Doosan G643E - Page 37

G643 (E) Service Manual Chapter 3. Engine Mechanical System 35
Exhaust Manifolds
Exhaust Manifold Left Side
Exhaust Manifold Right Side
Tightening Specifications for Exhaust Manifold.
Exhaust manifold tighten bolts in two steps, begin
with the center bolts.
(1) Torque for exhaust manifold bolts
...................................................... 15 N·m (11 lb·ft)
(2) Torque for exhaust manifold bolts (second pass)
...................................................... 30 N·m (22 lb·ft)
Intake Manifolds
Tightening Specifications for Intake Manifolds
Intake manifold bolt in three steps using sequence
shown in IAGS023S
First pass ...................................... 3 N·m (27 lb·ft)
Second pass ............................. 12 N·m (106 lb·ft)
Third pass ................................... 15 N·m (11 lb·ft)