Smigger Posted June 11, 2018 Report Share Posted June 11, 2018 This is a cry of help for a stranded fellow boater. His reverse no longer operates. He is trying to take off the gearbox,8 nuts have been taken off and the gearbox it moves about a quarter of an inch then refuses to move any more !!! Is anyone wiser than he is andoing could help him please Link to comment Share on other sites More sharing options...
WotEver Posted June 11, 2018 Report Share Posted June 11, 2018 Has he pushed the prop shaft well back? Link to comment Share on other sites More sharing options...
Smigger Posted June 11, 2018 Author Report Share Posted June 11, 2018 Prop is well back 2 inch or more.mainly sticking on the right looking down with the prop behind you Link to comment Share on other sites More sharing options...
zenataomm Posted June 11, 2018 Report Share Posted June 11, 2018 Before he removes the gearbox, tell him to check the gearbox dipstick, I'll bet it shows empty. He should fill it with the required oil EP 90? This gearbox is a hydraulic affair, and when it's empty it fails in the forward position to get you home, no neutral nor reverse. Link to comment Share on other sites More sharing options...
Smigger Posted June 11, 2018 Author Report Share Posted June 11, 2018 He dropped the oil and refilled with with correct ep 90. But still no reverse lol Link to comment Share on other sites More sharing options...
Tony Brooks Posted June 11, 2018 Report Share Posted June 11, 2018 29 minutes ago, Smigger said: He dropped the oil and refilled with with correct ep 90. But still no reverse lol So has he checked the adjustment for the ahead clutch and the reverse brake band? Has he checked the gearbox oil pressure (not easy unless you have a gauge and adaptor). Link to comment Share on other sites More sharing options...
Smigger Posted June 11, 2018 Author Report Share Posted June 11, 2018 He's got someone to do the job he just can't get the gearbox off the bolts it only moves roughly quarter of an inch back ?? Link to comment Share on other sites More sharing options...
bizzard Posted June 11, 2018 Report Share Posted June 11, 2018 (edited) Tell him not to on any account waggle the gearbox about. If he takes it out it must be taken out cleanly,level, straight back, no waggling, on a hoist sling is best. If its waggled about the boxes oil pump drive gear will almost certainly be busted. Edited June 11, 2018 by bizzard Link to comment Share on other sites More sharing options...
Smigger Posted June 11, 2018 Author Report Share Posted June 11, 2018 He just cant get the gearbox away from the engine ? Link to comment Share on other sites More sharing options...
RLWP Posted June 11, 2018 Report Share Posted June 11, 2018 (edited) 3 hours ago, Smigger said: This is a cry of help for a stranded fellow boater. His reverse no longer operates. He is trying to take off the gearbox,8 nuts have been taken off and the gearbox it moves about a quarter of an inch then refuses to move any more !!! Is anyone wiser than he is andoing could help him please The eight nuts on the adapter (outside of where the air goes in) or the eight nuts on the gearbox (inside of where the air goes in)? If they are the ones on the adapter, you need to give a good pull, you are disengaging the oil pump drive gear from the input shaft Two inches is barely enough to pull the gearbox back Richard MORE: Is he trying to take the gearbox off like this?: Or like this: Edited June 11, 2018 by RLWP Link to comment Share on other sites More sharing options...
mayalld Posted June 13, 2018 Report Share Posted June 13, 2018 On 11/06/2018 at 17:31, Smigger said: He dropped the oil and refilled with with correct ep 90. But still no reverse lol From BOTH boxes? Link to comment Share on other sites More sharing options...
bizzard Posted June 13, 2018 Report Share Posted June 13, 2018 (edited) The first photo of Richards is the safer way of removing the gearbox without breaking the oil pump drive gear, especially when refitting. Edited June 13, 2018 by bizzard Link to comment Share on other sites More sharing options...
Smigger Posted June 13, 2018 Author Report Share Posted June 13, 2018 The first photo is the one !!! Link to comment Share on other sites More sharing options...
RLWP Posted June 13, 2018 Report Share Posted June 13, 2018 2 minutes ago, bizzard said: The first photo of Richards is the safer way of removing the gearbox without breaking the oil pump drive gear, especially when refitting. It does have the disadvantage of having to get the oil pump drive gear properly engaged when you put it back together 2 minutes ago, Smigger said: The first photo is the one !!! Use more violence - the oil pump drive gear is held on by a big, fat O ring that tends to grab after 30-40 years. It will come off, you won't break anything Richard Link to comment Share on other sites More sharing options...
bizzard Posted June 13, 2018 Report Share Posted June 13, 2018 (edited) 10 minutes ago, RLWP said: It does have the disadvantage of having to get the oil pump drive gear properly engaged when you put it back together Use more violence - the oil pump drive gear is held on by a big, fat O ring that tends to grab after 30-40 years. It will come off, you won't break anything Richard Yes. When refitting he needs someone to turn the engine bit by bit to gently engage the wee pump gear with the big one, best on a hoist, straight and level, no waggling. Thats really if he puts the adapter plate on the engine first and then offers the gearbox on. Edited June 13, 2018 by bizzard Link to comment Share on other sites More sharing options...
Smigger Posted June 13, 2018 Author Report Share Posted June 13, 2018 So I'm helping this morning,lol. So if I draw it off square using small ratchet straps it should come off to be supported by a sling Link to comment Share on other sites More sharing options...
bizzard Posted June 13, 2018 Report Share Posted June 13, 2018 2 minutes ago, Smigger said: So I'm helping this morning,lol. So if I draw it off square using small ratchet straps it should come off to be supported by a sling Its also makes it easier on a sling. You could lever it off with two levers, one on either side and lever both equally at the same time. Incidentally, you have got the rear of the engine supported, on a hoist or jack underneath ? Link to comment Share on other sites More sharing options...
Smigger Posted June 13, 2018 Author Report Share Posted June 13, 2018 Cheers I'll be in touch Link to comment Share on other sites More sharing options...
RLWP Posted June 13, 2018 Report Share Posted June 13, 2018 2 hours ago, Smigger said: So I'm helping this morning,lol. So if I draw it off square using small ratchet straps it should come off to be supported by a sling Yes, only I'd use levers Link to comment Share on other sites More sharing options...
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