Steering stiff

Tiny
KC5AEA
  • MEMBER
  • 2005 ISUZU NPR
  • 300,000 MILES
Replaced the steering gearbox. Refilled power steering reservoir and "burped" it. Steering was very stiff for first few minutes of test drive but loosened up and was fine for rest of 10hr night. Truck is a street sweeper. Next day, could not hardly turn steering wheel and only slightly better after a few minutes of driving. Replaced PS pump about 4 months ago. Have heard there is an adjustment on PS gearbox. What is it and how? Yes it was p/s fluid. I don't see anything on the gearbox that looks like it could be used to make adjustments. I guess biggest question is why it was fine for a 10 hr work night sweeping parking lots, with all the sharp turns and such and then next day you can't turn the wheel while sitting still and takes both hands (Armstrong steering) while moving.

It's possible but can't see the pump failing in such a short time.
Thanks for your time. Thanks!
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Sunday, June 23rd, 2013 AT 10:16 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,468 POSTS
Hello,

Yes it does sounds like the new pump has failed and needs to be replaced again. Try to get a high quality rebuild so it will last. The system does not need any adjustment or to be burped.

Please let us know what you find.

Cheers, Ken
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Friday, May 26th, 2017 AT 9:56 PM

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