Opel Frontera UBS. Manual - part 394

 

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Opel Frontera UBS. Manual - part 394

 

 

ENGINE MECHANICAL 6A – 49

14. Piston Assembly

Refer to “Piston and connecting rod” in this Section.

13. Tappet

12. Timing Gear Case

1) Install the timing gear case to the cylinder body.

NOTE:

Take care not to twist the front oil seal.

2) Tighten the timing gear case bolt together with the

timing  gear case gasket to the specified torque.

19 (1.9/14)

N·m (kg·m/lb·ft)

3) Cut away the gasket protruding above the fitting

surfaces (as shown in the illustration).

11. Crankshaft Front Oil Seal

Use the installer to install the front oil seal 1 to
the gear case cover 2.

Oil Seal Installer: 5-8840-2061-0

Note the oil seal installation depth 3 shown in
the illustration.

Depth 3 = 1 mm (0.039 in.)

10. Camshaft

Refer to ‘Camshaft, Tappet’ in Section 6A.

9.

Camshaft Thrust Plate

Install the thrust plate to the cylinder body and
tighten the thrust plate bolts to specified torque.

18 (1.8/13)

N·m (kg·m/lb·ft)

6A – 50 ENGINE MECHANICAL

8.

Camshaft Timing Gear

1) Install the camshaft timing gear to the camshaft.

The timing gear mark ("Y - Y") must be facing
outword.

2) Tighten the timing gear to the specified torque.

64 (6.5/47)

N·m (kg·m/lb·ft)

7.

Oil Pump Assembly

Refer to ‘Oil pump’ in Section 6A2.

6.

Crankcase Assembly

Refer to ‘Crankcase’ in Section 6A2.

5.

Crankshaft Rear Oil Seal

1) Tighten the adapter to the crankshaft rear and

section with 2 bolts.

2) Insert the oil seal into the peripheral section of the

adapter,

3) Insert the sleeve into the adapter section, and 1)

tighten it with a bolt (M12 x 1.75L = 70) until the
adapter section hits the sleeve.

4) Remove the adapter and the sleeve.
5) With the seal pressed in, check the dimension of

the oil seal section.

Standard Dimension = 12.5 ± 0.3 mm
Oil Seal Installer:

5-8840-2359-0

4.

Cylinder Block Rear Plate

Tighten the cylinder block rear plate fixing bolt to the
specified torque

82 (8.4/61)

N·m (kg·m/lb·ft)

3.

Flywheel

Refer to ‘Crankshaft’ in Section 6A.

2.

Cylinder Head Gasket

1. Carefully remove carbon deposits and gasket

residue from the piston top face and the cylinder
body upper surface.

ENGINE MECHANICAL 6A – 51

2. Use a dial indicator to measure the piston head

projection at measuring points 1 and 3 on the
piston head and measuring points 2 and 4 on
the cylinder body.
Do this for each cylinder.

3. Note the highest measured value.

This will determine the cylinder head gasket
thickness.

Piston head projection must be within the range
shown in the above table.

4. Select a cylinder head gasket of the appropriate

thickness.
The difference between the highest measured pis-
ton head projection and the lowest measured piston
head projection must not exceed  mm (in).

1.

Cylinder Head Assembly

Refer to Section 6A2 ‘Cylinder head’

0.658 ~ 0.814 (0.0259 ~ 0.0320)

mm (in)

Piston Head Projection

Grade

mark

Average piston

projection

Gasket

thickness

(Reference)

A

0.658-0.712 (0.0259-0.0281)

1.60 (0.0630)

B

0.713-0.758 (0.0281-0.0299)

1.65 (0.0650)

C

0.759-0.813 (0.0299-0.0320)

1.70 (0.0670)

mm (in)

6A – 52 ENGINE MECHANICAL

MEMO

 

 

 

 

 

 

 

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