Doosan G643 LP Engine — Doosan G643 LP Engine User Manual

Exhaust Manifolds Intake Manifolds Exhaust Manifold Left Side 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) 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) G643 (E) Service Manual Chapter 3. Engine Mechanical System 35