This forum contains 79 topics and 365 replies, and was last updated by  Rob Schepis 9 hours ago.

Viewing 20 topics - 1 through 20 (of 79 total)
    • Cummins Marine Forum Topics
    • ZF Gear Low Pressure Sensor/Alarm Location

      This topic has 5 replies, has 3 voices, and was last updated by Rob Schepis 9 hours ago

      June 17, 2019 at 5:48 pm I would like to install the SMX Gear Low Oil Pressure Alarm Switches on my ZF 220A transmissions. Where is the best location to install them. I see two locations on your web-site from pressure sensing of the transmission/gear pressure gauges/sensors (see attached pictures).

      Started by:  majipatrick


      5 Replies
      June 18, 2019 at 6:05 am If you use both stations regularly than you should have alarms at both. Rob "Luck is the residue of good design."

      Last Post by:  Rob Schepis posted: 9 hours ago

    • ZF 280-1

      This topic has 1 reply, has 2 voices, and was last updated by Tony Athens 3 weeks ago

      May 27, 2019 at 8:44 am Hello Am from saudi arabia iwant to change the oil what is the alternative foe Sae 30 not found in our country ZF 280-1

      Started by:  roaa.zailaie


      1 Reply
      May 27, 2019 at 9:58 am Use a heavy duty SAE 15W-40 diesel engine oil.. Tony Tony Athens Seaboard Founder Go here for the latest stuff we put together and share for all to see: https://www.sbmar.com/tonys-tips/

      Last Post by:  Tony Athens posted: 3 weeks ago

    • transmission fluid leaking from filter cap

      This topic has 1 reply, has 2 voices, and was last updated by Tony Athens 3 weeks ago

      May 24, 2019 at 9:31 am Hi ! I have two 1991 Hurth ZF 63A in my Wellcraft 33 Sports bridge on the back of 7.4 Bluewaters. I’ve tried tightening the filter covers that have large O-rings on them. I cleaned them good, and they still leak once and a while, making a mess in the bilge and oil sox. I’ve just ordered two new filters and O-rings, and will try that. Just not sure why it keeps happening !!???? Help ! Bob – In Boston ! Captain: Robert Farley

      Started by:  Bob Farley


      1 Reply
      May 25, 2019 at 7:34 am Could you be over filling and causing excess pressures.. Run at the low mark on the dip stick.. How to properly read your dip stick in of this site.. Tony Tony Athens Seaboard Founder Go here for the latest stuff we put together and share for all to see: https://www.sbmar.com/tonys-tips/

      Last Post by:  Tony Athens posted: 3 weeks ago

    • ZF 63a Pressure Switch Help

      This topic has 4 replies, has 3 voices, and was last updated by Corey Schmidt 4 weeks ago

      May 19, 2019 at 9:13 am Hi Guys, Does anyone know where I can locate this sensor? I need to replace it because the ears broke off. It has a ton of numbers on the base of the sensor. Thanks, Pat Attachments:You must be logged in to access attached files.

      Started by:  Patrick Presti


      4 Replies
      May 20, 2019 at 12:02 pm Patrick Presti wrote: Hi Corey, There is no gear oil pressure guage on my panel so I assume it’s a pressure alarm sensor? Pat If it just a low oil pressure switch… then any switch that fits physically where the old one did should work fine. The switches are typically normally closed, FYI. Also, some of the switches are adjustable so you can modify the alarm set point. Corey Schmidt | VP, Operations | Seaboard Marine, Inc.

      Last Post by:  Corey Schmidt posted: 4 weeks ago

    • Dripless shaft turning in current

      This topic has 2 replies, has 3 voices, and was last updated by Rob Schepis 1 month ago

      May 16, 2019 at 1:46 pm Launched my boat yesterday with no issues. A few hours later, the current in my river was at mid-tide and flows extremely fast. I was in the engine room and the starboard shaft started rotating and then eventually the port shaft. Boat is a 2005 Luhrs 36 open with twin cummins 6c 8.3’s with hydraulic transmissions and dripless shaft seals. This is the the third year with the boat and I do not recall the shafts ever turning in current. Mind …

      Started by:  Dave Galehouse


      2 Replies
      May 16, 2019 at 3:19 pm What river is she slipped on? What dripless setup, Tides, PSS, or ?? Rob "Luck is the residue of good design."

