if they don't have valves it will have a plug. The result is the same, you just get diesel all over your hands versus the valve that's easy to drain then close.
Official Caterpillar3116/3126 Thread
- Thread starter carterchapman
- Start date
if they don't have valves it will have a plug. The result is the same, you just get diesel all over your hands versus the valve that's easy to drain then close.
- Jun 2, 2008
- 5,024
- Boat Info
- 1998 450 Sundancer, Achilles dinghy w/15hp
- Engines
- 3126 Cat's
Buy the valves, drain bowls completely, install valves for next time. I have done the same with my transmissions.
I have twin 900's for each of my CATs and a single 500 for my Westerbeke. I run 10 microns and some run 30...
Sgrochow
Active Member
- Jun 2, 2008
- 5,024
- Boat Info
- 1998 450 Sundancer, Achilles dinghy w/15hp
- Engines
- 3126 Cat's
I believe the plug is necessary under USCG reg's. I have them plugged too, the bolt out of the bottom of the Racor fits into the valve.
- Aug 20, 2021
- 1,312
- Boat Info
- Started out as MAYBE A DANCER
Became a Dancer - 12/23/21
- Engines
- 450 DA Sundancer running CAT 3126
==========
to avoid any confusion......
Filtration unit for the engines are model 900
genny is the 500
BEST !
RWS
- Aug 20, 2021
- 1,312
- Boat Info
- Started out as MAYBE A DANCER
Became a Dancer - 12/23/21
- Engines
- 450 DA Sundancer running CAT 3126
2nd that for all racor bowls. Plug below the valve is a good idea too.
Been doing exactly this for about 15 years.
Also found out that if you don't use the additives, as per Dr. Webster, those asphaltanes will actually plug up the drain valves.
I dun lernt the hard way, digging mine out (only once) with a pick, an awl and a drill bit on a vice grip.
99% sure the 410 got a 500MA per main engine. My survey says 500 as well
maybe the 450 got bigger for some reason?
- Jun 2, 2008
- 5,024
- Boat Info
- 1998 450 Sundancer, Achilles dinghy w/15hp
- Engines
- 3126 Cat's
My CATs are twin 900 per engine and the gen is single 500 - the numbers are for the housing not the filter itself,
Brand Racor, Part Number: 2040N-10, Filter Housing Series: 900,
oh that confirms it then, our mains take 2010PM. The 370/380/400/410 must have gotten the 500MA’s. You can see it in the pic from @mrsrobinson above, just barely
now that I think about it - maybe a horsepower requirement? Aren’t you 450DA guys 420HP 3126’s?
I’m sure @fwebster will set us straight soon enough
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mrsrobinson
Well-Known Member
So for the 500MA do I need the 2010PM-OR Racor Fuel Filter or the 2040N-10 Racor Fuel Filter?
2010PM-OR (for 30 micron)
- May 25, 2016
- 930
- Boat Info
- 2008 48 Sundancer
Avon Seasport 340
- Engines
- Cummins QSC 8.3's
40 HP Yamaha
You need the 2010PM, and it's a good practice to always replace your seals as well. https://marinepartssource.com/fuel-...gg9mfQXqBPqhOk2n1qyLIOE_79cAwr1xoCcUgQAvD_BwE
- Jun 2, 2008
- 5,024
- Boat Info
- 1998 450 Sundancer, Achilles dinghy w/15hp
- Engines
- 3126 Cat's
The 2010 = 500 & the 2040 = 900
Brand Racor, Part Number: 2040N-10, Filter Housing Series: 900,
2010PM-OR Fuel Filter Element Replacement for 500FG 500FH Marine Diesel Engine
Njlarry
Well-Known Member
Dumb newbie question but what is the correct wot rating Just found a CAT web page that says the 3126 wot is 2650. Have read 2800, 2850? Cannot find it in the 3116, 3136 Operation and Maintenance Manuel.
- Jun 5, 2016
- 5,571
- Boat Info
- 410 Sundancer
2001
12" Axiom and 9" Axiom+ MFD
- Engines
- Cat 3126 V-Drives
2800+. Its printed on the engine decal
mrsrobinson
Well-Known Member
Yep scroll up and you'll see my engine decal that shows this
mrsrobinson
Well-Known Member
I just watched some videos on how to replace the Racor filter. They suggest filling the canister back up with diesel fuel, video I watched looks like the dude was using a water bottle for the diesel fuel. Is this what others do? Is something like an empty gallon water jug safe to use for storing diesel fuel?
- Jun 5, 2016
- 5,571
- Boat Info
- 410 Sundancer
2001
12" Axiom and 9" Axiom+ MFD
- Engines
- Cat 3126 V-Drives
I fill the bowl back up with clean diesel using basic 1 gal fuel jug, put the cap on and then prime/bleed the system.
Then you need to bleed the system. I use the priming pump, but if yours is old or leaking, it’s a messy PITA. I replaced my pumps to make sure they function.
Frank recommended opening the throttles and starting the engine, then closing the throttles when it fires.
Last edited:
- Jun 2, 2008
- 5,024
- Boat Info
- 1998 450 Sundancer, Achilles dinghy w/15hp
- Engines
- 3126 Cat's
I close the fuel valve at the racor, drain them, replace the filter and turn the valve back open, they then fill themselves...
douglee25
Well-Known Member
Greg - one bit of advice if I may.... make sure you read and understand the filter changing procedure 100%. Otherwise you'll introduce air into the fuel system and you're going to be back here asking how to restart your engine. It won't be fun.
