Doosan G424FE - Page 97

G424F(FE) Service Manual Chapter 3. Engine Mechanical System 95
22. New cylinder head attaching bolts, in the
indicated sequence, with a Torx E55 wrench and
torque wrench.
Tighten
• Bolts: 25 N·m (18 lb·ft.) + 180° + 10°.
23. A new “O” ring in the water pump.
24. Water pump and attaching bolts, with a 6-mm
Allen wrench and torque wrench.
Tighten
• Bolts: 20 – 30 N·m (14,7 – 22 lb·ft.).
25. A new “O” ring in the thermostat housing.
26. Thermostat housing in the cylinder block and
attaching bolts, with a 13-mm socket wrench and
torque wrench.
Tighten
• Bolts: 10 – 20 N·m (7 – 15 lb·ft.).
27. Belt rear cover and bolts and one attaching nut,
with a 10-mm wrench and torque wrench.
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 tightening; use a 17-
mm wrench and handle.
Obs.: Use new bolts.
29. Attach 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: 40 – 50 N·m (30 – 37 lb·ft.).
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 box-end wrench to lock the camshaft and
a 17-mm socket wrench and torque wrench.
Tighten
• Bolt: 40 – 50 N·m (30 – 77 lb·
ft.).
37. Cam
shaft cover and attaching bolts, with a 10-
mm socket wrench and torque wrench; tighten.