Topic: G58 input shaft slop

[eurasiaoverland]

Hi All

I have a Europe-spec Toyota Hilux LN105 with a G58 transmission. I have owned the truck for years and it has taken me more than 200,000 kilometres around various parts of Eurasia. A few years ago I completed a full nut-and-bolt rebuild. One of the very few jobs I outsourced was a transmission tear-down and rebuild to a specialist near me. Annoyingly, when driving the truck in 2014 and 2015, I had some transmission issues.

I think I had put about 20-30,000 kms on when I started to hear a light meshing sound, particularly in over-run. By about 40,000 kms it had become pretty loud. I was in Russia at this point and had the truck put up on ramps and the transmission pulled. I was sure it was going to be a worn clutch release bearing, but what we found was that the splined clutch hub was loose in the clutch friction disc, and that the noise was chattering clutch springs.

The mechanic reckoned that the root cause was excessive slop in the input shaft, and it was clear that the input shaft bearing moved freely (rotated) in the transmission housing, even when held by the large spring clip. This I guess translates into excessive lateral play in the shaft (axial play is fine). He put in a new clutch disc, but warned me that the problem would recur, which it has.

The truck has been in storage for a few years (due to working abroad), but I want to get it back on the road, and get this job fixed.

Has anyone had similar issues with a manual transmission? Is it likely to just need the transmission case sleeving or replacing? Or are there likely to be other issues at play, perhaps that the transmission shop bent a shaft?

I got a very cheap NOS OEM input shaft which I am happy to put in, I'm afraid that the spigot of the old input shaft will have been worn down. I also have new clutch components (friction disc, release and spigot bearings).

I would be very glad of any help or advice from anyone who has encountered similar issues.

Thanks!

EO

P.S. as a member intro, there is a bit of a story on my two Toyotas on my website: https://eurasiaoverland.com/vehicles/

[T-Revv]

Typically that type of moment occurs when the snap ring is missing from the bearing.  However I believe you said that was there, so either your nose cone is completely worn out, or the front housing is worn out ( in and out play).