PRODUCT INFORMATION
INDEX
DATE
Dep. 1
IM-G-C-00-001e F
January 2015
TIGHTENING TORQUES FOR GAS AND ETHANOL ENGINES
3/3
HGM 420 / 560
ITEM
REFERENCE
TIGHTENING TORQUE
Kgm. Nm.
ENGINE BLOCK
Bearing cap fixing stud
10*
98*
Bearing cap nut (See IM-C-C-10-001e)
102*
1001*
Bearing cap cross bolt (See IM-C-C-10-001e)
28*
275*
Cylinder head stud to crankcase (with Loctite 511)
5
49
MOVING PARTS
Counterweight to crankshaft capscrew
28,5*
280*
Vibration damper capscrew
14
137
Connecting rod capscrew (See IM-C-C-15-002e)
50*
491*
Crankshaft rear output flange capscrew (flywheel)
43*
421*
Flywheel capscrew
31*
304*
CYLINDER HEAD
Cylinder head nut
48*
441*
Spark plug sleeve
23
226
Rocker arm adjusting screw
10
98
Valve lifter adjusting screw
4,5
44
SPARK PLUG (See IO-G-M-33-001, IO-G-M-33-004, IO-G-M-33-007)
DISTRIBUTION
Oil pump gear fixing nut (with Loctite 243)
35
343
OTHERS
Nut for water pump impeller, main & auxiliary circuits (with
Loctite 243)
10 98
Water pump gear drive and bearing capscrew, main &
auxiliary circuits (with Loctite 243)
18 177
Engine to skid / subbase capscrew (M.20)
--
33
324
Exhaust manifold to cylinder head capscrew
4,5
44
Turbocharger to manifold nut
4,5
44
NOTE
* Oil lubricated (with plenty of motor oil)
General directive for tightening torques based on screw quality and diameter.
These values should be used unless expressly specified otherwise. See IM-C-C-00-002e.
2.1.35
O&M_2.002211.810_A_10_2016
10 98
18 177