4.4 4.8 Timing Chain Guide

[electricalserv x5]

Originally Posted by StephenVA

Thanks for the insight as it coresponds to what I call "Good Practices" of vehicle maintenance. Replace and repair as required before total failure occures. Always cheaper than the alternative results. (ask me how I know...did wheel bearings once on another vehicle, after I egnored the squeeks, creaks, and noise. Welded bearing races on the spindles, trashed the rotors due to heat warping, had to replace the spindle, brearings, rotors, brakes, ball joints, tie rod ends, etc. Out in a driveway while it was snowing. What fun that was. Lesson learned the hard way.)

Keep up the great posts as it help us all to do preventive repairs to avoid the death rattles.

Hi , your 4.8is[n62] has two tensioners and two timing chains.keep running good oil.

[StephenVA]

Originally Posted by electricalserv x5

Hi , your 4.8is[n62] has two tensioners and two timing chains.keep running good oil.

I follow the preventive maintenance model for severe vehicle mileage. I change the oil (Mobil One) every 12-13 months or approx 3,000 miles. Lots of short distance trips (less than 6 - 50 miles), followed by a run around the interstate with a heavy foot. All the fliuds are getting replaced this winter (49K) as I have another vehicle or two to use when weather sucks or have a meeting where safe parking will be an issue.
The X5 sits outside with a Battery tender on her and lots of Wax. One very clean 4x4 beast.

[e30cabrio]

I ordered the tensioner today and will replace it.

[TiAgX5]

Originally Posted by e30cabrio

I ordered the tensioner today and will replace it.

I would hold off until we find out when EXACTLY the revised tenisioners were put into production M62s. You have an '03, and may ALREADY have the revised units.

[e30cabrio]

Mine has a 12/02 production date. It couldn't hurt to replace it can it?

[TiAgX5]

Originally Posted by e30cabrio

Mine has a 12/02 production date. It couldn't hurt to replace it can it?

No harm in replacing.

[TiAgX5]

I wonder if I can get my inspection camera probe down thru the oil fill opening to view the tensioner. Will try.

[bobzdar]

Originally Posted by TiAgX5

I wonder if I can get my inspection camera probe down thru the oil fill opening to view the tensioner. Will try.

You wouldn't be able to see anything, anyway. I think the updated tensioner just has a stiffer spring in it. Either way, it takes about 10 minutes to take the tensioner out if you want to inspect it, very easy job.

[e30cabrio]

Thanks. Any idea where this is hiding in the Bentley? Under Timing Chain it only shows the 6 cylinder in the index.

Found it uninstall 117-55 install 117-86. Torque is 65nm/48ft-lb.

[e30cabrio]

Tensioner came yesterday. I was concerned it might not be OEM. Not anymore. lol