Home Noticeboard Maintenance, Renovation, Repairs Forum Engine Removal Mac 26 Volvo MD2

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  • #9150
    CWMA (UK)CWMA (UK)
    Participant

    So … removal of engine.

    The hatch steps removed, both cockpit soles removed to expose engine.
    On inspection the bilge in this area is foul. Dropped an adjustable spanner into it. Half an hour lost retrieving it. Eww!

    However, most of the fastenings on ancilliaries seem in good condition. No so much the engine mounts.

    Initial steps;

    Engine mounts and propshaft washed with WD40/Diesel bolts brushed off and measured. We assumed imperial sizes. Turned out a 19mm (3/4″) socket fitted. After a few days of soaking, one of our more experienced members showed up with a bar and socket, freeing 2 of the mounts. Two of the mounts some corrosion, these rotate with the spanner so may need to be cut off. Shaft was covered in grease so these fastenings seem to be comming off more easily however no room for a socket or ring so if (when) something proves stuck … Will get as far as possible over the next few days.

    We are expecting the clamp (orange rusty lump just ahead of the dripless shaft box) to move aft on release, providing a convenient and simple coupling release. Fingers crossed!

    • This topic was modified 8 months, 2 weeks ago by CWMA (UK)CWMA (UK).

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    #9152
    Linda NixonLinda Nixon
    Keymaster

    It’s a horrible dirty job but it will be worth it. Are you fitting a new engine?

    #9153
    CWMA (UK)CWMA (UK)
    Participant

    : ) Hi Linda!

    Yes – we need an engine to get on and off our moorings. Will be a second hand 5kw electric hub motor from an ebike or scooter + enough battery for around 100 miles under power. This is overkill but we have ambitions of doing some sailing with this boat!

    Image from today – note the entire shaft moved aft once the ring of bolts closest to the engine were released. Was easier than we expected by far and we get to keep the mounting plate.

    90% of the wiring loom released. FW/REVERSE lever released – will send that and the throttle remote along with the engine.

    One single stuck engine mount bolt (the other stuck one was on a mounting plate which itself was easily removed). Will grind that out Monday/Tuesday along with the rest of the pheripherals – exhaust box, fuel pipe, et al. With any luck the engine will be on a pallet by the end of this week!

    John @ CWMA.

    • This reply was modified 8 months, 2 weeks ago by CWMA (UK)CWMA (UK).

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    #9158
    CWMA (UK)CWMA (UK)
    Participant

    Exhaust and Fuel pipe DC. Original Volvo pannel removed and wiring released. Battery trays removed.

    There seems to be little holding her in but still immobile. The two forward engine mount topbolts revolve in their spot. Tried stopping the bottom nut but the bolt still turns. Patience wearing thin – am considering removing the flywheel so I can get at the assembly or cutting the engine mounts.

    Image: One of the offending nuts peeking out from behind the flywheel.

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    #9165
    CWMA (UK)CWMA (UK)
    Participant

    Alternator removed. Flywheel next, as it seems the two forward mounts are stuck solid and will need to be cut out. This will be easier (and safer) with the flywheel out of the way. Not ideal but there you go.

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    #9167
    Mike HotardMike Hotard
    Participant

    Slow but steady progress. Look forward to seeing the electric motor conversion!

    #9171
    CWMA (UK)CWMA (UK)
    Participant

    Hi Mike! Thanks for noticing.

    Tried to post you a link but … forum software ate it!

    Look for the DIY ebike forum “Endless Sphere”. Lots info info in their boats section.

    Also “Grin Ebikes” (run by the same guy) their videos page lists a pair of conversions “Shamrock” and “Bella Amis”.

    John.

    • This reply was modified 8 months, 1 week ago by CWMA (UK)CWMA (UK).
    #9176
    CWMA (UK)CWMA (UK)
    Participant

    Flywheel nut did not want to move! Look what it did to my chisel!

    Big thanks to Masons Marine, Men in Sheds and Exeter Surplus Bakers Yard (all in Exeter) for the tools and advice.

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    #9178
    CWMA (UK)CWMA (UK)
    Participant

    Failed to remove the flywheel with a pretty substantial (but borrowed) tool. We stopped when this started to deform. The loads were sufficient to inflict injury to one of the tool’s washers. Will locate a blow toarch and buy a similar tool that we can give a good wack! however it has been pointed out that there is sufficient room to cut out the offending mounts w/o removing the flywheel.

    The thinking here is;

    IF the flywheel can be removed easily it’s worth doing because we might then have been able to salvage the engine bed intact. It looks awful currently but is perfectly serviceable and will clean up. Should this prove beyond us (and it might be!) then there is always “plan B”.

    This would look like a small angle grinder, powered off the inverter on my bike. The tool in question is 500watt which is possible off the DIY battery packs. The inverter is a cheap one that came from China via Ebay, originally advertised as 2kw. I have my doubts! There is also the very real risk of the steel shifting while being cut – biting the tool. Safety first!

    We are running out of time at this particular site as the next boat is on her way!

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