Sleeve Gear Bearing Failure

HRD · Jul 23, 2019

Niagara850 said:
Thx I plan to fuss/adjust the outer cover hair spring/pawl mechanism more.

Hi did you undo or loosen the two bolts in the outer gearbox cover,the ones that hold the gear change stop plate ? If so perhaps the stop plate has now moved ,this plate also effects the ability to change through the gears both from first to fourth and back fourth to first gear.
If the fault is in changing down move the plate upwards,if the fault is when changing up move the plate DOWN .Before doing this mark the existing position on the two cast lugs that are used to mount the stop plate with a scribe line on each mounting lug. I have had to elongate the holes on the stop plate by 1/32 inch with a rat-tail file to achieve adjustment on a gbox built from parts of several used gearboxes.
Paul

Niagara850 · Jul 24, 2019

HRD said:
Hi did you undo or loosen the two bolts in the outer gearbox cover,the ones that hold the gear change stop plate ? If so perhaps the stop plate has now moved ,this plate also effects the ability to change through the gears both from first to fourth and back fourth to first gear.
If the fault is in changing down move the plate upwards,if the fault is when changing up move the plate DOWN .Before doing this mark the existing position on the two cast lugs that are used to mount the stop plate with a scribe line on each mounting lug. I have had to elongate the holes on the stop plate by 1/32 inch with a rat-tail file to achieve adjustment on a gbox built from parts of several used gearboxes.
Paul

I had it all apart. The fault is changing up. I'll try this. Thx.

Hortons Norton · Jul 24, 2019

The picture shows the position in forth gear looks good, if the hairpin spring is touching the pawl and keeping it form rotating at first movement you are going to have problems.

Niagara850 · Jul 26, 2019

No luck with the outer cover / hair spring /carrier assembly. Looks like the Quadrant jumped a tooth or two. Measured the distance from the middle of the racket plate pin to the edge of the cover fully up on the pawl and compared to the centre of the knuckle pin roller in 4th to the edge of the cover and there is 0.5 cm difference. The Quadrant is too high. Back in it is.

Hortons Norton · Jul 26, 2019

Sorry to hear.

Niagara850 · Aug 10, 2019

Epilogue: Back on the road. Summer is short in this part of the world. Yup... Quadrant was out a tooth. Easy fix though, pushed it down till it disengaged then fettled the cam wheel toward neutral to get the proper engagement. Tested the shifting inner and outer and buttoned everything up. Cleaned up some stuff in the Primary. Stator wiring and clutch snap ring ( what a piece of mechanical design...) Put 60 miles on and it shifts more positively than before. Thanks to the local's ; Alan McKay, Bob McDonald and some sage advice from Rick Harrett not with standing the forum.

Hortons Norton · Aug 10, 2019

Good to hear.

HRD · Aug 10, 2019

Niagara850 said:
Epilogue: Back on the road. Summer is short in this part of the world. Yup... Quadrant was out a tooth. Easy fix though, pushed it down till it disengaged then fettled the cam wheel toward neutral to get the proper engagement. Tested the shifting inner and outer and buttoned everything up. Cleaned up some stuff in the Primary. Stator wiring and clutch snap ring ( what a piece of mechanical design...) Put 60 miles on and it shifts more positively than before. Thanks to the local's ; Alan McKay, Bob McDonald and some sage advice from Rick Harrett not with standing the forum.

Hope you enjoy many more rides on your Norton.
Paul

Sleeve Gear Bearing Failure

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