Bukh DV36/48, Руководство по ремонту

Страница: 26 / 196

009W2329-R01
C6
Replacement of rocker arm or rocker shaft
For each cylinder, a rocker arm column wit h two rocker arms for inlet valve and exhaust
valve, respectively, is fitted on a common shaft with corresponding rocker arm columns and
rocker arms for the two other cylinders.
1. Remove the top cover.
2. Unscrew the three central nuts on the rocker arm columns.
3. Lift off the shaft arrangement.
4. Knock out the tube pin and washer in one of the shaft ends.
5. Then the rocker arms and the intermediate springs can be taken out.
Reassembly is a reversal of the dismantling procedure.
Adjustment of valve lifter arrangement
Furthermore, a common shaft for decompression is fitted on the three rocker arm
columns.
For a possible removal of the shaft, remove first the pins going down on the rocker arms
at decompression, after which the shaft can be pulled out.
When adjusting, adjust the pins so that you faintly see a single groove of the pin thread
(about 1.5 mm free pin) just on the side facing the rocker arms.
When fitting the top cover, ensure that the slot in the decompression handle in the top
cover mesh with the corresponding pin on the decompression shaft.