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Old 01-22-2018, 07:51 PM   #21
dingy's Avatar
City: Bellingham
Vessel Name: Invictus
Vessel Model: 1977 Puget Trawler
Join Date: Jun 2012
Posts: 13
Just an update on that Velvet Drive problem. We removed the transmission and it was the drive plate. There is a smaller center plate with the grooves that go over the transmission spline which is riveted on the large plate having the springs. all the rivets were sheared off. Except for the rivets, everything else looked in good shape.
Long story short, the transmission was brought to a shop and everything checked out. With the new plate and the service at the shop the bill was under $500. Put things back together (being very careful not to force the last 1/4" by sucking it in with the bolts) and everything works great. Thanks for all the help, you guys were spot on on the diagnosis.

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Old 12-14-2018, 06:08 AM   #22
City: Pompano Beach
Join Date: Jun 2014
Posts: 23
velvet drive

Interesting thread...If a pressure gauge is installed, what is acceptable pressure for a transmission that is operating properly?
What does HP mean?
What dfoes low pressure mean?


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Old 12-14-2018, 12:25 PM   #23
City: Boston
Vessel Name: Adelante
Vessel Model: IG 30
Join Date: Nov 2016
Posts: 1,206
Service manual gives detailed specs.
Ex: at 600 rpm in neutral - 117-130 psi.

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