Fav 900
Engine / Cylinder head
Checking valve timing
F
Setting and Calibration
Fav 900 chassis number 23/3001and up
20.2.2001
2010
000002
F
a
1/1
Capitel
Docu-No.
Index
Date
Version
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Checking valve timing
Text-module
Checking valve timing
Shifting of the camshaft drive gear can result in severe engine damage.
It is therefore necessary to ensure a correct fit by checking the valve timing after repair.
The above takes into consideration that tappet push rods are not distorted!
Proceed as follows:
Bullet-List
●
Fit engine actuation device to flywheel housing.
●
Remove crankcase venting pipe.
●
Accurately set valve play of 1st cylinder.
●
Actuate engine against rotating direction to approx. 40
°
C before TDP.
●
Set dial gauge onto intake valve spring retainer of 1st cylinder and set at "0".
●
Slowly turn crankshaft in rotating direction and watch the pointer:
●
Immediatey when the pointer moves, the intake valve opens.
●
Take reading from graded scale on flywheel and compare with valve timing.
Note:
By fitting a dial gauge to both intake and exhaust valve spring retainers of the 1st cylinder, it is
possible to check all valve timings and the valve stroke by continued turning of the engine. Valve
stroke desired value: 5,0 to 5,7 mm (.197 - .224").
