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Rear hatch lock
http://forums.tipec.net/viewtopic.php?f=25&t=22536
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Author:  Daddyscoob [ Thu May 11, 2017 8:14 pm ]
Post subject:  Re: Rear hatch lock

I have checked the motor and the arm which has the cable attached stops in different positions

Author:  flt505 [ Thu May 11, 2017 10:36 pm ]
Post subject:  Re: Rear hatch lock

I think possibly that your problem lies with the adjustment of the rod/cable. As your original post says correctly, that on opening via the either switch, the motor does one cycle ie opens the clams then closes the clams (one cycle). In between this cycle, the hatch should lift free partially, depending on the strength of the struts. If this initial cycle is not completed (or in your case, interrupted) and needs extra 'input' to get the clams closed, then the rods could be fouling around the locking pin assembly, or the cable is too tight (it must have a decent amount of 'play' on the joint on it's motor peg. Check both sides - both have to work in conjunction...

Just a possible suggestion...

Author:  Crank Case [ Tue May 15, 2018 9:59 pm ]
Post subject:  Re: Rear hatch lock

I'm sure there was a thread on here about adjusting the hatch lock/cams/assembly.

If anyone can point me to it, I would be grateful.

My problem is:

First the spring in the lock barrel was weak and would not return the key to the vertical position. Bit fiddly but I managed to fit a stronger spring.

Changed weak struts.

Changed latch pin aperture rubbers - looks great.

The link rod to the motor cam arm was bodged on and I fixed it. There was so much play in it, that it wasn't releasing the clams sufficiently to release the hatch.

Managed to get it to work.

Except, initially, a small bump (on our beautiful ultra smooth UK roads) would release the hatch. (Every 5 yards).

Bought newish pins.

Still cannot get them adjusted so that they strike a happy balance between opening the hatch and staying closed over the bumps.
So I have released one strut just so I can drive the thing without extra ventilation.

Author:  Waylander [ Wed May 16, 2018 7:11 pm ]
Post subject:  Re: Rear hatch lock

The release cable might be too tight, or the clams are completely cream crackered

It can be quite a mission to get it all setup right

Author:  Crank Case [ Wed May 16, 2018 8:33 pm ]
Post subject:  Re: Rear hatch lock

I'll adjust the threaded end of the connecting rod and see if that works.

If not, where could I get new clams?

Author:  Waylander [ Wed May 16, 2018 11:13 pm ]
Post subject:  Re: Rear hatch lock

Porsche dealer about £40 each, I will check tomorrow

Author:  white944 [ Thu May 17, 2018 3:44 pm ]
Post subject:  Re: Rear hatch lock

The motor should make one rotation and stop, like a wiper motor. You need to address this first.

Author:  Waylander [ Thu May 17, 2018 4:28 pm ]
Post subject:  Re: Rear hatch lock

quite right Michael

Author:  Waylander [ Thu May 17, 2018 4:31 pm ]
Post subject:  Re: Rear hatch lock

well i was miles out on price, they have gone up massively in the last year,

its this restoration competition that the OPC did, cleaned out the parts bins

they are now £89.99 each !!!!!!!

Author:  Crank Case [ Thu May 17, 2018 8:27 pm ]
Post subject:  Re: Rear hatch lock

white944 wrote:
The motor should make one rotation and stop, like a wiper motor. You need to address this first.


Okay. What determines that?

I looked at the PET sheets and no joy. Have you got a part number for the clams Waylander? I might get them from the US.

Author:  Waylander [ Fri May 18, 2018 4:41 pm ]
Post subject:  Re: Rear hatch lock

944 538 955 00 LH
944 538 956 00 RH

Author:  Crank Case [ Fri May 18, 2018 8:53 pm ]
Post subject:  Re: Rear hatch lock

Thank you.

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