Very nice video. Nice and complete info but I still have a question for you. I'm on a sailboat with a Perkins 4.236 and have just had my nozzles done but I've since sailed on from the island where I had this done and I am now in a very "middle-of-nowhere" sort of place. Now I see that two of the injectors are leaking from the adjuster nut cap. I am pretty sure the shop did not replace the copper sealing washers on those. After watching your video, it seems I can attempt to fix this in the field. My question to you: Am I correct that there should be no harm done to the injector or the "pop" setting if I remove the injectors and torque down on the adjuster nut cap to 50psi as you did in the video in hopes to create a seal? I remember the man at the injector shop being very clear (although in a language I speak poorly!), not to touch the torque on the caps or the nozzle nut...but I think I trust you more.🙂
@dhcrouchmarineltd30496 күн бұрын
The caps/nuts are just a loose thread and bite into the copper. Provided you dont drag the setting screw back you'll be fine. Use a blow torch to reanneal the copper or better still replace them. Check the faces of each surface as this stuff is getting very old. You may have to lap out some pitting. Use a new oil stone very fine if you need. Be sure its flat hence new.
@strongmonty3 күн бұрын
What are the odds that I could drag the set screw as you stated, assuming I'm just setting the adjuster nut cap to 50psi? Is this a real risk, and thus proper protocol to recheck all of the pop settings after the adjuster nut cap has been torqued down?
@dhcrouchmarineltd30493 күн бұрын
@@strongmonty Its a screw. Probably unlikely but vey possible.
@benjamindusseau491210 күн бұрын
how did you change the timing?
@dhcrouchmarineltd304910 күн бұрын
Its a CAV pump. Just loosen the body nuts to the engine and slaken the injection hoses and twist it one way or another advance or retard its timing. There is more to it but thats basically it.
@ihbntaj22 күн бұрын
Hi, we have this gearbox and we hear a noticeable clunk when selecting forward gear from neutral. The oil level is fine and the ATF oil has been replaced during the time we have had it. At first I suspected a drive plate issue but if it only happens selecting fwd I am now doubting my initial thoughts. Any suggestions? Thanks in anticipation.
@dhcrouchmarineltd304922 күн бұрын
Loud clunking, depends how loud. If the drive plate is trashed and someone over advanced the idle then the box will thump into gear. The idle needs to be low for a smooth engagement. That being said if the cone has any burrs itll bind a bit.
@KeyboardWorrier25 күн бұрын
Great completion! Was the exhaust silencer a particular type/brand?
@dhcrouchmarineltd304925 күн бұрын
Was manufactured by the Hayden's I believe. It allowed cleaning and access into the wadding.
@gavinralph291027 күн бұрын
I gave up buying fuel from boat yards, I now only buy from roadside filling stations, the fuel is clean, water free (probably because its not been hanging around in a tank next to the river!....cured all my fueling issues. Yes its a pain filling with jerry cans but better than stripping down the injection system every other season.
@dhcrouchmarineltd304927 күн бұрын
What engine do you have? Some can use. HVO is now quite handy to try!
@davidelliott5843Ай бұрын
Dual mass flywheels are used to reduce torque vibration into the gearbox. Should not be needed on a boat.
@dhcrouchmarineltd3049Ай бұрын
Agreed.
@davidelliott5843Ай бұрын
Look at the Fiat JTD twin cam diesels. Hydraulic tappets and the timing belt versions are easy to work on.
@patrickg.6438Ай бұрын
I bought a pair of motors that have the Hurth model HSW 450 A2-2,0 ser n 22 15223 A they have been sitting for years from what I was told they were took out of a boat after 20 to 40 hours run time and replaced because the owner wanted more power what do I need to do to make sure there ready to be used again I have manuals on them but I’m wondering about the seals or gaskets effect of stagnant fluid or no fluid on them
@dhcrouchmarineltd3049Ай бұрын
If I was called to inspect them I would drain the fluid (if any) and check inside with an endoscope. Try to gauge the state of play inside each box. If they are not on the engine then check the seals isnt hard. If they are crispy then definitely change them. All depends whats found. Do they spin by hand, engage each direction and see if there is any binding. Hope that helps a little
@patrickg.6438Ай бұрын
Thankyou there still on the motor I just got them I was planning on rebuilding the motors this helps me out it’s really hard to find any information on these transmissions I have a original service manual for them but that don’t cover sitting in a barn for 20 plus years and I had no knowledge of inner working until I found your video many thanks for sharing your experience and knowledge I can use all the help I can get this is my first complete boat rebuild it’s a 79 pen yan 24 footer and the only thing it has going for it is a fiberglass hull
@dhcrouchmarineltd3049Ай бұрын
@@patrickg.6438 bear in mind what ever transmission you use will define the physical installation. Changing that later to suit another brand will cause you a head ache. Be cautious and work with equipment you can get parts support easily. Thats my advice anyway.
