Doosan G424FE - Page 79

G424F(FE) Service Manual Chapter 3. Engine Mechanical System 77
11. With a Torx T-55 or 19-mm socket wrench,
according to the bolt and a torque wrench, give
the final tightening to the bolts, observing the
tightening sequence.
Tighten
• Bolts: 25 N·m (18 lb·ft) + 180° + 10°
12. Camshaft cover and attaching bolts, without
tightening, observing that on the left side, the
center bolts should be installed together with
bolts and spark plug cable support.
13. With a 13-mm socket wrench and torque wrench,
give the final tightening.
Tighten
• Bolts: 4 – 10 N·m (3 – 7 lb·ft.)
14. New gasket between exhaust pipe and exhaust
manifold and attaching bolts, without tightening.
15. With a 13-mm socket wrench, extension and
torque wrench; tighten.
Tighten
• Bolts: 14 – 20 N·m (10 – 15 lb·ft.)
16. Thermostat; see “Thermostat – Installation”, in
this section.
17. Hot air pipe hose, together with clamp, in the
radiator lower hose.
18. With a 7-mm socket wrench, extension and
torque wrench; tighten.
Tighten
• Clamp: 4 – 5 N·m (3 – 3,6 lb·ft)
19. Hot air pipe support, in the cylinder block, with
the attaching bolt, without tightening.
20. With a 13-mm socket wrench, extension and
torque wrench; tighten.
Tighten
• Bolt: 12 – 18 N·m (8,8 – 13 lb·ft)
21. Cab-to-hot air pipe hoses and clamp, with
special clamp pliers.
22. Radiator-to-thermostat upper hose, with its
clamp.
23. With a 6-mm socket wrench and torque wrench;
tighten.
Tighten
• Clamp: 4 – 5 N·m (3 – 3,6 lb·ft)
24. Air conditioning upper support and attaching
bolts.
25. With a Torx E12 wrench and torque wrench,
tighten the bolt attaching the upper support to the
air compressor support.
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