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580CK Lost hydraulics while digging

Delmer

Senior Member
Joined
Jan 3, 2013
Messages
8,923
Location
WI
Nothing left of the splines on the pump shaft then?

Don't worry too much about finding a used pump, they're common and relatively cheap to get new/aftermarket/rebuilt. Or if you want to do it cheap, if that's the standard 13 spline? then the spline and mounting pattern are almost universal with gear pumps, and you'd just need to find one close to the same size, and able to match up to your hoses.
 

Tinkerer

Senior Member
Joined
May 21, 2009
Messages
9,445
Location
The shore of the illinois river USA
I noticed his website is unavailable a while ago.:(
He has been having serious health issues for a couple of years.
He was only working part time the last time I talked to him.
I have no idea if that has anything to do with the website.
 

TSemenuk

Well-Known Member
Joined
Nov 13, 2019
Messages
88
Location
Lakeside, Ontario
I noticed his website is unavailable a while ago.:(
He has been having serious health issues for a couple of years.
He was only working part time the last time I talked to him.
I have no idea if that has anything to do with the website.
I tried the phone number off my previous bill and it didn't go through.
 

Tinkerer

Senior Member
Joined
May 21, 2009
Messages
9,445
Location
The shore of the illinois river USA
Look inside the coupler for the groove.
The parts book I took the image from doesn't show a snap ring.
All Case service manuals specify Molykote G for the splines. It is supposed to be brushed on. Smearing it on is a no no.
Gun grease is not acceptable because it has a short life span on them.
 

TSemenuk

Well-Known Member
Joined
Nov 13, 2019
Messages
88
Location
Lakeside, Ontario
Look inside the coupler for the groove.
The parts book I took the image from doesn't show a snap ring.
All Case service manuals specify Molykote G for the splines. It is supposed to be brushed on. Smearing it on is a no no.
Gun grease is not acceptable because it has a short life span on them.
I found this image when searching for the parts. It shows the snap ring inside the coupler. Mystery solved.
Is Molykote G just an anti-seize compound? I'm going to have to find a neighbourhood kid with a hand small enough to fit through the hole in the frame to brush it on the driveshaft from the engine.
upload_2022-11-6_4-53-34.pngupload_2022-11-6_4-53-34.png
 

TSemenuk

Well-Known Member
Joined
Nov 13, 2019
Messages
88
Location
Lakeside, Ontario
This is what the "shear bolt" looked like when the pump came off. I had to cut the nut off to remove the coupler from the driveshaft.
upload_2022-11-6_5-44-20.png
 

TSemenuk

Well-Known Member
Joined
Nov 13, 2019
Messages
88
Location
Lakeside, Ontario
I found this image when searching for the parts. It shows the snap ring inside the coupler. Mystery solved.
Is Molykote G just an anti-seize compound? I'm going to have to find a neighbourhood kid with a hand small enough to fit through the hole in the frame to brush it on the driveshaft from the engine.
View attachment 271837View attachment 271837
So I received the coupler and pump and the coupler doesn't have a C-clip or a groove inside to install one. I'm thinking it's an updated part and the C-clip isn't strictly required. Can anyone confirm?
 

TSemenuk

Well-Known Member
Joined
Nov 13, 2019
Messages
88
Location
Lakeside, Ontario
Dale warned me about checking the engine mounts before installing a new hydraulic pump. Does anyone have a photo of what I should check? Seems to me the engine is bolted to the front axle/rad support with 5/8" bolts. Am I missing something?
upload_2023-2-13_6-43-6.png
 

Coy Lancaster

Senior Member
Joined
Dec 19, 2014
Messages
2,032
Location
Arkansas
Occupation
service tech
I believe the bolts item 36 are dowl bolts that align the block with the front bolster. As long as they are tight or have not been replaced you should be alright.
 
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