Manual Steering box leak
Moderator & parts slinger
Joined: Feb 2007
Posts: 50,186
Likes: 5,792
From: S/W Missouri, Polk county
Get the seal and replace it on the truck. A reman box gets you new paint job and no real improvement in the overall design. A Redhead on the other hand does.....https://www.redheadsteeringgears.com...steering-gear/ Why a Red head is worth it. https://www.redheadsteeringgears.com/aboutprocess/
Here is the R&R of input and output seal, for a 4wd p/s box. Should be pretty much the same.
"It’s been done before with the box on the bench, but I think it can be done on the vehicle? Remove the pitman arm from the steering box output shaft (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 sealout. You can do two screws 180 degrees apart too.
Once thefirst sealis out, remove the second washer and repeat the process. (you can also try just removing the snap ring, (after the pitman arm is off) turn the wheel to the left and start the engine, it will usually blow the whole thing out, both seals and spacers but you better have a huge drain tray under it, then reassemble.)
To replace the seals, apply a thin coating of grease to the inner lip of the sealand a thin coat of sealer to the outside diameter of the seal(I like No. 2 Permatex non-hardening).
Slide the sealover the shaft and take a deep socket that’s just slightly smaller than the OD of the sealand drive the sealin until it seats. Replace the washer then the next seal,washer then snap ring.
Reinstall the pitman arm, hook up the steeringlinkage and that's it. If you don't have a socket that's deep enough you can use a piece of pipe or tubing too.
The killer on these is getting everything centered. With theexception 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 F100-350w/powersteering
D7AZ-3E501-A..Sector Shaft Seal Kit
Last dealer cost $29.41 List $43.71
So try the dealership OR ……
Parts International, FarmersBranch, TX has 50 (972) 241-8730
Green Sales, Cincinnati, OH has19 (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/1196442-steering-gear-box.html?highlight=power+steering+seal
Steering box input seal…piece of cake 30 minutes 78 F250. Try dealership OR……Autozone part # 8520 $8.99 in stock. Ford part #F3AZ-3E502-AInputShaft 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 column.
Here is the R&R of input and output seal, for a 4wd p/s box. Should be pretty much the same.
"It’s been done before with the box on the bench, but I think it can be done on the vehicle? Remove the pitman arm from the steering box output shaft (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 sealout. You can do two screws 180 degrees apart too.
Once thefirst sealis out, remove the second washer and repeat the process. (you can also try just removing the snap ring, (after the pitman arm is off) turn the wheel to the left and start the engine, it will usually blow the whole thing out, both seals and spacers but you better have a huge drain tray under it, then reassemble.)
To replace the seals, apply a thin coating of grease to the inner lip of the sealand a thin coat of sealer to the outside diameter of the seal(I like No. 2 Permatex non-hardening).
Slide the sealover the shaft and take a deep socket that’s just slightly smaller than the OD of the sealand drive the sealin until it seats. Replace the washer then the next seal,washer then snap ring.
Reinstall the pitman arm, hook up the steeringlinkage and that's it. If you don't have a socket that's deep enough you can use a piece of pipe or tubing too.
The killer on these is getting everything centered. With theexception 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 F100-350w/powersteering
D7AZ-3E501-A..Sector Shaft Seal Kit
Last dealer cost $29.41 List $43.71
So try the dealership OR ……
Parts International, FarmersBranch, TX has 50 (972) 241-8730
Green Sales, Cincinnati, OH has19 (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/1196442-steering-gear-box.html?highlight=power+steering+seal
Steering box input seal…piece of cake 30 minutes 78 F250. Try dealership OR……Autozone part # 8520 $8.99 in stock. Ford part #F3AZ-3E502-AInputShaft 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 column.
Hotshot
Joined: Apr 2009
Posts: 14,333
Likes: 247
From: Stanley, VA
Manual steering boxes take a different sector shaft seal than power steering, and 4WD is different than 2WD.
The seal for a 2WD manual steering box is C7OZ-3591-A
The one for 4WD box is D2HZ-3591-D
There are quite a few of these seals still available. Here are a couple that look to be relatively close to you:
For the C7OZ seal
Soeby Motors, Walhalla, ND has 4 (701) 549-3711
Wolf Ford, Lidgerwood, ND has 3 (701) 538-7337
Green Sales, Cincinnati, OH has 183 (800) 543-4959
For the D2HZ seal
Soeby Motors has 2
Ranchland Ford, Broken Bow, NE has 1 (308) 872-6488
Green Sales has 26
If you want more sources , let me know.
The seal for a 2WD manual steering box is C7OZ-3591-A
The one for 4WD box is D2HZ-3591-D
There are quite a few of these seals still available. Here are a couple that look to be relatively close to you:
For the C7OZ seal
Soeby Motors, Walhalla, ND has 4 (701) 549-3711
Wolf Ford, Lidgerwood, ND has 3 (701) 538-7337
Green Sales, Cincinnati, OH has 183 (800) 543-4959
For the D2HZ seal
Soeby Motors has 2
Ranchland Ford, Broken Bow, NE has 1 (308) 872-6488
Green Sales has 26
If you want more sources , let me know.
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
Likes: 785
From: Simi Valley, CA
D7AZ-3E501-A .. Sector Shaft Seal Kit
Last dealer cost $28.02 List $46.70
So try the dealership OR ……
Parts International, Farmers Branch, TX has 0.
Out of business, parts sold to Bob "snake" Allen Ford.
Green Sales, Cincinnati, OH has 29 =800-543-4959.
Manderbach Ford, Temple, PA has 5 = 610-929-3683.
Freese Motor Inc., Monticello, IA has 4 = 319-465-3541.
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