Gearbox M66 AWD (manual 6 speed) - Page 2

2hillsharry · Oct 1st, 2014, 12:27

welll, its funny how googling one day is so different the next!

today i looked up M66 Gearbox and got a useful diagram:

http://www.volvoclub.org.uk/tech/2004r/R5-M66.pdf

its Ducklakeviews contribution regarding detent pins, which draws me to the diagram on sheet 36 on attached link labelled 'part 2'

that is show on thae earlier link as the 'upper ballcatch' (was part 8636177) now part number 30751399, the manual advises as the detent pin for 6th gear.
heres that earlier diagram:

http://www.volvopartswebstore.com/sh...rimLevel=11126

So as they cost £7.20each, so i have ordered two & will report back in due course.

(by the way, i checked the gearshift linkage, it all seems ok)
regards
Kevin

2hillsharry · Oct 4th, 2014, 14:49

well i changed the ball catches (both) - took 10 minutes. (Old ones seemed in pretty good condition).

It has not however cured the 'jumping out of 6th gear' problem.

If anyone has any other ideas i'd be grateful

Regards

2hillsharry · Nov 30th, 2014, 21:09

Hi again folks, anyone any ideas on this problem for me?

still jumps out of 6th when transmission under load
(ie doesnt jump going downhill, does uphill / accelerating.

thanks

2hillsharry · Dec 11th, 2014, 15:35

Bump!

pulled the selector assembly out, no apparent wear, anyone identified any problems with the selector assemblies wearing out & what to look for?

(i see they are £115 to replacement part, so i am wondering if its worth a try)

yodacorp · Jul 29th, 2017, 16:10

Mine does the same under load. My kid managed to kick the stick out of 6th while I was towing the caravan...ouch!!!
After a quick research, managed to isolate the problem to a heavily worn synchronizer.
I was planning to pull out rhe selector assembly - does that come out easily?
I suspect there will be no damage to it but still...any info is much appreciated!

allmac · Jul 15th, 2020, 16:51

Hi all,
I know this is a very old thread, but did anybody resolve the problem
I have the same issue with my XC90 2004, will stay in gear only on overrun , or downhill, as soon as you put power on jumps out, and you can't even get it into 6th when under power.

Jul 15th, 2020, 16:51	#16
allmac New Member Last Online: Jul 30th, 2020 14:34 Join Date: Jun 2020 Location: newport	Jumping out of 6th gear Hi all, I know this is a very old thread, but did anybody resolve the problem I have the same issue with my XC90 2004, will stay in gear only on overrun , or downhill, as soon as you put power on jumps out, and you can't even get it into 6th when under power.

Oct 1st, 2014, 12:27	#11
2hillsharry New Member Last Online: Apr 1st, 2017 23:57 Join Date: Jun 2011 Location: Brighton	welll, its funny how googling one day is so different the next! today i looked up M66 Gearbox and got a useful diagram: http://www.volvoclub.org.uk/tech/2004r/R5-M66.pdf its Ducklakeviews contribution regarding detent pins, which draws me to the diagram on sheet 36 on attached link labelled 'part 2' that is show on thae earlier link as the 'upper ballcatch' (was part 8636177) now part number 30751399, the manual advises as the detent pin for 6th gear. heres that earlier diagram: http://www.volvopartswebstore.com/sh...rimLevel=11126 So as they cost £7.20each, so i have ordered two & will report back in due course. (by the way, i checked the gearshift linkage, it all seems ok) regards Kevin

Oct 4th, 2014, 14:49	#12
2hillsharry New Member Last Online: Apr 1st, 2017 23:57 Join Date: Jun 2011 Location: Brighton	well i changed the ball catches (both) - took 10 minutes. (Old ones seemed in pretty good condition). It has not however cured the 'jumping out of 6th gear' problem. If anyone has any other ideas i'd be grateful Regards

Nov 30th, 2014, 21:09	#13
2hillsharry New Member Last Online: Apr 1st, 2017 23:57 Join Date: Jun 2011 Location: Brighton	Hi again folks, anyone any ideas on this problem for me? still jumps out of 6th when transmission under load (ie doesnt jump going downhill, does uphill / accelerating. thanks

Dec 11th, 2014, 15:35	#14
2hillsharry New Member Last Online: Apr 1st, 2017 23:57 Join Date: Jun 2011 Location: Brighton	Bump! pulled the selector assembly out, no apparent wear, anyone identified any problems with the selector assemblies wearing out & what to look for? (i see they are £115 to replacement part, so i am wondering if its worth a try)

Jul 29th, 2017, 16:10	#15
yodacorp New Member Last Online: Aug 18th, 2017 19:34 Join Date: Dec 2016 Location: Sofia	Mine does the same under load. My kid managed to kick the stick out of 6th while I was towing the caravan...ouch!!! After a quick research, managed to isolate the problem to a heavily worn synchronizer. I was planning to pull out rhe selector assembly - does that come out easily? I suspect there will be no damage to it but still...any info is much appreciated!

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)