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I have a John Deere Model 670 and I have the same oil caps. The two caps are simply duplicates. I've heard from others that these diesel engines are used in more than one application and in one case the top cap will be most convenient and in another the side cap will be easiest to access.

1070 3rd oil cap
John Deere Tractors
Replies 4 Post by GlennT

I did as much research on chippers as I could a year or so ago and finally purchased a Valby 140, which is a direct-drive PTO model without a manual or hydraulic feed. My John Deere 670 (18 HP PTO, 16.5 HP drawbar)is able to handle this quite nicely. I agree with what everyone has said and just wanted to suggest a few things. I spent close to $3,000 on a PTO driven chipper in order to avoid having another engine to maintain and to obtain a chipper which is VERY rugged--commercial quality. By having a direct drive disk and manual feed, all of the tractor's power is directed to the disk and my little tractor is able to handle whatever I feed in--normally no more than 3 to 4 inch stuff at most. The chippers sold by TroyBilt, Northern Tool, Country Home (Dr....), etc. are good units for occasional backyard use, but just aren't made for heavy use over the long haul (in my opinion, of course). The Valby, Danuser, Patu, and to some degree Bear Cat chippers are constructed of heavier gauge steel, have larger and heavier disks, more rugged bearings, and larger cutting blades. So I guess it boils down to: How much chipper do you need? and How much are you willing to spend? One factor that wasn't mentioned was convenience. I could rent a good-sized chipper for $100 a day; however, by having my own I can take care of small jobs whenever I want to. I don't have to stack up brush until I have enough to justify renting a chipper. I am keeping track of my chipping hours and it will take me three or four years to break even on my purchase price (in comparison with renting). Chipping is not my idea of a good time; it's tedious and dirty work. I sure do like the mulch, though; it's worth it's weight in gold.

Questions about larger chipper shreders
Operating and Attachments
Replies 16 Post by GlennT