@patrickg.6438Ай бұрын
What would you suggest I do should I sell them and buy new to me ? the motor in it now is a Chrysler 240 that was run in salt water completely ruined the Chevy 350 vortecs multi port fuel injection I have now are 89 threw 94 models can’t find any more info than that on them but they are very buildable motors I have to gut the hole boat and was going to do some reinforcement with carbon fiber so mounting should not be a problem I got this to have a project with my grandkids who lost both mother and father a few years back and would like to pass it down to them what would you suggest I do and how would I reseal the shaft where it passes threw the hull for the prop and I was thinking about saving up to buy a Sharrow prop do you have any comments on that type of prop
@patrickg.643828 күн бұрын
Yes full of ATF looks like it was pored just today and looks brand new inside we are going to remove them this weekend sorry had to wait for the kids to help all or none do you have a P account would like to buy you a drink
@tyros720Ай бұрын
I had one in a fiesta van, good economy £10 per 100 miles back in the day
@dhcrouchmarineltd3049Ай бұрын
Yes my father had the same. Swore by it.
@cruiseryevАй бұрын
Love your videos? Have you have come across a Leyland thornycoft 230? Have one of these in boat in Australia.
@dhcrouchmarineltd3049Ай бұрын
No not yet as far as I am aware.
@xander9460Ай бұрын
Thank you for the great explanation. I'm an inland schipper. And they just don't teach this anymore.
@zenaasura1769Ай бұрын
Hahahhahaaa tesco propeller!!😂😂😂🤦♀️ im sure some ppl would try to get one if tescos would sell it.
@dhcrouchmarineltd3049Ай бұрын
Lol
@KevDYADАй бұрын
Very informative, I've just bought a boat with a RN DM2 engine and PRM160D2 box.
@dhcrouchmarineltd3049Ай бұрын
Exciting stuff then
@mymobile5014Ай бұрын
Do you realise that at about 9 minutes in, I can't hear a word you're saying for that awful music?
@dhcrouchmarineltd3049Ай бұрын
Yup. Thanks.
@russellgadbury364Ай бұрын
Nice video explaining the process clearly with plenty of helpful tips! :)
@andrewdoble7973Ай бұрын
What’s the drop in replacement?
@dhcrouchmarineltd3049Ай бұрын
What do you mean. As in an alternative engine system?
@andrewdoble7973Ай бұрын
He said they are throw away gear boxes. What is the drop in replacement
@dhcrouchmarineltd3049Ай бұрын
@@andrewdoble7973 I see. Nothing is exact but the PRM 120 / 125 use the same mount registration pattern. You have to realign the engine. Technodrive again use the same mount registration pattern. Again a slight remount and alignment. The PRM Hydraulic box the 150 fits but again you'll have to realign the engine and add an oil cooler for this. This is an example and for guidance only.
@pawesobkowiak9100Ай бұрын
Good morning.I have bought a Norwegian Moda Tur 24 boat with a BMC 1800 engine.I will not sail until next year.How much can such an engine burn diesel per hour.The boat is 2000 kg.
@dhcrouchmarineltd3049Ай бұрын
That is a difficult question to ask. My advice is join BMC engines page on Facebook as there are so many variables to this.
@pawesobkowiak9100Ай бұрын
Dzień dobry.Mam łódź Norweską Moda Tur 24 z takim silnikiem BMC Mariner Commander. 1800 cm.Łódź waży 2000 kg. Pływać na niej będę dopiero w przyszłym roku.Putanie moje ile taki silnik pali diesla? Dziękuję i pozdrawiam.
@pawesobkowiak9100Ай бұрын
Witan.Mam pytanie.Ile zużywa disla taki silnik na godzinę pracy ?
@dhcrouchmarineltd3049Ай бұрын
That can vary immensely, what type of craft is it in, what sort of waters do you work, weight of craft, hull type, gearbox ratio and propeller dimensions, shaft length.
