Tremec gearbox cannot be switched

[User1]

View attachment 7837525
OK, it’s not very complicated to remove the shifter. You’ll need to pull the shaft and the spring out, compress them, put the pin back in and then reinstall the shifter. If it happens again, I might have to add a little bit of glue, but overall very easy fix

Can you describe how to remove the shifter?

 

[Hannes01]

If anyone finds the pin:
Please measure it and share the dimensions here.
The pin is not available separately - in Germany - the whole gearshift has to be replaced!

 

[Tinerfeño]

I did ask for pin dimensions 12 Nov, no reply yet.
It has to be some standard item.

 

[User1]

I will measure it tomorrow

I did ask for pin dimensions 12 Nov, no reply yet.
It has to be some standard item.

 

[Hannes01]

+ picture please

 

[DaBull]

+ picture please

Measurement with a micrometer please for diameter and length + photos.

 

[User1]

24x3mm

 

[DaBull]

24x3mmView attachment 7838129View attachment 7838130View attachment 7838128

Hi User1, Thanks for the measurements and photos. Is that a gouge, recess or keyway in the pin in photo 3?

 

[Tinerfeño]

That's a traditional way to make a small bulge to pin so that it jams into the hole. There should be 3 of those pressings.

 

[DaBull]

That's a traditional way to make a small bulge to pin so that it jams into the hole. There should be 3 of those pressings.

Seems to me if should have been a split pin that would have been a press in fit or perhaps some type of keeper to prevent it from falling out. Instead of a zip tie, would a small section of a tight rubber sleeve hold the pin in or would that interrupt with pulling up on the collar? DaBull

 

[RobS]

View attachment 7837525
OK, it’s not very complicated to remove the shifter. You’ll need to pull the shaft and the spring out, compress them, put the pin back in and then reinstall the shifter. If it happens again, I might have to add a little bit of glue, but overall very easy fix

My pin fell out today. How did you pull the lever and knob out?

 

[RobS]

My pin fell out today. How did you pull the lever and knob out?

Never mind. I figured it out.

 

[Diego]

I am trying to receive some knowledge from you.

My Grenadier has 33,000 kms (approx 20,000 miles). I bought It in June 23. Transfer changed under warranty in July 23.( There was a calle in)

In the last months I can only shift to low gear when the engine is warm. When the engine is cold, there is no way to engage low gears.

Locking center diff is no issue.

With the engine warm I can easily engage low and high gears.

Car is in dealer since yesterday and I am sure they will find the problem, but I want to know your comments.

Thank you

 

[angstorms]

The pin was discussed a while ago, here is replacement https://www.mcmaster.com/91610A411/. Note they even have Solidwork cad file for the pin.

Shaft Type	Slotted
Material	18-8 Stainless Steel
Diameter	3 mm
Length	24 mm
For Hole Diameter	3 mm to 3.1 mm
Wall Thickness	0.6 mm
Double Shear Breaking Strength	Not Rated
Minimum Hardness	Not Rated
Specifications Met	DIN 1481, ISO 8752
End Shape	Chamfer
End Type	Plain
Fastener Head Type	Plain
Passivation	Passivated
Performance	Corrosion Resistant
Pin Type	Spring
System of Measurement	Metric
Country of Origin	China
DFARS Compliance	Not Specialty Metals Compliant
Export Control Classification Number (ECCN)	EAR99
REACH Compliance	REACH (EC 1907/2006) (06/27/2024, 241 SVHC) Compliant
RoHS Compliance	RoHS 3 (2015/863/EU) Compliant
Schedule B Number	731829.0000
USMCA Qualifying	No

 

[Diego]

I do not think the issue stay with the pon, as It works very well when engine is warm.

What do you think?

 

[Tom D]

I have noticed that occasionally mine wont go in. It’s a gear meshing issue. Sometimes just rolling back or forward isn’t enough, you need some steering input too.
I dont think that this is related to temperature. Try doing it on a slope so that the car can roll. Slowly allow it to roll forward or back whilst putting some pressure on the shifter and giving some steering input. I think it will work.