Komatsu ecot3 PC300LC-8 Shop Manual page 881

50 Disassembly and assembly
16. Remove front gear cover cap (20).
17. Rotate the crankshaft forward to set stamp (m)
of supply pump drive gear (21) to the top and
set the No. 1 cylinder to the compression top
dead center (TDC).
18. Remove nut (22) and washer (23) from supply
pump drive gear (21).
19. Install tool A1 with bolts [1] (M8 x 1.25).
PC300, 350-8
20. Remove 4 nuts (24).
21. Push in tool A1 installed in step 19 and remove
fuel supply pump assembly (25).
Installation
Carry out installation in the reverse order to
removal.
[*1]
a Tighten the hose clamps before and after the
air intake tube to the following torque.
3
Hose clamp: 9.8 ± 0.5 Nm {1 ± 0.05 kgm}
[*2]
a Adjust the belt tension. For details, see Test-
ing and adjusting, "Testing and adjusting air
conditioner compressor belt".
[*3]
k
Don't correct high-pressure tube by bend-
ing it for re-use.
k
Always use genuine clamp for fixing high-
pressure pipe. Strictly observe the tighten-
ing torque requirements.
k
Keep the harness assembly and other har-
nesses 10 mm and above away from the
high-pressure tube.
a Before installing the high-pressure pipe, check
it for the following defects. If there are any of
these defects, it can cause fuel leakage.
Accordingly, replace the high-pressure pipe.
Check the taper seal of the connecting part
q
(Part (a): Part of 2 mm from the end) for visible
lengthwise slit (b) and dent (c).
Check part (d) (end of the taper seal: Part at 2
q
mm from the end) for stepped-type wear
(fatigue) which your nail can feel.
SEN02636-03
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