Linde H 50 D, Service Training

Page: 13 / 282

Service Training
Page 5
Section 4.1
09.06
VALVE CLEARANCE ADJUSTMENT BY MEANS OF A TORQUE ANGLE GAUGE FROM SERIAL
NUMBER E1 X353 T 000268
In engines which are equipped with a thrust washer in the valve spring retainer (Fig. A1), the valve
clearance can only be adjusted
by means of a torque angle gauge .
This method using a torque angle gauge may also be applied for the DEUTZ engines BF6M 1012 / 2012
installed in series 353 trucks up to now, which have so far been adjusted by means of the feeler gauge
method.
Fig. A1 Valve gear with pressure disk
New method for checking and adjusting the valve clearance (with torque angle gauge)
Prerequisite: The engine must have cooled down for at least 30 minutes; oil temperature below 80 °C.
- Carry out the preparations (e.g. remove cylinder head cover).
- Turn crankshaft until valve overlap on cylinder no. 1 is reached. This means: Inlet valve starts opening,
outlet valve closes.
- Crankshaft position 1 in accordance with corresponding adjustment diagram (see "valve clearance
schematic").
- Fix magnet of torque angle gauge on cylinder head.
- Place torque anlge gauge 8190 with screw driver bit on setting screw. Use screw driver bit 8191.
Checking the valve clearance
- Put T-handle (4) on torque angle gauge (1) (Fig. 5).
- Loosen locknut (3) on rocker arm and support
setting screw (2) with T-handle against turning
(figure A5).
- Set torque angle gauge to 0 (zero) and suppport
setting screw (2) with T- handle against turning
(figure A4).
- Turn setting screw with screw driver bit clockwise
until rocker arm contacts thurst washer free from
clearance.
- Read the value (setting angle) on the torque angle
gauge.
Fig. A5