Spending hundreds of dollars for manuals seems to be the only option
How so.? You can download an Operation & Maintenance Manual for it from the
Cat Pubs web site for $52. Put SEBU6724 in the box and click Search - covers all 6GK machines from first built.
If you want a full service and repair manual that will cost signifcantly more. Search for SENR6130, new they are priced at $930 or $660 on CD. Here's one on
eBay at $465 and if it is complete it will include the O&M Manual as well.
It's a "full-size" Cat excavator (as opposed to a mini-ex). Therefore the oil is anything that meets Cat TO-4 specification in SAE50.
The Dirt Boss is a favorite YouTube channel of mine, and in his Kobelco he used Rotella T4 15w40 in his swing drive and 90w gear oil in his final drives. I have these oils on hand and was wondering peoples thoughts. Im surprised how little information is available online with its vast amount of information.
You've obviously not been looking in the right places until you came here......
Cat finals do not react well to gear oils because of the EP additives which are known to attack the silicone rubber in the Toric rings of the Duo-Cone seals. The same TO-4 oil is recommended for the swing drive.