5-1
DISASSEMBLY OF BASIC ENGINE
1. Disassembling and inspecting cylinder
head and valve mechanism ............5-2
1.1 Removing rocker shaft assembly............. 5-3
1.2 Disassembling rocker shaft assembly...... 5-3
1.3 Removing cylinder head bolt.................... 5-4
1.4 Removing cylinder head assembly .......... 5-4
1.5 Removing valves and valve spring .......... 5-5
1.6 Removing valve stem seal....................... 5-5
2. Disassembling and inspecting
flywheel ...........................................5-6
2.1 Removing flywheel................................... 5-7
2.2 Removing flywheel housing ..................... 5-7
2.3 Removing oil seal case............................ 5-7
3. Disassembling and inspecting gear
case, timing gears and camshaft ....5-8
3.1 Removing tappet...................................... 5-9
3.2 Removing gear pump housing................. 5-9
3.3 Removing crankshaft pulley..................... 5-9
3.4 Removing timing gear case ..................... 5-9
3.5 Removing PTO gear .............................. 5-10
3.6 Removing oil pump ................................ 5-10
3.7 Removing relief valve............................. 5-10
3.8 Removing governor shaft and speed
control lever ........................................... 5-10
3.9 Measuring timing gear backlash ............ 5-11
3.10 Removing idler gear............................... 5-11
3.11 Removing camshaft ............................... 5-12
3.12 Removing fuel injection pump camshaft 5-13
3.13 Removing front plate.............................. 5-14
4. Disassembling and inspecting cylinder
block, crankshaft, piston and
oil pan............................................5-15
4.1 Removing oil pan ................................... 5-16
4.2 Removing oil screen .............................. 5-16
4.3 Removing connecting rod cap ............... 5-16
4.4 Pulling out piston.................................... 5-17
4.5 Removing piston ring ............................. 5-17
4.6 Removing piston pin .............................. 5-17
4.7 Measuring crankshaft end play.............. 5-18
4.8 Removing main bearing cap .................. 5-18
4.9 Removing crankshaft ............................. 5-18