How to test auxiliary hydraulics and flow before plugging in attachments

Meadow

New member
Joined
Dec 5, 2025
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I’ve been in situations where I arrive at a new site, ready to plug in my attachments, but I can’t shake the worry about whether the aux hydraulics will work.
How do you go about testing the flow and pressure beforehand to prevent any surprises?
I’d really appreciate your quick checks and tips!
 
There was a time I spent an hour swapping hoses because I thought the attachment was faulty. Turns out it was just low aux pressure. Now, I always keep a gauge in the truck, warm up the system, bump the throttle, and check the flow. It’s a tiny habit that really cuts down on stress, especially when the mornings are chilly.
 
I once had a breaker stall just five minutes into a job, and it was a gut-wrencher.
It turned out low flow was the issue.
Now, I check the pressure, monitor the return temperature, and ensure the RPM matches the specs.
Just ten minutes at the start keeps my day and my peace of mind on track.
 
On my first job with a new attachment, I put too much faith in the machine and faced the consequences. These days, I warm it up, use a test kit to check aux pressure, cycle it in both directions, and feel for any weak flow. It’s become a little routine of mine before connecting anything pricey.
 
Once showed up, hooked up a mulcher, and all I got were some disappointing sounds. Now, I make sure to bring along a flow tester and a quick coupler gauge. By warming the oil, running the aux, and monitoring the pressure and GPM, I can do all my checks in five minutes. It’s way better than spending a whole day dealing with letdowns.
 
Learned my lesson the hard way when my auger was barely spinning, and everyone was watching. Now, I crack open the couplers, check for heat, put on a pressure gauge, and confirm the flow at mid throttle. It’s quick and easy, plus it saves me the embarrassment of looking unprepared.
 
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