I used a watertight connection. Had a bad crimp. DOH!Doug Mountjoy Sv Rebecca
Leah C LF39253-208-1412Port Orchard YC wa.
Original message From: Lee Youngblood via CnC-List
Date: 10/31/19 16:31 (GMT-08:00) To: CnC-List
Cc: Lee Youngblood
Subject: Re: Stus-List Yanmar tach
Make sure the ground is good by rigging a jumper to bypass the wiring harness.
If tach works then troubleshoot by cleaning ground stud and terminals at
engine. If that doesn’t work verify continuity through the ground wire.
I had exactly this issue, replaced the tach, then determined that
-list@cnc-list.com Cc: Joel Aronson Subject: Re:
Stus-List Yanmar tach issue Good chance there is a break in the wiring harness.
Joel On Thu, Oct 31, 2019 at 6:00 PM Josh Muckley via CnC-List
wrote:Hall effect switch at the flywheel sounds to be
working. You might use an o-scope to verify clean
So did you hide a inline fuse on the way to the engine panel, and use that wire
for the tach?
> On Oct 31, 2019, at 2:53 09PM, sv Rebecca Leah via CnC-List
> wrote:
>
> Does anyone know anything about Yanmar 4JHE tachs? Rewired my engine, now
> tach fails to work. Tried new tach no help.
>
Good chance there is a break in the wiring harness.
Joel
On Thu, Oct 31, 2019 at 6:00 PM Josh Muckley via CnC-List <
cnc-list@cnc-list.com> wrote:
> Hall effect switch at the flywheel sounds to be working. You might use an
> o-scope to verify clean and consistent square wave.
>
> Tach is a
Hall effect switch at the flywheel sounds to be working. You might use an
o-scope to verify clean and consistent square wave.
Tach is a pulse counter and integrator. It will need power (+12v and GND)
and a pulse. Verify pulse is making it there at the same amplitude as at
the flywheel. Verify
Does anyone know anything about Yanmar 4JHE tachs? Rewired my engine, now tach
fails to work. Tried new tach no help. Pickup off flywheel shows an ac voltage
that increases with rpm. Tacoma desiel had me check cleanliness of pickup. No
dirt. At a loss. I need help. Doug Mountjoy Sv Rebecca Leah
