Power Steering Box
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More Turbo
Joined: Aug 2017
Posts: 604
Likes: 154
From: NJ
Power Steering Box
So, I have a 77 F150 4x4 with power steering. I am looking for the master seal kit for the steering box. I see a bunch of them but some say for 4x4 some say no, some say for Bronco but not F150 other say the do everything f150,250,350 others say not. I am confused as hell. Want to order the right one the first time, has anyone got a part number for the correct set? Any help would be great. Truck is currently stranded until i change the seals....
Thanks in advance, Nick
Thanks in advance, Nick
Thread Starter
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More Turbo
Joined: Aug 2017
Posts: 604
Likes: 154
From: NJ
I did look on rock auto, but when i search the manufacturer site for compatibility, they all say different vehicles. If im pulling it off the truck, i want to just change them all. Every time I only do part of something, within a month I'm doing the other part....
Moderator & parts slinger
Joined: Feb 2007
Posts: 50,148
Likes: 5,783
From: S/W Missouri, Polk county
ADVICE 1: RENT AN ACTUAL PITMAN ARM PULLER, DO NOT USE A TIE ROD FORK. Remove the pitman arm. Remove the snap ring. Thread the nut back on just a couple of turns. Crank the engine, and turn the steering wheel from stop to stop, until the pump pressure pops the seals and spacers out. The nut keeps the seals and spacers on the shaft, in correct order and orientation. Have a large drip pan because you are going to dump some fluid.
Keep your old seals and spacers. Lay them out, in order, and oriented correctly, and then photograph them. You may need some of them. The kit can come with different thickness spacers, and might not be the same as the old ones. Fortunately, the spacers can be reused. The nut on/pressure removal trick keep you from using a screw to remove both seals and possible save one.
ADVICE 2. It’s been done before with the box on the bench, and can be done on vehicle also. For the output seal, RENT AN ACTUAL PITMAN ARM PULLER, DO NOT USE A TIE ROD FORK. And remove the pitman arm from the steering box output shaft (called a sector shaft). Then there's a snap ring that needs to be removed. Once that's out of the way there is a washer, then a seal, then another washer and another seal. Remove the first washer exposing the first seal. Take a sharp center punch and pierce the seal, screw in a sheet metal screw and pry the seal out. You can do two screws 180 degrees apart too.
To replace the seals, apply a thin coating of grease to the inner lip of the seal and a thin coat of sealer to the outside diameter of the seal (I like No. 2 Permatex non-hardening). Slide the seal over the shaft and take a deep socket that’s just slightly smaller than the OD of the seal and drive the seal in until it seats. Replace the washer then the next seal, washer then snap ring. Reinstall the pitman arm, hook up the steering linkage and that's it. If you don't have a socket that's deep enough you can use a piece of pipe or PVC tubing too. The killer on these is getting everything centered. With the exception of the sector shaft Ford basically only sold the internals as an assembly.
The input shaft (F3AZ-3E502-A) & sector shaft (D7AZ-3E501-A) seal kits are available from Ford and auto parts stores.
Seal kit, steering gear sector shaft
Parts list #64, With gear ID SPA-AB, AJ, AN, BN, BS, BX, CC, CN
Basically this covers all 73-79 2WD F100-350 w/powersteering
D7AZ-3E501-A.. Sector Shaft Seal Kit
Last dealer cost $29.41 List $43.71
So try the dealership OR ……
Parts International, Farmers Branch, TX has 50 (972) 241-8730
Green Sales, Cincinnati, OH has 19 (800) 543-4959
Manderbach Ford, Temple, PA has 5 (610) 929-3683
Freese Motor Inc., Monticello, IA has 4 (319) 465-3541
Herb Chambers Ford, Westboro, MA has 2 (508) 366-8311
https://www.ford-trucks.com/forums/1...+steering+seal
Steering box input seal. Try dealership or Autozone part # 8520 $8.99 in stock. Ford part # F3AZ-3E502-AInput Shaft Seal Kit…
Undo bolt at rag joint, remove plastic cover on steering column (in cab) loosen steering column bolts (2 bolts to dash) pull up on column and disconnect rag joint from steering box. Drill small hole in dust seal on steering box & screw a screw in and remove seal remove snap ring, drill hole in seal remove with screw. Replace seal, snap ring, dust seal and reconnect steering shaft and at column.
