Figure 10
V1022272
18. The condition for reading off correct compression pressure is that the valve clearance is correct. See:
214 Valves, adjusting
19. Connect compression gauge 9988539 to adapter 9998248 on the first cylinder. Run the engine with the starter
motor until the needle on the compression gauge stops (max.compression value). Repeat the procedure for the
other cylinders. On a new engine, the compression pressure is normally approx. 30 bar. Low compression pressure
on all cylinders indicates worn cylinder liners and/or worn piston rings. When comparing the compression pressure
in the different cylinders and you detect any cylinder with lower pressure, this may be due to leaking valves,
cracked piston rings, worn cylinder liner, or leaking cylinder head gasket. In case of this, Engine, overhauling should
be done. Uniformity between the cylinders' compression pressure is the most important and should not exceed
20%.
NOTE!
The parking brake must be applied when cranking the engine with the starter motor.
NOTE!
Do not run the starter motor for longer than 10 seconds at a time, with intervals of 60 seconds.
Figure 11
V1022273
Assembling
20. Remove the compression gauge 9998539 and adapters 9998248.
21. Loosen the bolts for the rocker arm shaft evenly across the entire shaft, so that the rocker arm shaft is not
subjected to transverse loading. Remove the bolts and install lifting tool 9990185 and 88880003. Carefully lift away
the rocker arm shaft.
Содержание D12D
Страница 2: ...Figure 2 Engine identification D12D ...
Страница 6: ...Figure 2 Certification decal ...
