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Modern Tractor Discussion Board Topic: Re: MF 3070 rpm guage [Show Entire Topic] [Return to Forum] Author [expand] [Modern View] oj 05-07-2009 21:04:30 208.114.162.12 20473 Report to Moderator there is an engine speed sensor on this tractor (i think - not sure, i have a 3670 - sort of similar in many ways only bigger) and it has an engine speed sensor, i"ve never changed mine, but as far as i"m aware its mounted on the right hand side of the rear axle housing... having looked at the online 3070 parts book, there are speed sensors located on top and on the left rear of the diff housing, as far as i can tell, the sensor on top of this housing (screwed into the hydraulic lift cover) is the trans speed sensor, the one on the left rear of the diff casting is the pto speed sensor, and i"d take a stab at the sensor on the hydraulic pump cover being the engine speed sensor, pump cover is located under the right hand cab door (as you sit in the tractor), parts book page 182 - "hydraulic pump cover", sensor is either item # 24 or 30. hope that helps, good luck, oj parts book [Reply]  [No Email] oj 05-07-2009 21:12:14 208.114.162.12 20474 Report to Moderator just a quick thought... before you change the sensor, just check the wiring to it, make sure the contact is good between the sensor and the wiring harness, maybe take the wire off and clean everything first and then see it the problem solves itself, done that a few times on my old girl... good luck.   [Reply]  [No Email] [Show Entire Topic]   [Options]  [Printer Friendly]  [Return to Forum]   [Add a Reply] Hop to: Another Forum Tractor Talk Tool Talk Restoration Tips Paint & Bodywork Implement Alley Tractor Transporting Allis Chalmers Case Combines Crawlers Farmall & IH Ford Ford 9N,2N & 8N Fordson John Deere MH & MF Harry Ferguson Minneapolis Moline Oliver & Cockshutt Garden Tractors Orphans Stationary Engines Today's Tractors Memorabilia Tractor Tales Using Your Tractor Tractor Pulling Site Comments Test Forum Buyer Seller Feedback Kountry Life Classic Trucks