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Prestolite HYA 5111 tilt
I have a Prestolite HYA 5111 tilt on a 1987 Johnson 40 hp motor. It raises and lowers the motor fine but does not hold it up for long. I replaced the 2
O-rings and put in new fluid but it still doesn't hold. It drops down half way in the first minute and then drops the other half in the next 10 minutes. There is no foam in the fluid. I have raised it up and down with the plug out to release any trapped air and topped off the fluid each time. No change. However, the fluid I took out was red like transmission fluid and I replaced it with Johnson tilt/trim fluid. Could it be this old unit needs a thicker fluid? Any suggestions would be appreciated.
Thank you
O-rings and put in new fluid but it still doesn't hold. It drops down half way in the first minute and then drops the other half in the next 10 minutes. There is no foam in the fluid. I have raised it up and down with the plug out to release any trapped air and topped off the fluid each time. No change. However, the fluid I took out was red like transmission fluid and I replaced it with Johnson tilt/trim fluid. Could it be this old unit needs a thicker fluid? Any suggestions would be appreciated.
Thank you
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