Emergency Start Solenoid

[dtfeld]

Need a new Emergency Start Solenoid. Need a pretty close physical match at the wiring is tight and short. I bought an appropriately rated solenoid, but the size is much smaller, and the electrical connections the wrong size. I could probably make this work, but before I try to MacGyver this thing in, was hoping somebody had a lead on a more exact replacement. I'm coming up empty at the usual RV and truck places.

Need to be about 3" in diameter with side mounted 3/8 studs.

 

[Fill Ess]

Parts manual says 144881. Any part numbers on the existing one?

 

[hughespat57]

Because of the Cats that’s a very HD try looking at 1000A units

https://marinepartssource.com/solen...shEGPwDm0ON0j405dHW4G8fg0S5of2HBoC_icQAvD_BwE

here is the Cat part, 500A $95
https://www.dbelectrical.com/produc...=16581300415&adgroupid=140278232131&gclsrc=ds

 

[hughespat57]

https://www.texasindustrialelectric.com/pdf/1119866_relay.pdf

Dimensions sheet

 

[Lazy Daze]

This is the replacement (superceeded) for that part number through a Sea Ray dealer - about $70. New #1690833

 

[Mjresq4]

Need a new Emergency Start Solenoid. Need a pretty close physical match at the wiring is tight and short. I bought an appropriately rated solenoid, but the size is much smaller, and the electrical connections the wrong size. I could probably make this work, but before I try to MacGyver this thing in, was hoping somebody had a lead on a more exact replacement. I'm coming up empty at the usual RV and truck places.

Need to be about 3" in diameter with side mounted 3/8 studs.

View attachment 144077

Can they be rebuilt like a starter or an alternator?

 

[dtfeld]

I love the CSR hive mind!

I went with Patrick’s suggestion, 500A. Should be plenty, all 4/0;wire so I doubt I need the 1000A $100. The biggest issue was finding one with 3/8” studs.

I’ll report back, this comes up from time to time, with no resolution.

 

[Skybolt]

I love the CSR hive mind!

I went with Patrick’s suggestion, 500A. Should be plenty, all 4/0;wire so I doubt I need the 1000A $100. The biggest issue was finding one with 3/8” studs.

I’ll report back, this comes up from time to time, with no resolution.

I wouldn't be so sure about that. I would put the 1K Amp in. Those engines can really draw a lot if they are stubborn to start.

 

[dtfeld]

I’m pretty sure the original was 500A.

 

[hughespat57]

Fyi
Those a rated continuous duty
So the 500A used for jumping should be no sweat

 

[ttmott]

You'll be good with 500 amp rating. The locked rotor amperage on the QSM11 is 800 amps and cranking is 350 amps; the 3116/3126 has got to be much less.

 

[Skybolt]

You'll be good with 500 amp rating. The locked rotor amperage on the QSM11 is 800 amps and cranking is 350 amps; the 3116/3126 has got to be much less.

Dam you guys are spoiled. Detroit Diesel specifies a minimum Cold Cranking Amperage of 950 amps above 32*F, and below 32 is 1250 amps. That's a lot.

 

[dtfeld]

410 part manual shows the main battery solenoids as 200/1200, which I assume is continuous/intermittent, so I think 500 will work considering I've never needed to use it. Beside, 4/0 wire isn't rated at more than about 300A in a engine room.

I looked at the Mfg, looks to be made down in pensacola, but they only have a 1000A version. Hmmm.

 

[dtfeld]

If anybody goes looking for this solenoid, the 500A $95 version @hughespat57 posted above looks to be identical to the original.

Thanks!

Now to dig the old one out....

 

[dtfeld]

This is the replacement (superceeded) for that part number through a Sea Ray dealer - about $70. New #1690833

Just an FYI. There are a number of these relays that will handle the current, but are significantly smaller in physical size, and the studs are different sizes as well.

Given the very short lengths of 4/0 wire, having the exact relay made this a 10 minute job.

 

[Fun Size]

Just an FYI. There are a number of these relays that will handle the current, but are significantly smaller in physical size, and the studs are different sizes as well.

Given the very short lengths of 4/0 wire, having the exact relay made this a 10 minute job.

I found your post and am looking for the same solenoid. Did you get it from DB electrical?

 

[Njlarry]

Would also like to know a source.
Very educational post. Thanks to all.
Just to close the loop, what is the sop when the relay fails? Wait for the genny to charge the bad bank?

 

[dtfeld]

Yes the DB Electric version. Used Patricks source listed above. Links still valid.