Hanson Hydraulics Ltd. Blog

Want a good seal for your PVG32 actuator?

Hanson Hydraulics Ltd. Blog article:

PVG32 Actuator PVMD

Sauer Danfoss PVG32 PVMD actuators (used on Waratah Processors), have a u-cup sealing the actuator shaft to the housing. It has been my experience that this seal is not included in the PVM seal kit. Waratah has created a seal kit, however it has also been my experience that it contains the wrong u-cup. The u-cup required is a metric size. – 11mm x 17mm x 3mm which is hard to find. The u-cup supplied in Waratah seal kits I have found is 11/16 x 7/16 x 1/8, close but not close enough. They will start leaking in short time. Continue reading…

Shimadzu gear pump failure: on a Caterpillar dozer. Here are some pictures of a recent gear pump failure. It is a Shimadzu gear pump from a D5C cat. It is the implement pump. This particular Cat has a core drill mounted to the back of it which is supplied oil from the ripper control valve. 

Hanson Hydraulics Ltd. Blog article:

Before dissmantling

The main implement control valve has a pilot operated main relief as well as a direct acting work port relief for the ripper down port.  Oil from the ripper down port feeds the control valve that operates the functions of the core drill. This control valve also has a direct acting relief.

Continue reading…

Welcome to Hanson Hydraulics Ltd. Blog. This blog was formerly located at hansonhydraulics.blogspot.com . We have recently rebuilt our web page and decided to host our own blog as well as our own Forum which can be found at hansonhydraulics.com/phpBB3 .

Please feel free to sign and up and follow along, or join a discussion on the Forum page.  The next posting will be one of a gear pump failure; a Shimadzu SGP1 gear pump.