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Posted on Jan 02, 2017
The rear timing chain (or "cassette" as it's called in Ford lingo) is the chain that drives bank #1 (passenger side) cam. The front timing chain drives bank #2 (driver side) cam. There is a also a primary "jackshaft" chain that is driven by the crankshaft in order to enable both banks to be driven through a common shaft. The reason for this peculiar layout is because this engine is a "derivative" of the 4.0L OHV V6 engine it replaces. Ford simply installed a dummy shaft in place of where the camshaft used to reside on the original OHV engines. But above all else, the job you describe SHOULD NOT be carried out by anyone unfamiliar with this particular engine. There are NO timing marks on any of the drive sprockets, nor are they key to their corresponding shafts. To time this particular engine requires use of FIVE dedicated Ford/Rotunda tools that hold all relevant parts in proper position. Failing to carry this procedure out correctly, will result in the bending of ALL valves with 100% certainty!!! Therefore, it is best left to a Ford dealer technician to carry out. If you would like more information regarding diagrams, TSBs, and procedures with detailed illustrations, please e-mail me directly with your FULL Yahoo e-mail address so I can attach PDF files. Hope this helps.
Posted on May 18, 2008
What engine is this? if it is the 4.0L then talk to the dealer there is a recall on the camshaft drive chain hydraulic tensors, these will cause a rattle noise.
Posted on Nov 07, 2008
There are 2 different 4.0L type engines on Ford Explorers if it is the VIN letter E (8th number reading left to right) then yes it has a timing chain on the back and there are 3 timing chains on the front. You will need special tools to hold the timing in place whille you change the chains. You can buy them from several different tool manufacturers. I bought mine from Snap-on but it was several hundred dollars and came with many different adapters for several different engines. But be prepared to spend a little money they aren't cheap even the small sets. Depending upon how much you'll use them you may want to see how much it would cost to have it done or try to find someone to loan you some. If you do then it's just a matter of following the procedure in the maintenance manual. As far as how hard is it? It isn't rocket science but I would make sure you read over the procedure in a repair manual, see if you can get the special tools you will need and depending upon your mechanical aptitude determine if it's something you want to tackle yourself. Good luck.
Posted on Nov 05, 2009
They will not loan you the tools.....how else will they continue to rip off the average garage junkie and make lots of money?
Posted on Nov 18, 2009
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