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96 MERCURY 150 POWER TRIM NO REVERSE LOCK

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randy_hester

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WHILE IDLING THRU SHALLOW WATE

WHILE IDLING THRU SHALLOW WATER I HIT A SUBMRGED OBJECT. IT DID NOT HIT HARD.PROPS ARE FINE. NO DAMAGE AT ALL.CONTINUED TO FISHING GROUND WHERE PROBLEM APPEARED. WHEN ENGINE IS PLACED IN REVERSE AND ACCELERATED IT LIFTS OUT OF WATER AS IF THE REVERSE LOCK IS BROKEN WHICH IT DOES NOT HAVE.UPON INSPECTION OF FLUID LEVEL IT WAS EXTREMELY OVERFULL.TRIM STILL WORKS WITH FLUID LEVEL AT WHAT IS NOW FULL AFTER IT DRAINED DOWN.ENGINE STILL RAISES IN REVERSE.TECH MANUEL SHOWS A HYDRALIC BREAKAWAY.HOW DO I FIX THIS PROBLEM? I CAN GRAB BOTTOM OF ENGINE AND PULL IT UP.THE OTHER ENGINE DOES NOT DO THIS.PLEASE HELP-AGGRAVATED TO NO END.
 
Check the manual release valve

Check the manual release valve (see hole in transom bracket and plastic screw)to see if it is broken or loose.
 
SCREW APPEAR TO BE FINE &

SCREW APPEAR TO BE FINE & NOT LOOSE.TRIM RAISES & LOWERS UNIT BUT IS SLOWER THAN BEFORE & MOTOR RAISE COMPLETELY OUT OF WATER WHEN BACKING UP.
COULD THERE BE A AIR LOCK IN CYLINDER. IS THERE A BLEED PROCEDURE? I'M THINKING THAN THE IMPACT POPPED THE BREAKAWAY VALVE WHICH FORCED THE EXTRA FLUID IN THE RESERVE AND DREW IN THE AIR THAT WAS ON TOP OF FLUID . I'VE TRIED RUNNING BOAT ONTO PLANE WHILE OPERATING TRIM BUT JUST CANNOT GET IT TO WORK CORRECTLY.WHEN YOU LIFT ON LOWER UNIT IT IS SPONGY LIKE AIR BEING COMPRESSED.
 
"Nate, Those PTT units are se

"Nate, Those PTT units are self bleeding. Raise the motor, remove the fill plug and fill it with auto trans fluid. Now replace the plug and run it up and down a few times and then refill. If you have bubbles in the fluid, wait 10 min for them to bubble out, and then refill the PTT unit."
 
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