GENIE S45 HYDRAULICS FADE WHEN HOT

[ScottP]

HELLO GUYS
IVE GOT AN ISSUE WITH MY GENIE MANLIFTS LOSING HYDAULIC SPEED WHEN THEY HEAT UP..WHY ARE THE HEATING UP ALL THE SUDDEN? IVE CLEANED ENGINE OIL COOLER JUST FOR ARGUEMNT SAKE I GUESS..HYD FLUID LEVEL IS UP TO SPEC.. AMBIENT TEMPS ARE NORMAL FOR SOUTH MISSISSIPPI SUMMERS..DOES NOT HAVE HYDRAULIC COOLERS..IT LOSES BOTH FUNCTION AND TRAVEL SPEED ALTHOUGH TRAVEL SEEMS TO BE MOREFREQUENT THAN FUNCTION..ANY HELP OR SUGGESTIONS ARE WELCOME AND WOULD BE APPRECIATED..THNKS IN ADVANCE

 

[ScottP]

STILL BATTLING THIS ISSUE IF ANYONE CAN HELP..THANKS IN ADVANCE

HELLO GUYS
IVE GOT AN ISSUE WITH MY GENIE MANLIFTS LOSING HYDAULIC SPEED WHEN THEY HEAT UP..WHY ARE THE HEATING UP ALL THE SUDDEN? IVE CLEANED ENGINE OIL COOLER JUST FOR ARGUMENT SAKE I GUESS (KNOWING THIS HAS NOTHING TO DO WITH HYDRAULIC FLUID TEMP EXCLUDING THE ENGINE TEMP EFFECT ON HYDRAULIC COMPONENT AMBIENT TEMPS) ..HYD FLUID LEVEL IS UP TO SPEC.. AMBIENT TEMPS ARE NORMAL FOR SOUTH MISSISSIPPI SUMMERS..DOES NOT HAVE HYDRAULIC COOLERS..IT LOSES TRAVEL SPEED IN BOTH DIRECTIONS AND COUPLE MACHINES DONT HAVE TO HEAT UP FOR ANY AMOUNT OF TIME HARDLY..BEFORE I CAN GET THEM FROM SHOP BAY TO LOWBOY THEY LOST ENOUGH PRESSURE TO NOT EVEN CLIMB THE RAMP TO LOWBOY DECK..I FEEL LIKE ITS HOT OIL SHUTTLE VALVE ISSUE OR MY CHARGE PRESSURE/DRIVE PUMP PRESSURE DIFFERENCE IS OFF BUT AFTER RE-ADJUSTING SEVERAL TIMES ON DIFFERENT MACHINES NO LUCK WITH CORRECTING THE ISSUE..ANY HELP OR SUGGESTIONS ARE WELCOME AND WOULD BE APPRECIATED.

 

[Delmer]

How about some back ground on the problem? Is this one machine or more than one manlift? All Genie S45? How long have you had them and how long have they had the problems?