Opel Frontera UBS. Manual - part 250

 

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Opel Frontera UBS. Manual - part 250

 

 

6A–67

ENGINE MECHANICAL

014RW023

Legend

(1) Right Bank Camshaft Drive Gear
(2) Left Bank Camshaft Drive Gear
(3) Timing Mark on Drive Gear
(4) Dowel Pin

014RW024

Legend

(1) Right Bank
(2) Left Bank

(3) Alignment Mark on Camshaft Drive Gear
(4) Alignment Mark on Camshaft
(5) Alignment Mark on Retainer

3. Tighten twenty bolts in numerical order on one

side bank as shown in the illustration.

Torque: 10 N·m (1.0 Kg·m/89 lb in)

6A–68

ENGINE MECHANICAL

014RW031

4. If the oil seal requires replacement, use the

5–8840–2445–0 to install the oil seal.

014RW034

5. Tighten bolt for camshaft drive gear pulley to the

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

Torque: 98 N·m (10.0 Kg·m/72 lb ft)

014RW060

6A–69

ENGINE MECHANICAL

Crankshaft

Crankshaft and Associated Parts

013RW009

Legend

(1) Cylinder Head Assembly
(2) Crankcase with Oil Pan
(3) Oil Pipe and O-Ring
(4) Oil Strainer and O-Ring
(5) Oil Pump Assembly
(6) Cylinder Block Side  Bolts
(7) Oil Gallery

(8) Piston and Connecting Rod Assembly
(9) Flywheel

(10) Rear Oil Seal Retainer and Oil Seal

(11) Main Bearing Cap

(12) Crankshaft
(13) Main Bearing Cap Fixing Bolts
(14) Oil Gallery Fixing Bolts

Disassembly

1. Remove cylinder head assembly (1). Refer to

“Cylinder Head” in this manual.

2. Remove crankcase with oil pan (2). Refer to “Oil Pan

and Crankcase” in this manual.

CAUTION: Take care not to damage or deform the
sealing flange surface of crankcase.

3. Remove oil pipe and O-ring (3).
4. Remove oil strainer and O-ring (4).
5. Remove oil pump assembly (5).
6. Remove crankcase side bolts (6).

6A–70

ENGINE MECHANICAL

7. Remove oil gallery (7).
8. Remove piston and connecting rod assembly (8).

Refer to “Piston, Piston Ring and Connecting Rod” in
this manual.

9. Remove flywheel (9).

10. Remove rear oil seal retainer (10).

11. Remove main bearing cap (11).

12. Remove crankshaft (12).

Inspection and Repair

1. Crankshaft

Set the dial indicator as shown in the illustration and
measure the crankshaft thrust clearance. If the thrust
clearance exceeds the specified limit, replace the
thrust bearings as a set.

Thrust Clearance
Standard : 0.06 mm–0.24 mm

(0.0024 in–0.0094 in)

Limit : 0.30 mm (0.0118 in)

015RS003

Main Bearing Clearance

1. Remove the bearing caps and measure the oil

clearance.

2. Remove the main bearing cap fixing bolts in the

sequence shown in the illustration.
Arrange the removed main bearing caps in the
cylinder number order.
Remove the main bearings.

015RS004

3. Remove the crankshaft.

Remove the main bearings.

4. Clean the upper and lower bearings as well as the

crankshaft main journal.

5. Check the bearings for damage or excessive wear.

The bearings must be replaced as a set if damage or
excessive wear is discovered during inspection.

6. Set the upper bearings and the thrust washers to their

original positions.
Carefully install the crankshaft.

7. Set the lower bearings to the bearing cap original

position.

8. Apply plastigage to the crankshaft journal unit as

shown in the illustration.

NOTE: Do not set the plastigage on the oil hole.

015RS005

9. Install main bearing caps, oil gallery and crank case

bolts in the order shown, and tighten each bolt to the
specified torque.

 

 

 

 

 

 

 

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