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Old 06-06-2017, 10:59 PM   #1
Mini-Skoolie
 
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Join Date: Apr 2017
Location: San Francisco
Posts: 52
Year: 1974
Coachwork: Crown
Chassis: Supercoach - Single Axle
Engine: Cummins NH-250, Fuller T-905M
1974 Crown - Cloudhorse

Hello All,

We recently picked up this 1974 Crown outside of Sacramento. 5 Speed. Cummins. Pretty good shape. Not all the oil stays in the motor. Front end makes some noises it shouldn't. My son named it Cloudhorse. Going to fix it up to bring some fun into family trips to the Eastern Sierra.

Took our first trip from San Francisco up to Guernville (75 miles) the day after purchase. Figured likely we'd get stranded somewhere. We did - though fortunately it was at our destination. Made a test light from an extra bulb rolling around, and some leads dangling from the batteries. Debugged the ignition circuit at the solenoid lead - nothing happening there. Jumper cable from the battery to the solenoid lead and it fired right. Family loves that we have to get out and walk around the bus, open the battery compartment, and touch leads together to start. Fun for all.

First big job is a wheel bearing in the front end. Thoughts on where to get parts for that?

I've already had a dream about dealing with the rusted lug nuts. Figure some 'liquid wrench' and an impact wrench. Probably a nut splitter and a tap to chase the threads on hand.

Anyhow - hello all. Appreciate the site.
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Old 06-06-2017, 11:16 PM   #2
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Join Date: Nov 2015
Location: Midwest
Posts: 551
Year: 2003
Coachwork: BlueBird
Chassis: TC2000
Engine: 5.9L Cummins
Rated Cap: '00
Cool bus. Welcome !

I like PB Blaster for rusted nuts- spray each day once/twice for few days. I tap them a bit, not sure if it helps. Wire-brush exposed threads. bit of direct heat, if careful not to overdo it. Replace bad nuts.

That's a lot of big, hard nuts to be splittin.
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Old 06-06-2017, 11:18 PM   #3
Mini-Skoolie
 
Join Date: May 2017
Location: San Francisco
Posts: 16
Year: 1972
Engine: Cummins NH220
Me too!

Hi there!
I just bought the exact same bus in Riverside, CA, a 1972 Crown bus with Cummins 220. It's still there at the moment but it so happens I plan to leave the bus in the Sierra foothills too! Mariposa side though.

Have you been running it a lot since this post? Would love to join forces on fixing them up. Let me know!
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Old 06-06-2017, 11:18 PM   #4
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Join Date: Feb 2016
Location: Willamina, Oregon
Posts: 4,410
Year: 1997
Coachwork: Bluebird
Chassis: TC 1000
Engine: 5.9
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Welcome

That's an interesting story. Can't wait to see your build take off Darn nice bus to start with too.
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Old 06-06-2017, 11:24 PM   #5
Bus Nut
 
Join Date: Jun 2016
Location: Orange County, CA
Posts: 324
Year: 1990
Coachwork: integral
Chassis: Crown Supercoach II
Engine: Detroit 6V92TAC, DDEC 2, Jake brake, Allison HT740
Rated Cap: 37,400 lbs GVWR
Congrats on the bus!

You need to find out what make of axles it has. Older Crowns used Timken, less old Crowns used Rockwell, but Crown sometimes installed whatever they had lying around if the customer didn't specify, so who knows what you have? Once you know what you have, then a trip to your local friendly heavy truck parts supplier should get you what you need. Sometimes even NAPA has stuff like that. Definitely get the wheel bearings fixed ASAP - the consequences of a seized bearing are not fun, plus you'll probably ruin the spindle as well.

A torque multiplier should get the lug nuts off, along with some careful heat. And a membership of Good Sam ERS could be worthwhile insurance!

John
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Old 06-06-2017, 11:44 PM   #6
Mini-Skoolie
 
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Join Date: Apr 2017
Location: San Francisco
Posts: 52
Year: 1974
Coachwork: Crown
Chassis: Supercoach - Single Axle
Engine: Cummins NH-250, Fuller T-905M
Great. Thanks for the tips.
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Old 06-06-2017, 11:48 PM   #7
Mini-Skoolie
 
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Join Date: Apr 2017
Location: San Francisco
Posts: 52
Year: 1974
Coachwork: Crown
Chassis: Supercoach - Single Axle
Engine: Cummins NH-250, Fuller T-905M
Well how about that! What an awesome machine.

But of course would be great to share notes on fixing it up. Only place I went after that trip was back down to the city - much easier the second time when it wasn't rush hour traffic. Then took it out to Livermore, where I rented an RV spot to keep it for the short term.

What condition is yours in?
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Old 06-06-2017, 11:55 PM   #8
Mini-Skoolie
 
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Join Date: Apr 2017
Location: San Francisco
Posts: 52
Year: 1974
Coachwork: Crown
Chassis: Supercoach - Single Axle
Engine: Cummins NH-250, Fuller T-905M
Appreciate the tips.

I read somewhere that there's someone who can tell you details of a crown based on serial number. Happen to know where that is?

[IMG][/IMG]
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Old 06-07-2017, 12:01 AM   #9
Mini-Skoolie
 
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Join Date: Apr 2017
Location: San Francisco
Posts: 52
Year: 1974
Coachwork: Crown
Chassis: Supercoach - Single Axle
Engine: Cummins NH-250, Fuller T-905M
Thanks for the tips.

I read somewhere that there's someone who can find detailed information on a Crown build from the build plate information. Happen to know who that is?



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Old 06-07-2017, 02:27 AM   #10
Mini-Skoolie
 
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Join Date: Apr 2017
Location: San Francisco
Posts: 52
Year: 1974
Coachwork: Crown
Chassis: Supercoach - Single Axle
Engine: Cummins NH-250, Fuller T-905M
Cummins Quick Serve - Skoolie Quicker Serve

Turns out Cummins Quick Serve:

https://quickserve.cummins.com/info/index.html

Had the following on my motor:



And even better, skoolie.net member hanaipa e-mailed me the .pdf service manual. Skoolie.net delivers.
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