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Old 09-24-2014, 02:43 PM   #1
Mini-Skoolie
 
Join Date: Sep 2014
Location: Portland, OR.
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Year: 1972
Coachwork: Homemade
Chassis: Crown Supercoach
Engine: Cummins NHH 220, E-F10spd
NHH 220 pancake in Crown coach questions

hey everybody, this forum has been very helpful and now Ive got some questions. i have never worked on such a big engine or a diesel to boot.
I have the 143 Motor, NHH 220 with the Eaton-Fuller 10spd under a 72 Crown Supercoach.
it sat parked for a year before i got her, and i noticed the oil marks on the engine, trans, and diff, is this normal?







this is the gauge cluster after a drive on the highway, anything look out of the ordinary?



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Old 09-24-2014, 04:44 PM   #2
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Re: NHH 220 pancake in Crown coach questions

Oil marks look to be just the seals weeping. After so many years the seals on everything will start to get old and weep a little bit of fluid like that. I wouldn't worry about it unless you have a good sized puddle of fluid underneath. Just keep all the fluids topped off. From the gauges it looks like your alternator isn't charging, or the gauge is junk. Have somebody test it out to be sure or you might end up stranded next time you need to start it. Your water temp looks a little low too but you never said how far you drove it. I wouldn't worry about it, just get the alternator checked for sure.
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Old 09-24-2014, 04:57 PM   #3
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Re: NHH 220 pancake in Crown coach questions

Some guys would pay to have such minimal oil leaks.
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Old 09-24-2014, 05:05 PM   #4
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Re: NHH 220 pancake in Crown coach questions

OH THOSE ARE HORRIBLE OIL LEAKS. I will take that bus off your hands for you so you don't have to deal with it.

Don't fret those. Now show some pic's of the rest of the bus!
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Old 09-25-2014, 01:05 PM   #5
Mini-Skoolie
 
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Location: Portland, OR.
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Year: 1972
Coachwork: Homemade
Chassis: Crown Supercoach
Engine: Cummins NHH 220, E-F10spd
Re: NHH 220 pancake in Crown coach questions

Thanks guys, the gauge cluster picture was after a 5 min warmup, 5 min surface streets then 5 min on the highway doing 55.
The alternator is a leese Neville and it only puts out 14v above 1k Rpms, is that acceptable?

After buying this critter I went down to drive it home, we'll the darn thing would not start after such a perfect test drive a week earlier. I charged the batteries and started checking the usual stuff, fluids good, fuel in tank, starter getting juice, wires have continuity, then the batteries. I put the multimeter between the battery post and the pos lead, they had a parasitic draw of .04 amps and 1.04 volts.
Long story shortened slightly, the pos wire to the fuel relay on the pump was grounded to the frame. Not sure where or how it just has continuity to the frame somewhere along the run from the relay to the ignition up front.
I put in a jumper from the battery to the relay and disconnected the old wire, Vroom it clattered to life! And made it the 45 Minuit drive to my house.






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Old 09-25-2014, 01:35 PM   #6
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Re: NHH 220 pancake in Crown coach questions

Glad you made it.

With that tire on the front, it is just BEGGING to put VW swooped stripes on the front and a tire cover with the crown logo inside a circle VW-esque.
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Old 09-25-2014, 06:09 PM   #7
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Chassis: Crown Supercoach
Engine: Cummins NHH 220, E-F10spd
Re: NHH 220 pancake in Crown coach questions

I'm thinking my dirtbike would fit nicely in that tires place...... Spares are overrated right?
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Old 09-25-2014, 08:13 PM   #8
r_w
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Re: NHH 220 pancake in Crown coach questions

I like it as a crumple zone. The one thing that scares me most about a flatnose is getting a deer in my lap while driving at night.
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Old 09-26-2014, 01:37 PM   #9
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Re: NHH 220 pancake in Crown coach questions

Is it 14v from that gauge or 14v from a voltmeter? I've seen other alternators do that, but at idle after driving for 15 minutes, you should have a minimum of 12.6 volts which is full battery voltage. The fact that the gauge was reading 10.5 shows that either the gauge isn't reading right, the alternator didn't charge during the trip, or that you have some sort of load on the system. I seen that and took a guess and assumed that the alternator wasn't charging.
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Old 09-26-2014, 07:35 PM   #10
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Get the alternator check first

The voltage from an alternator only must exceed the battery voltage. There is a problem with the alternator or some wiring is not good. Crown buses use a relay which operates the starter solenoid. Use a multimeter and check for poor connections. A fully charged battery is 12.6 volts and a battery 75% discharged will show 12 volts. Frank
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