Volvo DP-E outdrive seal kits.

[piperca]

A couple of questions:

I know there are two seal kits listed for this drive, 876266 and 876267. When I search the 876266 part number, some descriptions say "complete kit" and others say upper gear seal kit. Does anyone know if I need both kits to service the drive or just the one? I'm thinking both, but I don't want to end up with duplicate seals. The 876266 kit is around $200 and the 876267 is around $100. I need to seal an upper on one drive (recently resealed, but needs upper gear work) and the complete drive on the other (older drive that needs routine maintenance).

Also, are the aftermarket seal kits as good as the OEM? I notice there is quite a price difference between the two. I'd like to save a few bucks, if I can, but not if it's an inferior product.

Thanks in advance!

 

[Don S]

Re: Volvo DP-E outdrive seal kits.

The 266 is for the upper only, the 267 is for the DP lower only.
I tried an upper aftermarket kit one time, several orings were missing, but the rest of the kit seemed to be fine. Not sure how long they last though. Wasn't really impressed with it at all.

 

[piperca]

Re: Volvo DP-E outdrive seal kits.

Thank you, Don, I'll stick with the OEM.

 

[piperca]

Re: Volvo DP-E outdrive seal kits.

Sorry, but one last question:

I believe a bearing needs to be removed from a gear that gets damaged in the process. Can anyone confirm the part number for the bearing that needs to be removed from the horizontal gear; is it 3850852?

Here's a link to the schematic: http://www.volvopentastore.com/mall/image/view/7/6/20599_1.png

The gear I am talking about is the pinion gear to the rear (#11). I believe the bearing I need is #13. I want to make sure I'm ordering the right part.

Thanks in advance.

 

[Don S]

Re: Volvo DP-E outdrive seal kits.

You do not need to remove the bearing to replace a seal. Do you have a manual for your drive, or just trying to wing it? You do need to reset bearing preload with a new compression sleeve and a new bolt.

 

[piperca]

Re: Volvo DP-E outdrive seal kits.

I'm sorry, I should have clarified.

I'm switching the upper gears to convert the gear ratio from 1.95 to 2.32. That rear input gear has a bearing that is pressed onto the back of it. I'm led to believe that the bearing will be damaged if it is removed, so I need to get a new bearing for the new gear set. Based on the schematic, I think the bearing I need is #13.

I do have the manual, which describes the damage to the bearing.

What compression sleeve and bolt are you referring to?

Update: I figured out the parts you were referring to; #17 and #30, correct?

 

[Don S]

Re: Volvo DP-E outdrive seal kits.

Yes, 17 and 30.
And yes the bearing will be destroyed in the process of removing it from the gear.

 

[piperca]

Re: Volvo DP-E outdrive seal kits.

Yes, 17 and 30.
And yes the bearing will be destroyed in the process of removing it from the gear.

... and I'm correct with part number 13 being the bearing that'll be damaged?

 

[billbayliner]

Re: Volvo DP-E outdrive seal kits.

I'm switching the upper gears to convert the gear ratio from 1.95 to 2.32. That rear input gear has a bearing that is pressed onto the back of it. I'm led to believe that the bearing will be damaged if it is removed, so I need to get a new bearing for the new gear set. Based on the schematic, I think the bearing I need is #13.

I do have the manual, which describes the damage to the bearing.

What compression sleeve and bolt are you referring to?

Update: I figured out the parts you were referring to; #17 and #30, correct?

That would be main drive gear that sits forward in the gear box, and will be the AFT bearing on that gear.
It's an industry standard 31307 tapered roller bearing and is ruined during removal because we have to cut and remove the roller cage in order to pull the inner race section from the gear.
The crush sleeve is #17.
The rolling torque must be reset when changing these two bearings.
You do not change the transmission gears for a ratio change in the DP-E drive. That's done by the lower unit gear set.

... and I'm correct with part number 13 being the bearing that'll be damaged?

This bearing will only be damaged if you try to remove it from the main drive gear.
Look at the rollers and outer race at both of these bearings for signs of wear.
The 31307 takes the greater load, and it will be off to one side. So if it shows signs of wear, I'd replace them both.

 

[piperca]

Re: Volvo DP-E outdrive seal kits.

