Cub Cadet 8404 - Manual (Page 85)

ENGINE SYSTEM
2-63 D615-W02 May-2003
615W2D3A
615W2D4A
615W2D5A
c. Servicing
(A) Thermostat valve opening temperature
1. Suspend the thermostat in the water by a string with
its end inserted between the valve and seat.
2. Heating the water gradually, read the temperatures
when the valve open and leave the string and when
the valve opens approx. 8 mm (0.315 in.)
3. If the measurements are not within the factory speci-
fications, replace the thermostat.
Opening
temperature Factory
spec.
71 ± 1.5 °C
(160 ± 3 °F)
at beginning
Lower than 85 °C (185 °F)
At 8 mm (0.315 in.)
Of opening
b. Disassembling and Assembling
(A) Thermostat
1. Remove the thermostat cover (2).
2. Take out the thermostat (1).
(When reassembling)
• Apply liquid gasket (Three Bond 1215 or equivalent)
to the gasket.
(B) Water pump
1. Remove the fan and fan pulley.
2. Remove the water pump body from the gear case
cover.
3. Remove the water pump flange (1).
4. Remove the impeller and water pump shaft (3).
5. Remove the impeller from the water pump shaft.
6. Remove the mechanical seal (5).
(When reassembling)
• Replace the mechanical seal (5) with new one.
(1) Thermostat (2) Thermostat Cover
(1) Water Pump Flange (4) Water Pump Body
(2) Water Pump Bearing (5) Mechanical Seal
(3) Water Pump Shaft (6) Impeller