4 cylinders + 6 cylinders 4 cylinders + 6 cylinders - Steyr Motors

ToC
01 ENGINE SERVICE MANUAL MARINE ENGINES
01.00.05 Timing adjustment procedure for
dismantled engine
Function description:
Time control of injection and valves are consistent
due to the special camshaft design (3 cams per
cylinder). During adjustment, pay attention to essential
functional elements, such as unit injector, timing
belt tension and sense of rotation of engine, in order
to achieve the required setting accuracy of injection.
A change of the timing belt tension or the sense of
rotation during adjustment always causes wrong
positioning of the injection control.For this reason it is
to be ensured that the adjusting procedure follows
the conditions of real operation.
Status for job:
* Camshaft housing cover dismantled.
* Set up crankshaft to approx. 40° crank angle
before TDC (piston; cylinder 1; in TDC) in order
to set all pistons in the engine to approximately
the same length of stroke, thus providinge open
space for the valve movement (stroke). This
ensures that the camshaft may be turned to the
desired position (injection stroke - unit injector
cylinder 1) without problems.
00.05 ill.1
* Crankshaft position with dismantled vibration
damper.
* Crankshaft position with mounted damper, if
timing belt has not been removed.
NOTE:
Before disassembly, mark the
vibration damper, with locked
crankshaft. A corresponding
marking must be made on the
timing belt cover.
* Unit injectors mounted and adjusted.
See 03.02.02 and 03.02.06.
00.05 ill.2
* Valve clearance set.
Special tool.:
2306031/4 dial gauge rail 4 cyl.
2306031/1 dial gauge rail 6 cyl. with
bossed seal surface
2306031/6 dial gauge rail 6 cyl. with
plane seal surface
2300899/0 dial gauge
2300641/1 probe pin
VR00515/0 V-belt tightener
2300711/0 open end wrench
VR00113/0 remover
2300551/2 locking pin
00.05 ill.3
Page ENGINE - 16 Z001019/0_6_July 2008