Need Over view of Dreaded ESA Function on 92 OMC 3.0

[Limited-Time]

First off the Sealoc manual is due in early next week. Anyway looks to me like the switch that controls the ESA module stays in the made (closed) position as long as the control handle is in gear. And it breaks (opens) when going into neutral, and stays open until the control is mover back into gear. That means the switch must trigger a timer in the ESA control box which is re-set when the switch makes (closes) again. Is this correct?????

 

[Boatin Bob]

Re: Need Over view of Dreaded ESA Function on 92 OMC 3.0

I don't have a 92 but as far as I know they didn't change much, the switch should only make when shifting in or out of gear (mostly out when there is more resistance to the shift). On the older versions there was an overstroke switch who's job was to open the circuit once in gear so the ESA was basically disabled. On the newer versions they did away with the switch and put a timer in the ESA itself (I think it goes maybe 5-7 secs) so once you go into gear the timer should cause the ESA to drop out but if that's happening you need to find out why the v shape notch piece is hanging up, the roller on the switch should be sitting in the middle of the notch before and after a shift, the switch should only make momentarily during the shift. You could have a sticky or maladjusted lower shift cable or ?

 

[Don S]

Re: Need Over view of Dreaded ESA Function on 92 OMC 3.0

Basically, the shift ESA system should only work coming out of gear, and only causes half the cylinders to misfire long enough for the drive to come out of gear, and the process only takes a second or less.<br />If it is engaging when going into gear, the cable or something is getting stiff causing the pressure for the arm to move.<br /><br />Here is even more info on the ESA and Cobra drives.<br /><br /> http://www.hastings.org/~stuart/cobra/index.html

 

[Limited-Time]

Re: Need Over view of Dreaded ESA Function on 92 OMC 3.0

Thanks Guys,<br />Would a stiff lower cable show up as increased force required in the shift handle?

 

[seahorse5]

Re: Need Over view of Dreaded ESA Function on 92 OMC 3.0

The switch should not stay engaged when shifted into gear. If it does, then you have "stiffness" in the outdrive shift cable, bell-crank assembly, or the verticle shift rod in the lower unit.<br /><br />Your '92 unit is completely different in the shift adjustment, interupter wiring and switch compared to the earlier Cobras. Yes, your interrupter module has a timer in it.

 

[Limited-Time]

Re: Need Over view of Dreaded ESA Function on 92 OMC 3.0

seahorse,<br />Thanks for the information. The actuator (bracket with the V shaped notch) that engages the switch has little or no movement. The fasteners holding the linkage together are all loose. The large V shaped torsion spring does not touch either of the stops. Looks as though some one disassembled the linkage to get access to the starter. I unhooked the out drive cable and moved it by hand, seems free and smooth through out the entire range. Are there instructions available on line describing how this assembly goes together and how it should function? Thanks again.

 

[olbuddyjack]

Re: Need Over view of Dreaded ESA Function on 92 OMC 3.0

Are there instructions available on line describing how this assembly goes together and how it should function?

Yes. Follow Don's link above. Its an excelent discription of the function of the system.

 

[Boatin Bob]

Re: Need Over view of Dreaded ESA Function on 92 OMC 3.0

Those instructions on Stuarts site are more for the late 80's Cobra's but that spring should be touching the stops, sounds like someone might have had it off and compressed it, that's basically what puts the v shaped notch back in the center. Too much tension and it won't move, too little and it doesn't return.

 

[seahorse5]

Re: Need Over view of Dreaded ESA Function on 92 OMC 3.0

Originally posted by seahorse:<br /> The switch should not stay engaged when shifted into gear. If it does, then you have "stiffness" in the outdrive shift cable, bell-crank assembly, or the verticle shift rod in the lower unit.<br /><br />Your '92 unit is completely different in the shift adjustment, interupter wiring and switch compared to the earlier Cobras.

I forgot to add that your shift system allows for adjustment of the "stroke" of the shift lever at the motor. If it is adjusted too far, then the excess "stroke' of the cable will push against the V notch and spring causing it to deflect and trigger the switch. If your outrive shift cable is "finger free" when shifting, then you may only have an adjustment problem.<br /><br />Get the proper service manual as I am not familiar with any on-line source that shows your '92 and later shifting style.<br /><br />Basically the adjustments consist of centering the boat's shift cable to have equal "throw" in both directions. Then the linkage lever is adjusted to allow the full shift stroke without binding the system and actuating the interupter switch in either gear.

 

[Limited-Time]

Re: Need Over view of Dreaded ESA Function on 92 OMC 3.0

I have printed off all the info from Don's link. It seems to focus more on the 80's model ESA's. I guess I'll use that for reference when I pull this apart and try to see what's been fubar'd by the previous hack.....or....a…parts replacer that wrenched on it.

 

[Limited-Time]

Re: Need Over view of Dreaded ESA Function on 92 OMC 3.0

Worked on the system this weekend......what a mess....bent actuator spring lever on the switch, seal pulled off of micro switch button, (no longer sealed) and god only knows what happened to the "V" spring that’s suppose to return the actuator to center. Am in the process of obtaining replacement parts. <br /><br />For testing purposes we rigged a manual momentary contact switch to the EAS module that allows it to be activated while shifting into neutral. We wanted to verify if it would shift correctly with the ESA module energizing. It shifts like a dream....every time. Can I take it that the lower shift cable is good to go? Or could it still be an issue? I have it on the list of parts we need JIC.