PACCAR Y53-1030A 12/09 – 55 –
MAINTENANCE SPECIFICATIONS
General Engine Specifications
Horsepower See engine dataplate
Firing Order 1, 5, 3, 6, 2, 4
Crankshaft Rotation (viewed from front of engine) Clockwise
Displacement 8.3 liters (504.5 in³)
Bore and Stroke 114 mm (4.49 in.) × 135 mm (5.32 in.)
Dry Weight 754 kg (1,662 lb)
Wet Weight 788 kg (1,737 lb)
Overhead Adjustment
Intake Valve Adjustment 0.305 mm (0.012 in.)
Exhaust Valve Adjustment 0.559 mm (0.022 in.)
Engine Brake Adjustment 2.286 mm (0.090 in.)
Maximum Overspeed Capability
(15 seconds maximum)
3,600 rpm
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