Care and Maintenance
7
TC29
71
7.9.7 Valve lash
•
The valve lash (57/1) is tested with the engine
cold, by placing a reed gauge between the
upper part of the tappet (57/3) and the rocker
arm (57/2).
•
The correct valve lash is as follows:
Inlet valve = 0.25 mm
Exhaust valve = 0.25 mm
Cylinder no. 1 is located on the front side
of the engine breather.
Firing sequence: 1 - 3 – 4 - 2
•
Remove the valve cover.
•
Turn the crankshaft clockwise until the valves
intersect at
cylinder no. 1
.
•
The marking (57/6) on the housing and V-belt
pulley must be identical. Check the overlapping
of the valve by moving the crankshaft by
approx. 20° in both directions. The rocker arm
must not move.
•
If the rocker arm moves, the crankshaft must
be turned further by one full turn (360°).
•
In this position, check the valve lash of the
valves on cylinder no. 1.
If necessary, adjust the valve lash as follows:
⇒
Slacken the lock nut (57/4).
⇒
Using a screwdriver, adjust the setting screw
(57/5) in such a way that the correct valve lash
(57/1) is obtained when the lock nut is
tightened.
•
To adjust the other cylinders, turn the
crankshaft further by 180° each time. Order of
adjustment = Firing sequence
•
Check and adjust the valves in the same
manner as for cylinder no. 1.
•
Re-fit the valve cover.
Fig. 57-Valve lash
Summary of Contents for TC29
Page 6: ...Table of Contents TC29...
Page 22: ...3 Technical Data TC29 16 Views with canopy Fig 5 Views with canopy...
Page 34: ...3 Technical Data TC29 28...
Page 90: ...8 Operating Problems TC29 84...
Page 94: ...9 Appendix TC29 88...
