Ford 8F35 Archives - Transmission Digest
Ford 8F35 maintenance tips: Planetary failure and no-pressure conditions

Our shop has had several vehicles come in with the Ford 8F35 transmission having planetary failure. Apparently, there was a run where the pinion needle bearings had a hardness problem (see Figure 1). Ford has a bulletin out (bulletin number 22-281), which provides a part number for this planetary assembly: the part number is JM5Z-7N473-C and

Figure 12.
How reading through service bulletins can turn a technician into the customer’s hero

Over the last 28 years of being a technician, I have developed the habit of checking for and reading technical service bulletins at the forefront of the diagnostic process, especially when an unfamiliar vehicle exhibiting blatant or straightforward concerns comes into the shop. I have found many valuable nuggets of information while reading over these

GFX introduces Ford, GM steel packs

GFX has introduced two new steel packs, one for Ford models and one for GM. The 14-piece pack for Ford transmissions (part no. 331810, pictured above) covers the 8F24 and 8F35 models. The 15-piece GM steel pack (part no. 426810, below) covers the 9T50.

Alto introduces cartridge filter for GM 9T, Ford 8F series

Alto has launched a new cartridge filter for the GM 9T series and Ford 8F series transmissions. Models covered include: GM 9T45, 9T50, 9T60 and 9T65; and Ford 8F35 and 8F40, model years 2017 and on.

TransTec introduces new Ford 8F35 overhaul kits

Freudenberg-NOK has launched new TransTec overhaul kits for the Ford 8F35 transmission. The kits can be purchased either with or without pistons. TransTec says their overhaul kits include everything you need for a complete mechanical repair, including all o-rings, metal clad seals, bushings and gaskets. Models covered include the following:

Alto adds new Ford 8F35 filter

Alto has introduced a new main internal filter for Ford 8F35 eight-speed transmissions, model years 2018 and on. The Alto part no. is 197944A.

The ins and outs of the Hydraulic Selectable One-Way Clutch

A Hydraulic Selectable One-Way Clutch (SOWC) is used in GM’s 9T50 (figure 1, above) and Ford’s 8F35 transmission (figure 2, below). Its function and design are quite clever. The center plate inside this selectable one-way clutch lugs to the Overdrive Carrier. On the top side of this center plate are spring-loaded struts. Integral to the