Opel Frontera UE. Manual - part 1422

6A–65

ENGINE MECHANICAL (6VD1 3.2L)

Camshaft

Camshaft and Associated Parts

014R100028

Legend

(1) Camshaft Bracket Fixing Bolt
(2) Camshaft Bracket
(3) Camshaft Assembly Intake
(4) Camshaft Assembly Exhaust
(5) Pulley Fixing Bolt

(6) Camshaft Drive Gear Pulley
(7) Retainer Fixing Bolt
(8) Retainer
(9) Camshaft Drive Gear

(10) Oil Seal

(11) O–ring

Disassembly

1. Remove fixing bolt (5) for camshaft drive gear pulley

using the 5–8840–2447–0 universal holder.

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SECTION

6A–66

ENGINE MECHANICAL (6VD1 3.2L)

2. Remove twenty fixing bolts from inlet and exhaust

camshaft bracket on one side bank, then camshaft
brackets (2).

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3. Remove camshaft assembly (3), (4).
4. Remove three fixing bolts (7) from camshaft drive

gear retainer (8), then camshaft drive gear assembly.

5. Use the snap ring pliers to remove the snap ring(1).
6. Remove the wave washer(2), sub gear(3) and spring

camshaft gear(4) from the camshaft assembly(5).

014R100018

Legend

(1) Snap Ring
(2) Wave Washer
(3) Sub Gear
(4) Spring; Camshaft Gear
(5) Camshaft Assembly

Inspection and Repair

1. Use a micrometer to measure the cam lobe height

and uneven wear. Replace the camshaft if either the
lobe height or the uneven wear exceeds the specified
limit.

Lobe height : 44.709 mm (1.7602 in)
Uneven wear : 0.05 mm (0.0020 in)

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2. Use a micrometer to measure the diameter and the

uneven wear of the camshaft journals.
Replace the camshaft if the diameter or the uneven
wear exceeds the specified limit.

Journal Diameter
Standard : 25.972 mm–25.993 mm

(1.0225 in–1.0233 in)

Limit : 25.8 mm (1.0157 in)
Uneven wear : 0.05 mm (0.0020 in)

014RS023

SECTION

6A–67

ENGINE MECHANICAL (6VD1 3.2L)

3. Place the camshaft on V–blocks.

Slowly rotate the camshaft and measure the runout
with a dial indicator.
Replace the camshaft if the runout exceeds the
specified limit.

Runout
Limit : 0.1 mm (0.0039 in)

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4. Measure the camshaft journal oil clearance.

1. Measure the camshaft bracket housing inside

diameter.

NOTE: Tighten camshaft bracket (2) to specified torque
before measuring the camshaft bracket inside diameter.

Torque : 10 N·m (1.0 kg·m/87 lb in)

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2. Subtract the camshaft outside diameter from the

camshaft bracket housing inside diameter.

Oil Clearance
Standard : 0.027 mm–0.078 mm

(0.0011 in–0.0031 in)

Limit : 0.11 mm (0.0043 in)

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5. Replace the cylinder head and/or camshaft if the

measured oil clearance exceeds the specified limit.
1. Carefully clean the camshaft journal, the

camshaft bracket, and the cylinder head.

2. Install camshaft assembly and camshaft brackets

(2), tighten twenty bolts (1) on one side bank to
the specified torque.

Torque: 10 N·m (1.0 kg·m/87 lb in)

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SECTION

6A–68

ENGINE MECHANICAL (6VD1 3.2L)

3. Measure the camshaft thrust clearance with a dial

indicator. Replace the camshaft and/or the
cylinder head if the camshaft thrust clearance
exceeds the specified limit.

Camshaft thrust Clearance
Standard : 0.03 mm–0.08 mm

(0.0012 in.–0.0031 in.)

Limit : 0.12 mm (0.0047 mm)

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Reassembly

1. Install camshaft drive gear assembly and tighten

three bolts to specified torque.

Torque: 10 N·m (1.0 kg·m/87 lb in)

2. Install the spring ; camshaft gear(1) into the camshaft

assembly.
Ensure the clearance is between the right side of the
spring; camshaft gear (1) and the dowel pin (2).

014R100017

3. Align the dowel pin on the sub gear to the clearance of

the spring ; camshaft gear made in step 2 and install
the sub gear (3).

4. Install the wave washer (2). Use snap ring pliers to

install the snap ring (1).

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5. Tighten sub gear setting bolt.

a. Use 5–8840–2443–0 gear spring lever to pre-load

the sub gear. Turn the sub gear in a clockwise
direction until the M5 bolt hole aligns with the hole
in the camshaft driven gear.

b. Install the M5 bolt and tighten to a suitable torque to

prevent the sub gear from moving.

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6. Align the timing mark on the retainer and dowel pin of

the camshaft drive gear.

7. Install camshaft assembly and camshaft brackets,

tighten twenty bolts on one side bank to the specified
torque.
a. Apply engine oil to camshaft journal and bearing

surface of camshaft bracket.

SECTION