Komatsu 114E-3 Series, Руководство по ремонту, Страница: 313 / 342

50 Disassembly and assembly SEN00464-01
114E-3 Series
5
4) Install each lower bearing (3), setting its
projection to the cut of the main cap (1).
q
Check the mounting position No. at
part (
A ).
5) Apply engine oil (EO15W-40) to the jour-
nal surfaces of the crankshaft.
6) When installing main cap (1), check the
mounting position mark on it and direct the
embossed letters of “BACK” at part (
A )
toward the rear of the cylinder block.
q
Push in each main cap by hitting it
lightly with a plastic hammer or rubber
hammer.
7) Tighten main cap mounting bolts (2).
a
Apply engine oil (EO15W-40) to the
bolts.
a
Tighten the mounting bolts in the
order shown below: [1]
→ [14]
3
Main cap mounting bolt:
1] 167 ± 8 Nm {17.0 ± 0.8 kgm}
2] Loosen by 360°
3] 30.4 ± 3.0 Nm {3.1 ± 0.3 kgm}
4] 50 ± 4.9 Nm {5.1 ± 0.5 kgm}
5] 120° ± 5° (Use angle tightening tool J )
q
When not using tool J
Make marks on the main cap and bolt with
paint, then tighten the bolt by
120° ± 5° .
8) After tightening the bolts, make sure that
the crankshaft turns smoothly.