Pathfinder Manual Transmission Rebuild Part 6
Transmission Gear Re Freakin Grinding in my 1994 Nissan Pathfinder.
Reverse main gear dog teeth were ground up. So ground up that I often had trouble getting into reverse. The teeth are supposed to fit together like this:
V V V
A A A A
But mine were ground down to look like this:
W W W
M M M M
So they would lock together and not engage half the time.
This is not in the manual.
In fact, the only reference to grinding these dog teeth that I could find explicitly stated: Don't do it. It is far too precise an operation for the home mechanic. Special precision tools are necessary.
So anyway, here is how I did it.
But first, lets pay some bills:
- Washed the gear and coupling sleeve.
Got some cheap diamond bits
- Thought to myself: Man, I rock.
First gear syncro measurement
Second gear syncro measurement
Third gear syncro measurement
Counter gear front bearing thrust washer tolerance.
I think this improvised method is fine.
- All well within factory spec. Now why the hell is third grinding so freakin bad?
Reassembled the "insert springs" on the OD and 3-4 syncro coupling sleeve.
Not well documented in the manual.
- Next I sold out to make 02¢
so I can fulfill my lifelong dream of owning a 1986 944 with blown head gaskets.
But no minivans!
- Then I finished my beer.
Donate to CharityIf this site has helped you, or even if it hasn't, please help care for abused and neglected children by making a donation to The Valley of the Moon Children's Home. That's right, abused and neglected children. Visit their website and try not to cry, you cold hearted bastard. Their site talks about how they achieved their goals and built a new home, but that was years ago. They still need cash to take care of all the kids there. Breaks my heart and pisses me off.
Think: Cars are expensive, powerful, and heavy. Before I start work, I face the possibility that I will destroy my vehicle, my own life, and innocent pedestrians' lives. If anyone messes with a 4000 lb machine capable of 100 mph, these are real possibilities. If I get in over my head, I call a professional mechanic. The information on this website is provided only for entertainment purposes, and it is not intended as advice on how to service a vehicle. For all you know I made this up. Don`t believe everything you read on the internet.
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Last modified: 11/22/2014