Cooling System; Thermostat - Kubota WSM L3560 Workshop Manual

L3560, L4060, L4760, L5060, L5460, L6060, WSM

4. COOLING SYSTEM

[1] THERMOSTAT

This thermostat uses a wax-pellet type. When
temperature goes up, wax (6) in metal container (pellet
(5)) changes to a liquid from a solid.
The volume of the wax (6) starts to expand in this
process. As spindle (4) is fixed, pellet (5) goes down and
valve (2) goes down.
There is a jiggle valve (1) on the top depending on
the specification.
When you put coolant and thermostat is closed,
coolant can not go in easily because air at the engine
side can not go out.
The jiggle valve helps to remove air from this hole,
and then coolant can go in easily.
(1) Jiggle Valve
(2) Valve
(3) Bypass Valve
(4) Spindle
(5) Pellet
(6) Wax
1-M4
ENGINE
(A) When The Valve is Closed
(B) When The Valve is Opened
9Y1210824ENM0051US0
KiSC issued 03, 2016 A