Re: 660D Hydraulic system failure

Posted by Joe Evans on May 25, 2005 at 05:44:30 from (67.129.216.190):

In Reply to: 660D Hydraulic system failure posted by Justin Imhof on May 24, 2005 at 20:41:28:

The 660's hydraulic and power steering pumps get their oil supply from a common suction pipe. The pipe feeds into the hydraulic pump; porting in the hydraulic pump serves as a feed for the piggy-backed PS pump.

Their are two sealing rings on the suction pipe. One is actually an O-ring resting in the hydraulic pump, and the other is a flat ring much like a garden hose washer which serves to seal the port where the suction pipe plugs into the TA housing. If these sealing rings aren't doing their job, the pumps(s) will suck wind (literally).

Also common to both pumps is the drive and driven gear, filter and oil level. There was a post on RED POWER recently where a guy had the drive gear which spurs onto the pump driven gear fail so it can happen..

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