420 DA Thread

[brewster16]

Our J pump has four 2 inch duckbill valves. They are sold in pairs for a stupid price. See my post #2655

 

[Blueone]

What size duckbills are needed, might as well change those also ?

Mine are 1-1/2” so better check your parts manual or measure

 

[brewster16]

What size duckbills are needed, might as well change those also ?

Im sure Blueone knows what he needed for his boat. There may be a lot of variation form model to model and year to year. If I were you I'd go look at the label down on your pump cover. There you will find the exact specs and model numbers for the parts (including duckbill valves) you will need to do the job. My 2007 44DA took four 2 inch duckbills

 

[J.Wilt]

Mine are 1-1/2” so better check your parts manual or measure
View attachment 106735

The duckbills were 1 1/2”, very easy to replace all 4 for master head pump. There ended up being a blockage in the line, took 6 hours to get it freed up !
Someone flushed a ziplock baggy full of what looked like puke.
Guest, ya gotta love them.

 

[310sundancer]

 

[310sundancer]

Pick this baby up yesterday, spent all day today cleaning, replacing all the batteries, and the walker airseps,

 

[Jaybeaux]

Be nice to her, and she'll be nice to you. Fire away with any questions. Lots of info on this thread. You got a GREAT boat. Many say the best platform Sea Ray ever produced.

Jaybeaux

 

[Blueone]

Be nice to her, and she'll be nice to you. Fire away with any questions. Lots of info on this thread. You got a GREAT boat. Many say the best platform Sea Ray ever produced.
Jaybeaux

Yes many say that except for those 48 Sundancer owners.... they start stuttering when asked if the 420 is the best boat ever

 

[Lovichka 420 DA]

Replace starboard batteries two weeks ago, port batteries seemed fine. Couple of days later, fired up both engines, but the voltmeter for port is bouncing between 8 and 14 volts. Up and down, repeat. Added some revs, helped. After 10 - 15 minutes on the water all was normal.

Any suggestions?

 

[Blueone]

I replaced a bad impeller in Genny today....it was replaced last fall and literally was gone. This is the first time I removed the whole pump to change impeller.... by far the best way to do that nightmare Gen
Also lost shower sump this morning and it over flowed of course..... if you are keeping track I am two weekends away from completely rebuilding my boat this year.
Spent the morning in west marine.... it was raining so every guy with a boat was in there. I did the Amazon price match thing and it saved money big time.... I bought two impellers...west marine wanted $60 each...Amazon $25. The sump pump was $125, Amazon was $100. Pissed off people in line but it saved me $85.

 

[ASH]

Replace starboard batteries two weeks ago, port batteries seemed fine. Couple of days later, fired up both engines, but the voltmeter for port is bouncing between 8 and 14 volts. Up and down, repeat. Added some revs, helped. After 10 - 15 minutes on the water all was normal.

Any suggestions?

Diesels?


That is normal. There are heaters that cycle on/ off until operating temp is reached. You likely never noticed before. Both sides will do it regardless of battery age.

 

[Lovichka 420 DA]

Diesels?


That is normal. There are heaters that cycle on/ off until operating temp is reached. You likely never noticed before. Both sides will do it regardless of battery age.

Fully understood. Well aware of how that appears. Perfectly normal until now. Difference is, the voltmeter for the starboard moves as usual from 10 to 14 due to the heaters. The needle on the port voltmeter and on the panel in the salon swings from 8 to 16, the entire range......and after 15 minutes, it fine. A head scratcher for me.

Oh a the first time, the Smartcraft panel was screaming a fault until the meter settled downbut today, the 2nd time out, it didn't.

 

[ttmott]

Fully understood. Well aware of how that appears. Perfectly normal until now. Difference is, the voltmeter for the starboard moves as usual from 10 to 14 due to the heaters. The needle on the port voltmeter and on the panel in the salon swings from 8 to 16, the entire range......and after 15 minutes, it fine. A head scratcher for me.

Oh a the first time, the Smartcraft panel was screaming a fault until the meter settled downbut today, the 2nd time out, it didn't.

New batteries or old batteries. A tired or abused battery will sag lower in voltage under load. Suggest to have them load tested....

 

[swaterhouse]

Fully understood. Well aware of how that appears. Perfectly normal until now. Difference is, the voltmeter for the starboard moves as usual from 10 to 14 due to the heaters. The needle on the port voltmeter and on the panel in the salon swings from 8 to 16, the entire range......and after 15 minutes, it fine. A head scratcher for me.

Oh a the first time, the Smartcraft panel was screaming a fault until the meter settled downbut today, the 2nd time out, it didn't.

If your batteries were super weak before they were changed the alternator may be damaged. Weak batteries are tough on alternators.

 

[Lovichka 420 DA]

If your batteries were super weak before they were changed the alternator may be damaged. Weak batteries are tough on alternators.

Great suggestion. Before I reach for my wallet, is there a simple way to test the alternator?

 

[swaterhouse]

Great suggestion. Before I reach for my wallet, is there a simple way to test the alternator?

I think they can be tested, not sure how though.

One of the alternators I got as a replacement after replacing weak batteries was an aftermarket unit, it would not kick on until the rpm was above 1000, then would stay on though even at idle.

 

[JAM420SD]

I have the Kohler 10EG Generator (GM motor), looking for a part number for the impeller, I found the 10E (ford motor) but not sure if it's the same. Thanks for any help you can provide. JAM

 

[JAM420SD]

I have the Kohler 10EG Generator (GM motor), looking for a part number for the impeller, I found the 10E (ford motor) but not sure if it's the same. Thanks for any help you can provide. JAM

 

[JAM420SD]

ok we know it’s the low coolant code, but I have no idea how to add the coolant. The only spot I see is the main cap and I’m sure that can’t be right, unless it can purge itself. Anyone have experience with this particular generator, sorry about the new guy issue here.

 

[Lovichka 420 DA]

If your batteries were super weak before they were changed the alternator may be damaged. Weak batteries are tough on alternators.

Bought two more new AGM batteries, hoping that solves the problem. Thx for all the advice and suggestions.