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Crawlers, Dozers, Loaders & Backhoes Discussion Forum

40's oliver track loader - an HG I think

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ollie

09-16-2004 14:35:59




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I am trying to help a friend get an old oliver loader running. It has a 4 cyl. Hercules engine in it. He just rebuilt the mag. we have fuel and spark. However we noticed that when #1 is at tdc, the tdc mark on the flywheel is not in the window on the bell housing. We have been assuming that cylinder #1 is the cylinder at the front of the loader, and not the rear. Is this correct? When we put the SPK mark in the center of the window on the bell housing, and set the magneto up correctly, the drive for the mag lines up ok. However we have tried to start it and it just puffs smoke or backfires. It seems to me that if the flywheel and mag are timed correctly, and the front cylinder is not at the top when the TDC mark is centered in the window on the bellhousing, that perhaps the rear most cylinder is actually #1. If any one can lend some assistance or offer a suggestion, it would be greatly appreciated Thanks, Bob

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Karen

09-18-2004 05:34:19




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 Re: 40's oliver track loader - an HG I think in reply to ollie, 09-16-2004 14:35:59  
Ollie, this is from the IX Hercules manual: "Now, rotate the magneto which is off of the engine until it is ready to fire on No. 1 cylinder. It is possible that the tangs on the coupling of the magneto will be out of position with reference to the slot in the governor gear. This is due to the dogs of the magneto impulse coupling locking the impulse so that it will trip when the magneto is turned. Here, either one of the two methods can be used for aligning the tangs with the groove and the gear. The first and easiest is to trip the impulse coupling by rotating the coupling. Then back it up to a point where the magneto will slip into place. This is the point where the tangs and the groove coincide. The other method is to rotate the engine counter-clockwise, which will move the slot in the gear back to the place where it will come in line with the tangs on the magneto when they are ready to take up the lag in the impulse coupling.
With the magneto in position, tighten the cap screws or stud nuts finger tight so that the magneto can be moved or rotated. Now, rotate the engine until the mark on the flywheel marked 'Spark' is in the middle of the timing hole in the bellhousing. Then, with the breaker cap off of the magneto, move the magneto until the breaker points just start to open."

We sell reprints of these Hercules manuals. If you have any questions, email me.

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RAB

09-16-2004 23:20:44




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 Re: 40's oliver track loader - an HG I think in reply to ollie, 09-16-2004 14:35:59  
To get it running.
You need the front piston at TDC on the compression stroke - when both valves are closed.
Turn the mag to advance it until the impulse trips. Tighten mag in this position (setting it just after TDC will prevent kickback. Put the approporiate plug leads in their correct locations and it should start, if not timed perfectly.
Regards, RAB



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