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John deere oil in coolant8/28/2023 Profile on Tier 3 engine camshaft has changed to allow more lift, which provides increased injection pressures. Extended valve adjustment of 2500 hours (one time only). Fewer wear points extend valve train life and serviceability is improved.Ĭamshaft is made of high-carbon steel material. It has a large diameter and a robust design that provides a high inertia force for smoother and quieter valve train operation. Precise control of valve events improves combustion. It eliminates need for pushrods and lifters, reducing the number of parts. The 13.5 L engine features a cam in-head design. The viscous damper is considered a lifetime component and shouldn't require replacement. This further improves durability and reliability for high horsepower. John Deere rod bearing design increases lubricating oil film thickness in bearing area. Seven main bearings support six crankshaft connecting rod journals. Main crankshaft bearing caps are machined while fastened to block to assure precise crankshaft alignment. Larger main bearing surface area for longer life. Journal surfaces are induction hardened for long life. Higher-contact ratio gears greatly reduce side-loading for improved reliability and durability.ĭynamically balanced crankshaft is constructed of heat-treated, high-carbon forged steel for maximum strength. Two-point contact gears provide quiet operation. Lower number of active gears provides fewer wear points for improved durability. This feature improves oil control, reduces oil consumption, improves piston ring life, and reduces emissions. Drilled passages for top liner cooling.Įngines feature directed top liner cooling around the top of cylinder liners. Reduces head gasket and liner temperatures for improved cylinder durability. Full-flow integrated oil cooler provides improved oil cooling and fewer leak points. Internal coolant manifold provides more uniform cooling efficiency. Engine, 13.5 L PowerTech™ Plus internal componentsĮngines feature a heavy-duty, high-quality, gray iron block. The one-piece block design features generous internal webbing to provide sturdy engine structure and improved sound quality.īlock is further strengthened by circular truss ribs, which serve as lower supports for wet cylinder liners.
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