Timing Gear Removal; Timing Gear Inspection - Yanmar 6LPA-STP2 Service Manual

ENGINE

Timing Gear Removal

1. Remove the freshwater pump and alternator
V-belt. See Freshwater Pump Removal on
page 7-5.
2. Loosen the crankshaft pulley bolt using special
tools P/N 119770-01090 (Figure 5-188, (1))
and 119770-01120 (Figure 5-188, (2)).
NOTICE: NEVER rotate the camshaft timing
pulley. If the timing belt is disconnected and the
camshaft pulley is rotated, engine damage will
result from the piston head and intake/exhaust
valve heads contacting.
Use care when loosening the crank pulley bolt,
as it is tightened to a high torque of 44 kgf·cm,
431.50 N·m (318.2 lb-ft).
Figure 5-188
(2)
Figure 5-188
3. Remove the timing belt and pulley. See Timing
Belt Removal on page 5-69.
4. Remove the camshaft oil seal retainer. See step
11 starting in Cylinder Head Removal on
page 5-16.
5. Remove the viscous damper.
6. Remove the freshwater pump pulley.
7. Remove the pulley bolt and plate washer.
NOTICE: NEVER rotate the crankshaft pulley. If
the timing belt is disconnected and the
crankshaft or camshaft pulley is rotated, engine
damage will result from the piston head and
intake or exhaust valve heads contacting the
cylinder head.
5-80
8. Remove the crankshaft pulley using special tool
9. Remove the O-ring from the crankshaft pulley.
Figure 5-189
10. Remove the alternator adjusting bar.
11. Remove 14 bolts and pry (Figure 5-190, (1))
(1)
Figure 5-190
0005188
© 2007 Yanmar Marine International
P/N 119770-01070 (Figure 5-189, (1)).
Figure 5-189
out and remove the timing gear cover.
(1)
Figure 5-190
6LPA Service Manual
Timing Gear
(1)
0005189
0005190