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Vauxhall Workshop Service and Repair Manuals

Recommended Torque Values X16XEL, Y16XE, Z16XE, X18XE1, Z18XE, Z18XEL > < Technical Data - Cylinder Head (X25XE, Y26SE)

 

Recommended Torque Values (X 25 XE, Y 26 SE)  

 

Nm  

Starter to cylinder block  

40  

Intake bridge to intake flange  

20  

Intake flange to cylinder head  

20  

Drive disc to crankshaft  

65 Nm / 48 lbf. ft. + 30 ° + 15 ° 1) 2)  

Exhaust manifold to cylinder head  

20 3)  

Oil dipstick guide tube fastening strap with coolant pipe to cylinder head  

20  

Oil filter housing cover to oil filter housing  

25  

Heat exchanger cover to heat exchanger  

30  

DIS ignition module to bracket  

8  

Attach reaction member to both reaction member brackets  

60  

  

1)  Use new fastening bolts.  

2)  Re-cut threads in crankshaft before installing drive disc.  

3)  Use new fastening nuts.  

 

 

Recommended Torque Values (Continued)  

 

Nm  

Torsional vibration damper to toothed belt drive gear  

20  

Throttle valve module to intake plenum  

8  

Throttle body to intake plenum  

8  

Attach fuel pressure regulator to fuel distributor pipe with fastening clamp.  

5  

Accelerator pedal/accelerator position sensor to bulkhead  

20 1)  

Crankshaft pulse pick-up sensor disc to crankshaft  

15 2)  

Alternator to cylinder block  

35  

Base plate for toothed belt tension roller and toothed belt guide roller to cylinder head  

40  

Auxiliary aggregate(s) support to cylinder block  

40  

Torque support bracket to adapter  

60  

  

1)  Use new fastening nuts.  

2)  Use new fastening bolt.  

 

 

Recommended Torque Values (Continued)  

 

Nm  

Secondary air non-return valve bracket to exhaust manifold  

8  

Engine damping block bracket to rear engine damping block  

45  

Engine damping block bracket to cylinder block  

35  

Intake pipe bracket to cylinder head  

20  

Rear toothed belt cover to cylinder block (M8)  

10  

Rear toothed belt cover to cylinder head and oil pump (M6)  

8  

Heat shield to exhaust manifold and to cylinder head  

20  

Heat shield for exhaust manifold / catalytic converter to intake pipe bracket  

20  

Power steering hydraulic line to intake pipe bracket  

20  

Crankshaft pulse pick-up to cylinder block  

8  

 

 

 

Recommended Torque Values (Continued)  

 

Nm  

Cable trough to oil pump and cylinder block  

8  

Wiring trough to front toothed belt cover  

8  

Assemble refrigerant lines at separation point  

7  

Refrigerant lines to compressor  

33  

Ribbed v-belt tension roller to cylinder head  

40  

Knock sensor to cylinder block  

20  

Fuel distributor pipe to intake bridge  

8  

Coolant bridge to cylinder head  

30 1)  

Coolant pump to cylinder block  

25  

Coolant pipe with oil dipstick guide tube to cylinder head  

20  

  

1)  Use new copper seal rings.  

 

 

Recommended Torque Values (Continued)  

 

Nm  

Crankshaft bearing bridge to crankshaft bearing cover  

50 Nm / 37 lbf. ft. + 60 ° + 15 ° 1)  

Crankshaft bearing cap to cylinder block  

50 Nm / 37 lbf. ft. + 60 ° + 15 ° 1) 2)  

Oxygen sensor in exhaust pipe  

30  

Shackle, power steering pump to auxiliary aggregates bracket  

20  

Steering intermediate shaft to steering gear (interior)  

22 Nm / 16 lbf. ft. + 45 ° + 15 ° 1) 3)  

Secondary air metal pipe to exhaust manifold  

20 4)  

Rear engine damping block to front axle body  

20  

Front engine damping block to engine damping block bracket  

45  

Front engine damping block to front axle body  

45  

  

1)  Use new fastening bolt.  

2)  Apply a bead of adhesive sealing compound (black) to grooves of rear crankshaft bearing cap. After assembly of crankshaft bearing cap, press in adhesive sealing compound (black) from above again until it escapes from the joints.  

3)  Re-cut thread for steering intermediate shaft before re-use. Insert new fastening bolts with screw locking compound (red). The installation time including torque check is max. 5 min.  

4)  Insert fastening bolts with assembly paste (white).  

