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- Cummins Marine Forum Topics
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No forward gear Cummins and zf trans
This topic has 1 reply, has 2 voices, and was last updated by 1 year ago
December 5, 2023 at 7:30 am HelloĀ I am new here and hoping someone can help me out. I took over some repairs on a 441 meridan with cummins and v drive 2008 model year. When I got on boat the last company couldnt fix a No comm fault on port engine. I found several issues but main one was the mus plug had been changed and not wired correctly. I know have comm and engines start and run but I am without forward gear on port side. I am not getting the ground signal to forward …
1 ReplyDecember 8, 2023 at 6:11 pm Sounds like you are dealing with some version ( 4 versions) of Mercury SmartCrap electronics/control system.. Ā Do you have a wiring diagram specific to the version you have?Ā Ā Pictures of the controls?Ā Ā Ā Seaboard Founder Go here for the latest material we put together and share for all to see:
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Twin disc and QSM11
This topic has 1 reply, has 2 voices, and was last updated by 1 year ago
November 24, 2023 at 6:32 pm Good evening, I am in the process of powering a boat with a qsm11, currently the boat has a man D2876LE401 with a twin disc MG514c gear. Was wondering if there is a bell housing to join the twin disc with the qsm11?
1 ReplyNovember 25, 2023 at 1:17 pm Your MAN engine probably has the same SAE specs as the QSM11–SAE 1 & SAE 14″ for the bell housing & flywheel–Should be “Plug & Play”Ā Ā BTW—–The Twin Disc MG514CĀ is a very good gear –kinda like they do not make them that good anymoreĀ Ā Ā Caution though– The QSM 11 is most likely less engine that the MAN so you will need to prop down to where the QSM11 is at or below 20 GPM…
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Milky Trans Fluid
This topic has 2 replies, has 2 voices, and was last updated by 1 year ago
November 14, 2023 at 5:04 pm I have 1998 Cummins 6BTA coupled to a Hurth V-Drive Model HSW 800 V1-2.0 with the stock oil cooler. I maintain the raw water system myself making sure aftercooler and heat exchanger are cleaned every 3 years. I did remove the oil cooler a couple years ago and cleaned and rigged up a pressure test to look for any leaks between the raw water side and oil side and it seemed ok.Ā Oil level was ok. But when I changed the V-drive Hydrolic oil this tim…
2 RepliesNovember 15, 2023 at 4:57 am Looks a new oil cooler is in my future. For what ever reason I was thinking that the oil pressure was higher than the raw water pressure.Ā I have an early 6BTA 370 with a 3x5x10 OAL 1.5″ hose. I see that there are 2 options. Is the only difference in the black one pictured is that it has pencil zincs on the ends?Ā As far as flushing, and pardon my ignorance, I see where you mention the use SAE 10 or 20W to do this. Are we talking regular m…
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Twin disc starting in gear
This topic has 3 replies, has 3 voices, and was last updated by 1 year ago
October 29, 2023 at 9:40 am Hi there, Both of my twin disc gear boxes start in any position. Is that a normal operation? Ā 99/98 B series 330 with twin disc.Ā Thx – Lew Lew
3 RepliesOctober 31, 2023 at 6:59 am If you don’t have neutral safety switches, the engines will be able to start in gear. It doesn’t have anything to do with clutches. The neutral safety switches on my ZF gears are threaded into the box the shift levers attach to on the gear. The wire that carries the “start” signal goes from the helm START switch to the safety switch, then to the magnetic start solenoid. The switch only lets the ‘start’ signal …
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ZF 80 sticks in reverse
This topic has 3 replies, has 3 voices, and was last updated by 1 year ago