@pawesobkowiak9100Ай бұрын
Dzień dobry . Kupiłem jednostkę pływającą Joda Tur 24 z silnikiem DMC 1800 m3.Nie mogę znaleźć żadnych informacji na temat tego silnika .Najwięcej dowiedziałem się na filmach z KZfaq.Znajomi mają silniki Yanmar lub Volvo Penta.Ja jestem z Polski i tu raczej nie spotyka się takich silników BMC Commander.Nie jestem w stanie odpowiedzieć na Pana pytanie bo nie znam się na tym.Prosze podać mi ile może palić taki silnik 1800 m3 w łódce 24 fit. - .7.5 mb waga tej łodzi to 2000 kg.Pozdrawiam.
@jinlee20082 ай бұрын
Hi would this model fit to cummins 260hp 2200rpm marine diesels?
@dhcrouchmarineltd30492 ай бұрын
You can make anything fit anything. But with that much HP it provably try to spit it off the back. Always best check the manual for the Max rated input power for any gearbox.
@adamskidmore47032 ай бұрын
hi wonderfull video.....i had an accident on my canal boat yesterday and the nuts fell out of the gear box causing propshaft to misaligh n and gears to grind to a crunch do you think i need to replace any parts or just bolt back together inplace??
@dhcrouchmarineltd30492 ай бұрын
Please explain further. What bolts fell out, were from? The alignment will most likely need to be checked
@johntarling10772 ай бұрын
How can I remove the output shaft bearing without splitting the gear box..
@dhcrouchmarineltd30492 ай бұрын
You cant. The output flange is part of the shaft and held in place by the rear bearing. You have to split it. Check the exploded diagram in the manual.
@stevehunt21152 ай бұрын
great video thanks. I have the same gearbox on my boat and I'm wanting to install the MT5036 oil pressure gauge to be able to monitor the pressure as part of my routine checks - could you tell me where it should be connected to the gearbox as its not specified in the manual - thanks
@fernandoi33893 ай бұрын
The forward gear in our marine box was slipping off , we removed and opened it we where very confused on how it worked ( we expected something like sync rings like in a car manual gearbox ) and everything looked fine until I found your video ( the bronze clutch looks exaclty as your worned one ) . Thanks for your video It helped us a lot
@dhcrouchmarineltd30493 ай бұрын
Glad it helped. Very repairable boxes good luck
@josedomingoaraujo80143 ай бұрын
Saludos desde Trujillo Venezuela.. la bomba de inyección que tienes en la meza es de gobernador hidráulico?? Quiero saber ,cuál es el número de los empaque de repuesto 🤔
@dhcrouchmarineltd30493 ай бұрын
Hello for old blighty, not sure I understand you. There isnt an injection pump here. Only injectors and my bench top test rig. Have I missed something?
@philrunwater87333 ай бұрын
Excellent tuition.
@deckerbob3 ай бұрын
Well done 👍
@CapnCody16223 ай бұрын
What do you call that black vertical press thing? Is it required in order to remove and reinstall the shaft?
@dhcrouchmarineltd30493 ай бұрын
That is a hydraulic puller, the bearing is pressed into the brass cast body. To remove it you need to press it in order to not damage the bearing. Taking a press into the field is unrealistic so I have the hydraulic puller and I make that into a mini press.
@CapnCody16223 ай бұрын
@@dhcrouchmarineltd3049 Great. Thank you!
@anonymousguest92904 ай бұрын
Would you say the thread on the inside of the forged steel housing is durable enough to use a a fine thread nipple as part of a dent puller/slide hammer removal tool? I have two injectors that simply will not come out no matter how I pry on them.
@dhcrouchmarineltd30494 ай бұрын
Hmmmmm, good question. Id say unlikely but what choice do you have. If you take the studs out can you not turn the whole body clockwise, with some lubricant of penetrant oil? These are not modern engines, so not that long an injector. Unless its rusted in. Feel free to send me some images of them. Ill see if i can think of a solution. [email protected] Watsapp 07809607630
@anonymousguest92904 ай бұрын
@@dhcrouchmarineltd3049 Email sent. Thank you.
@gingerbard26074 ай бұрын
Great video, I can now 'see' what's happening inside my Technodrive gearbox. I had an enging rev 'surge' when manouvering at very low speed - it felt as if the input jumped off the forward ourput. Assuming the clutch surfaces aren't worn out am I right in thinking that the clutch can be adjusted by putting an allen key on the selecter barrel/shaft to move the fork?
