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Old 01-21-2022, 08:04 PM   #1
Oil Gypsy
Veteran Member
City: Ladysmith
Vessel Name: Dauntless
Vessel Model: Grand Banks 36 Classic #248
Join Date: Sep 2019
Posts: 43
BW Velvet Drive Transmission


Ive been giving my engines a major service, started off removing the exhaust elbows to clean them out, ended up having to replace them. Ive now moved onto the engine and transmission oil coolers, as I don't have any history of the boat (estate sale) I decided to change all the hoses and coolers. While removing one of the transmission coolers the end cap fell off so I'm quite pleased with my decision.

The boat is equipped with two Ford Lehman 120's with BW Velvet Drive transmissions Model AS7-71C, both transmissions are the same but one appears to have been modified. From the manual the oil take off to the cooler is in the top, center of the transmission housing, the return is supposed to go to a plug on the bottom right side of the transmission housing.

On one transmission the hoses are rigged up as they should be but for some reason the return oil line on the other goes to hole cut and tapped into the top of the reduction gear housing, this completely bypasses the gearbox screen filter. I would like to know if anyone else has seen this modification and if so why it was made.

I would also like to know if there is an off the shelf rattle can that matches the Ford green on these engines.
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