Well, I hate to be the one to tell you, but the DP-E style drives are the only 290 style drives that have the ratio change in the upper. I have researched this to the point of nausea and can assure you of this fact. If you look at Volvo's parts guide, you'll see the lower on the 1.95 and the 2.32 are the same: http://www.volvopentastore.com/Gear-Housing-Upper/dm/*******.147851828--**********.655923626--store_id.366--view_id.768007

The upper gear set for a 2.32 has 26 teeth on forward/reverse gears and 21 on the main input gear.

As for the the bearing being #13, I'm going to assume I am correct, but your cross reference number, 31307, might make it easier to get locally, if that is the same bearing we are talking about. Please confirm ... thanks.

 

[Don S]

Re: Volvo DP-E outdrive seal kits.

Yes, 13 is the one you need. Just look at the numbers on the bearing, and the race to purchase local.

 

[piperca]

Re: Volvo DP-E outdrive seal kits.

Fantastic, Don, thank you.

 

[billbayliner]

Re: Volvo DP-E outdrive seal kits.

Well, I hate to be the one to tell you, but the DP-E style drives are the only 290 style drives that have the ratio change in the upper. I have researched this to the point of nausea and can assure you of this fact. If you look at Volvo's parts guide, you'll see the lower on the 1.95 and the 2.32 are the same: http://www.volvopentastore.com/Gear-Housing-Upper/dm/*******.147851828--**********.655923626--store_id.366--view_id.768007

The upper gear set for a 2.32 has 26 teeth on forward/reverse gears and 21 on the main input gear.

As for the the bearing being #13, I'm going to assume I am correct, but your cross reference number, 31307, might make it easier to get locally, if that is the same bearing we are talking about. Please confirm ... thanks.

Well, let's see what Don has to say on this. This is a new one to me.
From what you're saying here are the DP E upper gear sets;

3857266
Replaced by
3843891 1 2.32:1

873313
Replaced by
3842269 1 1.95:1, 1.78:1, 1.68:1

The ratio numbers [in blue] refer to an over-all ratio, btw.

I know that the DP-C, D and E transmission gear cases interchange. The bearing box from a C will fit into the E and visa versa. The driven gear bearings are the same p/n and size.
If the transmission reduction changes, so does the tooth count. When tooth count changes, so does gear diameter.
If Volvo changed tooth count and gear diameter, how are they getting this gear set into the main case?
It is possible that there was a change to the part number and even the gear cut and profile, but I find it hard to see that the reduction would change.
This would also mean that we can no longer change DP lower units from underneath one transmission to another transmission and intermediate housing.

I could be wrong!

Don?????

 

[piperca]

Re: Volvo DP-E outdrive seal kits.

Here is the link to the lower: http://www.volvopentastore.com/Gear-Housing-Lower/dm/*******.147851828--**********.899894528--store_id.366--view_id.768010

You'll see that the part number for the 2.32 and the 1.95 are the same, which means the lowers are interchangeable, correct? How would they be able to change the gear ratio, if the lowers are the same? You've got me concerned, since I've purchased the new gear set.

Also, in the link to the upper, you'll see that the complete gear assembly for the 1.95 and 2.32 are completely different:


Upper Gear 3803411 Replaced by 3857269 2.32:1

Upper Gear 3857143 Replaced by 854179, 3858785 1.95:1, 1.78:1, 1.68:1

 

[Don S]

Re: Volvo DP-E outdrive seal kits.

.

 

[piperca]

Re: Volvo DP-E outdrive seal kits.

Phew ... thanks, Don! You guys had my heart pumping for a minute.

 

[billbayliner]

Re: Volvo DP-E outdrive seal kits.

Piperca, my apologies. Looks like there is a change in tooth count from 22/23 to 21/26 and it applies to the DP -E 2.30:1 ratio drive only. Since the E is the diesel drive, I assume this is being used with a diesel engine.
With all other ratios, the upper unit gear set remains the same.

Note the warning in the service bulletin. I'll bet that Volvo has done this to avoid the smaller 2.30:1 lower unit drive gear in leiu of the larger 16/30 tooth count 1.95:1 drive gear when used with the diesels.

Thanks for that, Don.

 

[piperca]

Re: Volvo DP-E outdrive seal kits.

No worries, I'm just glad I didn't waste my money on a gear set I didn't need ... LOL!