CAUTION
- Wear appropriate work clothing, including a cap, protective goggles and protective shoes when performing any work.
- Remove contamination including dirt and corrosion before removal, installation or disassembly.
- Keep the disassembled parts in order and protect them from dust and dirt.
- Before removal, installation or disassembly, be sure to clarify the failure. Avoid unnecessary removal, installation, disassembly and replacement.
- Vehicle components are extremely hot after driving. Be wary of receiving burns from heated parts.
- Be sure to tighten fasteners including bolts and nuts to the specified torque.
- Place shop jacks or rigid racks at the specified points.
- Before disconnecting connectors of sensors or units, be sure to disconnect the ground cable from the battery.
PREPARATION TOOL
PREPARATION TOOL ILLUSTRATION TOOL NUMBER DESCRIPTION REMARKS 499977100 CRANK PULLEY WRENCH Used to stop rotation of the crank pulley when loosening or tightening crank pulley bolts. 499977500 CAM SPROCKET WRENCH Used for removing and installing intake cam sprocket. 499207400 CAM SPROCKET WRENCH Used for removing and installing exhaust cam sprocket
Scheme 94
Scheme 95
Scheme 96
Scheme 97
DETECTING CONDITION
- Engine coolant temperature is 96°C (205°F) or more.
- Vehicle speed is 19 km/h (12 MPH) or less.
FILLING OF ENGINE COOLANT
- Remove the collector cover.
- Pour cooling system conditioner through the filler neck. Cooling system protective agent: Refer to "SPECIFICATION" for the cooling system protective agent SPECIFICATION, General Descriptions .>
- Fill the engine coolant into coolant filler tank up to the filler neck position. Recommended engine coolant: Refer to "SPECIFICATION" for the recommended engine coolant. SPECIFICATION, General Descriptions .> Coolant level: Refer to "SPECIFICATION" for the recommended engine coolant. SPECIFICATION, General Descriptions .> CAUTION: Do not confuse the cap of coolant filler tank and cap of radiator. NOTE: When pouring the engine coolant, the radiator side cap must not be removed.
- Fill engine coolant into the reservoir tank up to "FULL" level.
- Close the coolant filler tank cap, and start the engine. Race 5 to 6 times at 3,000 rpm or less, then stop the engine. (Complete this operation within 40 seconds.)
- Wait for one minute after the engine stops, then open the coolant filler tank cap. If the engine coolant level drops, add engine coolant into the coolant filler tank up to the filler neck position.
- Perform the procedures 5) and 6) again.
- Install the coolant filler tank cap and reservoir tank cap properly.
- Start the engine and operate the heater at maximum hot position and the blower speed setting to "LO".
- Run the engine at 2,000 rpm or less until radiator fan starts and stops. NOTE: Be careful with the engine coolant temperature gauge to prevent overheating.
- Stop the engine and wait until the engine coolant temperature lowers to 30°C (86°F) or less.
- Open the coolant filler tank cap. If the engine coolant level drops, add engine coolant into the coolant filler tank up to the filler neck position and the reservoir tank to "FULL" level.
- Install the coolant filler tank cap and reservoir tank cap properly.
- Set the heater setting to maximum hot position and the blower speed setting to "LO" and start the engine. Perform racing at 3,000 rpm or less. If the flowing sound is heard from heater core, repeat the procedures from step 10 ).
- Install the collector cover.
RELATIONSHIP OF ENGINE COOLANT CONCENTRATION AND FREEZING TEMPERATURE
The concentration and safe operating temperature of engine coolant is shown in the diagram 1. Measuring the temperature and specific gravity of the coolant will provide this information.
[Example]
If the coolant temperature is 25°C (77°F) and its specific gravity is 1.054, the concentration is 35% (point A), the safe operating temperature is -14°C (7°F) (point B), and the freezing temperature is -20°C -4°F) (point C).
Scheme 98
- Diagram 1