Yanmar 4BY2, Руководство по обслуживанию, Страница: 169 / 248

COOLING SYSTEM Repair
12/05
BY Service Manual 7-15
© 2009 Yanmar Marine International
12. Install spacer (Figure 7-16, (2)), remaining
O-ring (Figure 7-16, (3)) and outlet cover
(Figure 7-16, (1)).
13. Install new anode (Figure 7-16, (7)) and copper
gasket (Figure 7-16, (6)). See Check and
Replace Anodes on page 7-9.
14. Install heat exchanger. See Remove and Install
Heat Exchanger on page 7-13.
Remove and Install Coolant Pump
1. Allow the engine to cool and drain the coolant
from the engine block. See Drain and Fill
Closed Cooling System on page 7-10.
WARNING! Coolant Hazard. ALWAYS wear
eye protection and rubber gloves when you
handle Long Life engine coolant. If contact
with the eyes or skin should occur, flush
eyes and wash immediately with clean
water.
2. Remove belt guard.
3. Remove seawater pump belt and alternator
belt. See Remove and Install Alternator on
page 11-5 and Replace Seawater Pump Belt on
page 7-19.
4. Disconnect the coolant hoses from the coolant
pump cover.
5. Remove coolant pump cover bolts and coolant
pump cover from coolant pump housing
(Figure 7-17, (2)).
Note: Coolant pump cover is shown removed
for clarity Figure 7-17.
6. Remove the four coolant pump bolts
(Figure 7-17, (1)) and remove the coolant
pump.
Figure 7-17
Figure 7-17
7. Cut the coolant pump gasket at the three tabs
(Figure 7-18, (1)) then remove and clean any
residual gasket material from the engine block
and coolant pump.
NOTICE: Avoid damaging the sealing surface of
the cylinder block and coolant pump when
removing the gasket.
Figure 7-18
Figure 7-18
8. Cut the coolant pump gasket at the three tabs
(Figure 7-19, (1)) to separate it from the new
timing chain cover gasket. Check gasket fit
before proceeding.
Figure 7-19
Figure 7-19
0006647
(1)
0006524
(1)