VP 290A DP prop bearing carrier/housing part number?-gctid804585

[welshswampy]

Anyone know what part number a prop bearing carrier/housing would be on a VP290A DP (1.78/1)

Think I've buggered mine up by not installing the thrust washer before the forward prop (long story)

I can't find the info I need (or am looking in the wrong places)

Are any other DP housings the same

Much thanks

[Amadaies]

Believe this is what your looking for. . 3857097

http://www.marinepartseurope.com/en/volvo-penta-cat-7743320.aspx

[welshswampy]

Thanks Amadaies, I looked at that site earlier but didn't see the part numbers

They practically jumped off the screen when I just looked again :woohoo:

Do you know if all the 290 DP drives use the same housing, I can get a good used one over here for £120 but don't know if it;s definitely going to fit and would the original part number be stamped on it

[Amadaies]

This should list it. with a little looking you should find all the info you need.

https://www.marinepartseurope.com/en/volvo-penta-3857097-bearing-housing.aspx

[2850Bounty]

"welshswampy" post=804585 wrote:
Anyone know what part number a prop bearing carrier/housing would be on a VP290A DP (1.78/1)

Think I've buggered mine up by not installing the thrust washer before the forward prop (long story)



[color]#000088 wrote:
I'll bet that this is actually a fairly short story! :blush:

Don't feel too badly....... you are not alone. I have repaired several of these for the exact same reason.

The good news is (if you can call this "good news"), is that you will never make this mistake again! [/color]

I can't find the info I need (or am looking in the wrong places)

Are any other DP housings the same

[color]#000088 wrote:
There were some changes made re; shim location shortly after the early Duo Props.

I'm thinking that p/n 3857097 is correct as it shows up for several models and gear ratios.

[/color]

[color]#000088 wrote:
OK...... note that this is NOT a simple R&R part!

None of these housing are machined identically, of which means that we cannot simply pull one out, and install another one.

You have several options:

a..... by the book...... take the lower gear unit in to a qualified AQ series technician for the proper re-shimming and set-up.

The carrier controls the pre-load of the FWD prop gear bearings (2 of them).

This may require up to 3 or 4 hours shop time.

b.... un-orthodox method...... Remove the bearing race from the bad carrier and inventory the shims.

Take the both the old and the new prop shaft bearing carrier to a machinist and have him carefully measure the X to Y dimensions of both carriers.

Once he understands the function of this part and how the bearing race pre-load controls the gear contact, he should be able to do the math and suggest what shim changes are necessary.

[/color]

[attachment]35451 wrote:
DuoPropbearingcarrierexplained-2.jpg[/attachment]

[welshswampy]

Thanks for detailed reply Rick, I was hoping to do it myself but maybe not now

I only realised something was up after one of the anode screws came loose and I heard a brief grinding noise (it was the screw rubbing against the prop hub)

When I checked I saw that the prop hub had shortened by an inch or so and the bearing carrier end had become rounded :blush:

What else would I need to change at the same time, seals, bearings?

[2850Bounty]

"welshswampy" post=804957 wrote:
Thanks for detailed reply Rick, I was hoping to do it myself but maybe not now

I only realised something was up after one of the anode screws came loose and I heard a brief grinding noise (it was the screw rubbing against the prop hub)

When I checked I saw that the prop hub had shortened by an inch or so and the bearing carrier end had become rounded :blush:

What else would I need to change at the same time, seals, bearings?

[color]#000088 wrote:
Are you certain that the prop shaft bearing carrier is beyond use?

Could it be machined down for a custom made spacer ring (TIG welded in place) and then bored to dimension for the AFT seal fit?

As for other parts..... new O-rings and new seals for sure.

[/color]

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