Viewing 20 topics - 1 through 20 (of 306 total)
    • Cummins Marine Forum Topics
    • ZF Transmission Noise in Gear at Idle Speed

      This topic has 8 replies, has 6 voices, and was last updated byKraig Kirby 5 days ago

      June 19, 2023 at 5:06 am We’ve got a 2010 Sundancer with QSB425 and ZF V-Drive transmissions, ZF 85 IV,Ā  a noticeable noise started happening when in gear at idle and I’m looking for help with ideas of the cause.Ā  I checked fluid levels, temps and pressures at speed and all seem to be normal and the port transmission has no noise.Ā  The serial number on the unit is 30803-S.Ā  I’ve got a video I’m trying to reduce file size to load, thank you in adv…

      Started by: Kraig Kirby


      8 Replies
      January 13, 2025 at 5:53 am I spent significant time and effort and wish I could tell you what finally resolved the issue.Ā  I changed filters, fluids, I ran borescope down to look at condition of all gears, I pulled the boat and checked prop runout.Ā  Upon doing all of that after a good 30minute run when pulling throttles back the noise was gone.Ā  I’ve sampled fluid multiple times before, during and since and nothing has changed or thrown a flag.

      Last Post by: Kraig Kirby posted: 5 days ago

    • ZF220A Gear oil Brand.

      This topic has 6 replies, has 4 voices, and was last updated byMike Uliasz 1 week ago

      December 22, 2024 at 8:57 am I have looked at manuals, forums, posts and attempted to understand API specs, etc, etc. The answers are ALL OVER THE PLACE. I just want to get a safe product to use. I use my boat in Southwest Florida, so I am thinking SAE 40 (but happy to use SAE 30) oil for my ZF 220A transmissions W/O trolling gears. 2 Questions: Is 40 wt. ok for where I live? Hot most of the time in SWFLA. Which specific Product/Brand should I consider?

      Started by: Jim D


      6 Replies
      January 6, 2025 at 10:48 am Quick question regarding oil for ZF 220A transmissions, would LIQUI Moly marine 4T 25W-40 work?Ā  Boat run in Virginia, Chesapeake bay. Have some extra 6 liter cases from a miss delivery at the marina. Thanks Mike Uliasz

      Last Post by: Mike Uliasz posted: 1 week ago

    • Help needed for ZF280-1A Electronic Troll valve

      This topic has 9 replies, has 3 voices, and was last updated byMike 2 weeks ago

      January 3, 2025 at 3:30 pm This has been a problem that I have not been able to solve. I’ve got twin Yanmar 6LY2A-STP engines with ZF 280-1A transmissions. Dual helms with Teleflex electronic control heads to port and starboard ECU’s. Both transmissions have electronic troll valves. The port troll valve works correctly for both the minimum and maximum troll speeds. The starboard side does not work correctly for the minimum troll speed, the maximum speed seems …

      Started by: Mike


      9 Replies
      January 4, 2025 at 3:18 pm Thank you, good information here. My boat is moored about 4 hours away and this time of year I only get over there about once a month. On my next trip over to the boat I will first verify the troll unit is receiving the correct milliamps. If the milliamps is correct then I’ll swap the troll units and report back here. I’m still a little uncertain of the correct way to accurately measure the milliamps at the solenoid/coil & cap bu…

      Last Post by: Mike posted: 2 weeks ago

    • High Copper Level In ZF Gearbox During Oil analysis for Purchase

      This topic has 1 reply, has 2 voices, and was last updated byTony Athens 2 months ago

      October 29, 2024 at 11:37 am I am in the process of trying to acquire 2019 Azimut 60 ft Flybridge with twin Volvos and ZF 335-A Transmissions. Starboard Transmission showed Severe levels of Copper (174) and Potassium Level Higher than typical. Report states “Suspect Clutch/Disc Pack Damage”. Same for Port Transmission except level of copper was 114 which they labeled as Abnormal but also suspected Clutch/Disc Pack Damage. Should I be overly concerned with this f…

      Started by: s.slaton


      1 Reply
      October 30, 2024 at 6:08 am 1————–99% of the time,Ā  a random oil same is close to meaningless–   2—————-If you DO NOT look at the oil samples, any operation transmission SYMPTOMS ??   3———-Does the vessel have any type of trolling system or slow operation system that is controlled on theĀ  shifting controls?   4—————Dip the dip stick in the gear a…

      Last Post by: Tony Athens posted: 2 months ago

    • QSM11 + ZF 325-1 COUNTERENGINEWISE question

      This topic has 1 reply, has 2 voices, and was last updated byTony Athens 2 months ago

