Komatsu 114E-3 Series Shop Manual page 317

50 Disassembly and assembly
8. Oil pump
a Fill the space in the pump rotor and idler
shaft bore with engine oil (EO15W-40)
and rotate the rotor by 2 turns.
1) Install oil pump assembly (2) with bolts (1).
a Set oil pump idler shaft (3) in the posi-
tioning hole of the cylinder block
securely.
2) Tightening order of bolts
Tighten the mounting bolts in the numeri-
cal order shown below: [1]
3
Mounting bolt:
1st time: 5 ± 1 Nm {0.5 ± 0.1 kgm}
2nd time:
114E-3 Series
→ [4]
24 ± 4 Nm {2.4 ± 0.4 kgm}
3) Measuring backlash
Rotate the crankshaft by 1 turn and mea-
sure backlash (C) between the pump and
idler gear.
a Backlash (C): 0.205 ± 0.125 mm
9. Camshaft
a Rotate the crankshaft to set the No. 1 cyl-
inder to the top dead center.
1) Apply engine oil (EO15W-40) to the cam-
shaft bore, camshaft journal, and lobe,
and then install camshaft gear assembly
(1) while lightly pushing and rotating it.
2) Install thrust plate (4) with bolts (3).
3
Mounting bolt:
SEN00464-01
24 ± 4 Nm {2.4 ± 0.4 kgm}
9