Test for leaking cylindersgreenspun.com : LUSENET : Elevator Problem Discussion : One Thread
In your opinion, what is the best way to test for potential hydraulic leaks. Have recently tested by isolating jack and using bottle jack placed between piston and steel plate fastened to head using four bolts but have also also used test weights in the past . Do some major OEM's have specific policies? ALSO is it OK to simply take pressure up to relief setting? Is there any point in taking it beyond relief setting?
-- Jim Boxmeyer (email@example.com), May 02, 2001
Jim, what leak are you trying to locate. In the jack cylinder? In the piping? In the control valve? The methodology would be different in each case, as would the effect of increased pressure.
-- John Brannon (akaelevman@AOL.com), May 02, 2001.
FIRST INSTALL A CUT OFF VALVE IN PIT,PUT ELEVATOR AT TOP FLOOR WITH RATED LOAD IN THE CAR ,CUT OFF VALVE IN PIT . LET SIT FOR 5 MIN. THEN TAKE A MEASUREMENT FROM CEIL TO CEIL AND WRITE IT DOWN .COME BACK IN 24 HOURS RECHECK MEASUREMENT . IF IT LEAKS DOWN MORE THAN 3 INCHES AND YOU HAVE NO OIL AROUND PACKING YOU GOT A LEAK.
-- rg (firstname.lastname@example.org), May 03, 2001.