September 30, 2023 at 10:19 pm 2005 390 Sundancer with QSB 5.9 and ZF 80 transmissions. Ā Ports side engine sticking in reverse. Ā Replaced the entire solenoid assembly (parts from SBMAR) and it is still happening. Ā However after replacing it did hold neutral upon starting. Ā Forward shifted fine. Ā Shift to reverse it went in gear, and then back to neutral itās like itās not completely shifting out of reverse. Ā Shaft turns slowly, not at full rpm. Ā I can shift in forward from th…
3 RepliesOctober 13, 2023 at 3:34 am Please double check what I am outlining here! A very knowledgeable dock mate suggested a possible remedy for your problem could be a dirty screen on the bad shifting plunger.Ā If not already done remove shifting plunger (the thing the solonoid moves) and clean screen.Ā There should be pics and/or drawings in your ZF manual. Good luck
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Shaft Zincs falling off
This topic has 1 reply, has 2 voices, and was last updated by 1 year ago
September 20, 2023 at 11:48 am Shaft Zincs falling off<br /><br />42 Tiara Open QSM 11 Cummins.<br /><br />I just had my Port Trans rebuilt due to failed clutches (locked UP) work completed all good. After the rebuild I had a routine bottom job and had the props checked and balanced.<br /><br />The yard put on 2 new 2 1/2 inch shaft zincs on each shaft like I always do. In 60 days my diver checked my bottom and found the 2 shaft zincs on th…
1 ReplyOctober 8, 2023 at 4:33 pm Try this———-aft zinc no more than 3″ in front the the strut–Next zinc,Ā 1/2″ max in front of the aft zinc.. Seat both with a hammer a few times and double, triple, quadruple, tighten as reseat with a hammerĀ as they are tightened. Seaboard Founder Go here for the latest material we put together and share for all to see:
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ZF 220 Transmission – Adding Oil
This topic has 4 replies, has 3 voices, and was last updated by 1 year ago
September 27, 2023 at 5:34 am Good Day, Am new owner of a Monk 36 with a ZF220 transmission and during a fluid level check, I noticed that the oil level was very low.Ā I have the manual with the diagram that highlights the oil filler plug (cap) and other components.Ā I was having a real hard time loosening the oil fill plug so I am wondering whether I can add the oil through the dipstick receptacle?Ā As I am new to all this, I want to ensure I get things right from the get g…
4 RepliesSeptember 27, 2023 at 6:37 pm The important thing Rob sent is the two minute window to check the oil after turning engine off. Can’t check it cold.
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Ran a ground. Need some advice
This topic has 1 reply, has 2 voices, and was last updated by 1 year ago
July 15, 2023 at 7:03 am Short story long. Was on a plane cruising and bam ran a ground. We have some shoaling developing in side the channel in my area. Bow started to float and the high winds yesterday basically spun me off the sand and was able to get home. I noticed that that starboard transmission is slowly spinning in reverse when in neutral.Ā 98 carver 400 cpmy. Twin 6bta 5.9 370 diamonds with zf85a 2:1.Ā had the marina haul the boat and a lot of damage.Ā port str…
1 ReplySeptember 4, 2023 at 6:41 am A grounding like you describeĀ would NOT BE attributed to this particular symptom.Ā Ā Seaboard Founder Go here for the latest material we put together and share for all to see:
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ZF302V-LD pressure loss on plane
This topic has 1 reply, has 2 voices, and was last updated by 1 year ago
August 27, 2023 at 12:28 pm 1995 3500 Tiara express with 6ctaās and zf302vldās Hello,Ā I was on plane about 20 minutes on the Detroit river with normal pressure reading on transmission gauges ( around 360+/-) and she started to fall of plane- quick check and port was at 235- ish psi, came to idle and went to neutral where gauge stayed at around 235 psi. Shut down and check oil level, good and clean looking oil, restarted and when I shifted in forward the pressure dropped t…
