348 front engine chain cover

There is a 5 part services that goes very deep done by Phil out here (pnicholasen)

 

The cover is not actually that difficult to get off, I never had to use any of that shenanigans going on in that video to remove mine. I literally slid it off by hand after using a couple of Plastic/Nylon wedges to pries the cover and inch it forward incrementally but gently tapping it with the nylon hammer, you can feel it starts moving quite easily when the load is square on. What is happening at this point is that bearing in the block on the timing shaft, is coming out of its recess during this part of the operation.

When you go to remove the cover, you need to have undone the oil pump chain drive sprocket, as when you pull the cover off, the timing sprocket will come with the cover as that bearing slides out pretty easily from the block, so both chains and sprockets come off all together as per my picture below.
The timing chain tensioner pops out but thats okay, you need to pull it apart anyway to replace the pad on the tensioner.

When you reassemble it, you put everything on the engine and slide the cover over and use a tube socket to tap the cover and the timing shaft into the inner timing drive bearing which you have already fitted to the block...the new tensioner will not be released until everything is on, you just turn the plastic screw to release it.
You would have already released the timing chain tensioner before sliding the cover on.

You can see here how it comes off, you can see to the left, or the bottom of the cover the oil pump chain tensioner, and then separate to the cover up the top right, I have the timing chain tensioner sitting on the bench in bits.....

Hope it all makes sense...


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Mine was roller also. It's not like Ferrari was contacting customers to bring them in for warranty work. Most customers never knew there was an issue and dealers were anxious to tell people. I bet 80% of the pre TSB cars still have rollers.
Update the oil chain tensioner pads while in there there is a 360 update for them.

 

WOW!! Dodged one!!! TSB 10-34. Change that bearing.

Mine was the dodgy one too.

sjd

 

The 360 update only covers the Oil Pump chain tensioner, not the timing chain tensioner...
You have to get the timing tensioner pad from Scuderia Rampante....you have to email them, and they'll whip one up for you. It comes as a kit.

 

Yes oil pump chain not timing chain, this was from my order last year, oil pump chain on the right.
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The 147338 is no longer available as I found out when I did mine a few months ago.
You have to go to SR Innovations...

 

Maranello classic parts....

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Not available, they show them as available but they currently are not, I did try them as they list one, but when you order it they bounce back and its not available, I have been down this road before very recently.
It says "POA" when you actually put it in your basket.
SR innovations is the best solution, not the cheapest, but worth the money.

 

right , few weeks ago they were available there not POR or POA, but there was a post out here, now they are gone. Harder and harder to find like a few parts are these days. Ohh, there is also a range rover xref for the same part btw. The SRI bit is top shelf and likely a better option anyhow.

 

Hang on a minute, you think it hasn't been done for 20 years? How many miles has it done in that time? I would be surprised if the timing tensioner pad isn't worn if its done some miles?

 

For sure the SRI is totally top shelf, but I like to think our cars are top shelf too, but I have to say, I would like that part number for the Range Rover X-ref,. I'd like to buy one and have a look, see what the quality is like.....

 

What REALLY wears them fast is the car sitting with no miles. Cold starts with no oil on on them where it all dripped back down causes the chain to bite in.

 

Yeah, it really does!!
I use Lucas synthetic oil additive in my engines, that extra zing of Zinc which most modern oils don't have any more is essential for these older engines...
It helps with the oil clinging to various essential surfaces when the engine cools down too...

 

Mine with 18K on it. Replaced the roller bearing, 360 tensioner ect ect
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You need a bearing splitter to pinch under the inner race. I didn't have one, so I paid my friendly neighborhood tech to do it.

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Pinch under the race (at the arrow). I can clarify further if needed.

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