Yanmar L48V [5/24] Yanmar

Содержание

• Engine 1
• Section 6 1
• Wm lft 2
• Before you begin servicing 3
• Caution 3
• Warnin 3
• _______ 3
• Caution 4
• Engine 4
• Introduction 4
• This section of the service manual describes the disassembly inspection and reassembly of the engine 4
• As undersize bearings are available and may have been installed some time during the life of the engine add the oversize or subtract the undersize from the standard dimension to measure these replacement parts refer to the parts catalog for the available sizes 5
• Cylinder head 5
• Cylinder head assembly 5
• Engine 5
• Intake exhaust valve seat 5
• Note all dimensions given are for standard original components oversize pistons and piston rings as well 5
• Specifications 5
• Valve clearance 5
• Yanmar 5
• Engine 6
• Intake exhaust valves guides and seals 6
• Push rod 6
• Engine 7
• Rocker arm and shaft 7
• Valve spring 7
• Yanmml 7
• Crankshaft 8
• Crankshaft balancer shaft piston and connecting rod 8
• Engine 8
• Balancer shaft 9
• Engine 9
• Engine 10
• Piston 10
• Yanmar 10
• Engine 11
• Piston ring 11
• Engine 12
• Connecting rod 13
• Engine 13
• Camshaft 14
• Camshaft and tappet 14
• Engine 14
• Tappet 14
• Cylinder block 15
• Cylinder block and crankcase cover 15
• Engine 15
• Crankcase cover 16
• Engine 16
• Yanmar 16
• Engine 17
• Oil pump trochoid pump 17
• Yanmml 17
• Engine 18
• Special torque specifications 18
• Engine 19
• Engine 20
• Special service tools 20
• Yanmar 20
• Engine 21
• Special service tools continued 21
• Engine 22
• Measuring instruments 22
• Yanmar 22
• Engine 23
• Measuring instruments continued 23
• Cylinder head 24
• Engine 24
• Removal of cylinder head 24

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ENGINE SPECIFICATIONS Note All dimensions given are for standard original components Oversize pistons and piston rings as well as undersize bearings are available and may have been installed some time during the life of the engine Add the oversize or subtract the undersize from the standard dimension to measure these replacement parts Refer to the parts catalog for the available sizes Cylinder Head Assembly Valve Clearance Inspection Item Standard All Models Intake Exhaust 0 006 0 002 in 0 15 0 05 mm Limit Reference Page See Measuring and Adjusting Valve Clearance on page 6 39 Cylinder Head Inspection Item Standard Limit Reference Page Combustion Surface Distortion Flatness 0 0020 in 0 05 mm or less 0 0059 in 0 15 mm See Cylinder Head Distortion on page 6 30 Valve Recession All Models 0 016 0 032 in 0 4 0 8 mm 0 039 in 1 0 mm See Valve Recession on page 6 28 Intake Exhaust 0 1003 in 2 55 mm L70V L100V Intake Exhaust 0 0551 in 1 4 mm All Intake Exhaust 90 L48V Valve Seat Width Angle See Valve Face and Valve Seat on page 6 27 Intake Exhaust Valve Seat Inspection Item Seat Angle All Models Standard Limit Intake Exhaust 90 L48V Intake Exhaust 0 100 in 2 55 mm L70V L100V Intake Exhaust 0 055 in 1 40 mm Seat Width YANMAR LV Service Manual Reference Page See Valve Face and Valve Seat on page 6 27 6 5