Question for the transmission guys that roam the forum.
I have an O1E in my 40.
Today I gave it a squirt in 2nd then had trouble getting out of gear.
After a few tugs it released but would not go into 2nd or 1st so I drove back to the shop in 3rd and 4th.
Checked it out and pulled the box, stripped it down and found 2nd gear syncro has got hot and had welded itself to its mating part which is 1st-2nd and reverse selector hub sleeve.
Reverse is a gear around the sleeve.
The sleeve looks good ,minor marks that will clean off, the syncro has no grooves on the friction surface, has been hot, the back side is not discolored, detent spring is good.
Syncro fork is excellent no wear on either side, I will check end float on assembly but had done that when I put the diff in and it was good then 6000km ago.
I have done track work the box will run at around 90-100 deg C, it has seen 130 on one occasion.
I am thinking maybe its getting to hot with the track work it ran for 6hrs flat out ,I have done about 300km since on the road.
My wife has a habit of coming back to 2nd a bit early at the track so I am wondering if its making it overheat the ring and has taken till know to become a problem.
Or is there an inherent issue with oil supply.
Or have you seen this before.
Jim
I have an O1E in my 40.
Today I gave it a squirt in 2nd then had trouble getting out of gear.
After a few tugs it released but would not go into 2nd or 1st so I drove back to the shop in 3rd and 4th.
Checked it out and pulled the box, stripped it down and found 2nd gear syncro has got hot and had welded itself to its mating part which is 1st-2nd and reverse selector hub sleeve.
Reverse is a gear around the sleeve.
The sleeve looks good ,minor marks that will clean off, the syncro has no grooves on the friction surface, has been hot, the back side is not discolored, detent spring is good.
Syncro fork is excellent no wear on either side, I will check end float on assembly but had done that when I put the diff in and it was good then 6000km ago.
I have done track work the box will run at around 90-100 deg C, it has seen 130 on one occasion.
I am thinking maybe its getting to hot with the track work it ran for 6hrs flat out ,I have done about 300km since on the road.
My wife has a habit of coming back to 2nd a bit early at the track so I am wondering if its making it overheat the ring and has taken till know to become a problem.
Or is there an inherent issue with oil supply.
Or have you seen this before.
Jim