      October 11, 2024 at 2:55 pm Hi, we buy used boat with a lot of troubles:)Ā  2 x QSM11 and 2 x ZF 325-1 gearbox and EB31 + Kobelt 6503 – Mighty Mariner System Electronic Interface and 6509 – Integrated Electronic Control Head and we have a problem, all electonics working fine from KOBELT to engine and gearbox… but QSM11 both counter CLOCKWISE rotation. PORT side ZF 325-1 need to be working ENGINEWISE rotation, working ok, but not sure it’s fine, Forwa…

      Started by: acidburnsb


      1 Reply
      October 30, 2024 at 5:48 am 1————-All engines turn the same rotationĀ  CCW when looking at the flywheel or CW when looking at the front front engineĀ  damper 2———–Counter-rotation of the PROPELLER is done with the transmission 3———–At the dock, vessel secured safely,Ā  ONE engine at a time—Put each one in reverse ( or fwd) for a second or two WATCH the shaft rotation   REPORT what you observe. …

      Last Post by: Tony Athens posted: 2 months ago

    • ZF 80-85A (220a) trolling valve accidentally flipped lever

      This topic has 3 replies, has 2 voices, and was last updated byTyrel Daniel Ritchie 2 months ago

      October 20, 2024 at 8:47 pm Hey guys, I just bought a bayliner 4087 with twin 6btas. They are recently rebuilt (2021) and they both have trolling valves. My dad and I are in the process of changing the actuator cables on the trolling valves. On the starboard engine, the cable was removed and I had a tape measure and I was trying to see how much throw the new cable would need to properly actuate the trolling valve. In doing so i flipped the trolling valve control right over…

      Started by: Tyrel Daniel Ritchie


      3 Replies
      October 28, 2024 at 12:56 pm Tony,   The trolling valve picture you supplied with the “we want 3.5 here” is that with the extension piece I have seen you add on or not? I am in the proccess of ordering these micro adjust cables and they are only showing them with a max 3” travel. obviously with an extension piece they would require more. Are you running 4” travel cables? are you recommending microadjust (vernier style) control ends? where do you…

      Last Post by: Tyrel Daniel Ritchie posted: 2 months ago

    • ZF 220 pump outlet fitting O-ring size

      This topic has 2 replies, has 2 voices, and was last updated byCG Weinert 3 months ago

      September 28, 2024 at 3:21 pm Hello! Had the outlet hose of our ZF 220 (ser #20091209, parts list 3205002008) off last fall to mess around with PTO pump plumbing, re-installed with existing outlet hose o-ring and it has been weeping all summer. Bad policy, I knew better and was up against the launch date. Research on the mystery fitting at the pump outlet seems to suggest it is a ‘special’ ZF item, per Tony’s post from 2014 on Downeast boat forum.Ā  The fitt…

      Started by: CG Weinert


      2 Replies
      September 30, 2024 at 4:36 am Thank you for the considered reply, Tony. 14 x 2.5 o-ring was perfect – a bit proud of the external spacer washer, may 0.5 mm, tightened it up, no more leaks. Best, CG  

      Last Post by: CG Weinert posted: 3 months ago

    • Twin Disc MG5055A weeping around control linkage

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

      August 8, 2024 at 9:11 pm After servicing the 2003 6BTAs, we also changed the transmission fluid and cleaned the strainers.Ā  One of the strainers had a small metal chip in it, the other was fine.Ā  Probably never had much service done in last 10 years so overall felt good about it. Changed the oil to SAE 30 as specified (which btw is extremely hard to read the level it’s so clean).Ā  Ā When running now I see some weeping around this control linkage.Ā  It looks sort of …

      Started by: Zac Schramm


      1 Reply
      August 10, 2024 at 1:40 pm Yes————-probably from rust–maybe just cleaning and new o-ring with grease will fix it Looks like you clean all initially, two small bolts and see what you have–Does not look scary at all The lever may be part of the relief valve, so it may be under spring tension when you remove it.. Seaboard Founder Go here for the latest stuff we put together and share for all to see:

      Last Post by: Tony Athens posted: 5 months ago

    • 4BT bell housing.

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

      August 9, 2024 at 4:56 pm Does the Cummins 4BT have a style bell housing that can except a Borg Warner velvet drive? Thanks Jeff

      Started by: bajajeff50


      1 Reply
      August 10, 2024 at 1:30 pm 100% yes—————————- but with any transmission, you need the proper adapters & torsionally coupling All this info is on the website Seaboard Founder Go here for the latest stuff we put together and share for all to see:

      Last Post by: Tony Athens posted: 5 months ago

    • ZF 280 Mechanical Trolling Valve Install

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

      August 10, 2024 at 8:16 am Hello!   Iā€™ve been following Tony Athens for years. I am purchasing a 2002 Pursuit 3800 with ZF 280 gears. I am ordering mechanical valves from Tony this week. Looking for any install advice above and beyond what is shown on Tonyā€™s site. Also, what vernier cable heads and cables does everyone recommend? Stay tuned!  

