I recently took my truck into an MHC Kenworth for some repairs, power steering issues among them. It kept locking up on me while doing a hard back to the point where I had to sit and wait a while before finishing the back. It had never run out of fluid despite fluid obviously leaking out of the cap all the time. So I brought it to the KW and they tood me there was a PSA out for this model, a 2015 KW T680, that said the reservoir for the power steering pump was in a bad location and needed to be moved. So i paid for that to get done bevause apparently that causes the fluid to get too hot. Less than a week later, driving through Des Moines, NM on US-87 the pump started whining. The wind was blowing hard and i had been fighting it for a couple hours. So I stopped at a rest area and discovered the reservoir to be nearly empty and what was left appeared to be boiling. Fluid was all over the top of the reservoir and dripping. I'm now thinking that the pump has gone to #### and is boiling the fluid out of the reservoir. Would anyone agree with that? Time to replace the pump?
Power Steering Pump
Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Roteck, Jun 13, 2018.
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Pump was likely damaged from first problem. Needs a new pump, but this issues of over heating and fluid loss may still be there and further troubleshooting needed. Could have a blockage somewhere making it constantly work and over heat. Should have a power steering analyser put on it to test flows and pressures.
Roteck and Justrucking2 Thank this. -
Check your lines, and if you have a power steering cooler, look at that too. Seems a bit premature to lose a pump like that, mine lasted a good 10 years on my ISX. Also check the power steering filter, it should be in the reservoir, maybe they botched that up at MHC. The last place on the planet I would take a truck.
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Heavyd Thanks this.
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PACCAR or ISX motor? Check the clamps?
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Fluid is puking out of the top eh? Is it to late to have them bring you a new power steering filter along with the fluid?
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