Vacuum Pump

297,XXX miles and the vacuum pump has stopped functioning. Go figure. I began investigating the vacuum pump when the breaks became manual and the engine wouldn't stop without using the emergency stop lever.

I verified the master would hold vacuum (lots of pumping with the hand pump) and that the hard lines passing through the firewall which weren't golf T'd off :-/ would also hold vacuum.



I could not however maintain vacuum on the hard line at the pump. (I think this is accurate. I'm writing this months after taking the photos and completing the job)

Pump disassembled (above)
Old seals and check valves (below)

(Above) Cam which the pump's bearing rides on. In the picture there appears to be wear but it was smooth as glass.  

Disassembled pump. (Above)

This is the wall of the cylinder which the pump's piston operates in. Again, the surface was smooth as glass and shined like a mirror. 297,XXX miles.....







Pump reassembly with new check valves and gaskets.

Put the one way check valves back in facing the correct way.




Complete. Ignore my hanging A/C compressor.