Question about 1998 Ford Explorer

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1998 ford 4.0 sohc v6 explorer sport 4wd. 148000

1998 ford 4.0 sohc v6 explorer sport 4wd. 148000 mi. can the timing chain GUIDES be replaced without pulling motor. ( all literature says no, I'll bet a savey ford tech does it with motor in vehicle. Am I wrong ? Dave in rainy Northern Ca. Thanks for any help Dave.

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Depending on which gears and chains you are referring to. The front assembly can be changed with motor in the vehicle. However it is no simple task and requires specific tools to hold the cams in position. Myself being a cheapskate and fabricator made my own tools. For those not able to do this, the tools can be found on eBay for about $239. Search otc6488. The rear chain and gears however, require the engine be removed as the flywheel or torque converter must be removed to access. I just completed such a repair took about three days total. Granted I only had to change front chain, gears, and rails. Add about 4 more days for rear assembly. Hope this helps

Posted on Apr 10, 2015

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Hi, as far as i can remember its impossible to do the work without removing the whole lot as you just have not got enough room to get the tools in to get the job done, you could contact your nearest main dealers technical department but im pretty sure that the last one we did here we had to take the whole lot out as we could not get the tools in as their just isnt enough room they build these engine big enough to fill the engine bay leaving you no room to carry out these type of repairs so taking the engine out is the only way your going to get this work carried out.

Let me know how you get on or if you need further assistance ok.

Make sure you purchase a workshop manual as this will give you all the correct settings your going to need ok

Posted on Feb 01, 2010

  • Raymond Elliott Apr 10, 2015

    The forward timing chains and guide assemblies can be changed without pulling the motor. However it does require specific tools to hold the cams in place. ( I made my own for the job ). The rear chain does require engine removal, as the fly wheel or torque converter have to be removed to gain access. My peticular application was a 2001 Explorer

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