Installation: Crankshaft gear • Heat the crankshaft gear to approximately 170 ± 10°C with a gas burner or the like. • Align the key fitted in the crankshaft with the slot in the crankshaft gear. Drive the gear into position by lightly striking its end face with a plastic hammer. Installation: Thrust plates • Install… Read More »
Inspection: Main bearing span when free •If the measurement is below the specified limit, replace both the upper and lower bearings as a set. •Inspection: Main bearing-to-crankshaft oil clearance – Fit the upper bearing into the upper crankcase and the lower bearing into the lower crankcase. – Tighten the main cap bolts to a torque… Read More »
Removal: Lower crankcase • Loosen the bolts in several passes in the order indicated in the illustration (1 to 16). • After loosening the bolts, loosen the main cap bolts in several passes in the order indicated in the illustration (17 to 26), then remove the main cap bolts. Removal: Crankshaft gear
Inspection: Crankshaft end play • If the measurement exceeds the specified limit, replace the thrust plates with oversized ones. Available oversizes: +0.15 mm, +0.30 mm, +0.45 mm • Replace the crankshaft if the end play is too large to adjust using oversized thrust plates.
•Installation: Idler gear and sprocket Install the idler gear and sprocket on the idler shaft while aligning the marks “1” on its teeth with the corresponding mark on one of the crankshaft gear teeth. Installation: Timing chain • Support the cam sprocket with • Check that the idler gear and sprocket and the crankshaft gear… Read More »
Inspection: Tension lever • Check the timing chain sliding surface and point of contact of the tension lever for cracking or flaking. • Replace the tension lever if defects are evident. •Inspection: Tension lever-to-tension lever shaft clearance Replace the defective part(s) if the clearance exceeds the specified limit. Inspection: Guide plate • Check the timing… Read More »
Inspection: Timing chain elongation • Support the cam sprocket with • Align the inscribed lines on the adjusting plate and the nut to adjust the exhaust cam sprocket and the intake cam sprocket positions to their normal installed positions. • Push the tension lever by hand to make the timing chain taut. • Measure the… Read More »
Installation: [Installation] • Clean the sealant application surface of the plate and timing gear case. • Apply a bead of sealant to the plate mounting surface of the timing gear case evenly and without any breaks. • Install the plate within 15 minutes of applying the sealant, being careful not to dislodge the sealant. [Inspection]… Read More »