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Old 08-18-2020, 09:40 PM   #2
Dieselwrencher
6>8 Plugless........
 
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Join Date: Sep 2007
Location: Prairie City, Ia
Posts: 17,141
Re: 12v cummins into 62 c30

Awesome score you have there! Yes, you can start that on the floor very easily. I'd put a 6x6 or similar under the oil pan to help keep it stable. Keep the engine hoist chain taunt as well. Check the oil and make sure it looks decent and full. Typically those engines had an oil pressure switch on the LH side behind the power steering pump below the throttle bracket. Unscrew it and put a mechanical oil pressure gauge there. This should be a 1/8" pipe fitting. Next thing, there is a lift pump on the LH side of the engine. It looks similar to what a SBC has just upside down and there is a lever on it. Put a piece of diesel rated hose in a fuel can to the inlet of the lift pump. There is also a return hose that is probably cut around the lift pump area. Put a piece of hose on it and put it in the fuel jug. Make sure to put a clamp on the hoses on the lift pump.

Now you need a really good group 31 battery or group 65 battery. Put a ground on the engine block. These bolt holes are usually 12mm and found under the front gear housing in front. Or on the side of the block by the motor mount holes. Put a battery cable on the starter to the battery. I usually use a starter bump switch to run the starter. You will need a wire with an alligator clip, or take the nut off the fuel shut off solenoid and put a ring terminal on it. The fuel shut off solenoid needs 12v to pull the plunger in the injection pump. The fuel shut off solenoid is on the top rear of the injection pump and is roughly 15/16 sized wrench big. (It's actually metric but this wil give you an idea what you're looking for) It only has one stud coming off it. Don't bolt the other end to the battery or put a toggle switch in between the battery and FSS so you can shut the engine off.

Now, take the lift pump lever and push it up and down 10 or so times until you hear or feel a difference. Apply power to the FSS and push pull the lever 10 more times. Make sure there is nothing blocking the turbo out let, inlet, and engine intake. Put 12v to the s terminal of the starter and crank it. If it has been setting for a while or someone has taken the fuel lines off you may need to loosen the line nuts at the injectors and bleed the air out. Just crack the nuts loose and when fuel begins to spray out tighten them. Once you do this it should fire up. If not, you may have to put power to the grid heater for 10 seconds or so to get it to go.

Also make sure the trans has fluid in it before attempting to fire the engine up.

C30 springs will hold it just fine too. Those are really good engines. Those transmissions are alright but make sure you fill it 1 qt over the stock fill line to make sure it lives a long life.
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Ryan
1972 Chevy Longhorn K30 Cheyenne Super, 359 Inline 6 cylinder, Auto Trans, Tilt, Diesel Tach/Vach, Buckets, Rare Rear 4-link and air ride option Build Thread
1972 GMC Sierra Grande Longhorn 4x4
1972 Chevy Cheyenne Super K20 Long Step side tilt, tach, tow hooks, AC, 350 4 speed
1972 C10 Suburban Custom Deluxe
1969 Chevy milk truck
1971 Camaro RS 5.3 BTR STG3 Cam Super T10
1940 Ford 354 Hemi 46RH Ford 9" on air ride huge project


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