Doosan G643E - Torque Specification

G643 (E) Service Manual Chapter 3. Engine Mechanical System 33
.....High Limit Production + 0.0257 mm (.001 in)
Exhaust
.....High Limit Production + 0.0508 mm (2.03 in)
Valve Spring Free Length..............52 mm (2.03 in)
Pressure
Closed
..... 338-374 N at 43 mm (76-84 lb. at 1.70 in)
Open
. 832-903 N at 32 mm (187-203 lb. at 1.27 in)
Installed Height
...................... 42.92-43.43 mm (1.690-1.710 in)
Valve Lift
Intake...................................10.51 mm (.414 in)
Exhaust ...............................10.87 mm (.428 in)
Torque Specification

Balance Shaft Driven Gear Bolt
.......................20 Nm (15 lbft) (Plus 35 Degrees)
Camshaft Retainer Bolt..............12 Nm (106 lbft)
Camshaft Sprocket Bolts..............28 Nm (21 lbft)
Coolant Sensor............................20 Nm (15 lbft)
Connecting Rod Nut
.......................27 Nm (20 lbft) (Plus 70 Degrees)
Crankshaft Balancer Bolt ...........100 Nm (74 lbft)
Crankshaft Bearing Cap Bolt......105 Nm (77 lbft)
Crankshaft Position Sensor Bolt.....9 Nm (80 lbft)
Crankshaft Rear Oil Seal Housing
Nut and Bolt.................................15 Nm (11 lbft)
Crankshaft Rear Oil Seal Housing Stud
......................................................4 Nm (35 lbft)
Cylinder Head Bolt
First Pass.................................30 Nm (22 lbft)
Second Pass Torque Angle all Bolts in Sequence:
Short Length Bolt........................ 55 Degrees
Medium Length Bolt.................... 65 Degrees
Long Length Bolt ........................ 75 Degrees
Distributor Clamp Bolt ..................25 Nm (18 lbft)
EGR Valve Bolt
First Pass.................................10 Nm (89 lbft)
Final Pass................................25 Nm (18 lbft)
EGR Valve Pipe Bracket Bolt .......25 Nm (18 lbft)
EGR Valve Inlet Pipe Nut.............35 Nm (26 lbft)
Engine Block Drain Plug ..............20 Nm (15 lbft)
Engine Block Oil Gallery Plug Left Rear
....................................................20 Nm (15 lb
ft)
Engine Block Oil Gallery Plug Right Rear
....................................................25 Nm (18 lbft)
Engine Block Oil Gallery Plug Left Side Rear
....................................................20 Nm (15 lbft)
Engine Front Cover Bolt.............12 Nm (106 lbft)
Exhaust Manifold Stud and Bolt
First Pass.................................15 Nm (11 lbft)
Final Pass................................30 Nm (22 lbft)
Engine Flywheel Bolt .................100 Nm (74 lbft)
Front Lift Bracket Stud .................40 Nm (30 lbft)
Ignition Coil Bolt...........................11 Nm (97 lbft)
Intake Manifold Bolts
First Pass ..................................3 Nm (27 lbft)
Second Pass ......................... 12 Nm (106 lbft)
Final Pass ............................... 15 Nm (11 lbft)
Oil Filter Bypass Valve Bolt.......... 27 Nm (20 lbft)
Oil Level Indicator Tube Bolt...... 12 Nm (106 lbft)
OIl Pan Nuts................................ 23 Nm (17 lbft)
Bolts........................................ 25 Nm (18 lbft)
Studs in Engine Block.............. 25 Nm (18 lbft)
Oil Pan Drain Plug.......................25 Nm (18 lbft)
Oil Pump Bolt ..............................90 Nm (66 lbft)
OIl Pump Cover Bolt.................. 12 N
m (106 lbft)
Oxygen Sensor Wire Support Bracket Nut
....................................................11 Nm (97 lbft)
Spark Plugs
Cylinder Head (New) ............... 30 Nm (22 lbft)
Cylinder Head (All Subsequent Installation)
................................................20 Nm (15 lbft)
Spark Plug Wire Support ........... 12 Nm (106 lbft)
Valve Lifter Guide Retainer Bolt... 16 Nm (12 lbft)
Valve Rocker Arm Cover Bolts... 12 Nm (106 lbft)
Water Outlet Bolt .........................25 Nm (18 lbft)
Water Pump Bolt ......................... 41 Nm (30 lbft)