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- Cummins Marine Forum Topics
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Changing ZF80A HSW 800 A2 filter – More Art than Science?
This topic has 5 replies, has 3 voices, and was last updated by
9 months ago July 13, 2023 at 2:20 pm Just replaced the stbd turbo drain line on my 1999 Cummins 6BTA 5.9 M3 330 HP, and while running the engine to check for leaks noticed that I had ATF leaking out from the transmission’s filter cap.Ā No leaks on the drain line – yippee for that. Quick check of the repair/parts manual had me grab my 6mm Allen wrench and get into a boat yoga position to tighten the cap.Ā That didn’t help (it was already ‘closed to the stop&#…
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in: Marine Transmissions
5 RepliesJuly 16, 2023 at 4:00 pm Was able to disassemble the filter today … just got a better angle on the screw and things came apart easily.Ā Thanks for the info – another routine maintenance item I can add to my “don’t have to pay for this to be done” list.Last Post by:
posted: 9 months ago
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Wiring for magnetic pick up tacho
This topic has 3 replies, has 2 voices, and was last updated by
2 years ago February 3, 2022 at 3:32 pm 1999 Cummins 6BTA 5.9 M-3 330HP<br />Currently tacho is fed off alternator – DELCO 15 SI Option. Would like to replace with magnetic pickup per Tony’s “How To Install a Magnetic Pickup to Drive a Tachometer” tip.Ā Ā <br /><br />Everything seems straight forward in the Tip wte of final wiring/hook up.Ā Would I need to purchase a new wiring harness and run it up to the helm, or is there some way to ‘us…
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in: Instrumentation & Electronics
3 RepliesFebruary 4, 2022 at 3:46 pm Wire color is secondary–It’s where they come from,Ā what they do, and where they go.. If you have a Boat builder OEM harness ( looks like you do) then your colors do not match the Cummins factory diagramsLast Post by:
posted: 2 years ago
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Push button vice key to start engines
This topic has 2 replies, has 2 voices, and was last updated by
2 years ago January 6, 2022 at 10:40 am Good day all … So this falls into the āThe man who asks a question is a fool for a minute, the man who does not ask is a fool for life.ā category, so I’ll ask.<br /><br />Twin 1999 Cummins 6BTA 5.9 M3 33HPs … Over the last five years I’ve had to replace each engine’s ignition switch – I keep a spare on hand all the time now since one time the broken switch (it just rotated freely ‘internally&…
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in: Cummins Marine Engines
2 RepliesJanuary 11, 2022 at 1:44 pm Thanks Mike … I’ll take a look at my current ignition wiring and see if I can figure out the two wire solution.Ā I’ll probably put in a ‘cut off switch’ also (or just use and empty aux switch on the dash) for a bit of added ‘security’ – though I figure someone who wants to steal the boat will just hot wire it anyway.Last Post by:
posted: 2 years ago
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1999 6BTA 5.9 M-3 (older style) Heat Exchanger replacement
This topic has 7 replies, has 3 voices, and was last updated by
4 years ago October 1, 2019 at 9:08 am Was seeing signs of the heat exchanger going over the last few month (expansion tank level, engine temps creeping up) and when the alarm started sounding after running at high RPMs after about 5 minutes (temps creeping above 200F) I knew it was time to pull it. Of course it’s the starboard engine, so the heat exchanger is outboard, real PIA to take out. Soaked it (estimate about 1/3 of tubes with at least some blockage) and then pressure …
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in: Cummins Marine Engines
7 RepliesNovember 8, 2019 at 1:45 pm Life, even when retired, intervenes and stops you from getting to the boat, doing work, and then doing sea trials to make sure everything is good to go. So, after a long delay I can report the HE in, dock and sea trials completed SAT and temps stayed right at 175F-180F through a 20 minute WOT run (lots of race tracks). I take the ‘do the after cooler’ comments to heart, and as mentioned, they’re in the budget (at least as pla…Last Post by:
posted: 4 years ago
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1999 6BTA 5.9 M-3 – Change from Alternator to Mag Tach pick up?
