Steering box sector cap cracking
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Trailering
Joined: Oct 2022
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Steering box sector cap cracking
My 97 f350 reg cab keeps breaking the steering box sector cap when making a right turn. It's driving me nuts as it makes no sense, i bought the truck used with 103K miles and put about 500 miles on it with no problem even plowed snow with no issues. after plowing it sat for a while then one day my son went to use it and power steering fluid poured out it. after diagnosing it was the box I ordered a re-manufactured one from Ford swamped it out along with new high and low pressure lines. I put maybe 100 miles on it then had a brake line rot out, so it sat for months.
Fixed the brake lines was driving it around the farm made a hard right turn heard a loud pow fluid everywhere, this time I noticed the sector cap was cracked clean in half, i assumed i had gotten a bad one and fortunately it was still under warranty. While waiting for the replacement to come in I became impatient & took the box off a 89 f350 parts truck I had installed it and it worked fine, when the new replacement came in I decided to put it on the shelf. Today made a rolling right turn and pow! fluid all over and broken sector cap again. I never confirmed if the 1st box had cracked the sector cap because it was so grungy I probably didn't notice, but now I would have to think it had also cracked the cap.
any information would be appreciated .
Fixed the brake lines was driving it around the farm made a hard right turn heard a loud pow fluid everywhere, this time I noticed the sector cap was cracked clean in half, i assumed i had gotten a bad one and fortunately it was still under warranty. While waiting for the replacement to come in I became impatient & took the box off a 89 f350 parts truck I had installed it and it worked fine, when the new replacement came in I decided to put it on the shelf. Today made a rolling right turn and pow! fluid all over and broken sector cap again. I never confirmed if the 1st box had cracked the sector cap because it was so grungy I probably didn't notice, but now I would have to think it had also cracked the cap.
any information would be appreciated .
Logistics Pro
Joined: Sep 2007
Posts: 3,737
Likes: 179
From: Western Mass
That being said, thats an interesting failure, especially twice in a row. Have you checked your steering linkage?
I know the Dana 60 front axle had stops on the knuckles to limit how far the wheels could turn, maybe one is missing or out of adjustment, allowing the wheel and steering linkage to travel too far and that stresses the steering box?
I was also wondering if the power steering pump was pushing too much pressure, although I would think that would blow a seal instead of destroying the box.
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