Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 13-10-2019, 21:04   #1
Registered User
 
DevoDave's Avatar

Join Date: Nov 2009
Location: Australia, currently Airlie Beach
Boat: Seawind 1160
Posts: 82
3YM30 Tacho sender thread size?

I want to install a magnetic tachometer sender in the thread on the bell housing at the rear on the exhaust side of my 3YM30.

I don't want to use the tacho signal out of my Balmar Alternator/regulator combo as the signal disappears when batts are full.

Anyhoo, does anyone have data on the thread size? I have pulled the bolt and the thread looks to be 11/16 inch with my cheapo micrometer but I would expect the Japanese would have made it metric so I'm seeking confirmation.
__________________

DevoDave is offline   Reply With Quote
Old 14-10-2019, 00:44   #2
Certifiable Refitter/Senior Wannbe
 
Wotname's Avatar

Cruisers Forum Supporter

Join Date: Jan 2008
Location: South of 43 S, Australia
Boat: C.L.O.D.
Posts: 9,810
Re: 3YM30 Tacho sender thread size?

The QM, GM and 4JH series use an M18x1.5 thread (metric fine).
The Yanmar part number is 128170-91160 (ex 124070 - 91160), the VDO number used to be 340.804/007/007.

I certain it will be the same for 3YM30.
__________________

__________________
All men dream: but not equally. Those who dream by night in the dusty recesses of their minds wake in the day to find it was vanity: but the dreamers of the day are dangereous men, for they may act their dreams with open eyes, to make it possible. T.E. Lawrence
Wotname is offline   Reply With Quote
Old 14-10-2019, 04:47   #3
Senior Cruiser
 
GordMay's Avatar

Cruisers Forum Supporter

Join Date: Mar 2003
Location: Thunder Bay, Ontario - 48-29N x 89-20W
Boat: (Cruiser Living On Dirt)
Posts: 36,365
Images: 241
Re: 3YM30 Tacho sender thread size?

I suspect Wotname is correct, as usual.

Page 9-41 of this “4JH Series” Manual indicates “M-18 x P1.5"
http://sagaforumet.com/yanmar-manual...kapittel_9.pdf

The 3YM30 Shop Manual doesn’t indicate an MPU thread size, but the oil & water senders use the M-18 x P1.5 thread.
https://j109.org/docs/yanmar_3ym-2ym-service-manual.pdf
__________________
Gord May
"If you didn't have the time or money to do it right in the first place, when will you get the time/$ to fix it?"



GordMay is offline   Reply With Quote
Old 14-10-2019, 15:46   #4
Registered User
 
DevoDave's Avatar

Join Date: Nov 2009
Location: Australia, currently Airlie Beach
Boat: Seawind 1160
Posts: 82
Re: 3YM30 Tacho sender thread size?

Cheers guys. I've ordered an M18 x P1.5 and will report back when it arrives.
__________________
SV XTsea - Seawind 1160
http://www.xtsea.com.au
DevoDave is offline   Reply With Quote
Old 12-11-2019, 21:30   #5
Registered User
 
DevoDave's Avatar

Join Date: Nov 2009
Location: Australia, currently Airlie Beach
Boat: Seawind 1160
Posts: 82
Re: 3YM30 Tacho sender thread size?

I can confirm M18 x p1.5 is the thread size.

I just need to sculpt the signal now to feed my tacho and it's all good.
DevoDave is offline   Reply With Quote
Old 12-11-2019, 22:57   #6
Certifiable Refitter/Senior Wannbe
 
Wotname's Avatar

Cruisers Forum Supporter

Join Date: Jan 2008
Location: South of 43 S, Australia
Boat: C.L.O.D.
Posts: 9,810
Re: 3YM30 Tacho sender thread size?

^^
__________________

__________________
All men dream: but not equally. Those who dream by night in the dusty recesses of their minds wake in the day to find it was vanity: but the dreamers of the day are dangereous men, for they may act their dreams with open eyes, to make it possible. T.E. Lawrence
Wotname is offline   Reply With Quote
Reply

Tags
3ym30, size

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Yanmar 3YM30 where do I find the tacho sensor point? Nautilus2 Engines and Propulsion Systems 61 19-09-2019 07:16
Yanmar Tacho 3YM30 RangerTug Electrical: Batteries, Generators & Solar 0 31-03-2014 22:17
Yanmar Tacho Query bony Marine Electronics 4 29-03-2012 17:25
Tacho only reading half revs? surfingminniwinni Engines and Propulsion Systems 8 21-12-2011 16:13
YANMAR TACHO (1GM) bill good Engines and Propulsion Systems 0 06-05-2009 18:39

Advertise Here


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 00:47.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
×

ShowCase vBulletin Plugins by Drive Thru Online, Inc.