Thursday, November 18, 2010

Does a 2001 Ford Sport Trac How Front & Rear Timing Chains?

Hi I have a 2001 Ford Sport Trac. I am told to change the timing chain you must change both front and back and it can be a 12+ Hour Job. I am trying to find a motor diagram and find out why it has front and back timing chains?

I am not a newer vehicle mechanic but it seems extremely odd to have both front and rear timing chains? Can someone help me out with a answer. Maybe a link to a motor diagram? ThanksDoes a 2001 Ford Sport Trac How Front %26amp; Rear Timing Chains?
The rear timing chain (or %26quot;cassette%26quot; 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 %26quot;jackshaft%26quot; 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 %26quot;derivative%26quot; 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.Does a 2001 Ford Sport Trac How Front %26amp; Rear Timing Chains?
You're Welcome. I will get right to it.

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Does a 2001 Ford Sport Trac How Front %26amp; Rear Timing Chains?
If that's the 4.0 overhead cam then yes it has a front and back chain one to each head and a chain from crank to the shaft that both those drive from. It's a real winner. There have been service bulletins for updated parts and I'd make sure it gets all the newer parts in hopes it might stay together for a while.

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