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D6 9u hydraulic steering pump

D6 9u hydraulic steering pump

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stevens205
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I have been looking all over the forum and have found bits and pieces but not the whole thing hoping to find out a way to remove the seals in the bore that take the special tool without the tool. It is leaking oil in more than one place so I disassembled everything but the pump it's self. I took the pump off of the housing and filled it with oil Stuck a funnel down the hole that supplies oil to the steering housing filled it full of oil then spun it till the funnel was full and left it on the bench all day never leaked a drop. So I don't think I need to disassemble it in less you guys think I'm missing something with it I found several problems with it think I have most of them solved now
Thanks guys,
Rob
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Mon, Mar 12, 2018 8:57 AM
Old Magnet
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Make your own puller with threaded rod and coupling or nut. Requires drilling out the first set of retaining pins.
Attachment
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Mon, Mar 12, 2018 9:14 AM
ccjersey
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I would certainly reseal the whole unit while you have it off. An extra $50 or even $100 would be well spent to know you won't be back in there again next year.
D2-5J's, D6-9U's, D318 and D333 power units, 12E-99E grader, 922B & 944A wheel loaders, D330C generator set, DW20 water tanker and a bunch of Jersey cows to take care of in my spare time😄
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Mon, Mar 12, 2018 9:50 AM
stevens205
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Reply to ccjersey:
I would certainly reseal the whole unit while you have it off. An extra $50 or even $100 would be well spent to know you won't be back in there again next year.
Thanks guys is that just a peace of all thread? Were are the pins located and once it's drilled out what do you use to hold the new seal do you have to thread the hole and put a bolt in what size drill bit should be used thanks guys working on doing videos so I can post it for the next guy that comes along
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Mon, Mar 12, 2018 9:58 AM
TOGNOT
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Reply to stevens205:
Thanks guys is that just a peace of all thread? Were are the pins located and once it's drilled out what do you use to hold the new seal do you have to thread the hole and put a bolt in what size drill bit should be used thanks guys working on doing videos so I can post it for the next guy that comes along
Stevens, search through my posts last summer... I did this repair with the help of people on here. If I recall I measured and took pics of where the pins were located to drill or knock out.

Replace ALL the seals on the unit while you have it out. I missed two on the bottom and need to pull it out again.
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Mon, Mar 12, 2018 10:49 AM
stevens205
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Reply to TOGNOT:
Stevens, search through my posts last summer... I did this repair with the help of people on here. If I recall I measured and took pics of where the pins were located to drill or knock out.

Replace ALL the seals on the unit while you have it out. I missed two on the bottom and need to pull it out again.
Thanks tognot I'll see if I can find it
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Mon, Mar 12, 2018 10:54 AM
TOGNOT
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Reply to stevens205:
Thanks tognot I'll see if I can find it
Mine is (now) leaking at the two shafts that leak into the steering clutch area. They are about 1 1\4" ID.

The one in the pump is the easiest to replace - CAT has that seal.
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Mon, Mar 12, 2018 1:27 PM
ccjersey
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http://www.acmoc.org/bb/showthread.php?27731-D6-9U-steering-pump-seals/page4
D2-5J's, D6-9U's, D318 and D333 power units, 12E-99E grader, 922B & 944A wheel loaders, D330C generator set, DW20 water tanker and a bunch of Jersey cows to take care of in my spare time😄
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Mon, Mar 12, 2018 7:47 PM
stevens205
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Ok I know you guys gave me pictures of the tool but I'm confused is that just a peace of all thread or is there something welded to the end lol sorry I guess I don't understand how it pulls it out do you just thread the all thread into the retainer and that's it? Thanks again guys
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Tue, Mar 13, 2018 9:49 AM
TOGNOT
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Reply to stevens205:
Ok I know you guys gave me pictures of the tool but I'm confused is that just a peace of all thread or is there something welded to the end lol sorry I guess I don't understand how it pulls it out do you just thread the all thread into the retainer and that's it? Thanks again guys
Yes, that's what I recall - 7/8" OD x 14 thread per inch. I used a couple of washers and an old ball bearing ( from a motorcycle axle ?) and let the washers rest against the pump housing so the "puller" would have less friction. I think old magnet posted a picture.

Just double nut two nuts on the all thread, screw it into your pump. Then , with a washer against the pump housing , start cranking on the nut. It took a fair amount of effort , but they pulled out. I set mine out in the Sun ( over 100) to warm it up. : )
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Tue, Mar 13, 2018 10:50 AM
stevens205
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Reply to TOGNOT:
Yes, that's what I recall - 7/8" OD x 14 thread per inch. I used a couple of washers and an old ball bearing ( from a motorcycle axle ?) and let the washers rest against the pump housing so the "puller" would have less friction. I think old magnet posted a picture.

Just double nut two nuts on the all thread, screw it into your pump. Then , with a washer against the pump housing , start cranking on the nut. It took a fair amount of effort , but they pulled out. I set mine out in the Sun ( over 100) to warm it up. : )
Ok thanks for the help appreciate it I'll let you guys know how it goes when I get back to it
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Tue, Mar 13, 2018 10:58 AM
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