Suzuki Grand Vitara JB416 / JB420. Manual - part 108

1D-100 Engine Mechanical: For J20 Engine

Valves and Cylinder Head Components

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Valves and Cylinder Head Removal and 
Installation

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Removal

1) Remove engine assembly from vehicle referring to 

“Engine Assembly Removal and Installation: For J20 
Engine”.

2) Remove oil pan referring to “Oil Pan and Oil Pump 

Strainer Removal and Installation: For J20 Engine in 
Section 1E”.

3) Remove cylinder head cover referring to “Cylinder 

Head Cover Removal and Installation: For J20 
Engine”.

4) Remove timing chain cover. Refer to “Timing Chain 

Cover Removal and Installation: For J20 Engine” for 
removal.

5) Remove 2nd timing chain and 1st timing chain. Refer 

to “2nd Timing Chain and Chain Tensioner Removal 
and Installation: For J20 Engine” and “1st Timing 
Chain and Chain Tensioner Removal and 
Installation: For J20 Engine” for removal.

6) Remove camshafts, tappets and shims. Refer to 

“Camshafts, Tappet and Shim Removal and 
Installation: For J20 Engine” for removal.

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1. Cylinder block

7. Valve stem seal

13. Cylinder head bolt (M6)

: Be sure to tighten cylinder head bolt (M8) after securing 
cylinder head bolt (M10).

2. Cylinder head

8. Valve spring

14. Knock pin

3. Cylinder head gasket

: Identification number provided on gasket comes 
to crankshaft pully side, facing up.

9. Valve spring retainer

: Tighten 52 N

⋅m (5.2 kgf-m, 38.0 lb-ft), 82 N⋅m (8.2 kgf-m, 59.5 

lb-ft), 0 N

⋅m (0 kgf-m, 0 lb-ft), 52 N⋅m (5.2 kgf-m, 38.0 lb-ft) 

and 103 N

⋅m (10.3 kgf-m, 74.5 lb-ft) by the specified 

procedure.

4. Intake valve

10. Valve cotter

: 11 N

⋅m (1.1 kgf-m, 8.0 lb-ft)

5. Exhaust valve

11. Valve guide

: Do not reuse.

6. Valve spring seat

12. Cylinder head bolt (M10)

: Apply engine oil to sliding surface of each part.

Engine Mechanical: For J20 Engine 1D-101

7) Loosen cylinder head bolts (M10) in such order as 

numbered in figure and remove them.

NOTE
Don’t forget to remove cylinder head bolt 
(M6) (3) as shown in figure.

 

8) Check all around cylinder head for any other parts 

required to be removed or disconnected and remove 
or disconnect whatever necessary.

9) Remove cylinder head with intake manifold, exhaust 

manifold and water outlet cap. Use lifting device, if 
necessary.

Installation

1) Match match mark (1) on crank timing sprocket and 

mating surface (2) of cylinder block and lower 
crankcase.

2) Clean mating surface of cylinder head and cylinder 

block (2). Remove oil, old gasket and dust from 
mating surface.

3) Install knock pins (3) to cylinder block.

4) Install new cylinder head gasket (1) to cylinder block. 

Identification number (6) provided on gasket comes 
to crankshaft pulley side (4), facing up (toward 
cylinder head side).

5) Install cylinder head to cylinder block.

Apply engine oil to cylinder head bolts and tighten 
them gradually as follows.
a) Tighten cylinder head bolts (M10) to 52 N

⋅m (5.2 

kgf-m, 38.0 lb-ft) according to numerical order in 
figure.

b) In the same manner as in step a), retighten 

cylinder head bolts (M10) to 82 N

⋅m (8.2 kgf-m, 

59.5 lb-ft).

c) Loosen cylinder head bolts (M10) until tightening 

torque is reduced to 0 according to numerical 
order in figure.

1. Crankshaft pulley side

2. Flywheel side

“5”

“4”

“8”

“10”

“6”

“2”

3, “1”

“9”

“11”

“7”

“3”

1

2

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5. Flywheel side

1. Crankshaft pulley side

2. Flywheel side

1. Crankshaft pulley side

2. Flywheel side

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“7”

“9”

“4”

“2”

“6”

“8”

“5”

“1”

“3”

“10”

1

2

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“4”

“3”

“7”

“9”

“5”

“1”

“8”

“10”

“6”

“2”

1

2

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1D-102 Engine Mechanical: For J20 Engine

d) Tighten cylinder head bolts (M10) to 52 N

⋅m (5.2 

kgf-m, 38.0 lb-ft) according to numerical order in 
figure.

e) In the same manner as in step b), retighten 

cylinder head bolts (M10) to 103 N

⋅m (10.3 kgf-

m, 74.5 lb-ft).

f) Tighten cylinder head bolt (M6) to specified 

torque.