      Last Post by:  Rob Schepis posted: 1 month ago

    • Mobilfluid 424 – ZF285A

      This topic has 2 replies, has 2 voices, and was last updated by Philip 1 month ago

      May 5, 2019 at 4:46 pm So I wanted to give everyone some initial feedback on Mobilfluid 424 use in marine transmissions. When I bought by boat a few years back I wasn’t completely convinced my electronic trolling valves were working 100% as good as they should or could. When in trolling mode adjustment of trolling speed was inconsistent and difficult at best. One of the things suggested was a switch to Mobilfluid 424 which is advertised as a tractor and hydraulic tr…

      Started by:  Philip


      2 Replies
      May 7, 2019 at 8:53 am There has got to be a valid argument that an oil formulated for wet clutch transmissions has got to be better in the long run on the clutch and transmission. It’s not easy to get your hands on, but I ordered online for ~$90 for 5 gallons. That’s comparable to 30wt engine oil and I didn’t have to leave my couch, I’ll be running the oil over the summer and will report back my experiences. Phil

      Last Post by:  Philip posted: 1 month ago

    • Twin disc 5050 oil level

      This topic has 1 reply, has 2 voices, and was last updated by Tony Athens 1 month ago

      May 1, 2019 at 6:14 pm We have two twin disc 5050 transmissions, checked the transmission oil today while running in neutral and had been warmed up, the starboard transmission showed nothing on the dipstick, the Port was showing almost to the top of the dip stick. Drained all of the oil from each transmission and got one quart from the starboard transmission, which had no dipstick reading, and 1.25 quarts from the port transmission that was reading high. My label says…

      Started by:  Eric Martin


      1 Reply
      May 7, 2019 at 4:36 am Don’t buy your way of checking the oil in a small gear like this……………….Check withing a minute of after shutting down–Level between the High & the Low marks.. Your call.. Tony Tony Athens Seaboard Founder Go here for the latest stuff we put together and share for all to see: https://www.sbmar.com/tonys-tips/

      Last Post by:  Tony Athens posted: 1 month ago

    • bad rear seal on Hurth HSW630A 1.25 to 1

      This topic has 1 reply, has 1 voices, and was last updated by IslandStyle 1 month ago

      April 30, 2019 at 11:56 am Well took the boat out and leaking fluid from rear seal. Was going to order a seal and O ring and attempt this repair myself. Talking to a few people they are suggesting to remove the transmission from the boat. Was trying not to do that and was wondering if anyone has attempted this task while in the boat and any suggestions or hints on this? thanks in advanced JD

      Started by:  IslandStyle


      1 Reply
      May 2, 2019 at 7:38 am just an update replaced the seal last night all went well. Not too bad of a job and left the transmission in the boat. Approx 2-3 hour job for future ref.

      Last Post by:  IslandStyle posted: 1 month ago

    • Reduction ratio

      This topic has 5 replies, has 4 voices, and was last updated by dvm004 1 month ago

      April 24, 2019 at 3:22 pm Hello, new member with a question about choosing a reduction ratio for a zf 220a for a cummins 6bt. My son and I are repowering a 66’ webber cove 34’ lobster boat that weighs about 16k lbs. She cracked a head on the old volvo penta tamd40 and we pulled it and junked it. We took our time and built a 6bt, with mild p-pump changes. mild 6bt, no aftercooler, 230/240hp engine. The 220a down angle matches perfectly to our 10 degree shaft …

      Started by:  dvm004


      5 Replies
      April 25, 2019 at 3:20 pm Hi Rob, yes the shaft slid back from the original location. The nice wrap of braided line, looks like 50lb jbraid, is closer to where shaft sat. I will watch my clearances for the exhaust, the front of the volvo sat significantly higher than the trans due to the in line install. I am hoping to remedy this with the offset zf. This is a pic with volvo/velvet drive gone. Attachments:You must be logged in to access attached files.

