again with the throwout bearing?!

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chachi
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again with the throwout bearing?!

Post by chachi » Tue Jan 22, 2013 5:28 pm

...
1974 transporter panel, 2.0 dual solex
1991 vanagon NAHT, RJE 2.3

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hambone
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Re: again with the throwout bearing?!

Post by hambone » Tue Jan 22, 2013 9:07 pm

Could be the cable. Check for tension at the trans.
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Amskeptic
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Re: again with the throwout bearing?!

Post by Amskeptic » Tue Jan 22, 2013 10:06 pm

chachi wrote:just replaced the throwout bearing on the six rib i'm currently running, have had it going for maybe two weeks. driving today, damn pedal drops to the floor. haven't pulled the transmission (AGAIN ARGHHH) but what the hell could i have done wrong? everything i've read says not to grease it, so i didn't. could i have had the clutch adjustment to far in? it was pretty damn far in.
Need more information. Check with an assistant, to see if the clutch arm is moving with the pedal. Snapped cable strands can let the pedal drop alarmingly yet still be hooked up with the clutch arm. If the arm is moving right away with the pedal, the problem is internal.
Colin
(lubrication between the TO bearing and the sleeve or the clutch fingers is not germaine to this issue)
BobD - 1978 Bus . . . . . . . . . . .111,155 miles
Chloe - 1970 bus . . . . . . . . . . . 206,820 miles
Naranja - 1977 Westfalia . . . . . 98,380 miles
Pluck - 1973 Squareback . . . . . 55,510 miles
Alexus - 1991 Lexus LS400 . . . 78,885 miles

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chachi
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Re: again with the throwout bearing?!

Post by chachi » Thu Jan 24, 2013 10:36 am

...
1974 transporter panel, 2.0 dual solex
1991 vanagon NAHT, RJE 2.3

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Amskeptic
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Re: again with the throwout bearing?!

Post by Amskeptic » Thu Jan 24, 2013 8:09 pm

chachi wrote:yea, the cable is good, the arm actuates. it feels just like the last time the spring broke on the TOB, like one side is still attached but one clip snapped.
The arm actuates right away? Like immediately? Any delay and clutch will not release by the bottom of the pedal travel. Any delay is usually a broken cable strand or six.
Can you restore clutch action by taking up the wingnut? Cable strand check.
Is there vibration in the pedal? Disassemble.

Those stupid retainer springs . . . I do not use screwdrivers to pry them on. The merest nick weakens them. Is it a Sachs release bearing that you last installed?
Colin
BobD - 1978 Bus . . . . . . . . . . .111,155 miles
Chloe - 1970 bus . . . . . . . . . . . 206,820 miles
Naranja - 1977 Westfalia . . . . . 98,380 miles
Pluck - 1973 Squareback . . . . . 55,510 miles
Alexus - 1991 Lexus LS400 . . . 78,885 miles

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hambone
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Re: again with the throwout bearing?!

Post by hambone » Thu Jan 24, 2013 10:57 pm

How the hell do you get those springs on without tremendous irritation? It seems like you really have to pry to get them seated.
http://greencascadia.blogspot.com
http://pdxvolksfolks.blogspot.com
it balances on your head just like a mattress balances on a bottle of wine
your brand new leopard skin pillbox hat

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Amskeptic
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Re: again with the throwout bearing?!

Post by Amskeptic » Fri Jan 25, 2013 10:22 am

hambone wrote:How the hell do you get those springs on without tremendous irritation? It seems like you really have to pry to get them seated.
Late model buses (collar-guided bearings) have a more flexible retainer spring. The early ones have to seriously hold the bearing in space as they dangle. Look for the longer end, it will be the more flexible one to gently-yet-firmly pry and seat.
Colin
BobD - 1978 Bus . . . . . . . . . . .111,155 miles
Chloe - 1970 bus . . . . . . . . . . . 206,820 miles
Naranja - 1977 Westfalia . . . . . 98,380 miles
Pluck - 1973 Squareback . . . . . 55,510 miles
Alexus - 1991 Lexus LS400 . . . 78,885 miles

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hambone
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Re: again with the throwout bearing?!

