Doosan G20P-5, Service Manual

Page: 90 / 306

G424F(FE) Service Manual Chapter 3. Engine Mechanical System 88
Tighten
•
Bolts: 6 – 10 N
·
m (4.4 – 7 lb
·
ft.).
•
Nut: 6 – 8 N
·
m (4.4 – 5.8 lb
·
ft.).
28.
Flywheel and bolts, without giving the final
tightening; use a 17-mm socket wrench and
handle.
Obs.:
Use new bolts.
29.
Lock the flywheel with tool S-9407182.
30.
Tighten the flywheel bolts, with a 17-mm socket
wrench and torque wrench.
Tighten
•
Bolts: 35 N
·
m (26 lb
·
ft.) + 30° + 15°.
31.
Thrust washer in the crankshaft.
32.
Thrust key in the crankshaft.
33.
Timing pulley, thrust washer and attaching bolt,
with a 17-mm socket wrench and torque wrench.
Tighten
•
Bolt: 135 N
·
m (99 lb
·
ft.) + 30° + 15°.
34.
Remove tool S-9406182 from the flywheel with a
17-mm combination wrench.
35.
Belt expander with attaching bolt, without
tightening.
36.
Camshaft timing pulley and attaching bolt, with a
22-mm wrench to lock the camshaft and a 17-
mm socket wrench with torque wrench.
Tighten
•
Bolt: 40 – 50 N
·
m (30 – 37 lb
·
ft.).
37.
Camshaft cover and attaching bolts, with a 10-
mm socket wrench and torque wrench.
Tighten
•
Bolt: 4 – 10 N
·
m (3 – 7 lb
·
ft.).
38.
Timing pulley.
Important
•
Timing pulley, keeping stretched the side
opposite to the water pump, observing the
engine RPM direction, if using the same belt.
•
Align the camshaft timing pulley mark with the
timing pulley rear cover mark.
•
Align the crankshaft timing pulley mark with the
oil pump case flange mark, on the no. 1 cylinder
combustion stroke.
•
Adjust the belt Tensioner; with a 6-mm Allen
wrench, so as to keep steady the Tensioner
shaft, loosen the Tensioner shaft attaching bolt,
use a 13-mm combination wrench until it
remains steady. With a 6-mm Allen wrench, turn
counterclockwise the Tensioner shaft up to the
NEW marking point (± 1 mm) (detail B). The
needle can move from the right side up to the
final adjusting position. Tighten the bolt with a
13-mm combination wrench; for old timing belts,
follow the same procedure, but adjusting the
belt in the “USED” position.
We recommend this change to the used belt,
which presents a different operation regarding a
new one.