      Last Post by:  dvm004 posted: 1 month ago

    • zf 280 1A gear oil

      This topic has 12 replies, has 5 voices, and was last updated by Tony Athens 2 months ago

      April 16, 2019 at 6:16 am I have to change the gear oil in my ZF 280-1A transmissions. Can I use Shell Rotella T-1 30w or should I use a 30 weight non detergent? I am also open to any suggestions that may be a better choice. Thank you

      Started by:  Dave schmitt


      12 Replies
      April 18, 2019 at 7:21 pm “SQUARE” or flat with no chamfer so you get full contact on the thin aluminum hex area or surface.. A very simple job–just let the socket “float” on a belt sander platten…….. Tony Tony Athens Seaboard Founder Go here for the latest stuff we put together and share for all to see: https://www.sbmar.com/tonys-tips/

      Last Post by:  Tony Athens posted: 2 months ago

    • trolling valve ?

      This topic has 2 replies, has 2 voices, and was last updated by joelhenkel 2 months ago

      March 27, 2019 at 2:42 pm Hi I was curious as to adjusting the speed with the trolling valve. I have a ZF 280 attached to a 6cta 8.3 and trolling valve and would like to slow the trolling speed. Im running about 3 knots at idle but would like to be closer to 2. I have good guages and tools but unsure about adjusting, if even possible.

      Started by:  joelhenkel


      2 Replies
      April 18, 2019 at 11:57 am I have been trying to figure out exactly how the valve # ZF 3217108024 works. It seems to a fixed pressure reduction. Is there any paper work on these valves? Attachments:You must be logged in to access attached files.

      Last Post by:  joelhenkel posted: 2 months ago

    • Vibration on a drivetrain between 1100 and 1600rpm

      This topic has 8 replies, has 3 voices, and was last updated by jean-marc tardif 2 months ago

      March 30, 2019 at 12:34 pm I just bought a 2004 42ft with twin 6cta, zf 2801-v transmissions. I have launch the boat yesterday and I can feel a vibration. Between 1100 and 1600 rpm, When the rpm is in the vibration range I can see the engine shacking a little bit more than the other side. Before launch I haven’t took measurement of the shaft but the Prop look good, no bend or dent. Is there a pro here that could help me how to diagnose this? Boat is in the water prese…

      Started by:  jean-marc tardif


      8 Replies
      April 1, 2019 at 3:21 am It’s shaped like a rust mushroom, exhaust was leaking sea water right on it. I’ll replace both on my next trip to the boat

      Last Post by:  jean-marc tardif posted: 2 months ago

    • How to test ZF marine electric shift solenoid

      This topic has 3 replies, has 4 voices, and was last updated by Luke Nelson 2 months ago

      March 22, 2019 at 8:01 am I am wanting to know how to test the electric shift still solenoid to see if it’s bad. I know you can manually engage them by pushing and twisting the red end which I have done and as I was testing one it stopped engaging my forward gear. It worked several times and then stopped working… So I’m wondering if it is now stuck inside somehow and if so how can you unstick one? Attachments:You must be logged in to access attached files.

      Started by:  Keith Kochner


      3 Replies
      March 25, 2019 at 4:29 pm I may have had a similar issue but was never sure. On the 4th reassembly of the shift block I got the full 24 bar pressure the previous 3 only gave 10 bar. This was after swapping gear boxes after a clutch pack was cooked. We believe it could have been in the shuttle valve at the rear of the block as they were almost impossible to get out. It turned out someone found a new take off, we replace the entire block as no one could give a good answer…

      Last Post by:  Luke Nelson posted: 2 months ago

    • hydraulic PTO on ZF-63A

      This topic has 3 replies, has 2 voices, and was last updated by Tony Athens 3 months ago

      March 5, 2019 at 5:17 am I am interested in mounting a small hydraulic pump on the back of a ZF-63 gear, never seen a PTO on these gears and curious if it can be done. Also interested in the maximum power one could draw from a PTO on a ZF 63. Thanks, JW

      Started by:  Jerry White


      3 Replies
      March 8, 2019 at 7:58 am Yes, 1:1 and rotates CCW looking at the PTO, meaning you need a CW pump. Remember, it’s a live PTO so if you got that direction, your system must be designed to accommodate that. 8 GPM at idle speeds is a VERY BIG pump for an SAE A pad.. 8 GPM at 1200 RPM ( where most pumps are rated), may be doable. It’s $700 kit, but looks like something that should be more like 50% of that.. . Tony Tony Athens Seaboard Founder Go here for the …

      Last Post by:  Tony Athens posted: 3 months ago

    • QSC 8.3 500 and ZF280-1A Tourque?

