Bobcat 732 charge pressure

[spitzair]

Hello Everyone,
My dad’s Bobcat 732 has recently started having the hydraulic warning light come on about 30 or so seconds after starting the machine. We want to check and make sure it’s not actually losing charge pressure but I can’t find what it’s supposed to be in the manuals, or is it the same as the hydraulic system pressure since it’s from the same pump? The machine operates normally so we’re hoping it’s just the pressure switch acting up... He has ordered the 40 micron bronze filter since that has never been changed for as long as we’ve had the machine, hopefully that helps too...

 

[Vetech63]

Charge pressures on most equipment averages somewhere between 300-400 psi.

 

[Bswwood]

The 732 charge pressure relief should be 85 to 115 PSI depending on pump, vane or gear. the charge pressure switch is set to go off at 40 PSI and below. If you don't have a charge test port you can remove the charge pressure switch in plumb your gauge into that port

 

[spitzair]

Awesome, thanks guys. My dad is going to scare up a gauge and put it where the pressure switch goes and then we'll see what it is., and I'll report back what he finds.

 

[spitzair]

Ok so my dad reports 102 PSI at idle and 150 PSI at full RPM with the oil cold... I assume most likely the switch has gone south, he has a new one on the way...