      Started by: adam-7240


      1 Reply
      August 10, 2024 at 1:22 pm Google Vernier cable- Hit images.. Attached is our preferred style Seaboard Founder Go here for the latest stuff we put together and share for all to see:

      Last Post by: Tony Athens posted: 5 months ago

    • Low pressure in fwd, normal in reverse

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

      August 5, 2024 at 7:55 pm Hi I have 2 zf 280a-1 2:1 ratio in a 2006 Rampage with Cat displays where I get my transmission pressure and temp from A week ago I noticed the pressure on one engine was 130psi, normally they are in the 330ā€s. I checked the oil and it seemed fine, but I added about a half gallon more. Restarted engine and pressure went up to normal. Upon slowing down the pressure began to drop to 130psi. I have changed the oil and cleaned the filter screens and…

      Started by: flafisher13


      1 Reply
      August 7, 2024 at 4:40 pm Pressures need to ne be checked w/ decent quality mechanical gages 1st .. Both at idle to 1000 , and then above 1000 / 1200 RPM Seaboard Founder Go here for the latest stuff we put together and share for all to see:

      Last Post by: Tony Athens posted: 5 months ago

    • ZF 1960 (BW196) Suspect fwd clutch / Low pressure at idle

      This topic has 3 replies, has 2 voices, and was last updated byTony Athens 5 months ago

      July 26, 2024 at 12:59 pm I have a 65 Hatteras convertible that has CAT 3412E and BW196 transmissions with Sturdy Electronic Controls including trolling valves. The engines have 1600 hours on them, of which I put on 400 easy hours over the last 2 years.Ā  I have recently noticed a slower engagement on the port engine going into forward.Ā  Ā The Clutch pressure is normal at idle, 135 psi, and over 700 rpm at 310psi.Ā  Reverse is exactly normal quickly jumping to 300 psi even …

      Started by: Michael J. Tate


      3 Replies
      July 30, 2024 at 5:49 am Sounds like you have a solid understandings and a plan. San Diego– NADA Kentucky–Yes–That’s is where all my gears go Seaboard Founder Go here for the latest stuff we put together and share for all to see:

      Last Post by: Tony Athens posted: 5 months ago

    • Oil change ZF85A

      This topic has 1 reply, has 2 voices, and was last updated byJohn 7 months ago

      June 6, 2024 at 1:33 pm For the first time I am going to change the filter of my zf85a I removed the oil drain by unscrewing the bolt underneath. On the other hand, you might find this a stupid question, but where should I fill with the new 430 oil? If I put it where the filter is, nothing flows after very little, it’s full. Tks lot for your help John

      Started by: John


      1 Reply
      June 6, 2024 at 5:50 pm Did you get 5’ish quarts out? You should fill in the filter opening so odd you can’t, hence your post I guess.

      Last Post by: John posted: 7 months ago

    • ZF RM50P3 (ZF50)

      This topic has 1 reply, has 1 voices, and was last updated byLuke Taylor 7 months ago

      May 24, 2024 at 11:22 pm Hello, I have a ZF RM50P3 (ZF50) gearbox and want to connect an oil pressure sensor and gauge to it to monitor the pressures. First question is does anyone have a manual for this gearbox and secondly where would I connect the sensor for the gauge Regards, Luke    

      Started by: Luke Taylor


      1 Reply
      May 25, 2024 at 5:53 am The transmission is actually an IRM50P3 – the “I” wasn’t that visible. It obviously has an internal pump. There are 2 x 1/8 NTP ports (which are clearly visible) which I connected a 0-400 PSI sender and gauge to with no pressure showing in idle or in gear. I am also pretty sure the transmission cooler system is low pressure. Ā I have since found am image of another box online (see attached) and it seems there are 2 other 1…

      Last Post by: Luke Taylor posted: 7 months ago

    • ZF 220 housing crack

      This topic has 2 replies, has 2 voices, and was last updated byPeter McKibbin 8 months ago

      April 23, 2024 at 6:56 pm ZF 220 A gearboxes were pulled apart for bearing and seal replacement while the engines were rebuilt and an internal crack was noted in one of the housings, refer attached photos. It appears that the crack has propagated from a pilot pressure hole, does anyone have a flow diagram for the ZF 220 so I can figure out what caused the crack. I am thinking of using a rotary burr to open up the crack and TIG welding it back together then redrilling the…

      Started by: Peter McKibbin


      2 Replies
      April 25, 2024 at 1:23 am Will be back at the boat next week Tony, will snap some high rez pics and post them. Am wondering what regulates the high pressure that the gearbox uses to lower pressure for bearing lubrication.  

