
Shame he never got a response. Does @fjh or @Joey Mack know how? I thought a cover had to get pulled on gov housing or something to get it moving. -
Can you post a picture of your old radiator?
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You'd need an overflow tank I believe.
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Does that radiator pass a pressure test?
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If you swap EUPs around do the faults stay with the EUPs or the cylinder locations?
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Cracked nozzles not atomizing fuel? Blink codes I can understand, these MID codes are jargon to me. Sounds like 2 EUPs are not getting proper signal, so either bad wiring or bad EUPs?
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That's the Heinz I was looking for
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@heinz57 if Heinz knows how to look up the old VIN's he may be able to help you out. I don't think cam is available from Mack anymore. Also, you should be able to send your camshaft to Berry Cams, they should be able to repair your damaged lobe. http://www.berrycammn.com/ 320-395-2377 I have never used them, but it's worth a call.
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going to buy a new driver's seat
JoeH replied to Hook n ladder 1's topic in Exterior, Cab, Accessories and Detailing
I have one of those legacy seats in my 95 RD688. Great seat, way better than the bostroms in the other trucks. Have to take the left armrest off as it interferes with seatbelt, and after leaning on the right armrest for 6 years we had to take that one off as it finally deformed enough that it started catching the "lo lo" switch on our 8LL gear shifter when going from 1st to 2nd. Other than that it is a great seat! -
That sounds like a bit more of a miss than my truck's flutter. Almost sounds like a knock? But I will admit to not having hardly any experience with engine knocks/misses, and my phone has crappy speaker audio.
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2005 CHN613 ASET 427 power/torque/boost loss PLEASE HELP
JoeH replied to TorresTransport's topic in Engine and Transmission
I believe it's a Pressure Regulator on the fuel return. Maintains fuel supply pressure in the block gallery to keep fuel pressure adequately supplied to the EUPs. Probably a few different air compressor brands that are interchangeable. If it's operating well and the truck's air system maintains air pressure safely then run it. -
Was it a stutter or a flutter? Governor springs can cause the engine to flutter at midrange RPMs. My front end loader has been doing it a lot lately, revved up coasting at minimal load the RPMs flutter. My 95 e7-350 (fully mechanical) will do a similar flutter in that 1300 + or - range coasting minimal load every so often. Truck runs great otherwise. Maybe the truck you looked at is doing the same thing mine does or maybe it could use a fuel filter.
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