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BigAl P4
Joined: 06 May 2003 Posts: 2990 Location: U.K Surrey
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Posted: Wed Jan 12, 2011 11:26 pm Post subject: Fuel filler cap overhaul tutorial |
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Following from this thread
http://www.alfa-pages.co.uk/viewtopic.php?t=6456&highlight=fuel+smell
I was after replacement fuel filler cap rubber, as I lost mine, it probably flew out when I dropped my cap once.
I got a whole cap from Alex, thanks mate, I took that one apart and took some photo’s for a tutorial.
I wanted to service mine as it has started to become stiff and instead of just filling up the lock with white grease, I would properly service it.
Pics of it apart
You can see the rubber gasket that I wanted on the left, it sits in the part next to it, that has a thread and screws into the filler neck.
This then pushes onto the cap on the right, with the bits in the middle looking like this
The metal clip holds the lock
in place.
When the lock is turned the nodule at the end of the barrel turns on the spring loaded plastic slider
This either locks or unlocks the threaded part by locating in the grooves
here you can see it in action
The barrel has a stop tag on it which the cap allows the key to turn a set amount
It’s not easy to see.
To take it apart there are 3 lugs that hold the whole thing together, prize them over one by one. I heated up the cap with a hair dryer so it didn’t snap.
The whole thing is spring loaded by a loose spring, so don’t loose the spring when you take the centre out.
You can now remove the U shaped clip holding in the barrel
Make sure the lock is in the position where the plastic slider is out, otherwise when you take out the barrel the spring and plastic slider will fly out.
Check to see that all the tumblers move freely, if they don’t you can use a screwdriver and tap from the bottom side until it moves freely.
I chose to tap all the corrosion out lightly with the screw driver and soak it in lime scale remover, then clean with a wire brush, rinse with water and dry with a hair drier and lube it up afterwards. I would fill the whole lot up with white grease and never have to worry about it again.
Fit together by putting in the spring loaded plastic slider, then the lock and then the U shaped clip to retain the lock. Then put the spring back in place and push the cover back on, making sure all 3 clips lock back in place.
When I took mine apart I noticed it was different, there are no 3 clips but a round plastic cover that is glued in place.
Luckily mine came off without any problem, also the whole of the middle part is made of metal and not plastic like the other one. This metal will never allow the key to turn more than it should, unlike the other one which did.
I also noticed a rubber grommet around the barrel
which is missing from the other one
All three parts
When I put mine back together, I weighed down the centre part and applied industrial strength super glue to both parts and then let it set for 1 hour. The thing is under constant pressure from the spring so no harm. _________________ x2 33 16v
pictures http://www.alfa-pages.co.uk/viewtopic.php?t=5203 |
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bobbber P4
Joined: 14 May 2003 Posts: 2162 Location: The Greatest Town on Earth - Swadlincote, UK
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Posted: Thu Jan 13, 2011 12:07 am Post subject: |
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Blimey Al... new camera for Xmas?!?! |
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33bits 16 Valve
Joined: 23 May 2009 Posts: 1067 Location: Clevedon. North Somerset
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Posted: Thu Jan 13, 2011 12:09 am Post subject: |
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Wow!! i look forward to reading your engine build tutorial Al, we will have to get more web space first. _________________ 155 sportpack
33 16v Sportwagon
33 Permanent 4
33 16v (for sale)
156 JTS sportwagon
contact me for any 33 parts. Alex, 07896-327708
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Ian M Green Cloverleaf
Joined: 13 Mar 2003 Posts: 911 Location: Bath Somerset
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Posted: Fri Jan 14, 2011 7:08 pm Post subject: |
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Nice one Al.
Dont spose you know where I can get those u-shape clips from? _________________ Presntly own
Red Abarth 500c |
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greencloverleaf pat Gold Cloverleaf
Joined: 09 Feb 2006 Posts: 517 Location: crawley west sussex
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Posted: Fri Jan 14, 2011 8:23 pm Post subject: car |
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good tutorial alan and good pics and easy to follow . |
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Guest
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Posted: Mon May 23, 2011 1:10 am Post subject: |
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Excellent step by step instructions for a simple but satisfying evening project
Did one a week or so ago and ended up, as you suggested, using graphite grease before assembly. Works great and feels wonderful when inserting the key without any notchiness.
However, just finished a second one and before putting it together I was wondering if it really is a good idea to use any grease at all when putting it together. The only metal parts are in the lock cylinder while everything else is plastic-to-plastic movements. The first one I took apart did indeed have some kind of grease in it while the second one -- which was in better shape -- didn't. Talking to people that knows more about locks than I do they suggested that one should never use grease on any lock cylinder. They have suggested that the only lubrication that should be used is special lock oil for the cylinder while everyting else should be left without lubrication.
I'm inclined to believe they may be correct, except I would want some kind of oil or grease covering the cylinder to avoid oxidation and buildup of deposits, which I found on both of these.
What's the consensus? Should the lubrication be limited to oiling the lock cylinder and leaving the various plastic parts alone. |
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JeremyC Gold Cloverleaf
Joined: 06 Sep 2008 Posts: 583 Location: Petersfield, Hampshire
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Posted: Mon May 23, 2011 9:37 am Post subject: |
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Plastic to plastic = silicone
Locks - graphite powder _________________ '93 Black 33 1.7 16v |
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BigAl P4
Joined: 06 May 2003 Posts: 2990 Location: U.K Surrey
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Posted: Mon May 23, 2011 10:13 am Post subject: |
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Thanks guys,
Ian M, sorry I have no Idea where to get the u-shaped clips from.
As to lubrication, I would think a lock person would know more about locks than us grease monkeys, any reason they advise special lock oil and nothing?
JC, powder, hmm _________________ x2 33 16v
pictures http://www.alfa-pages.co.uk/viewtopic.php?t=5203 |
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JeremyC Gold Cloverleaf
Joined: 06 Sep 2008 Posts: 583 Location: Petersfield, Hampshire
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BigAl P4
Joined: 06 May 2003 Posts: 2990 Location: U.K Surrey
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