Engine timing, valve train,  M110

Removal and installation of rocker arms

 

 

05—230 Removal and installation of rocker arms

 

Valve clearance
Cold engine (ca. 20 °C)
Warm engine (60 °C± 15°C)

 

Intake
0.101)
0.151)

 

Exhaust
0.25
0.30

 

“M 0.05 mm more for consistent outside temperatures below —20 °C.

 

Tightening torque
Nm
(kpm)

 

Cylinder head cover bolts and capped nuts
(0.5)

 

Special tools

 

Depressor for valve spring
m110 - 0165-1.jpg
110 589 04 61 00

 

Valve adjusting wrench, 17 mm
m110 - 0165-2.jpg
110 589 01 01 00

 

Contact grip to turn engine (Part of com­pression recorder 001 589 46 21 00)
m110 - 0165-3.jpg
001 589 46 21 08
11004 -6467

 

Note

 

1st version rocker arm, guiding surface 7 mm. 2nd version rocker arm, guiding surface 14 mm.
A 1st version rocker arm is replaced by a 2nd version rocker arm when repairing.
m110 - 0165-4.jpg
m110 - 0165-5.jpg

 

55 Q5/7S94

 

05.2-230/1 F3

 

 

 

Attention!
The rocker arms and spring clamps of engines 110 are not interchangeable with the rocker arms and spring clamps of engines 116 and 11 7.
The standard spring clamps (arrows) can be installed in engines 110, 116 and 117.
Always install rocker arms on cam from which they were removed.
m110 - 0166-1.jpg

 

Removal
m110 - 0166-2.jpg
1 Press off spring clamps with a screwdriver.

 

2 Turn crankshaft with combination tool until cam peak is up.
Never turn engine on camshafts.
m110 - 0166-3.jpg

 

3 Remove rocker arms with installation and removal tool.
m110 - 0166-4.jpg

 

05.2-230/2 F3

 

 

 

Installation
m110 - 0167-1.jpg
4   Check oil spray bore in rocker arm for plugging.
5   Coat bearing surfaces of rocker arm with oil and install rocker arm.
6   Press spring clamps into grooves of adjusting screws.
7   Adjust valve clearance (05—210).
1    Spring clamp
2    Adjusting screw
3    Threaded bushing
4    Pressure pad

 

05.2-230/3