throw out arm return spring

[johnesc]

where to find a throw out arm return spring? do you have to remove the lever to install the spring?

[david58]

http://www.shoptalkforums.com/viewtopic ... &highlight
http://www.shoptalkforums.com/viewtopic.php?t=117066
These to threads go into details and the second one has pics.

[Marc]

You don't have to remove the lever to spiral a new spring into position, but there's limited room to work with the trans in place so it's a little tricky.
If you remove the lever (sometimes much harder than it sounds, they can get seriously frozen in place) you may find that you can't get the retaining clip back on without pulling the engine to push the cross-shaft over. Keep that thought in mind and it'll make the challenge of replacing the spring without taking off the lever worthwhile...
Be aware that there are two sizes of spring, the mid`72-up ones are bigger (if you somehow succeeded in getting an early spring onto a late trans it would bind in action).

What year is your trans?

[sagaboy]

Is it necessary to lub the spring once in a while--sort of a form of maintanence.

[johnesc]

my chassis is a 1969, the throw out bearing has the pilot, since i gave you the information about the throwout bearing you can safely assume the engine is on my work bench and not in the car. The arm is severely harmenically sealed to the shaft. Any idea what spring i need and where to get one?

[Marc]

...since i gave you the information about the throwout bearing you can safely assume the engine is on my work bench and not in the car....

You did? Where? And how would one know that you had the engine out at the moment just because you know what TOB your trans takes?
If it's a `71 or early `72 trans you need the `61-early`72 spring, 113 141 723 (NO letter at the end). Any self-respecting VW parts house should carry them.
http://www.jbugs.com/store/merchant.mvc ... y_Code=100

But later transmissions also have the TOB guide sleeve, and their cross-shafts & levers are larger.
Late`72-`74 uses 113 141 723C.
`75-`79 uses 113 141 723D.

[johnesc]

Thanks for the information Marc, i wrote that msg as i was looking at the TOB, i will be more specific in the future about the whereabouts of my components

[Marc]

If your cross-shaft diameter is 16mm (~5/8") you need the 723 (plain) spring.
If it's 20mm (>3/4") the 723C should work for you.

[johnesc]

i went to the Carquest store to get the alternator i ordered and they were able to order the return spring, could not get the plain only the C

[Bruce2]

Late`72-`74 uses 113 141 723C.
`75-`79 uses 113 141 723D.

Marc, I have seen those two springs in catalogs before. What is the difference, and why did they need to change the spring?

[Marc]

I think the end that hooks onto the lever is slightly longer on the "D". I can't recall ever using anything but the plain and the "C", though. I quit working on VWs professionally many years ago so it's possible that I never encountered a "D" that needed replacing, but odds are that I did and unknowingly used a "C" and it worked fine.
I've got a few late cores out back including a `77, if I remember in the morning I'll take a look and see if there's any discernible difference between the spring on it and those on some late`72-`74 boxes. Of course if it looks identical that could just mean someone's replaced it

[Bruce2]

I'll do the same with the cores I have.
I do know that the clutch arm changed from the 90mm arm to the 100mm arm sometime midway through the 75 model year. I don't know if this change coincided with the spring change.

[Marc]

My `77 core has had the spring raided and I can't make out any wear mark on the lever where it was riding, so I've got nothing to contribute

[Bruce2]

I think the end that hooks onto the lever is slightly longer on the "D". I can't recall ever using anything but the plain and the "C", though. ....it's possible that I never encountered a "D" that needed replacing, but odds are that I did and unknowingly used a "C" and it worked fine.

Here's a pic of the 2 springs:



On the left is the "D", the "C" on the right.

I'm sure I've mixed them up too.

[johnesc]

Back to the return spring again because my AH tansaxle broke. I now have an AT 17 07 3, with a 20mm cross shaft. Ordered a 113 141 723C and it is the same as the AH spring which has a 16mm cross shaft. Luckily the broken spring was on the shaft of the AT, the ID of the broken spring is larger.The AH spring is approx. 36mm ID (note: two windings with different dimensions), the AT spring is approx. 40mm ID (note: two windings same ID).
Assuming the correct spring is in the correct bag the 723C is to small ID.
Does any one know which spring has an ID of 40mm?
Down to two choices 723 or 723D