Torque value

52-54 ft. lb.

Thanks for the info Steve. Just to be sure though, there are 4 bolts that connect the drive shaft to the PTU which are torqued at 52 ft lbs. The PTU output shaft flange nut is a single nut which holds the planetary gear inside the PTU up against the bearing. If it is to tight it will crush a collapsible spacer.

OK you want the output shaft pinion nut torque. There isn't a number for that, you actually need to measure the amount of torque it takes to rotate the shaft while it is installed and assembled. Then you install the new crush sleeve and tighten the nut until it takes the same amount of torque to rotate the shaft.

From Ford -
NOTE: Rotational torque of the Power Transfer Unit (PTU) rear output shaft flange must be measured and recorded using a Nm (lb-in) torque wrench for correct pinion bearing preload when reassembled. This will be the torque-to-turn measurement.

Using a suitable torque wrench, measure and record the rotational torque of the Power Transfer Unit (PTU) output shaft.

Now you remove the flange and replace the worn parts and crush sleeve, then

Install the output pinion flange.

NOTICE: Refer to the rotational torque previously recorded with the Nm (lb-in) torque wrench. Tighten the pinion nut in small increments until it is within 0.3 Nm (3 lb-in) of the reference measurement. If 0.3 Nm (3 lb-in) is exceeded, then the collapsible spacer will be damaged and a new collapsible spacer will be required.


However in the PTU rebuild section it shows this if you are using new parts-

Install the output pinion flange.
Using the special tool to hold the output pinion flange, install a new pinion flange nut.
Special Tool: 205-126 Holding Fixture,

Drive Pinion Flange Torque:142 Nm

Some how I missed the step on measuring the torque before disassembling the PTU. I will try to torque it to 142 Nm and see how it runs. Thank you for your information. I'll let you know how thing workout.

Please let us know what happens, we are interested to see.

Cheers, Ken

I tightened the nut to 142Nm and I no longer have the clunking noise when shifting. It's been a few days now so I'm hoping for the best. By the way, the reason I had this problem was because the jiggle valve on the PTU was clogged which created a leak. I removed the PTU, cleaned it out, replaced all the seals,and added a drain plug. Not sure why Ford would make this a non-serviceable part. Anyway thank you for your information, it was very useful to me.

Derby Kid

Good to hear, please use 2CarPros anytime we are here to help.

Cheers, Ken

I believe he was referring to the vent on top of the unit. It can get blocked with dirt and crud and then when the PTU gets warm the pressure forces oil to leak past the seals. It is a pressed in part on top of the unit, to clean it is simple, just use a wire brush around it and be sure the cap can freely move.

Yes, and the wheels off the ground. You need just a new crush sleeve if the bearings, pinion and flange are good. However, if it has been driven much with a loose pinion it may be very noisy once it's repaired. Really depends on the amount of use and how loose.