A4LD Sub-Kit

6-12-09

Apply oil for both the overdrive and intermediate servos in Ford's A4LD and it's electronic four and five speed successors, the 4R44E, 4R55E, and 5R55E, is routed through the hollow servo pins. This requires the pin to seal in the case. From the factory, this system works fine, but as the transmission ages and the servos go through many apply and release cycles, the case wears, creating a leak. This wear is compounded on the 5R55E, as it uses the overdrive servo for Second gear as well as Fifth. Not only does this wear leak apply, but it also allows release oil to escape, causing delayed engagements and dragging bands.

The A4LD kit contains tooling necessary to repair both the Overdrive and Intermediate servo pin bores. We save your case by reaming out the case and installing a brass bushing that has proven to wear considerably better than the stock aluminum case. Due to the design of the pin bores, the A4LD kit requires a special reamer, as use of the 5/8" reamer does not leave adequate material to safely install a bushing. The A4LD is a BLACK series kit, and is available as either a Master (pictured) or a Sub kit.

A4LD Kit Contents and Pricing
Master	Sub
A4LD Servo Jig 9/16" Reamer 19/32" Reamer 9/16" Guide 19/32" Guide Six Bushings .473 Gauge Pin Driver	A4LD Servo Jig 19/32" Reamer 19/32" Guide Six Bushings .473 Gauge Pin
Replacement Bushings Sold Separately

This is a shot of the Overdrive bore on a 5R55E out of a 2000 Ranger with a little under 100,000 miles. Notice the Ridge the pin has worn on the bottom of the bore, very similar to the wear on 5R55W/S/N's and AX transaxles.