Official 400EC thread

Location of audible alarm for system monitor? Mines not working. Lights light but no noise. Please help. Thanks.
 
Nick Hahn said:
Got the new seal installed - removed the vent window actuator and tipped it up for better clearance - found out that the window will drop out the bottom of the hinge - a little surprised, but no damage done!
Cut the new pieces to length, mitered the corners - a sharp razor blade did a nice job - fit them into the channels. They fit tight. I was planning to put some silicone behind the gaskets as there was some old nasty behind the originals, but as tight as they fit I didn't think it was necessary. ( Hopefully I won't regret that. ) I did silicone/seal the mitered joint. New seal looks great! The hinge profile slid onto the window channel, I installed the window and it snapped into the frame channel. Have used it quite a few times and it has stayed in place!
Click to expand...
Where did you find the new material? How is your windshield rubber?
 
sws01 said:
/

You are correct about that location being the fill and vent. Owners Manual Chapter 3 says use hydraulic oil meeting Mil Spec H-5606A and fill to within 1/2" of filler hole.

On mine I don't think I can see down a half inch. Please post your results if you can. Good luck.
Click to expand...

Try this link for fluid (I've ordered a pint
Fun Hurts said:
New question re: steering. I've searched the forum and didn't see this addressed, so I apologize if it's a duplicate inquiry.

The steering seems to becoming increasingly stiff, both at idle and cruising, with an actual intermittent "creaking" when I turn the wheel. I'm assuming the small screw-cap on top and at the base of the (very short) steering column is for the addition of steering fluid. Could someone please confirm that for me?

Moving forward with my assumption, what kind of fluid do you use? How much? How do you know when it's full (or over-full)? Or have I completely missed the mark on this and I should be looking in a different direction?

As always, thanks for your input - T
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Regarding my previous response about the H-5605-A requirement, try this link for the hydraulic steering fluid:

https://www.aircraftspruce.com/catalog/stpages/hydfluid5606qt_09-27110.php

Good luck
 
Anyone have a mid '90 400 EC with a factory extended swim platform? like to see some pictures!
 
TALON said:
Anyone have a mid '90 400 EC with a factory extended swim platform? like to see some pictures!
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This is my 1994 (sorry picture is sideways):

IMG_9960.JPG
 
sws01 said:
Location of audible alarm for system monitor? Mines not working. Lights light but no noise. Please help. Thanks.
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The buzzer for the monitor should be under the dash near the monitor. It looks like a little round circle with two wires coming off of it.
 
Eluther3 said:
Getting ready to replace at least one of my fuel pumps due to starting/fuel flow issues. I've seen some attractively priced alternatives on Amazon vs the OEM pumps for around $250. Anyone use aftermarket pumps? Are they any good?

https://www.amazon.com/MerCruiser-Mechanical-818383T-Description-Fitment/dp/B07BBWXZTG/ref=sr_1_11?crid=128Y9N1OCY0U8&dchild=1&keywords=861677t+fuel+pump&qid=1625971204&sprefix=861677T),aps,219&sr=8-11

https://www.amazon.com/Titan-Performance-Mercury-MerCruiser-861677T/dp/B07493Y2HT/ref=sr_1_4?crid=128Y9N1OCY0U8&dchild=1&keywords=861677t+fuel+pump&qid=1625971204&sprefix=861677T),aps,219&sr=8-4
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When I did the repower in my boat over the winter of 2019, I removed the seawater pump/fuel pump assembly and went with an electric fuel pump and a crank driven sea water pump. I was tired of having to blind reach the sea water pump when changing impellers on the starboard motor.

I mounted the fuel pump and the engine mounted fuel filter on a piece of plywood and attached the set up to the engine room bulkhead.

So far, the setup has been real good. Great water flow for cooling. Had an issue where the original electric pump I installed was failing, so I replaced both recently with these:

https://smile.amazon.com/gp/product/B000CSWR9W/ref=ppx_yo_dt_b_asin_title_o02_s00?ie=UTF8&psc=1

Here is the crank driven sea water pump on port engine:

IMG_1734.JPG



This is the starboard:

IMG_1738.JPG



This is the only picture I can find right now of the fuel pump/filter assembly I created (this is the merc pump that failed):

IMG_1264.JPG



I can't find a picture of the Carter fuel pump mounted to the panel with the pressure regulator and pressure gauges I added.
 
h_gerry said:
When I did the repower in my boat over the winter of 2019, I removed the seawater pump/fuel pump assembly and went with an electric fuel pump and a crank driven sea water pump. I was tired of having to blind reach the sea water pump when changing impellers on the starboard motor.

I mounted the fuel pump and the engine mounted fuel filter on a piece of plywood and attached the set up to the engine room bulkhead.

So far, the setup has been real good. Great water flow for cooling. Had an issue where the original electric pump I installed was failing, so I replaced both recently with these:

https://smile.amazon.com/gp/product/B000CSWR9W/ref=ppx_yo_dt_b_asin_title_o02_s00?ie=UTF8&psc=1

Here is the crank driven sea water pump on port engine:

View attachment 108934


This is the starboard:

View attachment 108935


This is the only picture I can find right now of the fuel pump/filter assembly I created (this is the merc pump that failed):

View attachment 108936

Very cool setup
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Robert naughton said:
Starting to get everything together on the new boat. Refinished the dash last weekend and took the panels home to Atl. Made these last night
Click to expand...

I finally have the time to work on this project. I found the panel material and most of the guages, but having a hard time finding a compatible synchronizer. Which one did you go with?
 
sws01 said:
/

You are correct about that location being the fill and vent. Owners Manual Chapter 3 says use hydraulic oil meeting Mil Spec H-5606A and fill to within 1/2" of filler hole.