@dhcrouchmarineltd30494 ай бұрын
No, the selection fork needs the float shimmed. It wont help the clutch bite more. The centrifugal forces of the shaft spin will keep the clutch in drive engaged.
@gingerbard26074 ай бұрын
@@dhcrouchmarineltd3049 Sorry to be pressing you on this but an online manual has this: Clutch control unit adjustment: with the operating lever ref. 18 in neutral position, turn by hand the output flange ref. 26 and, at the same time, screw the adjusting screw ref. 28 with an alien wrench (4 mm) until the output flange rotation gets hard on a small arc only. Unscrew of 3/4 of turn the adjusting screw and fix it by locking the nut ref. 57.
@dhcrouchmarineltd30494 ай бұрын
Yes thats the float depth of the fork. To much in and it binds on the clutch gear. Shimming just keeps it from fowling and jamming on the clutch. So in a sense it is clutch adjustment but not in how the clutch "bites" rather the selection of the clutch cone. Hope that makes sense
@gingerbard26074 ай бұрын
@@dhcrouchmarineltd3049 👍
@theblogfather4 ай бұрын
Thanks for the video. How did you determine the correct distance to press the parts on the shaft?
@dhcrouchmarineltd30494 ай бұрын
The shaft has a ledge that dictates positioning. Once the bearings are against this ledge / shoulder the rest makes sense.
@theblogfather4 ай бұрын
@@dhcrouchmarineltd3049 Oh perfect. Thanks a bunch. Getting ready to do a rebuild on this same pump and this has been helpful.
@johnhalse27794 ай бұрын
Thanks for an informative video. Cheers.
@davidjones-rq2ch4 ай бұрын
Super helpful. Thanks for posting that.
@dhcrouchmarineltd30494 ай бұрын
Thanks for your appreciation.
@drankenkorps4 ай бұрын
Hei, i need to learn something.. saildrives have 2.7 or 2.3 times reduction.. or whatever nm is. Where is reduction.. in knee of saildrive where propeller is or inside gear box.
@dhcrouchmarineltd30494 ай бұрын
The only way to answer that is to ask what sail drive do you have. Propeller size will also make a difference.
@drankenkorps4 ай бұрын
@@dhcrouchmarineltd3049 aaa.. ok I dont have jet.. im calculating to convert to electric motor.. motors that have 16-20k rpm.. which is 5x more rpm than diesel...im studying..before invest.
@James-cr5qx4 ай бұрын
Do you happen to know if I can directly replace a hbw 100 for a zf12? Asap says its the closest thing. My question really is about the dimensions and gearing. Is the gear ratio the same? Will the ratio matter? Also will the adaptor plate fit to my bmc 1500? Will I have to lift or lower the bmc to line it up with the shaft? Any advice is much appreciated as I'm a bit lost..
@dhcrouchmarineltd30494 ай бұрын
If I recall correctly it is a pain and yes you have to re-align everything and pull engine back of shaft forward.
@johnhansen3374 ай бұрын
Great video, nice style and clarity 😃
@user-ce2sk6km2j4 ай бұрын
i'm just rebuilding one now, i managed to press everything onto the shaft ok. i'm just wondering if there is a sequence and torque spec for rebuilding the case?
@dhcrouchmarineltd30494 ай бұрын
Have you got the workshop manual, always refer to the manual for the tolerances and torque sequences.
@dhcrouchmarineltd30494 ай бұрын
Have you got the workshop manual, always refer to the manual for the tolerances and torque sequences.
@markbeard5184 ай бұрын
4.12 you have done it a million times before? wow!
@bborjd4 ай бұрын
Great demonstration of the operation of my boat's transmission. Thank you.
@LeeRenwick-nh7dn5 ай бұрын
Thanks for insight nice to know how they work
@deckerbob5 ай бұрын
Great video 💪🏽
@RoamingFibonacci5 ай бұрын
Legend mate! Do you know a place for parts? My boats been refloated and all oils are cream, Reverse slips and is basically powerless, any revs actually slow it so I'm sure it's glaising Going to flush tomorrow
@dhcrouchmarineltd30495 ай бұрын
Which box is it?
@RoamingFibonacci5 ай бұрын
@@dhcrouchmarineltd3049 same as this one the LH150
@dhcrouchmarineltd30495 ай бұрын
@@RoamingFibonacci if the engine stalls while going into neutral you probably have a stuck ahead cone clutch.
