Gearbox problems?

bugbum Commited Dubber

56 posts · joined Jun 2003 · 25 Feb 2007, 9:08 am

#575304

Hi

Just recently my bug has start to pop out of 4th gear when I accelerate. It doesn't happen in any other gears, just 4th.

I put a quick shift kit on it a while back, but it worked fine for months before this happened so I'm not sure if this would cause it.

Anyone had this problem ? What should I do?

Thanks

Bizarre Moderator The artist formerly known as blue74l

12,787 posts · joined Aug 2002 · 25 Feb 2007, 10:15 am

#575313

read here

http://www.vw-resource.com/transmission_troubleshooting.html

main points of this are
* defective (worn out) sync teeth on the gear that's popping out (especially 4th) and defective teeth on the mating operating sleeve.

*the hockey stick (gear selector) inside the nose cone of the transmission is cracked or broken, or else the gearbox is just very worn (for example - worn bearings allowing the shafts to move off line a little.)

"Could" be rear coupler, shift bushing and adjustment but if it was working for "months" then i doubt it.
If you have not changed these things then start here, but i would start looking for a good 2nd hand box - or a trip to Supa Cheap and get a good Occy strap

Futue te ipsum!!!

68AutoBug Beetle Restorer - Experience over 138\% - YIKES --

11,654 posts · joined Aug 2002 · 25 Feb 2007, 10:50 am

#575315

Take the quick shifter off the gearlever and see if it still does it...

You may have the shifter plate incorrectly placed...
[fingers crossed]

Problem is, gearboxes are getting so many miles up now,
parts will be worn...

with next gearbox, use an additive like Molybond etc..
to stop any further wear...
and maybe use a synthetic oil in the gearbox...

cheers best of luck

Lee

- Helping keep Air Cooled VWs on the road - location: SCONE in the Upper Hunter Valley - Northern NSW 320 kms NNW of SYDNEY---

vw54 Administrator Always Waiting 4 Friday

16,723 posts · joined Aug 2002 · 25 Feb 2007, 4:24 pm

#575375

Did you fit the plate under the gear stick the correct way around

I read it on FACEBOOK so it must be true

http://forums.aussieveedubbers.com/viewtopic.php?tid=91278&page=1#pid848630

http://forums.aussieveedubbers.com/viewtopic.php?tid=63561&page=1#pid624099

http://forums.aussieveedubbers.com/viewtopic.php?tid=4832&page=1#pid452603

http://forums.aussieveedubbers.com/viewtopic.php?tid=60650&page=1#pid574409

Kombi_Rescue Wolfsburg Wizard

440 posts · joined Feb 2005 · 25 Feb 2007, 7:36 pm

#575417

FYI a quick shift does exactly that.....so if you use one its a much faster change into the gears ,thats what a gearbox feels any way.....so some of the possible causes for jumpimg top and the most common is a worn slider and hub and selector fork in the tranny..resting a hand on the gear lever whilst in 4th is the quickest way to wear out this part ,split screen kombis are reknown for top gear jumping, another cause is due to pinion bearing and mainshaft bearing wear..this allows a lot of slop in the gear train which affects the critical tolerences between selector fork and hub..eg not going far enough in....any way not to put a downer on your problem my op is its more internal.....loosen the gearshift plate and select hard into 2nd or 4th and tighten..this may be of some assistence here's hoping cheers steve