743b help

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I just purchased a 1991 743b.

After bring it home I noticed a bushing coming out of the left side where the hydraulics connect to the bucket quick connect system. I found the part for the pin replacement. But don't see a sleeve part number. I think it is broken, I got it all out. Just want to replace it all. Looks like the sleeve sits in the Piston buckle?

Second, I am going replace the hydraulic filter. Do I just unscrew it? Do I need to release any pressure before? Install new on and fill up the fluid? What kind of filter do you recommend and fluid? How high should fluid be on the glass eye?

Finally, oil and filter. What oil should I get and how many quarts? Filter suggestions?

I added some photos below. Thx you for the help.

https://photos.app.goo.gl/Xwb3LH5ojPx6VBnu6

 

[flyerdan]

According to the parts book (both it and the service manual are available in the manual thread) there shouldn't be a full length bushing in the tilt cylinder. It makes sense, because there would be no pivot point. A tang on the pin anchors it to the bobtach, so the pivot should be in the cylinder end. It looks like someone might have done a quick and dirty fix for wallered out weld on fittings.
Tazza has done repairs on bobtachs, he'll be along shortly and can give some good tips on how to fix it correctly.
As for the fluids, all of that is covered in the service manual; what type of oil would partly depend on location, you wouldn't use the same weight of hydraulic fluid in Yellowknife that you would in Phoenix. With OEM filter numbers, you can use the cross charts on big manufacturers like Baldwin or Wix to get local parts store filters.

 

[[email protected]]

According to the parts book (both it and the service manual are available in the manual thread) there shouldn't be a full length bushing in the tilt cylinder. It makes sense, because there would be no pivot point. A tang on the pin anchors it to the bobtach, so the pivot should be in the cylinder end. It looks like someone might have done a quick and dirty fix for wallered out weld on fittings.
Tazza has done repairs on bobtachs, he'll be along shortly and can give some good tips on how to fix it correctly.
As for the fluids, all of that is covered in the service manual; what type of oil would partly depend on location, you wouldn't use the same weight of hydraulic fluid in Yellowknife that you would in Phoenix. With OEM filter numbers, you can use the cross charts on big manufacturers like Baldwin or Wix to get local parts store filters.

Thanks Where can I download the service manual? Is it on the site anywhere? I would like to see the pictures of the parts and what oil I need ect. Thx you all

 

[wings5j]

Thanks Where can I download the service manual? Is it on the site anywhere? I would like to see the pictures of the parts and what oil I need ect. Thx you all

I just thought I would add, NAPA can look up your Bobcat and supply the hydraulic filters as well as air filters and engine oil filters. In my location, they are just a whole lot closer than my Bobcat dealer. John

 

[Tazza]

I just thought I would add, NAPA can look up your Bobcat and supply the hydraulic filters as well as air filters and engine oil filters. In my location, they are just a whole lot closer than my Bobcat dealer. John

That looks like someone has repaired it with a sleeve, that is not factory. I have done this before, i line bored these hoels due to wear and made bushings to take the holes back to 1 1/4” for the pins.
The eye of the cylinder should have a bushing, as this is the part that rotates, but the welded parts on the bobtach should not move. You may need to make new bushings if the holes are not out of shape to hold the pin correctly.
I did have some pictures of be moring these holes out, but they are not online anymore