F250 4wd remove steering shaft assembly, same seal set up as 1/2 ton.
Keep your old seals and spacers. Lay them out, in order, and oriented correctly, and then photograph them. You may need some of them. The kit can come with different thickness spacers, and might not be the same as the old ones. Fortunately, the spacers can be reused. The nut on/pressure removal trick keep you from using a screw to remove both seals and possible save one.
ADVICE 2. It’s been done before with the box on the bench, and can be done on vehicle also. For the output seal, RENT AN ACTUAL PITMAN ARM PULLER, DO NOT USE A TIE ROD FORK. And remove the pitman arm from the steering box output shaft (called a sector shaft). Then there's a snap ring that needs to be removed. Once that's out of the way there is a washer, then a seal, then another washer and another seal. Remove the first washer exposing the first seal. Take a sharp center punch and pierce the seal, screw in a sheet metal screw and pry the seal out. You can do two screws 180 degrees apart too.
To replace the seals, apply a thin coating of grease to the inner lip of the seal and a thin coat of sealer to the outside diameter of the seal (I like No. 2 Permatex non-hardening). Slide the seal over the shaft and take a deep socket that’s just slightly smaller than the OD of the seal and drive the seal in until it seats. Replace the washer then the next seal, washer then snap ring. Reinstall the pitman arm, hook up the steering linkage and that's it. If you don't have a socket that's deep enough you can use a piece of pipe or PVC tubing too. The killer on these is getting everything centered. With the exception of the sector shaft Ford basically only sold the internals as an assembly.
The input shaft (F3AZ-3E502-A) & sector shaft (D7AZ-3E501-A) seal kits are available from Ford and auto parts stores.
Seal kit, steering gear sector shaft
Parts list #64, With gear ID SPA-AB, AJ, AN, BN, BS, BX, CC, CN
Basically this covers all 73-79 2WD F100-350 w/powersteering
D7AZ-3E501-A.. Sector Shaft Seal Kit
Last dealer cost $29.41 List $43.71
So try the dealership OR ……
Parts International, Farmers Branch, TX has 50 (972) 241-8730
Green Sales, Cincinnati, OH has 19 (800) 543-4959
Manderbach Ford, Temple, PA has 5 (610) 929-3683
Freese Motor Inc., Monticello, IA has 4 (319) 465-3541
Herb Chambers Ford, Westboro, MA has 2 (508) 366-8311
https://www.ford-trucks.com/forums/1...+steering+seal
Steering box input seal. Try dealership or Autozone part # 8520 $8.99 in stock. Ford part # F3AZ-3E502-AInput Shaft Seal Kit…
Undo bolt at rag joint, remove plastic cover on steering column (in cab) loosen steering column bolts (2 bolts to dash) pull up on column and disconnect rag joint from steering box. Drill small hole in dust seal on steering box & screw a screw in and remove seal remove snap ring, drill hole in seal remove with screw. Replace seal, snap ring, dust seal and reconnect steering shaft and at column.
F250 4wd remove steering shaft assembly, same seal set up as 1/2 ton.
Cargo Master
Joined: Nov 2007
Posts: 2,238
Likes: 475
While it's apart, inspect the box casting really well where the seals mount. There have been boxes that have excessive wear in those areas either from core shift when they were cast, or because of years of slop, and they generally won't seal up, or won't stay sealed long. Some J-B weld could be used to build up the casting if it's really bad, but I wouldn't consider it a long term fix. Either way, I'd use some type of retaining or sealing compound on all the external seal to housing surfaces.
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