      Last Post by: Peter McKibbin posted: 8 months ago

    • ZF Hurth tag missing

      This topic has 2 replies, has 2 voices, and was last updated byFourWinnsMike 9 months ago

      March 25, 2024 at 7:38 am If the tag is missing from my transmission, how would someone tell what model V-Drive I have. Ā It is bolted to the following spec Cummins.Ā  Model: 6BTA5.9.M2 Serial:4483T453 HP: 300HP Is there a certain profile. Ā I ask because I need a new coupler and I want to make sure I order the correct model for my transmission. Ā  The shaft size is 1.5″ I can post pictures later today. Thanks.~Mike

      Started by: FourWinnsMike


      2 Replies
      March 25, 2024 at 7:22 pm Yes, it does have ATF. Ā Thanks Rob!!!

      Last Post by: FourWinnsMike posted: 9 months ago

    • Hurth HSW 630V1 Trolling Valve

      This topic has 1 reply, has 1 voices, and was last updated byJon Fairbrother 10 months ago

      February 29, 2024 at 12:29 pm Hello, does anyone know the correct part number for a Hurth HSW 630V1 trolling valve? (behind a 6BTA-M2-250HP) I understand ZF 63 is a similar transmission which I have found trolling valve part number ZF 331299009, can anyone confirm if that is compatible with my transmissions?

      Started by: Jon Fairbrother


      1 Reply
      March 1, 2024 at 4:44 pm For anyone else that is wondering I have confirmed with ZF that Part – 331299009 is indeed the correct part for the Hurth 630V1 and ZF 63IV transmissions.

      Last Post by: Jon Fairbrother posted: 10 months ago

    • ZF 325 no forward gear

      This topic has 1 reply, has 2 voices, and was last updated byTony Athens 11 months ago

      January 30, 2024 at 11:50 am Hello I’m pretty stuck and looking for advice. I have a gianetti 58 with twin cummins qsm 11 coupled to zf325 a1 gearbox.Ā  The port engine is giving me some trouble. It was working normally, until one of the hydraulic lines to the oil cooler (rusted at the coupling) and leaked the fluid out. At which point I had no forward or reverse. I replaced the hose, filter and refilled and now I have reverse but no forward. When in neutral the shaft …

      Started by: charlie beckett


      1 Reply
      January 30, 2024 at 5:52 pm Post clear pics of all–all angles/perspectives–stay back about 2 ft. Seaboard Founder Go here for the latest stuff we put together and share for all to see:

      Last Post by: Tony Athens posted: 11 months ago

    • Why two drains for ZF IRM280A.2

      This topic has 1 reply, has 2 voices, and was last updated byTony Athens 1 year ago

      January 9, 2024 at 12:51 pm I recently purchased a boat with twin CTA8.3-M3 engines coupled to ZF IRM280A.2 transmissions.Ā  The boat is equipped with an oil changer and when I started to service the transmissions, I was surprised to find that the lines are not connected to the transmissions.Ā  There are two drain plugs at the bottom of the transmissions.Ā  Do both need to be pulled to drain it properly or can either one be used? I saw on another post where these plugs are a …

      Started by: dwitte58


      1 Reply
      January 11, 2024 at 5:05 pm Use one side or the other.. Pic attached.. It’s a standard Metric adapter.   Seaboard Founder Go here for the latest stuff we put together and share for all to see:

      Last Post by: Tony Athens posted: 1 year ago

    • flying buttress bearing change

      This topic has 2 replies, has 3 voices, and was last updated byJohn 1 year ago

      December 5, 2023 at 2:48 am Hello everyone, i write from spain! i recently buy an alpa 34fly with 2 6bta 1994 315hp and HSW800 V1 gearbox. i need to change the flying butress bearings( i have used google translate..), what is the easier way to do it, remove the shaf, or only the propeller? if i need remove the shaf, how can i do it? thanks!

      Started by: tarenaldo


      2 Replies
      December 10, 2023 at 5:25 am No idea what that is but if it’s the cutlass bearing like Rob mentioned, get the right size tool from “Strut Pro” and be done with it. Ā Pretty easy to use. Ā Several vides on how it works. Good luck, J

      Last Post by: John posted: 1 year ago

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