The hydraulic ram on the front of the plow truck (a 2020 International HV) won't lower - and it's the only hydraulic on the entire valve assembly that isn't working.
It's not a problem with the electronic controls, I've tested those and put a wrench on the manual control, and the "Raise" part of the double-action valve works (it's hydraulic raise, gravity lower). It's already raised all the way, but I can hear it working and the pressure jumps on the gauge.
Any suggestions to this non-mechanic?
Here's a picture of the hydraulics on the hoist, and the valve assembly, with the raise/lower for the front plow highlighted:
Front hoist for snowplow won't lower.
Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by kmmontandon, Jun 6, 2025.
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Manuals
Check with Henderson about a service manual. They don't say on the website if the manuals are parts or service or both. Parts manual diagrams can give a lot of good info.
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