Volvo 280 Outdrive won't go down

[Nordic 26]

I have a 1993 Volvo Penta 280 with a Hydraulic Pump (beleived to be a 852500) The drive is in the up position and won't go down. I have checked the relay's (up an d down) both function properly. There is a "wheeer" in the motor when the dash swith is activated. The fluid appears to be full. I am hoping for ideas on what to do to correct the problem. All thoughts appreciated.

 

[Don S]

Re: Volvo 280 Outdrive won't go down

Volvo didn't use the 280 in 93, and I have no idea what pump is 852500.
From the sounds of it, your pump is running, but the drive isn't moving, so you know it's not electrical. If the motor is running, and up is ok, you probably have a bad valve in the hydraulic pump. You are probably due for a new pump.