Recent content by Vern 632

I replaced the vane pump and have run the machine with the clear plastic line going from the port block temp. senser opening to the tank as instructed by Bob Cat tand put machine up an blocks so that I can run the wheels forward and back at top speed per Bob cat they asid to run it that way for...

In taking to hose off the port block the cold weather bypass valve fell out and I can not find it I have the spring bt not the valve any one have a picture of what it looks like??

So far the olny pressure test I have been able to do is the charge pressure test it is 80psi with the sysem just starting up oil silll cool but as soon as I put the machine under load trying to go up a small hill the pressure drops to any where between 20 and 0 psi at this time the machine is...

Thyanks I will try that also I am checking for air leaks in the incomming lines and port block which may cause the cavation

In checking pressures the repair manuel is not clear on where and how to check the pressure going to the drive motors, it shows how to check the charge pressure and the hydrolic pump pressure at the aux. port. it shows that the pressure switch on the port block is rated at 23-27 psi. and that...

Thank you for the info I will be checking pump pressures

I have a Bob Cat 632 built in about 1982 when I first got it the previous owner used any hydrolic fluid that he could find, have have since changed to 10w40 motor oil that the book called for. in the past several years I have been having more and more trouble with hydrolic system over heating...