Post by hambone » Fri Jan 25, 2013 11:20 am

Gotcha, thanks.
http://greencascadia.blogspot.com
http://pdxvolksfolks.blogspot.com
it balances on your head just like a mattress balances on a bottle of wine
your brand new leopard skin pillbox hat

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chachi
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Re: again with the throwout bearing?!

Post by chachi » Tue Jan 29, 2013 7:27 pm

...
1974 transporter panel, 2.0 dual solex
1991 vanagon NAHT, RJE 2.3

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Amskeptic
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Re: again with the throwout bearing?!

Post by Amskeptic » Tue Jan 29, 2013 10:13 pm

chachi wrote:finally got her towed home tonight; the tow truck driver was super nice and loves buses. his 13 year old son is way into them so he bought one that he is restoring for the kid offsite so that when he turns 16 he's gifted this restored bus as a first car. wicked.

anyway, the investigation continues as soon as it stops pouring rain. ah, pulling engines in the street, i'm getting good at it now...

... oh, and yes, it was a sachs bearing. i'm fairly sure a screwdriver was involved.
We'll be watching for updates right here on the chachi channel . . . :happy1:
BobD - 1978 Bus . . . . . . . . . . .111,155 miles
Chloe - 1970 bus . . . . . . . . . . . 206,820 miles
Naranja - 1977 Westfalia . . . . . 98,380 miles
Pluck - 1973 Squareback . . . . . 55,510 miles
Alexus - 1991 Lexus LS400 . . . 78,885 miles

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chachi
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Location: ne pdx, or.
Contact:
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Re: again with the throwout bearing?!

Post by chachi » Wed Jan 30, 2013 9:46 am

...
1974 transporter panel, 2.0 dual solex
1991 vanagon NAHT, RJE 2.3

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chachi
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Contact:
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Re: again with the throwout bearing?!

Post by chachi » Sun Apr 14, 2013 5:51 pm

...
1974 transporter panel, 2.0 dual solex
1991 vanagon NAHT, RJE 2.3

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Amskeptic
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Re: again with the throwout bearing?!

Post by Amskeptic » Mon Apr 15, 2013 7:22 am

chachi wrote: I expect better things.
So do I. That popcorn is sooooooooooooooo stale.

I do not pay close attention to the 3/4" pedal freeplay of the earlier buses vs the 7/8" pedal freeplay of the later ones. I give them all a good inch to an inch and a half.

The adjustment is not open to manipulation to cover up symptoms. Some people have a sticking clutch that makes it hard to go into gear. They hope that tightening the cable will "fix" it. No it won't. It will hyper-extend the pressure plate fingers and even cause contact between the operating arm and the pressure plate cover.
Colin
BobD - 1978 Bus . . . . . . . . . . .111,155 miles
Chloe - 1970 bus . . . . . . . . . . . 206,820 miles
Naranja - 1977 Westfalia . . . . . 98,380 miles
Pluck - 1973 Squareback . . . . . 55,510 miles
Alexus - 1991 Lexus LS400 . . . 78,885 miles

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chachi
Old School!
Location: ne pdx, or.
Contact:
Status: Offline

Re: again with the throwout bearing?!

Post by chachi » Wed Apr 17, 2013 11:55 am

...
1974 transporter panel, 2.0 dual solex
1991 vanagon NAHT, RJE 2.3

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hambone
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Location: Portland, Ore.
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Re: again with the throwout bearing?!

Post by hambone » Wed Apr 17, 2013 12:28 pm

That spring is pretty durable, I'd be surprised if that was the trouble.
Assuming you have the correct clutch cable, it does seem like the pressure plate isn't doing it's business. I had a couple fingers fail on my Sachs PP, causing similar symptoms to yours. If you looked at at from above, you could see a misalignment at the throwout bearing ring.
Could some funny business be occurring at the nose cone? I've never been that far into a trans. That, or something internal like shifter fork.
http://greencascadia.blogspot.com
http://pdxvolksfolks.blogspot.com
it balances on your head just like a mattress balances on a bottle of wine
your brand new leopard skin pillbox hat

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