ENGINE
5-80
6LPA Service Manual
Timing Gear
© 2007 Yanmar Marine International
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
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.
8. Remove the crankshaft pulley using special tool
P/N 119770-01070 (Figure 5-189, (1)).
9. Remove the O-ring from the crankshaft pulley.
Figure 5-189
Figure 5-189
10. Remove the alternator adjusting bar.
11. Remove 14 bolts and pry (Figure 5-190, (1))
out and remove the timing gear cover.
Figure 5-190
Figure 5-190
(1)
(2)
00051
88
(1)
00051
8
9
(1)
0005190