1 ReplySeptember 4, 2023 at 6:25 am Look at the picture.. If I were you I’d be getting a full manual for the gear and learn it as best you can–A very good gear but not made anymore.Ā When shifting it is 100% normal for OP to drop veryĀ low for a couple of secondsĀ Loosing pressure on plane needs to sorted out before you ruin the gear.Ā How close are you to Liberty, Kentucky?Ā Seaboard Founder Go here for the latest material we put together and share for all to see:
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ZF Pressure/Temperature Senders
This topic has 3 replies, has 3 voices, and was last updated by 1 year ago
July 9, 2023 at 8:31 am Greetings, I was pleased to find this topic regarding temp/pressure tap locations on the ZF ATF trans. ZF “ATF” Transmission Pressure and Temperature Sender or Switch Locations (ZF 45/63/68/80/85) I think I’ve identified the pressure sender and adapter fitting for it. I can’t find the same information for the temperature sender. Questions: what adapter and sender for temperature. I’d like to have analog sender, …
3 RepliesAugust 9, 2023 at 8:36 am Scott, My transmissions currently have only a temperature switch. I’d like to install a resistive sender in that location and add a pressure switch or sender. I know the port threads but am looking for PN recommendation sor sender/switch device. I purchased an Albacombi converter but haven’t started setting it up yet.Ā AAdam
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ZF 325-1 transmission- pressure drops to idle (~5 bar) intermittently
This topic has 10 replies, has 2 voices, and was last updated by 1 year ago
August 2, 2023 at 9:30 am Having a problem with my 2006 ZF 325-1 transmission. Ā It will typically start up fine, but at some point while underway (up to hours after continual running), the pressure will drop to idle. Ā Resetting the electronic controls and/or swapping the filter usually gets it running again, but only temporarily. Ā The issue recurs eventually. Ā Oil filter and screen filter are both good. Ā Pulled the ECV apart today and didnāt see anything incredibly suspi…
10 RepliesAugust 3, 2023 at 4:19 pm You do not necessary need the rubber cover.. Just make a gasket, use a good modern sealantĀ Ā and reinstall the square cover plate ( wait 48 hours) .Ā Seaboard Founder Go here for the latest material we put together and share for all to see:
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Zf301A 2.901:1 PTO
This topic has 3 replies, has 2 voices, and was last updated by 1 year ago
July 24, 2023 at 10:23 am I am wanting to drive a hydraulic pump 13tooth B flange and curious if my transmission can do it or not.Ā Attached pictures. Larry
3 RepliesJuly 28, 2023 at 6:40 am You have an medium early 301A–Lots of design changes over the years on this gear. Send me that picture direct and a clear picture of the data tag–I’ll see what you may be able to do.’ Do you have room up from for a reliable belt driven small hyd pump? Seaboard Founder Go here for the latest material we put together and share for all to see:
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1999 Cummins 6BTA 5.9 Transmission Oil Change
This topic has 3 replies, has 3 voices, and was last updated by 1 year ago
July 23, 2023 at 8:18 am I need to change my transmission oil on my twin Cummins 5.9 engines. I have the quick drain feature.Ā Questions: What is the capacity for transmission fluid? What type of fluid do I need, is ATF from auto parts store ok? What other items should I be checking, is there a filter/strainer I need to check? Is it easy as it sounds, just drain and refill? Frankster13
3 RepliesJuly 24, 2023 at 6:19 am It’s all here on the forum.Ā Use the Advanced Search feature.Ā Search term 220 and rob as author. Rob "Luck is the residue of good design."
