Group 25. Cooling System; Descri Ption - Volvo 164 1969 Service Manual

GROUP 25
COOLI NG
SYSTEM
1
2
3
4
S
6
7 -----'
8-----r-n
9 - - - ; ' - - ; -
10
11
12
Fig. 2-76. Fan coupling
VOLVO
103 268
DESCRI PTION
Fig. 2-75. Sea led cooling system
GENERAL
The engine is water-eooled and the eooling system. is
of the sea led type, see Fig. 2-75. A fan easing is
mounted asymmetrieally to keep down the noise
a so-ealled slip-eoupling type (see
Fig~
2-76) the fune-
tion of whieh is to e nsure that the fan bl. a des do not
exeeed a certain speed even if the engine speed is
exeeeded. See Fig. 2-81. The five fan blades are
mounted asymmetrieally to keep down the noise
leve!. The fan coupling consists of the easing; (11, Fig.
2-76) in whieh the plastic fan blades (12) are secured
with the bolt (2). The easing (11) has two halves which,
however, cannot be separated for repairs, the fan
coupling then being replaced complete. The hub (8)
has a light fit on the water pump flange (6) and is
loeked by means of the centre bolt {7). The hub is·
1. Washers
7. Centre bol!
2. Bol! 8. Hub
3. Oil 9. Friction material
4. Seals 10. Rubber ring
5. Washer 11. Housing
6. Flange, water pump 12. Fan blade
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