Suzuki Grand Vitara JB416 / JB420 / JB419. Manual — part 179

1F-13 Engine Cooling System: For Petrol Engine Model

5) Disconnect heater pipe (2) from water pump (1).
6) Remove water pump (1) from cylinder block (3).

Installation
Reverse removal procedure for installation noting the
following points.
• Use new O-ring when installing.
• Install water pump assembly to cylinder block and

tighten bolts to specified torque.

Tightening torque
Water pump bolt: 25 N·m (2.5 kgf-m, 18.0 lb-ft)

• Refill cooling system referring to Step 7) to 17) of

“Cooling System Flush and Refill: For Petrol Engine
Model”.

• Verify that there is no coolant leakage at each

connection.

Water Pump Inspection

S6JB0A1616017

CAUTION

!

Do not disassemble water pump.
If any repair is required on pump, replace it
as assembly.

Rotate water pump by hand to check for smooth
operation. If pump does not rotate smoothly or makes
abnormal noise, replace it.

Specifications

Tightening Torque Specifications

S6JB0A1617001

NOTE
The specified tightening torque is also described in the following.
“Cooling System Components: For Petrol Engine Model”

Reference:
For the tightening torque of fastener not specified in this section, refer to “Fastener Information in Section 0A”.

Special Tools and Equipment

Recommended Service Material

S6JB0A1618001

I5JB0A161016-01

I2RH0B160019-01

Fastening part

Tightening torque

Note

N

⋅m

kgf-m

lb-ft

Water pump bolt and nut

25

2.5

18.0

)

Water pump bolt

25

2.5

18.0

)

Material

SUZUKI recommended product or Specification

Note

Water tight sealant

SUZUKI Bond No.1207F

P/No.: 99000–31250

)

Engine Cooling System: For Diesel Engine Model 1F-14

For Diesel Engine Model

General Description

Cooling System Description

S6JB0A1621001

The cooling system consists of a degassing tank, a
radiator, radiator cooling fan, hoses, pipes, a water
pump, an additional heater, a turbocharger electric water
pump and a thermostat assembly.

Coolant Description

S6JB0A1621002

WARNING

!

• Do not remove degassing tank cap to

check engine coolant level; check coolant
visually at the see-through degassing tank.
Coolant should be added only to
degassing tank as necessary.

• As long as there is pressure in the cooling

system, the temperature can be
considerably higher than the boiling
temperature of the solution in the radiator
and degassing tank without causing the
solution to boil. Removal of the degassing
tank cap while engine is hot and pressure
is high will cause the solution to boil
instantaneously and possibly with
explosive force, spewing the solution over
engine, fenders and person removing cap.
If the solution contains flammable anti-
freeze such as alcohol (not recommended
for use at any time), there is also the
possibility of causing a serious fire.

• Check to make sure that engine coolant

temperature is cold before removing any
part of cooling system.

• Also be sure to disconnect negative cable

from battery terminal before removing any
part.

The coolant recovery system is standard. The coolant in
the radiator expands with heat, and the coolant is
overflowed to the reservoir.
When the system cools down, the coolant is drawn back
into the radiator.
The cooling system has been filled with a quality coolant
that is a 50/50 mixture of water and ethylene glycol
antifreeze.
This 50/50 mixture coolant solution provides freezing
protection to –36

°C (–33 °F).

• Maintain cooling system freeze protection at –36

°C (–

33

°F) to ensure protection against corrosion and loss

of coolant from boiling. This should be done even if
freezing temperatures are not expected.

• Add ethylene glycol base coolant when coolant has to

be added because of coolant loss or to provide added
protection against freezing at temperature lower than
–36

°C (–33 °F).

NOTE

• Alcohol or methanol base coolant or plain

water alone should not be used in cooling
system at any time as damage to cooling
system could occur.

• Coolant must be mixed with deminelized

water or distilled water.

Anti-freeze proportioning table

Coolant capacity
: 7.5 liters (15.85/13.2 US/lmp pt.)

Freezing temperature

°C

–36

°F

–33

Anti-freeze / Anti-
corrosion coolant
concentration

%

50

Ratio of compound to
cooling water

ltr.

3.75/3.75

US pt.

7.92/7.92

Imp pt.

6.60/6.60

1F-15 Engine Cooling System: For Diesel Engine Model

Schematic and Routing Diagram

Coolant Circulation

S6JB0A1622001

[B]

1

2

3

4

5

6

7

8

9

10

11

13

12

[A]

1

2

3

4

5

6

7

8

9

10

11

13

12

I5JB0B160001-03

[A]: When thermostat is close

4. Cylinder block and cylinder head

9. Water pump

[B]: When thermostat is open

5. Radiator

10. Turbo charger electric water pump

1. Heater core

6. Degassing tank cap

11. Turbo charger

2. Additional heater

7. Degassing tank

12. Ventilation plug

3. Thermostat

8. Heat exchanger

13. EGR cooler

Engine Cooling System: For Diesel Engine Model 1F-16

Diagnostic Information and Procedures

Engine Cooling Symptom Diagnosis

S6JB0A1624001

Condition

Possible cause

Correction / Reference Item

Engine overheats
(Radiator fan operates)

Loose or timing belt

Adjust.

Not enough coolant

Check coolant level and add as necessary.

Faulty thermostat

Replace.

Faulty water pump

Replace.

Dirty or bent radiator fins

Clean or remedy.

Coolant leakage on cooling system

Repair.

Clogged radiator

Check and replace radiator as necessary.

Faulty degassing tank cap

Replace.

Dragging brakes

Adjust brake.

Slipping clutch

Adjust or replace.

Poor charge battery

Check and replace as necessary.

Poor generation generator

Check and repair.

ECT sensor faulty

Check and replace as necessary.

Radiator cooling fan relay No.2 and/or
No.3 faulty

Check and replace as necessary.

Radiator fan motor faulty

Check and replace as necessary.

ECM faulty

Check and replace as necessary.

Wiring or grounding faulty

Repair as necessary.

Equipped with too much electric load
part(s)

Dismount.

Engine overheats
(Radiator fan does not
operate)

Fuse blown

Check 30 A fuse of relay/fuse box and check
for short circuit to ground.

Radiator cooling fan relay No.1 faulty

Check and replace as necessary.

ECT sensor faulty

Check and replace as necessary.

Radiator cooling fan motor faulty

Check and replace as necessary.

Wiring or grounding faulty

Repair as necessary.

ECM faulty

Check and replace as necessary.