Tightening Cylinder Heads; Checking/Adjusting Valve Clearances; (Inspections I, Ii And Iii) - BMW R 1100 S Repair Manual

Tightening cylinder heads

(Inspection I)
•
Remove cylinder head cover.
e
Caution:
Catch escaping oil.
TDC
•
Select a gear and turn the rear wheel, or set the
piston to TDC on the ignition stroke by turning
the belt pulley.
Top dead centre on ignition stroke:
•
The TDC mark is visible and the inlet and exhaust
valves in the cylinder concerned are closed.
•
Tighten cylinder head nuts.
Tightening procedure after 1 000 km (600 miles)
1. Tighten the cylinder head nuts one after the
other in diagonally opposite sequence
1.1. Slacken off one nut at a time
1.2. Tighten nut to initial torque.................... 20 Nm
1.3. Tighten nut to specified wrench angle ...... 180°
2. Release/retighten M10 screw................ 40 Nm
00.36
Checking/adjusting valve
clearances

(Inspections I, II and III)

C000210
•
Check valve clearance with feeler gauge and, if
necessary, correct with adjusting screw.
Adjust valve clearances with the engine cold
(max. 35 °C/95 °F):
Inlet ........................................... 0.15 mm (0.006 in)
Exhaust ..................................... 0.30 mm (0.012 in)
X
Tightening torque:
Locknut.......................................................... 8 Nm
•
Recheck valve clearances after adjusting. Feeler
gauge must pull through between valve stem and
adjusting screw with slight resistance.
•
Assemble in the reverse of the disassembly pro-
cedure.
e
Caution:
Make sure that gasket is correctly seated. Gaskets
and sealing faces must be free from oil or grease.
C000070
X
Tightening torque:
Cylinder head cover ....................................... 9 Nm
RS110980