@RoamingFibonacci5 ай бұрын
It had forward drive and neutral l, revers turns very weak like its slipping, it turns a bit gives up a bit... better on lower revs, it does turn a bit but weak in reverse
@RoamingFibonacci5 ай бұрын
It has forward and neutral, Reverse is just slipping and weak
@xaviersargenti36435 ай бұрын
Fab stuff
@johnlohf33965 ай бұрын
Music is too loud
@dhcrouchmarineltd30495 ай бұрын
Yes.
@ThreeFineWonders5 ай бұрын
Thanks for getting this message out there. ‘Consumer’ pressure will be what creates necessary changes. Please keep doing what you’re doing.
@dhcrouchmarineltd30495 ай бұрын
Peoples daily lives are being seriously affected by this. I will do my part
@ThreeFineWonders5 ай бұрын
@@dhcrouchmarineltd3049 Is it inevitable that all engines will suffer the seizing fate? Would regular service of filters and managing fuel tank cleanliness and adding Marine 16 fuel additive mostly mitigate any seizing issues?
@dhcrouchmarineltd30495 ай бұрын
@@ThreeFineWondersProblem is once the engine cools down its too late. This stuff passed through filters. So no to my knowledge nothing stops this stuff. Clean filters is never a bad thing but doesn't seem to solve it. Draining the water separation bowl regularly helps though as this is denser than fuel and sits in the bottom.
@ThreeFineWonders5 ай бұрын
@@dhcrouchmarineltd3049 Is this ‘stuff’, the dark sticky stuff pictured, a new phenomena? Did engineers like yourself not see this in the past? And you’re saying there’s a correlation between these deposits found in fuel and the increased incidence of customers’ seized engine injectors, correct? When finding dark stuff, drawing fuel from the tank bottom, I’d always assumed I was looking at diesel bug. Maybe it’s a mixture of bug and sticky? or are they the same thing?
@dhcrouchmarineltd30495 ай бұрын
@@ThreeFineWonders To my knowledge it is a new problem. It is NOT diesel bug. Thats another issue.
@buttonman62625 ай бұрын
Our gearbox is only a reduction as we have CPP’s but I need to know how a reversing gearbox works for my exam. This has helped, thank you!👌🏻
@dhcrouchmarineltd30495 ай бұрын
Please clarify CPP's Wonder if you mean the system commonly used on a Diesel powered Pinnace. That had a scoop system with a pair of Helm Wheel that caused the scoops direct the crafts propeller thrust. No ruder and no reversing gear at all. My friend had one powered by a BMC Commadore with the ahead gearbox. Bloody thing sank more times than a Submarine but it would with a hole in the side the size of a car. Anyway ot was a laugh. ,
@buttonman62625 ай бұрын
@@dhcrouchmarineltd3049 Sorry I meant Controllable Pitch Propellers. Not heard of a scoop system before, I’ll have to look it up.
@stephenauty24025 ай бұрын
Brilliant tutorial on how these work..just in the process of rebuilding a TMC 40 from a Beta 10. Is it possible to measure the thickness of the friction material on a used clutch cone thingy?
@dhcrouchmarineltd30495 ай бұрын
I would get a new clutch and compare the average over an area. I dont think its states it in the book. That being said I am sure something like 1.6mm springs to mind. The friction material is supposed to suspend oil while the clutch is working. But to gauge wear factor best guess is all I have to say atm. Typically you can tell if one is ok or not. Clutch plates are a bit easier to asses as they either warp or grind to death. I had a clutch I changed recently from a PRM 120 that showed dead spots in a band around the clutch. The friction coating was falling off. Hope that helps.
@stephenauty24025 ай бұрын
@@dhcrouchmarineltd3049 Thanks for the help , very much appreciated. Do I have to go to Beta for a new clutch , bearings and seals or is there a TMC supplier in the UK? Thanks
@mrvne87355 ай бұрын
Hello, I have a question: what size is the thread of the injection nozzle to the injection line? =)
@dhcrouchmarineltd30495 ай бұрын
I usually use a thread pitch gauge and measure the outside diameter. Have had some Imperial UNC. What do you need to achieve? Are you making new lines?
@lucasdominguezandamoyo62455 ай бұрын
Thankyou.
@derekbueckert74285 ай бұрын
Thanks for the great detail and awesome explanation