Cub Cadet Yanmar 3TNV72 - Manual (Page 200)

COOLING SYSTEM
TNV IDI Service Manual 8-9
Engine Coolant Pump
Figure 8-8
2. Apply 10.8 - 14.8 psi (75 - 105 kPa;
0.75 - 1.05 kgf/cm²) to the radiator cap. The
radiator cap relief valve must open within the
specified range.
Reassembly of Engine Coolant Pump
1. Reinstall the thermostat (Figure 8-9, (1)).
Figure 8-9
2. Reinstall the thermostat cover (Figure 8-9, (2)).
Tighten the thermostat cover bolts.
3. Reinstall the temperature switch
(Figure 8-9, (3)) and a new gasket
(Figure 8-9, (4)).
4. Position the engine coolant pump on the engine
and install a new gasket (Figure 8-9, (6)). Use
a new special O-ring (Figure 8-9, (5)) on
assembly between the engine coolant pump
and the joint.
5. Reinstall the engine coolant pump bolts.
Tighten the bolts.
6. Inspect and reinstall the coolant hoses and the
temperature switch lead wire.
7. Reinstall the engine coolant pump V-pulley
(Figure 8-10, (3)), spacer (Figure 8-10, (2))
engine coolant fan (Figure 8-10, (1)) and
engine coolant fan guard (if equipped).
Figure 8-10
8. Inspect the condition of the V-belt. There must
be clearance (Figure 8-11, (1)) between the
V-belt and the bottom of the pulley groove. If
there is no clearance (Figure 8-11, (2))
between the V-belt and the bottom of the pulley
groove, replace the V-belt.
0000577A
(1)
(5)
(4)
(1)
(2)
(3)
(6)
0001959C
CAUTION
Use a new special O-ring between the
engine coolant pump and the joint. Be
sure to use the special O-ring for each
engine model. Although the O-ring
dimensions are the same as a
commercially available O-ring, the
material is different.
0000042en
(1)
(3)
(4)
(2)
0001959B
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