yanmar ym2620d no hyd functions or power steering

terrysk1973 · Aug 9, 2017

HEY GUY,S NEED HELP I HAVE A 1986 YANMAR YM2620D AND THE 3PT WANT
COME UP AND THE FEL AND POWER STEERING DOESNT WORK ALSO.I CLEANED
OUT THE SCREEN IN TRANS AND REPLACED JD303 TYPE FLUID.I RUN THE TRACTOR
AND NO POSITIVE RESULTS.THEN I PULLED THE PUMP OFF THE FRONT OF THE
ENGINE AND CHECKED FOR A SHEARED KEY AND OF COURSE NO SHEARED KEY.
THEN I ASSUMED IT WAS THE PUMP.SO I PURCHASED A NEW PUMP AND IT
LIFTED THE BUSHHOG UP 1 TIME AND STILL NO FUNCTIONS AFTERWARDS.IM
AT MY WITTS END CAN SOMEBODY PLEASE HELP ME WITH THIS MATTER.DO
YA THINK IT MAY BE ON AIR AND I NEED TO TRY PUTTING LITTLE BIT
OF AIR PRESSURE IN THE TRANS TO HELP PUSH FLUID TO PUMP.I DONT
KNOW WHAT ELSE TO CHECK PLEASE HELP ?

terrysk1973 · Aug 10, 2017

]HEY GUY,S NEED HELP I HAVE A 1986 YANMAR YM2620D AND THE 3PT WANT
COME UP AND THE FEL AND POWER STEERING DOESNT WORK ALSO.I CLEANED
OUT THE SCREEN IN TRANS AND REPLACED JD303 TYPE FLUID.I RUN THE TRACTOR
AND NO POSITIVE RESULTS.THEN I PULLED THE PUMP OFF THE FRONT OF THE
ENGINE AND CHECKED FOR A SHEARED KEY AND OF COURSE NO SHEARED KEY.
THEN I ASSUMED IT WAS THE PUMP.SO I PURCHASED A NEW PUMP AND IT
LIFTED THE BUSHHOG UP 1 TIME AND STILL NO FUNCTIONS AFTERWARDS.IM
AT MY WITTS END CAN SOMEBODY PLEASE HELP ME WITH THIS MATTER.DO
YA THINK IT MAY BE ON AIR AND I NEED TO TRY PUTTING LITTLE BIT
OF AIR PRESSURE IN THE TRANS TO HELP PUSH FLUID TO PUMP.I DONT
KNOW WHAT ELSE TO CHECK PLEASE HELP

Spanner · Aug 17, 2017

From your "Introduction" thread posting the following is noted:

terrysk1973 said:
HAS ANYBODY HAD A CHANCE TO READ MY FIRST POST ON THE HYD ISSUE IM HAVEING WITH MY YANMAR YM2620D.IF SO I HAVE A UPDATE AND I THINK IT MAY BE IN MY SUCTION LINE COMEIING OFF THE TRANS ,THEIR IS A RUBBER HOSE WITH CLAMPS WERE THE TUBE JOINS AND IT HAS DRY ROT CRACKS WITH A VERY LITTLE WET LOOK TO IT AND I WAS TOLD IT DONT TAKE MUCH OF THEIR TO BE PRESSURE LOSS ON THAT SUCTION PIPE.SO I WRAPPED DUCT TAPE REAL TIGHT AROUND THE HOSE JUST TO SEE IF THAT WAS EHAT IT WAS AND NOW SINCE I DONE THAT IT WILL PICKUP THE BUCKET AND BUSHHOG MOMINTARILY THEN LOOSES FUCTTION AGAIN SO I THINK I MAY BE LOOSEING PRIME THEIR.I HAVE ORDEREED A NEW HOSE AND GOING TO REPLACE ORINGS ON BOTH ENDS AND HOPEFULLY THAT WILL FIX IT.WILL UPDATE SOON AS I CAN

As I said there, try posting in Non-Capital letters. (Lower case) It's easier to read like this.

The hydraulic system should be air-free so your perished rubber coupling could be a source of air-leak inwards, yes. Especially likely since you say it's weeping oil out.

Let us know how you get on with the new coupling fitted.

That you have cleaned the suction filter screen is a good start.