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ZF 280 iv (imr280vld.1) Transmission
This topic has 3 replies, has 2 voices, and was last updated by 1 year ago
June 19, 2023 at 1:56 pm Hello,Ā Having an issue, looking for help/direction. Intermittently, when I activate the forward gear, no reaction from transmission. Iāve cleaned the shift solenoid, replaced the coil and wire harness. When the issue occurs, if I tap on the shift valve, it starts working normally for the day.Ā I am told that I should upgrade the oil to Mobil424. Only happening to the forward direction, voltage is the same on both primary and secondary. 12.93 C…
3 RepliesJuly 19, 2023 at 6:51 pm Dirt was the issue–Good job.. As to Mobil 424—On paper per the specs, it has it all andĀ I like it a lot for just the reasons you found, but per ZF, I am no longer supposed to recommend it . “Politics?”Ā Ā Seaboard Founder Go here for the latest material we put together and share for all to see:
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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 1 year 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…
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. Paul Changes in L'Attitudes 1999 Maxum 4100 SCA Twin Cummins 330HP 6BTA 5.9-M-3
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Proper shifter postion under tow
This topic has 1 reply, has 2 voices, and was last updated by 1 year ago
June 6, 2023 at 7:41 am I have Dual Cummins 6CTA 8.3 T1 M and ZF 280V-drive transmissions. When under tow or running on one engine (emergency only), where should I have the shifter lever (forward, reverse, neutral)? Thanks Doug Doug D
1 ReplyJuly 16, 2023 at 3:15 am If the engine not being used in not running, it makes zero difference where the shift lever is. Seaboard Founder Go here for the latest material we put together and share for all to see:
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Coupler shaft nut
This topic has 5 replies, has 3 voices, and was last updated by 1 year ago
July 11, 2023 at 9:04 pm My 20 year old Tides shaft seals are leaking so I am replacing them.Ā Probably sticking with Tides although I’ve read all the very compelling arguments around packing glands.Ā Anyways…. I just want to verify that the shaft nut that holds the coupler on is removed in a counter-clockwise manner when looking at the nut from the end of the shaft, as in the photo. I’ve put a LOT of torque on that nut and I’m getting no movemen…
5 RepliesJuly 14, 2023 at 1:27 pm Update:Ā I was able to get both coupler nuts off.Ā I did give clockwise a try, but got nothing.Ā So I went back to counter-clockwise (normal thread) and a bigger cheater bar.Ā While applying a lot of torque and tapping the socket with a hammer they both broke free!!Ā Now to get those couplers off!!Ā Thanks again for the suggestions!
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No neutral. Neutral selected but boat keeps moving FWD
This topic has 2 replies, has 2 voices, and was last updated by 1 year ago
June 24, 2023 at 10:02 am Hi Tony! Last week, my Port side Cummins QSM11 with Twin disc transmission (MG5082 SC) with manual shifters, started to fail. Even with the lever in NEUTRAL, the shaft is rotating as if it was placed in forward but at a lower speed than if engaged to the FWD position, it also generates a little thrust. (See video attached) Cable is OK. Oil was replaced 3 months ago. Temp and pressure look good. Reverse works well. Mechanic told me that it is tim…
2 RepliesJuly 10, 2023 at 8:34 am Hello Tony! Thank you very much for your reply,Ā your input gave me a lot of mind peace. But also, FYI and feed back for the forum, I checked the oil level again and it was a little low, so I added less that a quart and guess what… The transmission worked just fine. Have a great summer and thanks for your precious tips. Rgds Marcelo
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ZF 301 serial# 92.4572
This topic has 1 reply, has 2 voices, and was last updated by 1 year ago
June 25, 2023 at 10:00 pm The boat has been dry docked for awhile and I see the milky white-ish in the tube on the marine gear. Itās the ZF 301, 1.862/1, serial number 92.4572. Any suggestions on the way/s to flush it out ?Ā <br /><br /> photo of the tag attachedĀ
1 ReplyJune 27, 2023 at 7:53 am Suck the gear dry out the bottom drain plug on the gear. Remove the oil lines going the the gear cooler and flush it it too uses #2 diesel and then air to blow it out…Ā Replace the oil filter with new Let’s SEE how milky the oil is before to do a fresh oil start-up. Seaboard Founder Go here for the latest material we put together and share for all to see:
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ZF301-AāWhere do I put the new oil?
This topic has 5 replies, has 3 voices, and was last updated by 1 year ago
June 20, 2023 at 5:49 pm I am changing the transmission fluid/oil in my ZF 301A transmissions and have a couple of questions: * Where do I put in the new oil (dipstick)? Ā Donāt believe there is a filler cap on this ZF transmission. * Am I able to remove all of the oil via the dipstick or do I need to remove the oil drain plug?Ā Ā ThanksAdam
5 RepliesJune 25, 2023 at 2:11 pm Yes you can suck it out that way, but even easier may beĀ to putĀ the oil pressure line that exits the pump into an appropriate container and start the engine.. The oil will all pump out until the pump sucks the transmissiom sump dry or sucks air and looses prime.. No ISSUE doing this .. Seaboard Founder Go here for the latest material we put together and share for all to see:
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No forward gear Cummins and zf trans
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