This topic has 3 replies, has 2 voices, and was last updated by
4 years ago September 15, 2019 at 3:16 pm One of the things I dislike about my engines is the inaccurate rpm readings I get. My engines have the Bosch alternator tach set up and wonder if I can ‘switch’ over to a magnetic pickup feed for my tach gauges (I’d replace the gauges if necessary) using https://www.sbmar.com/articles/install-magnetic-pickup-drive-tachometer/
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in: Cummins Marine Engines
3 RepliesSeptember 18, 2019 at 6:45 am If you go for it, just run a 14-2 boat wire from the mag pick-up area to the dash for each engine.. That way you’ll get a clean impulse signal for each tach and also then have the option for digital tachs. Your flywheel has 159 teeth. Beede Tach Settings & Cummins Flywheel Tooth Count Adding and extra 14-2 for each allows you to also add redundant alarms down the road if you even want that. TonyLast Post by:
posted: 4 years ago
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Vacuum or over pressure while unscrewing dipstick ZF80A
This topic has 3 replies, has 2 voices, and was last updated by
4 years ago August 12, 2019 at 3:03 pm Went to check transmission fluid level today – Haven’t been out much in the last two months so it’s been a while, but only about 10 engine hours worth of time has passed. When I unscrewed the dipstick there was either a vacuum sucking, or over pressure blowing (couldn’t tell, I’m at almost full arm length reaching the stick) sound. Both levels were fine. Any idea what’s up? I can’t remember hearing th…
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in: Marine Transmissions
3 RepliesAugust 13, 2019 at 4:17 pm Well said, enjoyLast Post by:
posted: 4 years ago
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Still on the hook, things not getting better
This topic has 20 replies, has 4 voices, and was last updated by
5 years ago April 6, 2019 at 4:38 pm Think it’s time to call around and get a professional diesel mechanic out to the boat. If you were following my other thread you saw that my stbd 1999 330 HP 6BTA 5.9 M3 fried the fuel solenoid. Port engine working fine. My solenoid (original) was obsolete of course and the replacement I’ve gotten from the local Cummins distributor doesn’t fit. So I decided to cut my losses and tie wrap the fuel lever in the up position and …
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in: Cummins Marine Engines
20 RepliesApril 18, 2019 at 4:17 pm While we didn’t make it as far south as we had hope, we did find that (aside from the mechanical issue, that I can only hope/think is just something that couldn’t be prevented?) everything on the trip went well. Our year plus of local ‘practice’ and couple of months of voyage planning paid off. We had no navigational or other mechanical issues. No surprises at all. We’re ready to head south again after hurricane…Last Post by:
posted: 5 years ago
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Sitting out on the hook – doing underway repairs
This topic has 11 replies, has 3 voices, and was last updated by
5 years ago April 5, 2019 at 8:19 am Cruising south down the AICW, day two of a three week run and anchored in Lantana Florida. Burned up the fuel solenoid on my 330HP, 6BTA 5.9 M3 (see pic-vertical mount Orig part number 3934972, now obsolete of course-crosses to new 4089574). None in the local area, having one overnighted from Hot Lanta. Should be an easy install – old one already out. Only issue I have right now is the wiring. The plug that connects the solenoid to the…
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in: Cummins Marine Engines
11 RepliesApril 6, 2019 at 11:11 am If I get your Bosch P7100 Fuel Shutoff Solenoid Upgrade Kit, mentioned in Rob’s first post, is that both the bracket and solenoid, or just a bracket that will allow me to put the Woodward I have in hand on to my 1999 6BTA 5.9 M-3?Last Post by:
posted: 5 years ago
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Pencil zinc install – 6BTA 5.9 M3
This topic has 5 replies, has 4 voices, and was last updated by
5 years ago
November 22, 2018 at 11:29 am A HUGE thanks to SB for the great price on a dozen pencil zincs. I checked all the local places around the Port Canaveral area and no one could come close to SB’s price – even with shipping. Now that I have them in hand, it’s replacement time. Two quick questions – 1. How much water should I expect to come pouring out at me (zincs are at top and bottom of the aftercooler, and also bottom side of the heat exchanger…
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in: Cummins Marine Engines
5 RepliesNovember 26, 2018 at 1:16 am Yes agree I suppose closing is better option and ok I see the point now of tapping threads thanks guysLast Post by:
posted: 5 years ago
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Chasing down jumpy gauges – protecting connections.
This topic has 5 replies, has 3 voices, and was last updated by
5 years ago September 19, 2018 at 6:49 am 1999 Cummings 6BTA 5.9 M-3. I’m chasing oil gauge issues on both engines. At low RPMs (<1,000) no issues, all gauges indicate rock steady. When pushing up to say 2,000 one or both gauges will start to swing erratically, and eventually fall to zero. This typically leads to an engine alarm in a few minutes (though not always – not sure why). Jogging the throttles to bring RPMs up and down tends to bring the gauges off the zero,…
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in: Instrumentation & Electronics
5 RepliesSeptember 30, 2018 at 12:29 pm WD-40 and brushes followed by white Li grease (I’ve got a tube of that I use on my garage door). I’ll let you know how it goes.Last Post by:
posted: 5 years ago
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Remote oil and fuel filters/manifolds – Safe?