      This topic has 13 replies, has 4 voices, and was last updated by Tony Athens 4 months ago

      January 14, 2019 at 5:32 am New here but not to boating and hoping for some help. I am researching my next boat and found a 46″ boat with these engines and gearboxes however looking at the spec sheets the gearbox seems to not handle the max torque of the engine. I am reading max allowed torque on the gearbox is 1100 Nm and the engine deliver up to 1700 Nm. Is this as bad as it looks or is there something to this that I am missing? Looking for my next boat.

      Started by:  Michael Jungvid


      13 Replies
      January 24, 2019 at 5:58 pm Tell the broker to send some really good pictures of the engine, the gear, the exhaust, the aftercooler and everything else in the engine room so I can see what you are dealing with.. Throw in the helm station(s) too.. He needs to earn his keep.. If you are even considering a purchase of a vessel “remotely” without this most basic info (very good pictures of the mechanical equipment and all of the sub-systems) in front of you,…

      Last Post by:  Tony Athens posted: 4 months ago

    • Twin Disc MG 5050SC oil leak

      This topic has 4 replies, has 2 voices, and was last updated by Tony Athens 4 months ago

      October 15, 2018 at 7:01 pm I have a twin disc MG 5050SC attached to a Cummins 270B in a Nordic Tug. The transmission has been in service for 13 years/3000 hours, and recently developed a leak/small drip from the gasket between the oil pump and the transmission. I have replaced the gasket without effect, even trying various gasket sealers. The leak appears to occur, or get worse, when the transmission is engaged. There is no evidence of cracking on the pump or transmis…

      Started by:  Peter Abbott


      4 Replies
      January 20, 2019 at 8:36 pm Peter, Glad you stuck with it & followed thru…………………………..I’m especially glad all is solved.. YA DONE A VERY GOOD JOB! Tony Tony Athens Seaboard Founder Go here for the latest stuff we put together and share for all to see: https://www.sbmar.com/tonys-tips/

      Last Post by:  Tony Athens posted: 4 months ago

    • eb15 solenoid plug

      This topic has 1 reply, has 2 voices, and was last updated by Philip 5 months ago

      January 10, 2019 at 2:19 pm i have thorougly checked through your website but still can find a plug/cap with built in wires for the eb15 solenoid. please see posted picture. the plug i found does not have wires. Attachments:You must be logged in to access attached files.

      Started by:  jalopez


      1 Reply
      January 10, 2019 at 3:43 pm Try this Home » Seaboard Marine Store » Marine Transmission Parts & Documentation » ZF Electronic Shift Solenoid Wire Plug/Cap https://www.sbmar.com/product/zf-electronic-shift-solenoid-wire-cap/

      Last Post by:  Philip posted: 5 months ago

    • Location of pressure sensor?

      This topic has 7 replies, has 3 voices, and was last updated by Rob Schepis 5 months ago

      December 21, 2018 at 3:38 pm I have a Twin disc 506 gear, bought the sensor and gauge (thanks Cory!), ran the wires, ready to install. what’s the best location for the sensor? Thank you!

      Started by:  donald roth


      7 Replies
      January 8, 2019 at 6:42 am donald roth wrote: Do you mean that the venerable Rector Seal #5 is not up to this task? Thanks for the headsup, I don’t need any transmission leaks! Yea, for this high pressure small thread assembly the RS can leak. If the switch ever needs to come out even with the JB weld a 12mm wrench will break the connection and back the switch right out. Rob "Luck is the residue of good design." Attachments:You must be logged in to access attached files.

      Last Post by:  Rob Schepis posted: 5 months ago

    • zf solenoid wire plug

      This topic has 1 reply, has 2 voices, and was last updated by Tony Athens 5 months ago

      January 6, 2019 at 3:46 pm where can i find a zf electronic shift solenoid wire plug with built-in wires for the eb15 solenoid? Attachments:You must be logged in to access attached files.

      Started by:  jalopez


      1 Reply
      January 6, 2019 at 6:21 pm Lots of stuff on this site.. Just tell me EXACTLY what part you want.. We have it all.. https://www.sbmar.com/articles/zf-shift-solenoid/ Tony Tony Athens Seaboard Founder Go here for the latest stuff we put together and share for all to see: https://www.sbmar.com/tonys-tips/ Attachments:You must be logged in to access attached files.

      Last Post by:  Tony Athens posted: 5 months ago

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