Opel Omega

since 1993-1999 of release

Repair and car operation



Opel Omega
+ 1. Maintenance instruction
+ 2. Maintenance
- 3. Repair of engines
   + 3.1. SOHC engines in volume 2,0 liters
   + 3.2. DOHC engines in volume 2,0 liters
   + 3.3. Engines in volume 2,5 and 3,0 liters
   - 3.4. Partition of all petrol engines
      3.4.1. Technical characteristics
      3.4.2. Compression check
      + 3.4.3. Engine partition
      3.4.4. Auxiliary elements of the engine
      + 3.4.5. Engine
      3.4.6. Engine partition
      3.4.7. Head of cylinders and valves
      3.4.8. Pistons and rods
      3.4.9. Cranked shaft
      3.4.10. Block of cylinders
      3.4.11. Radical bearings and bearings of rods
      3.4.12. Piston rings
      3.4.13. The first start of the engine after a partition
   + 3.5. Diesel engine in volume 2,0 liters
   + 3.6. Diesel six-cylinder 2,5-liter engine
+ 4. Heating system and ventilation
+ 5. Fuel, exhaust systems
+ 6. System of start of the engine
+ 7. Ignition system
+ 8. Coupling
+ 9. Transmissions
+ 10. Main transfer, semi-axes
+ 11. Brake system
+ 12. Suspension bracket and steering
+ 13. Body
+ 14. Body electric equipment




3.4. Partition of all petrol engines

3.4.1. Technical characteristics

GENERAL INFORMATION

Engine in volume 2,0 liters
Maximum deformation of a surface of laying
0,05 mm
Height of a head of cylinders:
  – SOHC
95,75-96,25 mm
  – DOHC
134 mm
Width of a saddle of the valve:
  – SOHC:
     • the inlet
1,0-1,5 mm
     • the final
1,7-2,2 mm
  – DOHC:
     • the inlet
1,0-1,4 mm
     • the final
1,4-1,8 mm
Height of the directing plug of the valve in a head of cylinders:
  – SOHC
83,25-84,05 mm
  – DOHC
13,70-14,00 mm
Engines in volume 2,5 and 3,0 liters
Maximum deformation of a surface of laying
0,05 mm
Height of a head of cylinders
134 mm
Width of a saddle of the valve:
  – the inlet
1,0-1,4 mm
  – the final
1,4-1,8 mm
Height of the directing plug of the valve in a head of cylinders
13,7-14,0 mm

Valves and directing plugs

Engine in volume 2,0 liters
Diameter of a rod of the valve (SOHC) *:
  – the inlet:
     • nominal (GM)
6,998-7,012 mm
     • after the first rastachivaniye of the plug (0,075 mm – GM K1)
7,073-7,087 mm
     • after the second rastachivaniye of the plug (0,150 mm – GM K2)
7,148-7,162 mm
     • after the third rastachivaniye of the plug (0,250 mm – And)
7,248-7,262 mm
  – the final:
     • nominal (GM)
6,978-7,992 mm
     • after the first rastachivaniye of the plug (0,075 mm – GM K1)
7,053-7,067 mm
     • after the second rastachivaniye of the plug (0,150 mm – GM K2)
7,128-7,142 mm
     • after the third rastachivaniye of the plug (0,250 mm – And)
7,228-7,262 mm
Diameter of a rod of the valve (DOHC) *:
  – the inlet:
     • nominal (GM)
5,955-5,970 mm
     • after the first rastachivaniye of the plug (0,075 mm – GM K1)
6,030-6,045 mm
     • after the second rastachivaniye of the plug (0,150 mm – GM K2)
6,105-7,120 mm
  – the final:
     • nominal (GM)
5,945-5,960 mm
     • after the first rastachivaniye of the plug (0,075 mm – GM K1)
6,020-6,035 mm
     • after the second rastachivaniye of the plug (0,150 mm – GM K2)
6,095-6,110 mm
Palpation of a rod of the valve
less than 0,03 mm
Diameter of an opening of the directing plug of a rod of the valve:
  – SOHC:
     • the nominal
7,030-7,050 mm
     • after the first rastachivaniye of the plug (0,075 mm)
7,105-7,125 mm
     • after the second rastachivaniye of the plug (0,150 mm)
7,180-7,200 mm
     • after the third rastachivaniye of the plug (0,250 mm)
7,280-7,300 mm
  – DOHC:
     • the nominal
6,000-6,012 mm
     • after the first rastachivaniye of the plug (0,065 mm)
6,075-6,090 mm
     • after the second rastachivaniye of the plug (0,150 mm)
6,150-6,165 mm
Gap between a rod of the valve and the directing plug:
  – SOHC:
     • the inlet
0,018-0,052 mm
     • the final
0,038-0,072 mm
  – DOHC:
     • the inlet
0,030-0,057 mm
     • the final
0,040-0,067 mm
Length of the valve (SOHC):
  – the inlet:
     • standard valve
104,0-104,4 mm
     • the ground-off valve
103,6-104,0 mm
  – the final:
     • standard valve
103,75-104,25 mm
     • the ground-off valve
103,35-103,85 mm
Length of the valve (DOHC):
  – the inlet:
     • standard valve
101,9-102,3 mm
     • the ground-off valve
101,5-101,9 mm
  – the final:
     • standard valve
92,05-92,45 mm
     • the ground-off valve
91,65-92,05 mm
Height of a rod of the established valve:
  – SOHC
17,85-18,25 mm
  – DOHC:
     • standard valve
39,6-40,2 mm
     • the ground-off valve
39,239,8 mm
Diameter of a head of the valve:
  – SOHC:
     • the inlet
41,8 mm
     • the final
36,5 mm
DOHC:
     • the inlet
31,9-32,1 mm
     • the final
28,9-29,1 mm
Engines in volume 2,5 and 3,0 liters
Diameter of a rod клапана*:
  – the inlet:
     • nominal (GM)
5,955-5,970 mm
     • after the first rastachivaniye of the plug (0,075 mm – GM K1)
6,030-6,045 mm
     • after the second rastachivaniye of the plug (0,150 mm – GM K2)
6,105-6,120 mm
  – the final:
     • nominal (GM)
5,945-5,960 mm
     • after the first rastachivaniye of the plug (0,075 mm – GM K1)
6,020-6,035 mm
     • after the second rastachivaniye of the plug (0,150 mm – GM K2)
6,095-6,110 mm
Palpation of a rod of the valve
less than 0,03 mm
Diameter of an opening of the directing plug of a rod of the valve:
  – the nominal
6,000-6,012 mm
  – after the first rastachivaniye of the plug (0,075 mm)
6,075-6,090 mm
  – after the second rastachivaniye of the plug (0,150 mm)
6,150-6,165 mm
Gap between a rod of the valve and the directing plug:
  – the inlet
0,030-0,057 mm
  – the final
0,040-0,067 mm
Length of the valve:
  – the inlet:
     • standard valve
101,9-102,3 mm
     • the ground-off valve
101,5-101,9 mm
  – the final:
     • standard valve
92,05-92,45 mm
     • the ground-off valve
91,65-92,05 mm
Diameter of a head of the valve:
  – the inlet
31,9-32,1 mm
  – the final
28,9-29,1 mm

