Strainer Failure

[R. L. Addison 299]

I have three "C" series Sundstrand units on my work-bench at this time and they all have a common problem which contributed to the failure of the pump valve plate.

 

The (part # 106047) strainer had come apart and let contamination into the pump causing failure. If you are like I am and like to tinker, time is not a major issue after

retirement & on disability, but replaced joints & arthritis are, and I'm wondering if anyone has had this experience and what the solution can be. I don't relish the idea of

replacing this item as a part of preventive maintenance, but I cannot see another way.

 

Also while they are down, I saw in the parts book that I can swap axles with a spare six speed transmission I have and stop oil leaking through pitting in the seal diameter.

I knew it would be useful for something.

 

Thank you for any Ideas.

 

dunngawn@hotmail.com

 

[Jerry77 1,218]

24 minutes ago, R. L. Addison said:

but replaced joints & arthritis are

You Too??  

[KC9KAS 4,741]

@R. L. Addison 

[oliver2-44 9,875]

I've seen a couple of reports of the strainer coming apart on the Sundstrand transmissions on here. I recall someone epoxying it back together with JB weld 9 after a good cleaning/degreasing. 

 

[daveoman1966 3,762]

For anyone in need, I have a SCREEN STRAINER as in these pics....Size it up to yours and send me an email if in the market for a good used one.  

my direct email is:  

daveoman@windstream.net 

[Hacksawhero123 351]

The pitted seal diameter on a shaft can in most time be solved with a wear ring (speedi-sleeve). You might have to make your own installer tool out of pipe or tubing. I just saved a $175 main shaft with a $25 speeding-sleeve on my Troybilt Horse tiller. If you have no spare shafts handy, the sleeves are a good alternative. 

Mark. 

[R. L. Addison 299]

23 hours ago, Jerry77 said:

You Too??  

Yup- four store bought joints, two shoulders, & two hips & right ankle has about half a dozen screws in it.

9 hours ago, Hacksawhero123 said:

The pitted seal diameter on a shaft can in most time be solved with a wear ring (speedi-sleeve). You might have to make your own installer tool out of pipe or tubing. I just saved a $175 main shaft with a $25 speeding-sleeve on my Troybilt Horse tiller. If you have no spare shafts handy, the sleeves are a good alternative. 

Mark. 

 

Problem with those is they will not go through the needle bearings to split the case for service ir repair.

19 hours ago, oliver2-44 said:

I've seen a couple of reports of the strainer coming apart on the Sundstrand transmissions on here. I recall someone epoxying it back together with JB weld 9 after a good cleaning/degreasing. 

 

 

[R. L. Addison 299]

These are epoxied originally and the heat and oil release the epoxy  over the years and then they can come apart.

17 hours ago, daveoman1966 said:

For anyone in need, I have a SCREEN STRAINER as in these pics....Size it up to yours and send me an email if in the market for a good used one.  

my direct email is:  

daveoman@windstream.net 

 

[R. L. Addison 299]

That is the style I've seen in hydrogear units (pre 1974 piston pump>gear motor) and particles of steel can be pulled by the magnets, and I scrapped a couple of those that the steel splinters got into the motor part & ate up the gears & pockets.

[daveoman1966 3,762]

The screen shown has done exactly what it is there for....to trap micro fine metal (steel) filaments before being pumped thru the hydro system.  I, too, have found internal piston slippers and brass plates torn up by metal shavings. (High-pressure air and some carb cleaner will blow away these micro-filaments.)   These can usually be resurfaced with 400-600-1000 grit emery paper to restore hydro pressures / performance.  I have done just that on several Sundstrand units  that I've rebuilt over the years...both piston-to-piston (90-1136, 376, 40)  and the older Hydrogear (90-2046, 2062) styles.    Any owner has to be cautioned to avoid the PANIC STOP of pulling UP on the parking brake lever as this action causes the Parking Pawl to bang into a internal gear, eventually wearing away either of both parts....that's commonly the source of the steel micro-filaments.  Another source of debris is being careless when topping off the reservoir fluid ...getting dirt into the system.  In any case, this is the screen filter I have if anyone is interested.

  My direct email is:  daveoman@windstream.net