Oil flow for the piston cooling system is controlled by two valves. The opening valve supplies oil and the control valve balances the oil flow to the piston cooling channel. The piston cooling nozzle is aligned so that the oil jet hits the underside of the piston crown. The power steering/fuel pump gear, the air compressor gear and the PTO gear are not timing gears. The pump and compressor gears fasten to their respective components. The pump gear is driven by the auxiliary idler gear. The compressor gear is driven by the double idler gear. The double idler drives the adjustable idler and the gear used to drive the power take-off, if so equipped. This is part of the “REPTO-Ready” feature.
A PTO unit with drive gear is substituted for a cover on the flywheel housing. TIMING GEARS The timing gears are located at the rear of the engine. Backing up the gears is a plate: a 6 mm (1/4 inch) thick steel sheet attached to the cylinder block. The advantages of this configuration are more precise timing, fewer components and lower noise levels. 16 The camshaft gear fastens to the hub on the end of the shaft. A vibration damper also attaches to the hub outboard of the gear. Teeth on the damper actuate the camshaft position sensor. The gear is driven via the adjustable idler. Figure 16 — Timing Gears and Plate Page 23 DESCRIPTION AND OPERATION 1. Crankshaft Gear 2. Double Idler Gear 3.
Adjustable Idler Gear 4. Camshaft Gear and Damper 5. Auxiliary Idler Gear 6. Power Steering/Fuel Pump Gear 7. Air Compressor Gear 8. Oil Pump Gear 9. Power Take-Off Gear (Optional) 10. Timing Gear Plate