I have read many posts on the ESA system and problems and
adjustments. Why does unplugging the ESA cause the outdrive cable
to lock up??? Is there a relay/solenoid that allows the cable to be shifted
or what??? Thank you, John
I have read many posts on the ESA system and problems and
adjustments. Why does unplugging the ESA cause the outdrive cable
to lock up??? Is there a relay/solenoid that allows the cable to be shifted
or what??? Thank you, John
Thanks, Bondo, but how does it relieve the gear pressure??? John
ps, I'm not trying to be a pain, I'm just trying to understand the system and
how it works.
Thanks, Bondo, but how does it relieve the gear pressure??? John
ps, I'm not trying to be a pain, I'm just trying to understand the system and
how it works.
The clutch dogs are kept engaged by the torque of the engine applied to the driveshaft. When the ESA works right, you shift to neutral and you can feel for a split second the engine idle drops from about 600 to about 450. Now the engine is producing less torque and that allows the clutch dogs to release under the pressure of the shift cable and linkage. The clutch dogs are undercut to keep them engaged under as much as 300 ft lbs of torque going though a comparatively small area. Compare the area of an automotive clutch disc and a clutch dog and you will see that the clutch dog is very small so for it transmit that much power and not slip it has to be under cut and that makes it hard to release unless the engine idle is dropped down way low.
As an aside, those with dog clutch shifting should keep their engines in good enough tune to idle smoothly between 500/600 rpm. That will help both shifting into and out of gear.
In the second vid, the 'cogs' you see on the clutch dog (between the rev and fwd gears) slides back and forth engages in the recesses machined in the inner face of the rev and fwd gears......
