Tachometer circuit-need help

[BCISam]

Can't find any info on tractor tach ckt using 8 pin SN29736P1. Replaced ic checked every component. New unit costs $1000.00 Alternative is make new pbc using LM2907 but will it drive a 50Ma speed MTR??

 

[john monks]

Do you have the make and model of the tractor?
According to the datasheet the LM2907 will drive a load up to 50mA.

 

[BCISam]

Thanks for response; Tractor is a John Deere 2750, Tach assy is JD Part # AL35166. Tryed all sites I know for data sheet on SN29736P1 don't even know pin out or block diagram. Have traced out the ckt & have componet values.