This topic has 2 replies, has 3 voices, and was last updated by
5 years ago September 23, 2018 at 11:58 am Watching some engine maintenance/troubleshooting Youtube videos I’ve become jealous of a couple of things. One – man, some folks have big engine rooms – they can easily get to both sides of their engines. I have to lay/crawl between the fuel tank and the engine to get to the outboard side of the engine (can’t be done with a hot engine). Two – Saw an engine room that had a fuel system management manifold. The man…
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in: General Discussion
2 RepliesSeptember 23, 2018 at 6:37 pm I had remote oil and fuel filters on the original 1996 6BTA 370s in the 31 Blackfin Combi. same deal…had to be the size of an eight year old hanging upside down to do any work on the outside of either engine. Does make changing filters a breeze. Remote fuel on the Port engine and remote oil on the Starboard. One of each on the correct engine puts all the filters in between the engines. I bought the boat in 2008…put about 100 hrs on …Last Post by:
posted: 5 years ago
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Reading my engine specs sheet
This topic has 3 replies, has 2 voices, and was last updated by
5 years ago August 21, 2018 at 8:46 am My engine’s (Cummins 330B 6BTA 5.9 M-3) spec sheet has graphical and tabular data for fuel consumption. The graph has two curves (a rated curve, and a propeller curve) and the table lists values for only the propeller curve. I’m assuming (and rough calculations hold out) that using the propeller curve is the best way to estimate fuel burn for voyage planning. Am I correct? Thanks, as always, in advance.
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in: Cummins Marine Engines
3 RepliesAugust 26, 2018 at 7:19 pm Thanks Rob … yes, propped correctly (24x26x4) and I easily get to 2,800-3,000, but always back it down after about half a minute to ~2,600 so I don’t push too hard for too long. Plane just over 2,000. Prop curve does make the most sense from what I’ve been seeing in fuel usage. Not really trusting tachs right now, they really jump around, and even though I can ‘synch’ the engines by ear, the two meters are nowhere…Last Post by:
posted: 5 years ago
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ZF Hurth Model HSW 800 A2 – 2.0 Help me learn.
This topic has 4 replies, has 2 voices, and was last updated by
5 years ago July 26, 2018 at 3:12 pm Finally found the tag on one of my transmissions (gear boxes). A Google search didn’t turn up more than a simple chart showing gear ratio, power and torque specs. I’d like to get a better feel for the maintenance routine for them. A operator/maintenance/repair manual would be nice. Looks like this is an older model that has been replaced by the ZF 80A Thanks in advance.
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in: Marine Transmissions
4 RepliesAugust 5, 2018 at 5:16 pm Fluid=Dextron spec ATF AMOUNT= Middle of High Low Marks on dip stick– maybe 5 quarts on a oil change.. DO NOT OVER FILL. TonyLast Post by:
posted: 5 years ago
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Throttle and shifter hydraulic system – unknowns
This topic has 5 replies, has 4 voices, and was last updated by
5 years ago August 4, 2018 at 2:00 pm Pic is of ‘hydraulic’ reservoir/tank next to diesel generators fuel filter – aft stbd bulkhead, engine compartment of a 1999 Maxum 4100 SCA. Google search has me thinking it’s a hynautic brand hydraulic engine control – or something like that?? While I haven’t completely traced them yet, I believe the tank ‘outputs’ go to throttle/transmission and the ‘inputs’ come from helm throttle …
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in: General Discussion
5 RepliesAugust 5, 2018 at 4:35 pm Yes, that reservoir is for throttle and shifter. Steering has it’s own reservoir up at the helm by the steering wheel. Suggest to add fluid and air pressure to what is shown in your pic. Might have to “bleed’ the lines if have air trapped in the hydraulic hoses. I have the original manual for it if you need specific info. Probably on-line also. Good luck.Last Post by:
posted: 5 years ago
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Twin Cummins 330’s 6BTA 5.9 M-3 in a 1999 Maxum 4100 SCA
This topic has 10 replies, has 3 voices, and was last updated by
5 years ago May 21, 2018 at 8:49 am Again, thanks for the add. I’ve been lurking and doing a lot of forum and Tony’s Tip reading – I have twin Cummins 330’s 6BTA 5.9 M-3 in a 1999 Maxum 4100 SCA that are running great right now (knock on wood), but I know I’ll be asking questions about them in the future. Now onto my question. I know this is a long shot – but figure there are experienced people here that might be able to help. …
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in: Cummins Marine Engines
10 RepliesAugust 4, 2018 at 1:07 pm Glenn, No hour meter on mine … switches on the panel itself (upper left of AC) & temperature, oil pressure and output voltage, but no hour meter.Last Post by:
posted: 5 years ago
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ID Label – ZF Marine gear box
This topic has 3 replies, has 3 voices, and was last updated by
5 years ago May 28, 2018 at 9:35 am Continuing to learn the boat … PO paperwork stack has a ZF Marine HSW/HSWE manual (models ranging from 250A through 800 V2). Quick look at the box didn’t show any markings, but I didn’t really bend all over the place. Any thought on where an ID label might be? Thanks in advance.
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in: Marine Transmissions
3 RepliesMay 29, 2018 at 6:59 am Every ’99 SCA and SCB that I know of have Model HSW 800-A2. I believe it is a 1.96:1 ratio. Rob’s pic shows the location of the tag. Good luck.Last Post by:
posted: 5 years ago
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Changing ZF80A HSW 800 A2 filter – More Art than Science?
