Cummins 855 questions

[mekanik]

CPL stands for "Control Parts List" Yes similar to arrangement number.
The six bolt heads were torqued to 475 foot pounds in 50 foot pound increments.

 

[Bluox]

All good stuff, did you happen to see the bolt torque for the 6 bolt head--Bob.

Also there is nothing about a old Cummins that's written in stone, Cummins had a tendency of
throwing parts in all sorts of cpl's and before cpl's existed.

I looked at that ,480 FT.LBS. in fact I was digging thru a tool box the other day and saw my off set 3/4 drive socket for torquing those bolts under the water manifold .Some of the head gaskets called for a hot torque.
The only good part there is only 18 verses 36 for the 855 heads.
Yea the manual had is excess of a 100 different engine numbers H HU NH NTO NHC NHCT on & on.
Ever see a NHH motor the 743 & 672 horizontal models?
Bob

 

[Bluox]

Probably a dumb question but is the cpl like an arrangement number? I’m going to call diesel west in the morning. They claim they can fix anything and it also shows a number for reman heads.

Fix everything but a broken heart and the crack of dawn.
Have the serial number for them.
If they don't have heads they should be able to repair yours.
Bob

 

[petepilot]

If any of this will help. I have parts books for most any old cummins built as well as shop manuals

 

[mekanik]

I saw a horizontal engine in a converted bus once. It looked like
a nightmare to work on.

 

[petepilot]

Just for fun heres all the different exhaust manifolds that were avail.

 

[Mike L]

And none of those are even close to what this one has on it. This engine runs a raw water system. No radiator, it draws water from the river and circulates it like an oil cooler across the coolant. The exhaust manifold has coolant in it and looks like 3”x3” square tubing with a turn on top. I’ll take pics next time I’m there.

 

[mekanik]

That sounds a lot like a marine engine.

 

[DMiller]

Marine app engine. And we routinely torqued these old 6 bolt heads with a 1" impact gun.

 

[mekanik]

Just a thought. I worked on boats a bit more than I wanted to. There were
a lot of ancient engines in boats that were still running. A marine engine
shop might have access to what you need.

 

[Truck Shop]

Cummins famous pancakes.

Some of the weirdest engines cummins built are municipal and government-Time to clean the basement.

 

[mekanik]

Getting a bit off topic. I saved a Cummins parts book for the L series.
The L series had a 7" bore and was a six cylinder. It idled at 450 rpm
max horse power was produced at 900 rpm. It used the flanged injectors very similar to the NH220
The parts book was printed in 1959
Here are a few scans out of the parts book:

 

[JLarson]

I hate industrial raw water cooling systems, they can get real gooped up, either surface water or tank, plus you can get biologicals in there too. If it was us we'd want to check any screens and the heat exchange too.

 

[Truck Shop]

The L series had a 7" bore and was a six cylinder.

Six years ago I could have bought a LR series, local airport had it in storage. It had a little over 200 hrs on
it sold for $275.00.

 

[Mike L]

Called diesel cast west. $975 per head or I could ship mine to them and have the tubes installed for $350 each and then we still would have old heads. Got the customer to agree and got them ordered. Thank you truck shop.

 

[Bluox]

Called diesel cast west. $975 per head or I could ship mine to them and have the tubes installed for $350 each and then we still would have old heads. Got the customer to agree and got them ordered. Thank you truck shop.

Is the 975 new heads ?
is the 350 rebuild yours or just coppers?
Bob

 

[Truck Shop]

Rebuilt heads for any small cam or big cam average $650 and up. So for 220's a engine that was last
mass produced in 1963-it ain't going to be cheap.

 

[Mike L]

975 is new heads. 350 is coppers and I would have to remove all the valves before I sent them.

 

[Mike L]

Dredging up an old thread I started. Got a call today for another nh220-ih fire pump engine. Fuel and coolant mixing. haven’t seen it yet but I’m probably going down the injector coppers road again?

 

[cfherrman]

Sounds like you became the ol Cummins fire pump hero in the area