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Cooling System

The document outlines the procedures for the engine cooling system, including draining and refilling engine coolant, as well as the removal, installation, and inspection of the water pump and thermostat. It provides specific warnings and cautions regarding handling hot components to prevent burns. Additionally, it includes details on coolant levels, LLC density, and inspection standards for the water pump and thermostat.

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Ludovico do Rio
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21 views5 pages

Cooling System

The document outlines the procedures for the engine cooling system, including draining and refilling engine coolant, as well as the removal, installation, and inspection of the water pump and thermostat. It provides specific warnings and cautions regarding handling hot components to prevent burns. Additionally, it includes details on coolant levels, LLC density, and inspection standards for the water pump and thermostat.

Uploaded by

Ludovico do Rio
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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ENGINE COOLING SYSTEM

SECTION CO
CONTENTS
ENGINE COOLANT ............................................CO-2 THERMOSTAT ...................................................CO-4
Draining ..........................................................CO-2 Component Parts Location .............................CO-4
Refilling ...........................................................CO-2 Removal and Installation ................................CO-4
WATER PUMP ....................................................CO-3 Inspection .......................................................CO-5
Component Parts Location .............................CO-3
Removal and Installation ................................CO-3
Inspection .......................................................CO-3
ENGINE COOLANT
ENGINE COOLANT

Draining
WARNING:
Do not drain coolant when engine is still hot. It may cause
burns.

Remove exhaust manifold side drain plug of cylinder block and drain
the coolant in cylinder block.

Refilling
• Refer to the following for the coolant level and LLC density.

Engine coolant level [including the reservoir tank (MAX level) volume]
Unit: L (US qt, Imp qt)

Engine type TB45E

Without rear heater Approx. 11.2 (11-7/8, 9-7/8)

LLC density (%):


30 (Standard)
50 (Cold area)
• Install cylinder block drain plug.
• Apply sealant (Three Bond 1215B or equivalent) to the threads
of cylinder block drain plug.
: 34 - 44 N•m (3.5 - 4.5 kg-m, 25 - 32 ft-lb)
• Make sure that each clamp and drain plug is securely tightened.

CO-2
WATER PUMP
WATER PUMP

Component Parts Location

COM0017

Removal and Installation


PREPARATION
WARNING:
Do not drain coolant when engine is still hot. It may cause
burns.

Engine drive belts


CAUTION:
Handle water pump vane so that it does not contact with other
parts.

Inspection
• Check water pump body and vanes for severe corrosion and
dirt.
• Make sure that water pump shaft turns smoothly without
roughness.

CO-3
THERMOSTAT
THERMOSTAT

Component Parts Location

COM0016

Removal and Installation


WARNING:
Do not touch thermostat or container and hot water until they
get cold. They may cause burns.

• Install thermostat with jiggle valve facing upward.


• Make sure that thermostat flange is securely inserted to seal
ring.

COM0014

CO-4
THERMOSTAT

Inspection
WARNING:
Do not touch thermostat or container and hot water until they
get cold. They may cause burns.

• Put a thread through thermostat valve and submerge it in a


water-filled container, then heat it up while stirring the water.
• Read the water temperature when thermostat drops. This is the
valve opening temperature.
Valve opening temperature standard:
82±2°C (180±3.6°F) (Standard and cold area)
COM0015 Maximum valve lift standard:
10 mm or more/95°C (0.39 in or more/203°F)
(Standard and cold area)

CO-5

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