* In brackets identification number is specified.

Block of cylinders

Engines in volume 2,0 liters
Maximum deformation of a surface of laying
0,05 mm
Diameter of the cylinder:
  – the nominal:
     • class 8
85,975-85,985 mm
     • class 99
85,985-85,995 mm
     • class 00
85,995-86,005 mm
     • class 01
86,005-86,015 mm
     • class 02
86,015-86,025 mm
  – after boring (0,5 mm)
86,465-86,475 mm
Maximum ovality of the cylinder
0,013 mm
Maximum konusnost of the cylinder
0,013 mm
Engines in volume 2,5 and 3,0 liters
Maximum deformation of a surface of laying
0,05 mm
Diameter of the cylinder (2,5-liter engine):
  – the nominal:
     • class 8
81,575-81,585 mm
     • class 99
81,585-81,595 mm
     • class 00
81,595-81,605 mm
     • class 01
81,605-81,615 mm
     • class 02
81,615-81,625 mm
  – after boring (0,5 mm)
82,065-82,075 mm
Diameter of the cylinder (engine in volume 3,0 liters):
  – the nominal:
     • class 8
85,975-85,985 mm
     • class 99
85,985-85,995 mm
     • class 00
85,995-86,005 mm
     • class 01
86,005-86,015 mm
     • class 02
86,015-86,025 mm
  – after boring (0,5 mm)
86,465-86,475 mm
Maximum ovality of the cylinder
0,013 mm
Maximum konusnost of the cylinder
0,013 mm

Pistons and piston rings

Engines in volume 2,0 liters
Diameter of the piston:
  – the nominal:
     • class 8
85,945-85,955 mm
     • class 99
85,955-85,965 mm
     • class 00
85,965-85,975 mm
     • class 01
85,975-85,985 mm
     • class 02
86,985-86,995 mm
  – after boring (0,5 mm)
86,435-86,445 mm
Gap between the piston and the cylinder
0,02-0,04 mm
Trailer gaps of piston rings established in cylinders:
  – kompressionny rings
0,3-0,5 mm
  – maslosjemny ring
0,4-1,4 mm
Thickness of a piston ring:
  – kompressionny rings
1,5 mm
  – maslosjemny ring
3,0 mm
Gap between a piston ring and a ring flute:
  – kompressionny rings
0,02-0,04 mm
  – maslosjemny ring
0,01-0,03 mm
Engines in volume 2,5 and 3,0 liters
Diameter of the piston (2,5-liter engine):
  – the nominal:
     • class 8
81,540-81,550 mm
     • class 99
81,550-81,560 mm
     • class 00
81,560-81,570 mm
     • class 01
81,570-81,580 mm
     • class 02
81,580-81,040 mm
  – after boring (0,1 mm)
82,030-82,040 mm
Diameter of the piston (engine in volume 3,0 liters):
  – the nominal:
     • class 8
85,940-85,950 mm
     • class 99
85,950-85,960 mm
     • class 00
85,960-85,970 mm
     • class 01
85,970-85,980 mm
     • class 02
86,980-86,990 mm
  – after boring (0,5 mm)
86,430-86,440 mm
Gap between the piston and the cylinder
0,025-0,045 mm
Trailer gaps of piston rings established in cylinders:
  – kompressionny rings
0,3-0,5 mm
  – maslosjemny ring
0,4-1,4 mm
Thickness of a piston ring:
  – kompressionny rings
1,5 mm
  – maslosjemny ring
3,0 mm
Gap between a piston ring and a ring flute:
  – kompressionny rings
0,02-0,04 mm
  – maslosjemny ring
0,01-0,03 mm

