John Deere 3029, 4039, 4045, 6059, 6068 — CHECKING CYLINDER HEAD FLATNESS

Cylinder head and Valves/Checking cylinder head flatness CHECKING CYLINDER HEAD FLATNESS Maximum permissible flatness is 0.08 mm (0.003 in.). Machined surface of cylinder head must be refaced if flatness is more than specified maximum. NOTE: Maximum permissible amount to be machined from cylinder head is 0.76 mm (0.03 in.). After any head remachining, always recheck valve recesses. L30699 -UN-08AUG89 CD,3274,G05,6 -19-24FEB92 CTM3274 (01JUL99) 05-10 Saran Liter Engines 060799 PN=47 REMOVE VALVES AND VALVE SPRINGS 1. Using JDE138 Valve Spring Compressor, compress the valve springs far enough to remove keepers. 2. Release spring tension and remove valve rotator and -UN-07MAR95 valve spring.

Mark each part so that it can be reassembled in the same position it was removed from. 3. Remove valves, marking them for reassembly. L103629 4. Remove valve stem seals from valve guide tower. CD,3274,G05,8 -19-24FEB92 05 10