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how to change oil trap procedure

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Old Feb 16th, 2008, 15:39   #1
brens-s80
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Default how to change oil trap procedure

hi,

just finished replacing the oil trap this morning and it took about 1.5hrs. not to bad but very fiddly.

Before starting :

1.ensure that the new oil-trap comes with a rubber washer as per the pic attached , mine didn't so I had to source one locally.

2. Ensure you have your radio code to hand as the battery will be disconnected

The procedure:

1. using Tipex or paint put an alignment mark between the bellows and the metal body to provide a realignment mark once the work is completed.

2.disconnect battery + lead and HT spark lead from the Coil.

3. disconnect air intake pipe to throttle body.

4.remove any other cable obstructions to give you clear access to the full CI-Mechanism.

5.Loosen the jubilee clips retaining the bellows and remove bellows.

6. place a clean cloth over the plate to prevent any debris falling into it.

7. loosen the 13mm nut on the left hand side of the CI unit and the two on the right hand side (one nearer the wing and the other behind it nearer the block).

8. gently manipulate the CI unit out of its supports and using Tie-wraps support it up out of the way to give you access to the oil-trap behind.

9. Loosen the two 13mm bolts holding the oil-trap in place and remove . There is little space to undo the bolts so be patient ;-(.

10. Install the new oil-trap and tighten down.

11. Disconnect cable-ties and lower Ci-mechanism back into the support bracket and tighten up the nuts.

12.remove the cloth and re-install the bellows ensuring the alignment marks are in place.

13. reconnect Coil HT lead and Battery + cable

Job done.

hope this helps

brendan
Attached Images
File Type: jpg bellows-mark.jpg (184.0 KB, 184 views)
File Type: jpg ci-innerds.jpg (123.0 KB, 157 views)
File Type: jpg ci-lhs-loosened-nut.jpg (190.5 KB, 147 views)
File Type: jpg ci-lhs-nut.jpg (139.6 KB, 142 views)
File Type: jpg ci-rhs-nut.jpg (177.2 KB, 136 views)
File Type: jpg new-oil-trap.jpg (166.1 KB, 163 views)
File Type: jpg oil-trap-diagram.jpg (165.8 KB, 150 views)
File Type: jpg supported-ci.jpg (168.4 KB, 117 views)
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Old Feb 16th, 2008, 17:19   #2
Paul240480
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Default

Thanks Brens.
I shall print this one off & stick in my file of 'how toos' incase I need it.

Going on from that, what was your reason for changing the trap? If you had a problem what were the symptoms?

Only asking so that I can (hopefully) make a diagnosis when/if the time comes.

Thanks again.
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Old Feb 16th, 2008, 17:59   #3
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Default thanks,

Hi paul,

I had noticed an oily smell from the car's exhaust and when checking out the chamber under the belows and the bellows itself noticed that both were considerably oily inside . I had only cleaned both back late last year.

My assumption was that ( and I stand to be corrected) that after 20years the oil-trap was passing oil into the chamber as its the only route I could think off for this to happen.


Will check in about a month and let you know if this has alleviated the problem or not.

regards

brendan
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Old Feb 16th, 2008, 18:54   #4
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Ta for that Brens.

I had a case of oil leaking from the rocker cover a few years ago. The oil dripped onto the exhaust manifold & caused an awful pong.

This was tracked (via Paul Clifton) to being a blocked Positive Crankcase Ventilation system.

Like you, when I took the bellows off my plate was covered in gunk. Since clearing the PCV pipes & replacing the rocker gasket I've not had any more problems.

May be worth checking your PCV IF the oil/gunk does return.

Good Luck & I do hope your's is solved.
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Old Feb 16th, 2008, 23:21   #5
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Thanks for the description Brendan - very useful reference material
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