Tightening torque
Cylinder head bolt (M10) (a):  Tighten 52 N

⋅m 

(5.2 kgf-m, 38.0 lb-ft), 82 N

⋅m (8.2 kgf-m, 59.5 

lb-ft), 0 N

⋅m (0 kgf-m, 0 lb-ft), 52 N⋅m (5.2 kgf-

m, 38.0 lb-ft) and 103 N

⋅m (10.3 kgf-m, 74.5 lb-

ft) by the specified procedure.
Cylinder head bolt (M6) (b):  11 N·m (1.1 kgf-
m, 8.0 lb-ft)

6) Install camshafts and tappets and shims. Refer to 

“Camshafts, Tappet and Shim Removal and 
Installation: For J20 Engine” for installation.

7) Install 1st timing chain. Refer to “1st Timing Chain 

and Chain Tensioner Removal and Installation: For 
J20 Engine” for installation.

8) Install 2nd timing chain. Refer to “2nd Timing Chain 

and Chain Tensioner Removal and Installation: For 
J20 Engine” for installation.

9) Install timing chain cover. Refer to “Timing Chain 

Cover Removal and Installation: For J20 Engine” for 
installation.

10) Check intake and exhaust valve lashes referring to 

“Valve Lash (Clearance) Inspection: For J20 
Engine”.

11) Install cylinder head cover referring to “Cylinder 

Head Cover Removal and Installation: For J20 
Engine”.

12) Install oil pan referring to “Oil Pan and Oil Pump 

Strainer Removal and Installation: For J20 Engine in 
Section 1E”.

13) Install engine assembly to vehicle referring to 

“Engine Assembly Removal and Installation: For J20 
Engine”.

Valves and Cylinder Head Disassembly and 
Assembly

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Disassembly

1) When servicing cylinder head, remove intake 

manifold, injectors, exhaust manifold and water 
outlet cap from cylinder head.

2) Using special tools, compress valve springs and 

then remove valve cotters (1) also by using special 
tool.

Special tool
(A):  09916–14510
(B):  09916–16510
(C):  09919–28610
(D):  09916–84511

1. Crankshaft pulley side

2. Flywheel side

“7”, (a)

“9”, (a) 3, “11”, (b) “4”, (a)

“2”, (a)

“6”, (a)

“8”, (a)

“5”, (a)

“1”, (a)

“3”, (a)

“10”, (a)

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Engine Mechanical: For J20 Engine 1D-103

3) Release special tool, and remove spring retainers 

and valve springs.

4) Remove valve from combustion chamber side.
5) Remove valve stem seal (1) from valve guide, and 

then valve spring seat (2).

NOTE
Do not reuse seal once disassembled. Be 
sure to use new seal when assembling.

 

6) Using special tool (Valve guide remover), drive valve 

guide out from combustion chamber side to valve 
spring side.

Special tool
(A):  09916–46020

NOTE
Do not reuse valve guide once disassembled. 
Be sure to use new valve guide (oversize) 
when assembling.

 

7) Place disassembled parts except valve stem seal 

and valve guide in order so that they can be installed 
in their original positions.

Assembly

1) Before installing valve guide into cylinder head, ream 

guide hole with special tool (11 mm reamer) so as to 
remove burrs and make it truly round.

Special tool
(A):  09916–34542
(B):  09916–38210

2) Install valve guide to cylinder head.

Heat cylinder head uniformly at a temperature of 80 
to 100 

°C (176 to 212 °F) so that head will not be 

distorted, and drive new valve guide into hole with 
special tools.
Drive in new valve guide until special tool (Valve 
guide installer) contacts cylinder head.
After installing, make sure that valve guide protrudes 
by 13.0 mm (0.51 in.) from cylinder head.

Special tool
(A):  09916–57350
(B):  09916–57340

NOTE

• Do not reuse valve guide once 

disassembled. Install new valve guide 
(Oversize).

• Intake and exhaust valve guides are 

identical.

 

Valve guide oversize
0.03 mm (0.0012 in.)

Valve guide protrusion “a” (In and Ex)
13.0 mm (0.51 in.)

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