Replacement Of Coolant; Water Pump; Water Inlet And Outlet Hose; Operation After Installation And Before Removal - Lifan 620 Maintenance Manual

(2) Check if the coolant is mixed with engine oil.

3. Replacement of coolant

(1) Dismantle the bolt for drainage and radiator cover in order. Discharge the coolant in the
radiator, warm air blower and engine;
(2) Dismantle the drain valve of the cylinder body, and discharge the coolant in the water-cooled
jacket;
(3) Dismantle the coolant reservoir and discharge the coolant;
(4) After the coolant is discharged, fill water from the radiator cover and clean the coolant pipeline;
(5) Screw down the drain valve of the cylinder body by a specified tightening torque: 40±5N·m.
(6) Confirm that the drain bolt of radiator has been screwed down;
(7) Install coolant reservoir;
(8) Fill the coolant to the radiator opening, and fill coolant into the reservoir to level "F";
Coolant: antifreezer G11. Total capacity: 8.5L
(9) Install the radiator cover;
(10) Start the engine and warm it up till the thermostat is opened;
(11) Stop the engine after it runs at a high speed for several times;
(12) When the engine is cool, remove the radiator cover, and then fill the coolant to the water filler
of the radiator. The coolant in reservoir should also reach level "F".
IV. Water Pump
1. Removal and installation
(1) Clean the foreign materials on the gasket by a scraper or a wire brush.

(2) Operation after installation and before removal:

Discharge and filling of coolant.
①
Removal and installation of timing belt cover.
②
(3) Install the water pump when the sealant is still damp.
Notes for installation:
2. Installation of water pump
V. Water Inlet and Outlet Hose
1. Operation after installation and before removal
(1) Discharge and filling of coolant (refer to related details in this chapter).
(2) Removal and installation of engine cover (refer to related details in this chapter).
(3) Removal and installation of lower housing plate.
(4) Removal and installation of battery and the bracket. To disassemble according to Fig. 2-81.
2. Notes for removal
(1) Disconnect the water inlet pipe and outlet pipe. Make alignment marks on the inlet and outlet
pipes of the radiator.
(2) Removal of water inlet pipe. Remove the installation bolt of the pressurizer tank resonator and
stagger the pressurizer tank resonator.
3. Notes for installation
(1) Firstly moisten the outer and inside installation surface of O ring, and then insert them.
(2) Installation of thermostat assembly (refer to details about engine)
1) Clean the foreign material on the gasket by a scraper or a wire brush.
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Smear sealant smoothly. It is not needed at some place.
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