VCCA Home Forums TECHNICAL - 1945 AND EARLIER 1912-1928 1918 crown wheel and pinion 490

broken pinion and bearing behind it. This model not shown in handbook. Need crown wheel and pinion and thrust bearing. Can you help. No spares in Ireland!! Elisa36

I have been told that the ring (crown) and pinion gears in the Chevy 490 are the same as the Model T. If that is the case then finding replacements should be much easier. Maybe there are some Model T parts in Ireland.

You can use the T-F''D's just the same, both in normal and high speed ratio.

Go to this page and you will get both pinion and crown wheel:
USA: http://www.snydersantiqueauto.com/ring-gear-and-pinion
https://www.modeltford.com/item/2518-3-1.aspx
http://www.macsautoparts.com/ford_m...ooth-ring-gear-13-tooth-pinion-gear.html

GB: http://quaife.co.uk/quaife-products/crown-wheel-and-pinions/

Check them out about prices/terms.

I have not found more than one cutting and think they have left the newer oblique cut ring gear.

When do you need them? I have a new spare set if needed quick.

I have heard the same about using the Model T crown and pinion.
This was posted here some time back;
https://vccachat.org/ubbthreads.php/topics/260745/1/Drive_shaft_ring_and_pinion_ge

The one thing to remember as stated in above, T gears are straight cut.

Are the 490 ring and pinion gears and the thrust bearing the same as in the 1923-1924 Superior Touring cars?

Mike

Mike,
R&P gears on 1922 490 and 1923-24 Superior models are same, 1922 was the first model with spiral cut teeth. On earlier models of 490 R&P gears has straight cut gears. Also propeller shaft, pinion bearing and other parts on 1922-1924 models differ from earlier models of 490.

As to the thrust bearing they are same all years, but on 1922-1924 only on the right side of the differential, because on the left side is a ball thrust bearing, not the lousy pot metal bearing between two steel washers. Therefore there are no pins on the left side of the differential house or on the left rear axle shaft.

About the old pot metal thrust bearing: If there is something still left of it, replace it with a new production bronze bearing, same as is selling for Ford Model T.

Really helpful..Thanks...I see straight cut nodel T 40 to 10 and also 39 to 11. Crown wheel to pinion. Any comments! Mine broken in 490 is 40 to 10. Pics look identical 490 to Model T. Feeling better already Cheers Elisa 36

Very helpful thank you. I wonder does the new T combined roller and thrust bearing fit 490? My problem started with the old roller bearing braking up.

Ask John at Fun Projects
http://www.funprojects.com/
He might just have some information for you and who knows you may not have been the first to ask.
Fun Projects makes the replacement roller bearing kits.