Yanmar L48V [11/24] Engine

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 Piston Ring Inspection Item Top Ring L48V Second Ring Oil Ring Top Ring L70V Second Ring Oil Ring YANMAR LV Service Manual Standard Limit Thickness 0 0578 0 05846 in 1 470 1 485 mm 0 0535 in 1 36 mm Side Clearance 0 00255 0 00374 in 0 065 0 095 mm 0 0059 in 0 15 mm End Gap 0 00787 0 01377 in 0 200 0 350 mm 0 0394 in 1 00 mm Thickness 0 0578 0 0586 in 1 470 1 490 mm 0 0535 in 1 36 mm Side Clearance 0 00118 0 00255 in 0 030 0 065 mm 0 0059 in 0 15 mm End Gap 0 01181 0 01771 in 0 300 0 450 mm 0 0394 in 1 00 mm Thickness 0 1366 0 1374 in 3 470 3 490 mm 0 1322 in 3 36 mm Side Clearance 0 00078 0 0026 in 0 020 0 055 mm 0 0059 in 0 15 mm End Gap 0 0059 0 01377 in 0 150 0 350 mm 0 0394 in 1 00 mm Thickness 0 0578 0 0585 in 1 470 1 485 mm 0 0535 in 1 36 mm Side Clearance 0 0025 0 0037 in 0 065 0 095 mm 0 0059 in 0 15 mm End Gap 0 0079 0 0138 in 0 200 0 350 mm 0 0393 in 1 0 mm Thickness 0 0578 0 0586 in 1 470 1 490 mm 0 0535 in 1 36 mm Side Clearance 0 0012 0 0026 in 0 030 0 065 mm 0 0059 in 0 15 mm End Gap 0 0118 0 0177 in 0 300 0 450 mm 0 0394 in 1 0 mm Thickness 0 1366 0 1374 in 3 470 3 490 mm 0 1322 3 36 mm Side Clearance 0 0008 0 0026 in 0 020 0 055 mm 0 0059 in 0 15 mm End Gap 0 0059 0 0138 in 0 150 0 350 mm 0 0394 in 1 0 mm Reference Page See Piston Piston Rings and Wrist Pin on page 6 45 6 11