Komatsu 114E-3 Series Shop Manual page 313

50 Disassembly and assembly
4) Install each lower bearing (3), setting its
projection to the cut of the main cap (1).
Check the mounting position No. at
q
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.
Push in each main cap by hitting it
q
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]
114E-3 Series
q
→ [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)
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.
SEN00464-01
5