Question about 2003 Ford Explorer

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How to set timing chain on 2003 ford explorer there is no marking on the timing chain

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  • Ford Master
  • 454 Answers

Go to autozone. They sell a real nice easy to follow cd that will walk you step by step thru the process.

Posted on Apr 23, 2015

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  • Ford Master
  • 880 Answers

Its not the chain that has marks. it is the cam and crank gears

Posted on Apr 16, 2015

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Posted on Jan 02, 2017

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SOURCE: 1997 ford explorer 4.0 sohc how to set timing

There are no timing marks. Timing is done using special tools to hold the crank at top center and a tool to hold each camshaft in position. the cam sprockets are not pinned to the cams. there are also dummy tensioners installed to take up the slack till the tightening is done. Also there are chains at the back of the motor that can only be timed with the motor out of vehical.

Posted on Feb 21, 2009

  • 1 Answer

SOURCE: how do you set the timing marks on 97 ford probe?

what marks are used when setting timing on 1997 ford probe

Posted on Apr 24, 2009

SOURCE: Need timing marks for 2002 ford explorer 4.0

There are no marks on this one. There is a special tool set to align camshafts ($900). The best you can do is to bring #1 cyl to TDC compression with both cam(valve) covers off. #5 cyl should have lobes at equal opening, exhaust just closing and intake just opening.. #1 cyl cam lobes should each be diametrically opposed to the positions of #5. If cams need to be moved, there is no registration of gear onto cam. Just loosen bolt holding gear and move cam. Retighten bolt. Roll thru 2 crank revolutions and check cam timing again.Simple.

Posted on Jul 24, 2009

  • 108 Answers

SOURCE: how hard is it to replace timing chain on ford

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

kennyz195
  • 61 Answers

SOURCE: 1999 Ford Expedition 5.4L Timing chain setup

.

  1. Remove the engine front cover. For additional information, refer to Engine Front Cover in this section.
  1. Remove the crankshaft sensor ring from the crankshaft.
    a0044041.gif
  1. Rotate the crankshaft until the timing mark on the RH camshaft sprocket is approximately at the 11 o'clock position and the timing mark on the LH camshaft sprocket is approximately at the 12 o'clock position.
    a0049532.gif
  1. Using the special tool, position the crankshaft as shown.
    a0041102.gif
  1. Install the special tool.
    aa5423a.gif
  1. NOTE: LH shown; RH similar.
    Remove the two bolts, the timing chain tensioner and tensioner arm.
    aa5952a.gif
  1. Remove the LH and RH timing chains and the crankshaft sprockets.
    • Remove the special tool from the crankshaft.
    • Remove the timing chains from the camshaft sprockets.
    • Remove the right and left timing chains and the crankshaft sprocket from the crankshaft.
    a0029151.gif
  1. ani_caut.gif CAUTION: The bolts are different lengths and must be returned to their original location.
    NOTE: LH shown; RH similar.
    Remove the bolts and the timing chain guides.
    a0044040.gif
Installation
  1. ani_caut.gif CAUTION: Timing chain procedures must be followed exactly or damage to valves and pistons will result.
    ani_caut.gif CAUTION: Do not compress the ratchet assembly. This will damage the ratchet assembly.
    Compress the tensioner plunger, using an edge of a vise.
    da0605a.gif
  1. Using a small screwdriver or pick, push back and hold the ratchet mechanism.
    da0606a.gif
  1. While holding the ratchet mechanism, push the ratchet arm back into the tensioner housing.
    da0607a.gif
  1. Install a paper clip into the hole in the tensioner housing to hold the ratchet assembly and plunger in during installation.
    a26917a.gif
  1. Remove the tensioner from the vise.
  1. NOTE: There are 61 links in the timing chain.
    If the copper links are not visible, mark two links on one end and one link on the other end, and use as timing marks.
    a0038720.gif
  1. Install the timing chain guides.
    a0044063.gif
  1. Using the special tool, verify correct crankshaft position.
    • Remove the special tool.
    a0041102.gif
  1. NOTE: Crankshaft sprockets are identical. They can only be installed one way. Refer to the following illustration for correct crankshaft sprocket installation.
    If removed, install LH and RH crankshaft sprockets.
    a14824b.gif
  1. Install the LH timing chain onto the crankshaft sprocket, aligning the one copper (marked) link on the timing chain with the slot on the crankshaft sprocket.
    a0041197.gif
  1. Position the LH timing chain on the camshaft sprocket with the two copper (marked) chain links and the camshaft sprocket timing mark aligned.
    a0049191.gif
  1. Position the RH (outer) timing chain on the crankshaft sprocket, aligning the copper (marked) link with the timing mark on the sprocket.
    a0041196.gif
  1. Position the RH timing chain on the camshaft sprocket. Make sure the two copper (marked) links align with the camshaft sprocket timing mark.
    a0041104.gif
  1. NOTE: LH shown; RH similar.
    Position the tensioner arms and tensioners, and install the bolts.
    aa5952a.gif
  1. Remove the tensioner retaining clip.
    a26273a.gif
  1. As a post-check, verify correct alignment of all timing marks.
    a0041106.gif
  1. Remove the special tool.
    aa5423a.gif
  1. Position the crankshaft sensor ring on the crankshaft.
    a0044041.gif
  1. Install the engine front cover. For additional information, refer to Engine Front Cover in this section.


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Posted on Apr 07, 2010

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Look for some Youtube videos on this repair. If I remember correctly the links on this chain have different color metal for the spots that the cam tooth goes against. When each side is in the proper tooth the right and left colored links will be on the cam mark and the crank mark should be on the timing TDC mark. Sounds like the slack you describe is wrong and a tooth is off because the tensioner is allowing slack.. You need to slip a tooth one way or the other until the tensioner has room to be in a neutral position.

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zjlimited_1748.jpg

Fig. 19: Timing chain alignment - 4.0L engine (click image for zoom)

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There is a detailed explanation in the ford workshop manual for this, and some special tools are required to get the timing right. I would not recommend doing this without the special tools. Contact your local ford dealer, they might loan you the tools and the manual for a fee.
Hope this helps, Mark

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