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 F7P tappets
Author Message
mixpioneer
Site Subscriber

Joined: 29 Dec 2004
Posts: 395

Posted: Wed Mar 02, 2005 2:38 pm

Are the tappets supposed to have springs in them?
One of mine does, the rest dont.
huwwatkins
Site Subscriber

Joined: 10 Jun 2004
Posts: 2317

Posted: Wed Mar 02, 2005 2:39 pm

AFAIK the should have a spring in em
Neal
Forum Moderator

Joined: 18 Feb 2004
Posts: 7432

Posted: Wed Mar 02, 2005 3:10 pm

apparently they are meant to have a spring but they break

i dont recall any of mine being sprung, i would have noticed.
mixpioneer
Site Subscriber

Joined: 29 Dec 2004
Posts: 395

Posted: Wed Mar 02, 2005 3:14 pm

So not having them sprung will not make a difference to the engine running?
Neal
Forum Moderator

Joined: 18 Feb 2004
Posts: 7432

Posted: Wed Mar 02, 2005 3:29 pm

dunno, obviously marginal if so
Chris H
Forum Moderator

Joined: 02 Mar 2004
Posts: 19978

Posted: Thu Mar 03, 2005 1:25 am

another area where a lack of knowledge is dangerous.

Righty the tappet bit where the cam lobe press against has no spring or anything, the plunger in the middle is free to move in and out.

When you get this bit out, bang it on a bit of wood to get the plunger out you will then have the actual part that take sup the slack.

The end you see from the outside obviously rests on the valve stem, the other end has a spring loaded ballbearing which acts as a 1 way valve. Oil goes in there but doesn't come out.

Spring break then oil is free to go in and out thus no oil pressure so the tappet clearence isn't taken up.

They also clog up and get sticky so until the cars warm it taps, when its warm the oil thins again to allow it to work reasonably normally.

Do we want a tech article on this?
mals
Self Proclaimed Comic Genius

Joined: 04 Jul 2004
Posts: 3482

Posted: Thu Mar 03, 2005 1:27 am

Sounds like a good idean Chris!
Bridges
Level 3 User

Joined: 13 May 2004
Posts: 79

Posted: Thu Mar 03, 2005 12:39 pm

Indeed. Another one of those clear tech article and pics please. Lads you should put your tech articles into a book format as unlike Haynes they are... in colour!!! Written by those who have worked on and seen the cars. Also they are not written regarding brand new components that are not actually in the car. Why is it that Haynes spend feckin chapters explaining how to undo a simple standard bolt, and then show pictures of it!! However when it comes to removing something you cant see and you desperately want a picture of it in order to determine how it dismantles they spend a brief sentance explaining nothing. Mad Sorry am going on......
Chris H
Forum Moderator

Joined: 02 Mar 2004
Posts: 19978

Posted: Fri Mar 04, 2005 1:35 am

forgot to bring a tappet down so it won't be today!

I have 16 in a tupper ware tub in the flat.
Chris H
Forum Moderator

Joined: 02 Mar 2004
Posts: 19978

Posted: Sat Mar 05, 2005 3:19 am

article done

http://www.retro-renault.com/viewtopic.php?p=25935#25935
mixpioneer
Site Subscriber

Joined: 29 Dec 2004
Posts: 395

Posted: Sat Mar 05, 2005 4:47 am

Wicked article!

Cheers Chris!
finland 19
Level 3 User

Joined: 04 Feb 2005
Posts: 66

Posted: Sat Mar 05, 2005 10:12 am

what a pleasant chap that Chris is.

If I had a sister you could date her.
Very Happy
JB
Mr Quoter-vator

Joined: 16 Feb 2004
Posts: 7405

Posted: Sat Mar 05, 2005 2:26 pm

not wanting to misinterpret, but ur 1.4 doesnt have the same tappets...
finland 19
Level 3 User

Joined: 04 Feb 2005
Posts: 66

Posted: Sun Mar 06, 2005 3:14 am

i was simply saying that Chris is a pleasant chap.

But so are you Jon...

If I had a sister you could date her too.
mixpioneer
Site Subscriber

Joined: 29 Dec 2004
Posts: 395

Posted: Sun Mar 06, 2005 6:12 am

Just found a really good way of cleaning the plunger in the tappet.

Remove the plunger from the bucket and submerse it in white spirit with the ball bearing valve facing up. Then using a straw from a WD40 or simillar can, push on the ball bearing in a rapid up and down motion. This moves the plunger up and down whilst keeping the ball bearing valve open and pumps the white spirit in and out of the plunger. This should produce clouds of black dirt being rinsed out from the internals. Keep going until clean goes in and clean comes out.
Remove the plunger from the white spirit and repeat (this is to pump the white spirit out of the plunger). It is now ready to be primed with fresh oil.

None of my plungers were working when first removed (springs were stuck, plungers were flopping about), but after cleaning them like this, they are all springy as ever and working correctly.

Special thanks to Chris for the tech article, wouldnt have been possible without it!
Chris H
Forum Moderator

Joined: 02 Mar 2004
Posts: 19978

Posted: Sun Mar 06, 2005 7:26 am

did I not say to do that in the article? Yes I did indeed.
mixpioneer
Site Subscriber

Joined: 29 Dec 2004
Posts: 395

Posted: Sun Mar 06, 2005 7:38 am

I know, soz, i just did what you said in the article, but by just pressing or activating the plunger in the white spirit it wouldnt move because the ball bearing valve was closed, this needs to be open for the white spirit to enter and exit.
It was just a combination of the two methods you explained.
I gave you the credit for it, hence, "special thanks to chris for the tech article"
Chris H
Forum Moderator

Joined: 02 Mar 2004
Posts: 19978

Posted: Sun Mar 06, 2005 9:46 am

did I not say the straw from a carb cleaner can or similar to press the ball?
schakal
Spammer

Joined: 27 Jul 2004
Posts: 5717

Posted: Sun Mar 06, 2005 1:35 pm

you did my good man ,they just dont listen

i know how it feels Crying or Very sad
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