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Exhaust Bellows-gctid345585

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    Exhaust Bellows-gctid345585

    My son is buying a 1990 Invader has a 5.7 dual prop Volvo Pinta 280 I think. Anyway the mechanic that sold it to him said all it needed were new bellows put on which he would do for him. I was talking to him and he told me that the new bellows have slits in the bottom of the exhaust one. Anybody know if this is correct.

    #2
    over40pirate wrote:
    My son is buying a 1990 Invader has a 5.7 dual prop Volvo Pinta 280 I think. Anyway the mechanic that sold it to him said all it needed were new bellows put on which he would do for him. I was talking to him and he told me that the new bellows have slits in the bottom of the exhaust one. Anybody know if this is correct.
    The exhaust bellows have always had a weep hole that is to be FWD and at the lowest most point. This is to drain the water from them and while the drive is tilted up.

    Exhaust bellows rarely need to be replaced.

    A 1990 will likely have the 290 drive..... and if it's a Duo Prop, it may be either the A or B drive. I could tell you by a photo or two.

    On the main drive bellows, make sure that your son does not pay to have the entire drive removed.

    I suggest this because there are some who think that all must be removed, when in fact it does not.... and the customer ends up paying for unnecessary work.

    The transmission ONLY needs to be removed for this.

    Make sure that the OEM Euro style band clamps are used.... not the fully cut worm drive screw slots clamps.

    Of equal and perhaps of more importance will be the PDS bearings.

    These are the equivalent of a Gimbal bearing in a Merc or later V/P drive.

    [COLOR]"#FF0000" wrote:
    I cannot emphasize enough on the importance of these being in good condition! You DO NOT want a failure here.... trust me! [/COLOR]

    One catch here, is that there is no good method to determine if these are OK without removing the PDS.

    There is simply no way to turn or spin the PDS as to feel the smoothness or roughness of the bearings.

    However, when severely worn, we can perhaps use a dial indicator and check for side play.

    If any play is noticed, it's time for a replacement!

    If no history of replacement (and there seldom is), I'd sure suggest negotiating a bearing replacement into the purchase deal.

    .

    Attached files http://baylinerownersclub.org/media/....jpg[/img] http://baylinerownersclub.org/media/....jpg[/img]
    Rick E. Gresham, Oregon
    2850 Bounty Sedan Flybridge model
    Twin 280 HP 5.7's w/ Closed Cooling
    Volvo Penta DuoProp Drives
    Kohler 4 CZ Gen Set

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