 

 

Recommended Torque Values (Continued)  

 

Nm  

Engine vent housing to cylinder block  

8  

Engine transport shackle to cylinder head (cylinders 2-4-6)  

25  

Camshaft bearing caps to cylinder head  

8  

Camshaft sprocket to camshaft  

50 Nm / 37 lbf. ft. + 60 ° + 15 ° 1)  

Camshaft sensor to camshaft bearing cap  

8  

Oil drain plug to oil pan (with rubber seal ring)  

10  

Oil drain plug to oil pan (with metal seal ring)  

55  

Oil pressure switch to oil pump  

40  

Oil filter to cylinder block  

15  

Oil filter casing to cylinder block  

45  

  

1)  Use new fastening bolt.  

 

 

Recommended Torque Values (Continued)  

 

Nm  

Oil lines to cylinder block and heat exchanger  

30  

Oil pump to cylinder block (M6)  

8 1)  

Oil pump to cylinder block (M8)  

12 2)  

Oil pump cover to oil pump  

8  

Oil intake tube to oil pump and oil baffle plate  

8  

Oil baffle plate to crankshaft bearing bridge  

8  

Oil pan to transmission housing (M8)  

20  

Oil pan to transmission housing (M10)  

40  

Oil pan to cylinder block and oil pump  

15  

  

1)  Retighten torque 10 Nm / 7 lbf. ft.  

2)  Re-tightening torque 20 Nm / 15 lbf. ft.  

 

 

Recommended Torque Values (Continued)  

 

Nm  

Pendulum to spring strut support tube  

65 1)  

Con-rod bearing cap to con-rod  

35 Nm / 26 lbf. ft. + 45 ° + 15 ° 2)  

Power steering pump to ancillary component support  

20  

Pulley to coolant pump  

8 Nm / 6 lbf. ft. + 30 ° + 30 ° 2)  

Crankshaft pulley to power steering pump  

20 Nm / 15 lbf. ft. + 30 ° + 15 ° 2)  

Intake plenum to intake bridge  

8  

Intake manifold to intake manifold bracket  

8  

Hose clamps in intake system  

3,5 3)  

Flywheel to crankshaft  

65 Nm / 48 lbf. ft. + 30 ° + 15 ° 2) 4)  

Coolant temperature sensor to coolant bridge  

18  

  

1)  Use new fastening nuts.  

2)  Use new fastening bolt.  

3)  It is only ensured that the intake system is free of leaks, thus ensuring operational safety of the engine, if the hose clamps are tightened correctly to the prescribed tightening torque.  

4)  Re-cut threads in crankshaft before installing flywheel.  

 

 

Recommended Torque Values (Continued)  

 

Nm  

Thermostat housing to cylinder block  

20  

Switchover valve to intake plenum  

8  

Lower alternator fastening bolt to oil pump  

40  

Compressor to ancillary component support  

40  

Oil pressure regulating valve screw plug to oil pump  

40  

Closure bolt, safety valve to oil pump  

30  

Front axle body to chassis  

100 Nm / 74 lbf. ft. + 45 ° + 15 ° 1) 2) 3) 4)  

Front toothed belt cover to rear toothed belt cover  

8  

  

1)  Installation and removal with an impact screwdriver is not permissible. Note various lengths of bolts and washers.  

2)  Use new fastening bolts.  

3)  Before fitting the front axle body with drive unit: check thread of locking nuts for ease of movement, replace locking nuts if necessary - see operation "Replacement Locking Nuts" in group "A".  

4)  Insert new fastening bolts with screw locking compound (red). The installation time including torque check is max. 5 min.  

 

 

Recommended Torque Values (Continued)  

 

Nm  

Front exhaust pipe with new gaskets to exhaust manifold  

30  

Heat exchanger to cylinder block  

20  

Exhaust gas recirculation valve corrugated pipe to exhaust gas recirculation valve adapter and exhaust manifold.  

25  

Toothed belt tension roller to bracket  

20  

Toothed belt guide roller to bracket  

40  

Toothed belt guide roller to oil pump  

40  

Toothed belt drive gear to crankshaft  

250 Nm / 184 lbf. ft. + 45 ° + 15 ° 1)  

Spark plugs to cylinder head  

25  

Ignition module to cylinder head cover  

8  

Cylinder head to cylinder block  

25 Nm / 18 lbf. ft. + 90 ° + 90 ° + 90 ° + 15 ° 1) 2)  

  

1)  Use new fastening bolts.  

2)  re-tightening not required  

 

 

Recommended Torque Values (Continued)  

 

Nm  

Cylinder head cover to cylinder head  

8  

 

Recommended Torque Values X16XEL, Y16XE, Z16XE, X18XE1, Z18XE, Z18XEL > < Technical Data - Cylinder Head (X25XE, Y26SE)