Re: Stus-List Yanmar tach issue
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 issue 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. 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 C LF39253-208-1412Port Orchard YC wa.___Thanks everyone for supporting this list with your contributions. Each and every one is greatly appreciated. If you want to support the list - use PayPal to send contribution -- https://www.paypal.me/stumurray___ Thanks everyone for supporting this list with your contributions. Each and every one is greatly appreciated. If you want to support the list - use PayPal to send contribution -- https://www.paypal.me/stumurray
Re: Stus-List Yanmar tach issue
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 the ground was oxidized. Cleaned that up, returned the tach, (thankfully) it’s been good since. Basics first. Good luck. Dave. 33-2 Sent from my iPad > On Oct 31, 2019, at 5:53 PM, sv Rebecca Leah wrote: > > 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 > C LF39 > 253-208-1412 > Port Orchard YC wa. ___ Thanks everyone for supporting this list with your contributions. Each and every one is greatly appreciated. If you want to support the list - use PayPal to send contribution -- https://www.paypal.me/stumurray
Re: Stus-List Yanmar tach issue
Thanks for the help. Found a bad connector. Old tach works like a champ. Now not to next project, new windlass. Doug Mountjoy Sv Rebecca Leah C LF39253-208-1412Port Orchard YC wa. Original message From: Joel Aronson via CnC-List Date: 10/31/19 15:17 (GMT-08:00) To: cnc-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 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 power.Josh MuckleyS/V Sea Hawk 1989 C 37+Solomons, MD On Thu, Oct 31, 2019, 5:53 PM 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. 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 C LF39253-208-1412Port Orchard YC wa.___ Thanks everyone for supporting this list with your contributions. Each and every one is greatly appreciated. If you want to support the list - use PayPal to send contribution -- https://www.paypal.me/stumurray ___ Thanks everyone for supporting this list with your contributions. Each and every one is greatly appreciated. If you want to support the list - use PayPal to send contribution -- https://www.paypal.me/stumurray -- Joel 301 541 8551 ___ Thanks everyone for supporting this list with your contributions. Each and every one is greatly appreciated. If you want to support the list - use PayPal to send contribution -- https://www.paypal.me/stumurray
Re: Stus-List Yanmar tach issue
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. > 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 > C LF39 > 253-208-1412 > Port Orchard YC wa. > ___ > > Thanks everyone for supporting this list with your contributions. Each and > every one is greatly appreciated. If you want to support the list - use > PayPal to send contribution -- https://www.paypal.me/stumurray > ___ Thanks everyone for supporting this list with your contributions. Each and every one is greatly appreciated. If you want to support the list - use PayPal to send contribution -- https://www.paypal.me/stumurray
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 < 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 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 power. > > Josh Muckley > S/V Sea Hawk > 1989 C 37+ > Solomons, MD > > On Thu, Oct 31, 2019, 5:53 PM sv Rebecca Leah via CnC-List < > cnc-list@cnc-list.com> wrote: > >> 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 >> C LF39 >> 253-208-1412 >> Port Orchard YC wa. >> ___ >> >> Thanks everyone for supporting this list with your contributions. Each >> and every one is greatly appreciated. If you want to support the list - >> use PayPal to send contribution -- https://www.paypal.me/stumurray >> >> ___ > > Thanks everyone for supporting this list with your contributions. Each > and every one is greatly appreciated. If you want to support the list - > use PayPal to send contribution -- https://www.paypal.me/stumurray > > -- Joel 301 541 8551 ___ Thanks everyone for supporting this list with your contributions. Each and every one is greatly appreciated. If you want to support the list - use PayPal to send contribution -- https://www.paypal.me/stumurray
Re: Stus-List Yanmar tach issue
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 power. Josh Muckley S/V Sea Hawk 1989 C 37+ Solomons, MD On Thu, Oct 31, 2019, 5:53 PM sv Rebecca Leah via CnC-List < cnc-list@cnc-list.com> wrote: > 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 > C LF39 > 253-208-1412 > Port Orchard YC wa. > ___ > > Thanks everyone for supporting this list with your contributions. Each > and every one is greatly appreciated. If you want to support the list - > use PayPal to send contribution -- https://www.paypal.me/stumurray > > ___ Thanks everyone for supporting this list with your contributions. Each and every one is greatly appreciated. If you want to support the list - use PayPal to send contribution -- https://www.paypal.me/stumurray
Stus-List Yanmar tach issue
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 C LF39253-208-1412Port Orchard YC wa.___ Thanks everyone for supporting this list with your contributions. Each and every one is greatly appreciated. If you want to support the list - use PayPal to send contribution -- https://www.paypal.me/stumurray
