LXi and WideBody PTO/Pump Splines

[cmillsap]

(06-29-2013 01:05)cmillsap Wrote:  

(06-29-2013 00:23)davidmbrady Wrote:  Hi Chuck,

Thanks for clarifying the process for upgrading a SAE B (7/8"-13T) PTO to a wet splined SAE BB (1.0"-15T) PTO. I'm on your heels! This upgrade is on my short list.

Concerning the use of flex hose in place of the steel U-Pipe. From our Document Library, the Chelsea 267 PTO Installation documentation, page 3, has this to say:

Chelsea strongly recommends the use of pump supports (Support Brackets) in all applications.
P.T.O. warranty will be void if a pump bracket is not used when:
1) The combined weight of pump, fittings and hose exceed 40 pounds [18.14 kg].
2) The combined length of the P.T.O. and pump is 18 inches [45.72 cm] or more from the P.T.O.
centerline to the end of the pump.

It's been a while, but I think our combined PTO + Pump length is shorter than 18 inches and I think we come in at less than 40 lbs. If not, then the steel flex pipe does serve as a support of sorts. (It's better than nothing)!

Thanks, David,

I will get the part #'s and their cost together when I know what they are for sure and post the info here. I just don't have it broken out yet.

The problem with the steel u-line is the coupling nuts have bad threads.
A new steel U-line pipe would probably have to be custom made. The present u-line configuration does include a length of flexible hose.

I haven't measured it but I think it is less than 18"s but not much less. It may also be that the 1" pump is longer than the 7/8", I don't know that it is tho. I wouldn't be surprised if the weight exceeds 40#s. There may be a convenient way to add some bracing, I'll speak to Rolando about Chelsea's recommendations. I wouldn't want the weight to fatigue the bolts and let the assembly fall off. Yikes!

Here’s the cost comparison between buying a new 1” wet splined PTO and rebuilding your 7/8” greasable PTO into a 1” wet splined PTO’

I was quoted $1800 for a new 1” wet splined PTO.
David paid $675 for a 1” greasable PTO.

I am not aware of any difference between the two PTO(s) above as you can convert a greasable 1” PTO to a wet splined PTO simply by installing the Chelsea #328591-129x kit. I probably paid full retail as that was the price the manufacturer (Chelsea) quoted me.

I also paid more than David did for the 1” pump from CPC.
I paid $1482 for the CPC1049 pump.
David paid $795 for the same pump.

To rebuild the 7/8” PTO to 1” requires the following replacement parts;

1 CHE-328274 PTO closed end cap = $52.36
1 CHE-550397 1”i.d. bearing = $26.08
1 CHE-550532 1” i.d. bearing = 28.65
1 CHE-550439 1” i.d. bearing = 45.62
1 CHE-35-P-7 Gasket = 5.95

Total Parts = $ 152.71
PTO rebuild labor = 245.00

Total cost = $ 397.71
As compared to David’s cost of $675 for a new 1” PTO


If we use David’s cost, the total cost to convert from a 7/8” greasable PTO to a 1” wet spline PTO is:

1 CPC1049 1”pump $795.00
1 Rebuild of 7/8” to 1” PTO $397.71
1 129X wet spline kit $326.65
Totals $1519.36

Add the cost of hydraulic oil and filters and transmission fluid loss replacement.