Komatsu ecot3 PC300LC-8 Shop Manual page 885

50 Disassembly and assembly
5. Install front seal and carrier assembly (8) to
front cover (9).
1) Apply gasket sealant to the mounting face
of the carrier.
2
Mounting face of carrier:
2) Apply the pilot tool of the front seal to the
crankshaft and push in the whole carrier.
3) Remove the pilot tool.
4) Tighten the mounting nuts in the order of
the numbers shown in the figure.
3
Mounting nut:
9.8 ± 2.0 Nm {1.0 ± 0.2 kgm}
6. Carry out the following installation in the
reverse order to removal.
[*1] [*2]
Install alternator belt (5) and fan belt (3) as fol-
q
lows.
1. Loosen tensioner assembly (4) and install
alternator belt (5).
a Insert a wrench to the portion (B) (width
across flats T 12.7 mm) of the tensioner
assembly (4), and rotate it to the winding-
up direction (a).
k
Make sure that the wrench is secured
at the portion (A) before rotating it.
(The spring of the tensioner assembly
(4) is strong. If the wrench is loosely
inserted, the wrench may accidentally
come off while being rotated and it is
extremely dangerous.)
k
After installing the fan belt (5), return
the tensioner assembly (4) slowly with
care.
k
Be careful not to get your fingers
caught between the pulley and fan belt
(5) during work.
PC300, 350-8
Gasket sealant (LG-7)
2. Loosen tensioner (2) and install fan belt (3).
a Following the same procedure for installa-
tion of alternator belt (5), insert the wrench
to the portion (A) of tensioner assembly
(2), and rotate it to the winding-up direc-
tion (a).
k
As described in step 1, carefully per-
form the work.
[*3]
a Tighten the vibration damper to the following
torque.
3
Mounting bolt:
200 ± 10 Nm {20 ± 1.0 kgm}
SEN02636-03
7