480 DB Owners Club
- Thread starter Four Suns
- Start date
quality time
Well-Known Member
- Oct 30, 2007
- 2,360
- Boat Info
- Miss Stress
2006 50' Post
- Engines
- Series 60 Detroits
I just replaced the sending units this winter. You have to unscrew the L brackets that hold the sofa to the floor and pull it out. There is a 6” white round access plate in the floor (back towards A/C unit) that is somewhat located over top of the PORT sender.
The STBD sender access plate is in the bottom of the cabinet where the Glomex control is located. Remove the wood access panel in the bottom shelf and you’ll see the white round access plate. This one is lined up better.
There is no way to do this from the engine room. Even with access from above it’s not an easy task.
The STBD sender access plate is in the bottom of the cabinet where the Glomex control is located. Remove the wood access panel in the bottom shelf and you’ll see the white round access plate. This one is lined up better.
There is no way to do this from the engine room. Even with access from above it’s not an easy task.
dcpringle
Active Member
- Dec 13, 2012
- 492
- Boat Info
- 2000 Sea Ray 480DB "Diamond Girl"
- Engines
- Cat 3196 660HP
There are cutouts behind the couch and in the base of the cabinets on the starboard side...odd they are both out at the same time.
I'm putting in new WEMA Fuel senders in a 2004 this weekend since I have the floors out anyway, I can snap some pics from top and bottom if that helps, but the info above is correct, they have to come out through the access holes. The WEMA units cost a little more, but I think they use magnets and not a mechanical arm w/ the resistors built in --- that's what usually fails
quality time
Well-Known Member
- Oct 30, 2007
- 2,360
- Boat Info
- Miss Stress
2006 50' Post
- Engines
- Series 60 Detroits
I used the Livorsi autocal's, no swingarm/float either.
Quality Time, or anyone else w/ QSM11s of 2003/4 vintage, which version of Smartcraft System View do we have (I'm not at the boat) as in what SIM revision? I'm trying to figure out if there is an upgrade path to Vessel view 4 or 7 without upgrading the SIM? Thanks
quality time
Well-Known Member
- Oct 30, 2007
- 2,360
- Boat Info
- Miss Stress
2006 50' Post
- Engines
- Series 60 Detroits
Sorry, I can't help with that off the top of my head. I'd be interested to know what you find out though so please report back.
I've been on the phone w/ the diesel support side of vessel view (looking at the 703, 4 is not an option w/ what we have) about upgrading from the original smart craft/diesel view that came w/ the boat. Sounds do-able w/ a few twists. I'll report back. So far it doesn't appear that the new vessel view, nor the C127 raymarine monitor will pick up my EGT info on NMEA PGN 130316 from the maretron TMP100, so I guess that will be another gauge......
I know this is a long shot, but by any chance does anyone with QSM11s have photo(s) of the wiring on the back of the Stop/Run/Start rocker switches and Emergency Start rocker switch on the bridge? When the boat was being transported while out of the U.S. one of the Stop/Run/Start rocker switches broke and they replaced both of them with some type of toggle switches they mounted above the original rockers where the blanks are. I have the S/R schematics and diagrams on the new OEM Carlings I purchased to work it out, but a go-by picture sure would give me a lot more confidence I have it correct. Thanks.
SexSea Bermuda
New Member
- Jan 28, 2016
- 2
- Boat Info
- 480 Sedan Bridge 2002 Cummins QSM-11 Apex 11' Yamaha 40 HP
- Engines
- Cummins QMS-11
thanks for the help Quality Time will hit ports side this weekend
Steve 48 Sedan Bridge
New Member
- Mar 25, 2018
- 11
- Boat Info
- 2003 Sedan Bridge 48
- Engines
- QMS 11s 640 hp
What are your thoughts on the QSM 11s I have them in a 2003 sedan bridge
quality time
Well-Known Member
- Oct 30, 2007
- 2,360
- Boat Info
- Miss Stress
2006 50' Post
- Engines
- Series 60 Detroits
Great engines, just make sure they are propped correctly. Lots of info here and on Boatdiesel.
Steve 48 Sedan Bridge
New Member
- Mar 25, 2018
- 11
- Boat Info
- 2003 Sedan Bridge 48
- Engines
- QMS 11s 640 hp
I’m new to the forum and would like some info on the correct propping of my QSM 11s
Cheers Steve
Cheers Steve
Steve 48 Sedan Bridge
New Member
- Mar 25, 2018
- 11
- Boat Info
- 2003 Sedan Bridge 48
- Engines
- QMS 11s 640 hp
Have you had your props re pitched
quality time
Well-Known Member
- Oct 30, 2007
- 2,360
- Boat Info
- Miss Stress
2006 50' Post
- Engines
- Series 60 Detroits
Yes, I'm now at 28 x 31" with #2 cup. I just had them brought down from #5 cup this winter and will see if that was a good or bad move next week. I'd say most agree that you should start by removing an inch from the factory 32" pitch and may need to go further. Some guys are running 29.5" while others are at 30" and 31". Every boat is different and depends on how much stuff you are carrying and dingy etc...
The method that some of us prescribe to is that you should burn 18 GPH @ 2000 RPM to keep the heat down on the dry manifold/turbo set up. Last season I was at 19-20 GPH @ 1950 RPM with an EGT of 925-950.
The method that some of us prescribe to is that you should burn 18 GPH @ 2000 RPM to keep the heat down on the dry manifold/turbo set up. Last season I was at 19-20 GPH @ 1950 RPM with an EGT of 925-950.
A fellow named Tony Athens at Seaboard Marine has done all of the leg work to show how to properly load the QSM11. As quality time states above the sweet spot is 18 GPH at 2000 RPM. This link goes through Tony's work and recommendations:
https://www.sbmar.com/articles/propping-cummins-qsm11-to-prevent-exhaust-leaks/
https://www.sbmar.com/articles/propping-cummins-qsm11-to-prevent-exhaust-leaks/
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What QT said is correct, every boat is different. I took the pitch in mine down to 29. Just was able to get it out an on the plane after a long stay in the boatyard. Fresh Bottom, Full fuel and water (Salon interior still out though) and it jumped out of the hole and hit 35mph w/ a little throttle left. We're just checking to see if the turbos would spool up, real test run later this week. Getting the new gauges/displays hooked up now so I can see EGT, fuel burn, etc, but am expecting to have significantly taken the lug off the engines and cool the exhaust down.
Also, still looking for a picture of the backside wiring on the Stop/Run/Start switches for each engine and Emergency Start switch for a 480DB w/ QSM11s if anybody feels particularly sympathetic.
quality time
Well-Known Member
- Oct 30, 2007
- 2,360
- Boat Info
- Miss Stress
2006 50' Post
- Engines
- Series 60 Detroits
Sorry, I meant to take a pic this past weekend but was scrambling to get ready for launch this week. I'll be down a few times this week and will try to remember.
Thanks so much, that would be awesome, should just be 4 corner screws and lift up slightly enough to get an angle of the wires connected to the lower left 3 rocker switches. Thanks!!!!!
Confused. Looking for some help... boat splashed in yesterday. Went down to fire up engines, gennie, etc. Engines will crank and crank, but not start. Both Port and Starboard. I did not winter work other than zinc changes. Boat ran great at end of season and right up to winterizing. Very odd. Turn keys on in salon and toggle down both ignition switches. Screens power up and show System OK. Then crank and crank, but no start. Seems like not getting fuel, but I didn't change any filters to allow air in and both of them doing it??? Any help would be appreciated. Dave
