U-89 Hydraulic Maritime Transmission can be couple for all engines between 100 HP(73,6 KW) to 250 HP(184 KW).
In U-89 transmission, you may use its forward command as "continuous reverse motion" and its reverse command as "continuous forward" . These do not cause any breakdowns in transmission mechanism. While you are choosing transmission mechanism, you have to know engine's power, reduction rate , the boats loaded weight and the engine's revolution average must be 2000 rpm/min. And also you have to pay attention to these details;
If U-89 is going to use for heavy duty boats, it must couple 150 HP (110,4 KW) ;
for medium duty boats, it must couple 200 HP (147,2 KW);
for light duty boats, it must couple 250 HP (184 KW) engine's.
1- Do not move transmission mechanism’s command lever forward or backward at least 3-5 seconds passes.
2- If command lever does not place correctly, the pressure gauge can show low pressure. Because of this transmission mechanism can ooze during working.
TECHNICAL SPECIFICATIONS :
Weight : 184 kgs
Reduction rates : 1,5/1 , 1,91/1 , 2,5/1 , 2,88/1
Hydraulic Working Pressure : 25 - 30 Atm.
Lubricating : 6 Lt.
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