SPQ13 Hydraulics Final Miles

Is it possible to complete this testing with the 50GPM flow meter we used on the winch and windlass?

            No. As I scanned the three different tests in their detailed form, I found that the max GPM measured is 25 but the max pressure for the flow meter is 3000 psi and the highest psi tested is 5000. 

We tested the pilot pressure relief valve at operating temperature and found it to be working properly at about 443 psi.

 

Below is a video of me recording the boom swing cycle time. The Bobcat manual called for 7.2 second cycle time to swing right and a 7.0 second cycle time to swing left (at full throttle). I recorded 7 seconds both ways so I concluded it is working properly.



A group of us, lifted one side of the Bobcat with the boom and marked the track with a piece of red tape to count the number of revolutions it makes in 60 seconds. We counted about 18.25 revolutions in high gear. The Bobcat manual states the top speed of high gear is 2.9 MPH or 3,062.4 inches per minute (I have work to show upon request for all math done). We measured the track length and found it to be 173 inches long. So, if the track turned 18.25 revolutions in one minute, it traveled 3,157.25 inches or 2.99 mph. I would assume the very sight increase of speed from the service manual specification to our test can be credited to the track being in the air therefore a lack of load resulting in a higher speed. Overall, the track speed appears to be in specification.


On a new hydraulic pump startup, the pump must have all air purged from it. Simply loosen the case plug until all air is purged from the pump housing and then re torque.