On mine I don't think I can see down a half inch. Please post your results if you can. Good luck.
Click to expand...

Sorry for slow response...I waited until we'd be out before posting results.
Power steering is good now. I happened to be in the neighborhood of a MarineMax in Osage Beach and picked up steering fluid there. Fill process was pretty old school: Slowly turn the wheel back and forth while trickling fluid into the port. 15 minutes and a few drops later, everything works back to normal. Several outings and steering is on track and smooth.
 
Door handle/latch assembly for forward cabin and head both need to be replaced. The handle shaft going through the assembly has completely worn out the metal guide hole, making them sloppy and virtually unusable.
Flounder has replacement assemblies for around $200+ each.
Any other options on the market that are less expensive? Thanks - Todd
 
Fun Hurts said:
Sorry for slow response...I waited until we'd be out before posting results.
Power steering is good now. I happened to be in the neighborhood of a MarineMax in Osage Beach and picked up steering fluid there. Fill process was pretty old school: Slowly turn the wheel back and forth while trickling fluid into the port. 15 minutes and a few drops later, everything works back to normal. Several outings and steering is on track and smooth.
Click to expand...

Thanks for the info. I haven't been back to the boat since I got the fluid, so I'll try what you said, especially about the "few drops". I had expected it would take a little more than that. IIRC, the manual says to fill until you can see the fluid a 1/4" from the top of the fill neck. I figured it wouldn't take much, but more than a few drops. I'm glad you saw some improvement in performance. Mine seems to be working OK, I just want to take care of as a preventative approach. Thanks again
 
I have a 92 400 EC with 7.4L mercruisers. I had the starboard fuel pump go out on me the other day, so I pulled the fuel pump/water pump assembly. Since I had it out, I went ahead and replaced the impeller in the water pump. I put everything back together and started the engine. Fuel problem is gone, but now there is no water going through engine.

  1. Pulled the pump again and verified the impeller is turning.
  2. Slowly opened the seacock to verify which line was the inlet
  3. Reattached the lines with inlet on bottom and outlet on top
Started the engine and still no water coming out the engine

What am I doing wrong?
 
Eluther3 said:
I have a 92 400 EC with 7.4L mercruisers. I had the starboard fuel pump go out on me the other day, so I pulled the fuel pump/water pump assembly. Since I had it out, I went ahead and replaced the impeller in the water pump. I put everything back together and started the engine. Fuel problem is gone, but now there is no water going through engine.

  1. Pulled the pump again and verified the impeller is turning.
  2. Slowly opened the seacock to verify which line was the inlet
  3. Reattached the lines with inlet on bottom and outlet on top
Started the engine and still no water coming out the engine

What am I doing wrong?
Click to expand...

I replied to your post on the other thread you created.
 
Update - Pulled the pump again and tested to see if it was working and connected correctly. To test, I bought a 2ft length of clear plastic hose from home depot. I attached on one end of the pump and filled the tube with water, then I rotated the pump pulley. When the tube is on the inlet port and pump is working, the water got sucked out of the tube and flowed out the other port. If the tube is on the outlet, turning the pulley will cause air bubbles to show in the tube.

Based on the test, I determined I had the lines reversed. I reinstalled the pump with the lines in the correct position, fired it up and the water flowed!

Ironically, the test confirmed that I had installed the pump correctly the first time. However, I hadn't seen any water coming out, so I assumed I connected wrong, pulled the pump and reversed the lines.

I suspect the pump is not self priming. I pulled the pump on the port engine to replace the impeller on that side. To avoid issues, I made sure to mark the inlet and outlet. I also did the tube test to double check the pump is functional. I reinstalled, but after a few drips, no water came out of the exhaust again!

My plan tomorrow is to shut the seacock and clean out the strainer. Then I'm going to pull the inlet hose, fill it with water and reattach it. That should prime the pump and should solve the problem. Will keep you posted.
 
Eluther3 said:
Update - Pulled the pump again and tested to see if it was working and connected correctly. To test, I bought a 2ft length of clear plastic hose from home depot. I attached on one end of the pump and filled the tube with water, then I rotated the pump pulley. When the tube is on the inlet port and pump is working, the water got sucked out of the tube and flowed out the other port. If the tube is on the outlet, turning the pulley will cause air bubbles to show in the tube.

Based on the test, I determined I had the lines reversed. I reinstalled the pump with the lines in the correct position, fired it up and the water flowed!

Ironically, the test confirmed that I had installed the pump correctly the first time. However, I hadn't seen any water coming out, so I assumed I connected wrong, pulled the pump and reversed the lines.

I suspect the pump is not self priming. I pulled the pump on the port engine to replace the impeller on that side. To avoid issues, I made sure to mark the inlet and outlet. I also did the tube test to double check the pump is functional. I reinstalled, but after a few drips, no water came out of the exhaust again!

My plan tomorrow is to shut the seacock and clean out the strainer. Then I'm going to pull the inlet hose, fill it with water and reattach it. That should prime the pump and should solve the problem. Will keep you posted.
Click to expand...

You may want to do some tests on the strainer and seacock to make sure everything is ok there. start by removing the strainer cover and check the strainer itself. Then open the seacock while the strainer cover is off to see how much water is coming out. It should have some flow to it.
then replace the strainer cover and see what comes out of the hose when the seacock is opened. Again, you should have some flow. You can also use a shop vac and blow air through the seacock and listen for the bubbles coming out the underside of the boat. mid you might have growth on the South Bay Strainers on the outside of the hull it could be blocking the water flow.
 
Good point. I normally use a shop vac to suck out the water in the strainer before I clean it out. Opening the seacock allows me to see the water flow.
 
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