JoeH

10 hours ago, fjh said:

 This resonant ride condition was a bit of an issue on the v8 with the ambac pump as well! The fix was a light spring om the right side rack acted as a damper for this condition ! I have never run into it on any Vmac Pumps entirly possible thou!

My 95 isn't vmac it's completely mechanical.

If you're running into problems getting parts for that engine like us with our 2 valve '79, you can always repower it with a mechanical e7 motor, or pick up a parts motor. E7 will likely bolt right in, but I'd ask around here first.  If you don't have an air ride cab, you can add that assuming your hood mounts on the firewall are rollers and your radiator support arms come off the frame instead of the firewall.  We just put a junk yard Mack's cab air ride onto a 1988 we bought. You wouldn't believe how nice air ride is on a cab.  You'll kick yourself for not doing it sooner.

Why would you sell it?  Are you upgrading?  If you are, you're going to get yourself into an expensive payment for a truck that goes to the dealer more times every year than your '86 did in it's lifetime. Meanwhile, someone else is going to be riding around making fat stacks with your old truck and you will be pining for your old truck, kicking yourself for selling it.  

If it has severe rust jacking in the double frame, you should take that seriously and consider fixes.  We bought a '95 RD that we had to remove the dump body and we took one side of the frame apart at a time to clean out the rust and sand blast and paint.  Only real cost to us was about $1000 in new frame bolts and a cracked crossmember. But we have the tools.

You may also be able to buy new rails from Mack, but that will likely cost you close to 20k after freight for all 4 rails.

7 hours ago, CDNFlatTrackFreak said:

Similar truck?

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'95 rd688s with an 8LL

Honestly I'd put the dump body up and kneel on the floor between the frame and driveshaft and do it from the back of the trans.  But I'm also 6 ft and a buck fifty soaking wet. I fit where others don't.   Obviously block the dump body so it can't drift down on you.

Interesting to read about the resonant ride... Might explain that weird flutter my 95 e7-350 does around 1200 when I'm maintaining speed with minimal power application.  Almost to 20,000 hours. 

I was always taught to rotate the engine the last few degrees to TDC in the same rotation that it turns when running so that all the timing gear lash is taken up "properly."

3 hours ago, Tron said:

Valve adjustment procedure on 02 AI350 when #1 TDC is not known, flywheel has marks 1-6..2-5..3-4..always told when 1-6 are on pointer and #2 cylinder exhaust valve is open..#1 is then at 30%ATC..then start adjustment at #1 Intake and Exhaust...  is that right? 

In general, you'd put an engine at 1-6, and intake / exhaust rockers should be loose for either 1 or 6.  The loose rockers indicate that the cylinder is at TDC, and you adjust the valve lash on that cylinder to tag specs.  If the valves were set too tight last time or the engine is still hot then there may not be any valve lash, but one of the springs on the other cylinder for the paired number should be partially depressed. Thus, you figure out who is at TDC.  Older Mack's the firing order is cast into the side of the block, not sure about newer ones. Start with whoever is at TDC and continue through the firing order from there.

Switch could just be loose. May just need to thread it back in.

Could also be a broken wire or terminal in the switch.

Interesting that you have a 2 valve tip turbine engine in an 86!

Truck is airborne going over those tracks!

That's impressive detail. Should be called Aussie Truck Simulator though to run air cleaners on the left.

On 6/22/2013 at 11:15 AM, kscarbel said:

As I mentioned above, "full lockers" as you call it was an available factory option from Mack Trucks. But it's up to the customer and/or salesman to spec it. Most Mack vocational customers never needed more than the air lock-out power divider, but the inter-wheel power divider option was also available.

Sorry to dig up an old thread but I'd love more info on full lockers.  My `95 rd688s is terrible in slick mud. It has the inter axle lock, but not an interwheel lock.  What would I have to do add interwheel locks?  Can I just swap pumpkins? Is the interwheel lock air operated? I have 44k camelback. 

Gotta realize most of what you hear coming out of war torn countries run by dictators is propaganda.  Though Islam tends to promote fanaticism, the middle east is fractured and run by local warlord and religious fanatics. Yes they hate America but they're often too busy oppressing their own people and fighting each other to be a major threat to America. Killing major terrorists is necessary to protect the world.  

Frame in good shape?

Ewwww yes they come through our yard for the dumpsters, and sometimes you can smell the juices for hours.

Not sure where in PA you are but Associated truck parts has relined weird brake shoes for us in the past, may be able to do your clutch disks too. They have a location in Gilbertsville and another in Warminster. Might have one or two other locations, not sure.

Definitely needs a good bath. Hope none of the clutch lining falls off during the process, looks like there's a bit of shrapnel hanging out there

I like the new style hood R models, but unless you have wide steer tires the hood looks weird.  The old style hood really made standard  11R22.5 and 24.5s look good.

Wouldnt mind seeing that green R model sitting there!

Flip the castleated but upside down and set it flush with stud before smacking it. Gives you more surface area to distribute the hammer blow, yielding less damage to nut & stud.

My 350 pulls more like a Chihuahua than a bulldog... But it moves along well enough

I have a mechanical e7-350, 1995. Almost 20,000 hours and the engine hasn't needed a thing yet.

On most engines, pulling valve covers and oil pan gives you visual access to almost the entire engine, and it doesn't cost anything other than a few gaskets and your time.

If it's still making a ticking noise after you've adjusted the valves then start cracking injector lines to look for a weak injector.

I had on my E7-350 a noise that sounded like the engine brake coming on, but only above 1700 rpms. Turned out to be a fuel filter clogging up. Did it again a few days later, and a second set of filters cleared it up for good!

It perplexes me that an exhaust system is so problematic. It's not that hard to buy a few 45s, 90s, some straight pipe, some clamps and some flex pipe & get the mig welder out and make what you need.  Reinforces my thoughts on todays "mechanics." They're not mechanics, they're "parts replacement specialists." CPU tells them what to replace and they replace it. Ask them to use their imagination and route a 5 inch pipe under the cab and up the back and they're useless...

DEF causes turbo to spool. Not familiar with Mack emissions trucks though. Don't know when DEF started...