Governor Bearing Replacement

shawmic · Aug 25, 2014

On my 1947 "A" John Deere we recently replaced the bearings on the end of govenor. The distributor was removed but not the shaft. After complete assembly the tractor does not start? We have spark but no compression? Prior to the bearing assembly the tractor started quickly. Possible problems or things to check.

Mike N Mo · Aug 25, 2014

No compression at all, or no compression at the time of spark? If the 2nd senario you probably installed the distributer 180* out of time. Try swapping the spark plug wires and try it. If it now runs you can leave it as is, or correct the distributer timing (and obviously swap back the wires to orig location)

shawmic · Aug 26, 2014

I switched the wires and wasn't that lucky to get it started. When we installed the new bearings we did not have to pull the shaft so I don't believe anything changed on the bearing end but not sure on the distributor end. Appears to be out of time badly? When we pull the tractor we get a big pop almost blowing the rain cap off the muffler but no start. Other suggestions appreciated!

a49deere · Aug 26, 2014

pull left side bearing cover off governor and verify that mark on cam gear and governor gear still line up

Lee B · Aug 27, 2014

Open the left #1 petcock, roll it around until you are on the compression stroke there. Then line up the word IMPULSE on the flywheel with the matching mark on the transmission side cover at 3 o'clock. Remove distributor and verify that the driving slot for it is horizontal. If it isn't then this is your problem, remove left side governor bearing cover and re-tooth until the slot is horizontal. Reinstall the distributor with the rotor under the terminal you want to use for #1, should fire right up just like she used to.

shawmic · Aug 28, 2014

Because the bearings fell out when I pulled the plate to replace-- their is a good chance it jumped a tooth or two. What is the secret to matching the teeth in the correct slot? or to know what is the correct position?

a49deere · Aug 28, 2014

If you pull bearing cover off look closely at cam gear and governor gear. There should be a mark, punch mark(dot) in each gear. One in the tooth of one gear and one in between teeth of the other.

shawmic · Aug 31, 2014

I checked and it had jumped 1 tooth. After new points further checking -- no compression on the left side.....adjusted the valves and it started up and sounded good. thanks for all the suggestions.

Governor Bearing Replacement

shawmic

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Lee B

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