Reply
 
Thread Tools Display Modes
 
Old 09-04-2016, 07:23 PM   #1
Senior Member
 
City: Paynters Bay
Country: Canada
Vessel Name: Therapi-Too
Vessel Model: 1987 Chris-Craft 381
Join Date: Nov 2012
Posts: 126
Tranny Issues

Greetings: I realize that the problem is connected to a gas engine, and not a trawler, but the problem is one we all could face.
A Velvet Drive 72C tranny was run for five hours and at the end of the run at RPM somewhere between low 2000 and 3500, the tranny locked in fwd, unable to shift. Has anyone had similar problems. Tranny had oil and functioned properly until idle down to dock and would not go to neutral. Bill.
__________________
Advertisement

Cyclone is offline   Reply With Quote
Old 09-04-2016, 08:09 PM   #2
Guru
 
Bruce B's Avatar
 
City: RI
Country: USA
Join Date: Jun 2014
Posts: 955
Is the shift cable still connected? If it is, the next question I'd ask is what happens when you engage reverse? Does the engine stall as though the transmission is locked?
Apparently, when the forward clutches begin to slip in these transmissions, the plates warp and jam the clutch. When the clutch jams, you loose neutral and when you engage reverse, it is essentially trying to go foreword and in reverse at the same time this the stall.
There are a number of discussions online about this symptom as it appears to be somewhat common. If the symptoms are forward in neutral, and forward and a stalled engine when you select reverse it is time to haul it out for inspection and repair.
Good luck,
Bruce
__________________

__________________
American Tug 395, hull number 12, being built!
Bruce B is offline   Reply With Quote
Old 09-05-2016, 12:31 AM   #3
Senior Member
 
Old deckhand's Avatar
 
City: Sitka
Country: Same
Vessel Model: Transpacific Marine Eagle 32
Join Date: Dec 2014
Posts: 443
Some VD use and electric shift motor and it can lock up. Does the transmission use an electric shift? If so, disconnect it from the shift lever on the transmission and try moving the shift lever by hand.
Old deckhand is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off





All times are GMT -5. The time now is 06:14 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2006 - 2012