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Crankshaft
5---3
Note!
320---engines. Tightening torque of screws of crank-
shaft counterweight is
160 Nm
. Apply locking fluid Loctite
2701 on the screw threads.
F. Crankshaft hub piece
25--- 8
When fitting the hub piece to the crankshaft front end note the
correct position of the hub. (Engines with the timing mark on
the crankshaft pulley/vibration damper.) The hub piece hasan
installation mark --- on two teeth and the corresponding in-
stallation mark
·
of the crankshaft is on one tooth.
G. Changing crankshaft pulley/vibra-
tion damper
25--- 9
1. Loosen the alternator fixing screws and remove the v---belt.
2. Open the bolts of the pulley/vibration damper and remove
the parts. The pulley/vibration damper is positioned to the
crankshaft hub with a timing indicator (engines with timing
mark on the pulley/vibration damper).
3. Fix the new vibration damper/pulley on the crankshaft. Tap
the timing indicator in its place and tighten the fixing screws
to a torque of
30 Nm
.
Note!
Vibration dampers (pulleys) delivered as spare parts do
not have injection timing mark. Make the marking on the new
damper in connection with installation.
4. Rotate the crankshaft until the piston of the 1st cylinder re-
aches its top dead centre. Drop cyl. no 1 inlet valve down
against the piston head. Set the dial gauge on top of the valve
stem end and zero it at the piston top dead centre. Then rotate
the crankshaft opposite to running direction until dial gauge
shows about 15 mm below TDC. After that rotate the crank-
shaft slowly to running direction until the dial gauge shows the
figure corresponding injection timing (see table below).
5. Mark the injection timing on the tip of indicator with an elec-
tric pen (
do not tap
).
Piston distance from top dead centre vs. crank angle
Grad
320, 420, 620
mm
634
mm
1
˚
2
˚
3
˚
4
˚
5
˚
6
˚
7
˚
8
˚
9
˚
10
˚
11
˚
12
˚
13
˚
14
˚
15
˚
16
˚
17
˚
18
˚
19
˚
20
˚
21
˚
22
˚
23
˚
24
˚
25
˚
26
˚
27
˚
28
˚
29
˚
30
˚
0,012
0,047
0,106
0,188
0,294
0,423
0,576
0,752
0,951
1,173
1,418
1,686
1,976
2,289
2,625
2,983
3,363
3,765
4,188
4,633
5,100
5,587
6,095
6,624
7,173
7,742
8,331
8,939
9,567
10,213
0,013
0,054
0,121
0,216
0,337
0,485
0,660
0,861
1,089
1,344
1,624
1,931
2,264
2,623
3,007
3,417
3,852
4,312
4,797
5,307
5,841
6,399
6,980
7,585
8,214
8,865
9,539
10,235
10,952
11,692