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 on: July 28, 2014, 02:29:07 PM 
Started by napamikey - Last post by napamikey
And pandora's box opens!
I like the MCI-7 due do it's structural integrity and re-powering to a different drive train seems to be a too big job. That said I only want to do this once.  How big is the job putting something else into it? How would the cooling system handle it?

I have access to a diesel shop. My buddy is the foreman but we prob only put in one day a month to these projects which is why I think pulling the engine even to inspect the head may be a good way to go.  My 5 has been sitting in the yard for almost 2 years and all we have done is replace a radiator and some panels!

 on: July 28, 2014, 02:28:11 PM 
Started by harleyman_1000 - Last post by harleyman_1000
 My bus came with a Power Tech Ultimate generator installed in it ( it only has 250 hours on it  Grin). But of course it is not correctly installed  Shocked  It is wired and runs  the house electric correctly, but starts off the start batteries, and runs them dead if left running. I am going to wire the generator to it's own battery in the compartment with it. The problem is the generator is not wired to charge any of the batteries while running. There is wires with a plug coming out the back, and a matching plug that was cut out of the rv that the generator came out of, laying on top of the generator. It has a Grey, Yellow, Green, And Blue wire. I was told by "Power Tech" that these were for the remote start in the bus. There is 3 wires coming into the generator compartment that are green, yellow, and black. Could these be for the remote start, and if so how would I wire the 3 wires to the 4 wires?  Also this generator does not have a alternator, and the technician told me a alternator would be about 800 dollars, and I could just hook up a 6 amp charger to charge the battery. Since I want to have the generator charge the house batteries( which are in 2 different compartments) what would be the best way to wire the chargers up?
  The generator wiring diagram is not on their website, since mine has the Caterpillar engine, and not the Kubota one. I have the wiring diagram, that they emailed me, but don't know how to upload it here, since it is in pdf format.

 on: July 28, 2014, 02:27:08 PM 
Started by FolkBus - Last post by luvrbus
Most 5A's just have 2 bolts to tighten the belts don't twist the bolts off those suckers are special and no one has those,Tom needs 1 and a shop quoted him 300 bucks to make it

 on: July 28, 2014, 02:26:15 PM 
Started by napamikey - Last post by bevans6
Getting the power train out if you have a fork lift is probably decent days work for one guy who's never done it before, if you find your tools first, get some big buckets for the oil and the coolant and stuff like that (I use the big rubbermaid totes), and make the cradle to lift the engine on the forks.  The hardest part for me was actually undoing the drive shaft.  Taking the head off is pretty easy, it's putting it back on that's hard.  There isn't actually a head gasket, there are fire rings to seal the top of the cylinders and rubber o-rings for everything else.  The hard part of replacing the head is it's bloody heavy and you need to set it down right on the block, and you need to run the rack to set up all the injectors and valves.  Easy if you can follow the instructions in the book.

The MC-7 has a lot more room in the engine bay than your MC-5, so it would be fairly easy to pull the heads without pulling the engine.  Use an engine hoist to lift them.

Edit, Clifford works harder than I do, obviously!   Grin  Speaking which, did you ever put my aftercooler (my wife calls it the afterburner) kit together?  Can I send you something for shipping/


 on: July 28, 2014, 02:20:24 PM 
Started by napamikey - Last post by luvrbus
4 hrs max with one person, while I dearly love the old 2 stroke engine I would not spend a lot of money on a 8v71 you can buy the Gillig transit with a series 50 and B400 Allison for 2000 to 5000 and have all the parts for a modern power train and better fuel mileage then sell the rest for scrap.LOL and I don't even like a 50 series but common sense with a T drive it is the way to go, you can spend big bucks nowadays overhauling a 8v71 and still have a 8v71, don't laugh Jack Campbell  Roll Eyes

 on: July 28, 2014, 02:15:13 PM 
Started by FolkBus - Last post by bevans6
You might be able to find replacement mounting rubbers at an industrial supply place like McMaster Carr, that is where I would start if the usual sources like Luke at US Coach come up dry.  As far as the tension, I presume you don't have the stock air cylinder so you have a turnbuckle of some sort.  I would just add tension until the belts stop whipping at idle and when you rev the engine, it doesn't take a whole lot.


 on: July 28, 2014, 02:01:36 PM 
Started by napamikey - Last post by napamikey
By easy do you mean 5 hours or 15 hours?  I have a 5a but have only done maintenance thus far, just want to make sure I'm not biting off more than I can chew Smiley  The thing is I have a shop I can do the work but I cannot store bus in the shop.  Was thinking it would be a lot easier to keep bus in the yard and do the engine work in the shop rather than towing bus back and forth  Smiley

Thanks again!

 on: July 28, 2014, 01:55:31 PM 
Started by Ed Hackenbruch - Last post by Ed Hackenbruch
Going slowly......they were told that one of the heads would be on back order. Turns out today both of them are on back order and we are #12 on the list. May have found a set locally, waiting on a call back on price. Also have to see what we can work out on warranty coverage.  Probably at least a week, maybe two before we hit the road again......

 on: July 28, 2014, 01:50:46 PM 
Started by napamikey - Last post by luvrbus
Engines are easy to pull on MCI's pull the air covers and take a look it may not need overhauling and heads are not that bad to remove with the engine in the bus fwiw

good luck

 on: July 28, 2014, 01:44:15 PM 
Started by napamikey - Last post by napamikey
Yep. water in oil.  Sorry.  How hard is it to pull engine out to rebuild or fix?

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