Piston fingers

Engine in volume 2,0 liters
Diameter
20,990-21,000 mm
Length
61,2-61,8 mm
Gap between the piston and a piston finger
0,011-0,014 mm
Engines in volume 2,5 and 3,0 liters
Diameter
20,990-21,000 mm
Length:
  – 2,5 liters
55,7-56,0 mm
  – 3,0 liters
57,7-58,0 mm
Gap between the piston and a piston finger:
  – 2,5 liters
0,011-0,014 mm
  – 3,0 liters
0,001-0,015 mm
Gap between a piston finger and a rod:
  – 2,5 liters
Motionless landing
  – 3,0 liters
0,014-0,030 mm

Cranked shaft

Engines in volume 2,0 liters
Free wheeling
0,05-0,15 mm
Diameter of a neck of the radical bearing:
  – the nominal:
     • 1st group
57,974-57,981 mm
     • 2nd group
57,981-57,988 mm
     • 3-ая group
57,988-57,995 mm
  – after the first grinding (0,25 mm)
57,732-57,745 mm
  – after the second grinding (0,50 mm)
57,482-57,495 mm
Diameter of a neck of the bearing of a rod:
  – the nominal
48,970-48,988 mm
  – after the first grinding (0,25 mm)
48,720-48,738 mm
  – after the second grinding (0,50 mm)
48,470-48,488 mm
Ovality of necks of a cranked shaft
0,04 mm
Konusnost of necks
0,04 mm
Admissible palpation of a shaft
less than 0,03 mm
Working gap of the radical bearing
0,015-0,043 mm
Working gap of the bearing of a rod
0,006-0,031 mm
Engines in volume 2,5 and 3,0 liters
Free wheeling
0,01-0,76 mm
Diameter of a neck of the radical bearing:
  – the nominal
67,980-67,996 mm
  – after the first grinding (0,25 mm)
67,730-67,746мм
  – after the second grinding (0,50 mm)
67,480-67,496 mm
Diameter of a neck of the bearing of a rod:
  – 2,5 liters:
     • the nominal
48,971-48,990 mm
     • after the first grinding (0,25 mm)
48,721-48,740 mm
     • after the second grinding (0,50 mm)
48,721-48,740 mm
  – 3,0 liters:
     • the nominal
53,971-53,990 mm
     • after the first grinding (0,25 mm)
53,721-53,740 mm
     • after the second grinding (0,50 mm)
53,471-53,490 mm
Ovality of necks of a cranked shaft
0,04 mm
Konusnost of necks
0,04 mm
Admissible palpation of a shaft
less than 0,03 mm
Working gap of the radical bearing
0,014-0,043 mm
Working gap of the bearing of a rod
0,010-0,061 mm

Moments of an inhaling, N of m.

SOHC engine of 2,0 liters
Bolts of a cover of a camshaft
8
Bolt of an asterisk of a camshaft
45
Bolts of a persistent plate of a camshaft
8
Bolts of a back cover of a casing of a camshaft
8
Bolt of a cover of a rod:
  – step 1
35
  – step 2
Tighten for 45 °
  – step 3
Tighten for 15 °
Bolts of the pump of cooling liquid
25
Bolts of a ventilating tube of a case of the engine
25
Bolts of a pulley of a cranked shaft
20
Bolts of a rotor of the sensor of a cranked shaft
13
Bolt of an asterisk of a cranked shaft:
  – step 1
130
  – step 2
Tighten for 40-50 °
Bolts of a head of cylinders:
  – step 1
25
  – step 2
Tighten for 90 °
  – step 3
Tighten for 90 °
  – step 4
Tighten for 90 °
Bolts of a leading disk:
  – step 1
55
  – step 2
Tighten for 30 °
  – step 3
Tighten for 15 °
Engine and transmission fastenings:
  – left and right support:
     • a nut, fixing a support to a body
55
     • a nut, fixing a support to its arm
40
     • the bolts, support fixing an arm to the block of cylinders
60
  – back support:
     • the bolts, fixing a support to a transmission
40
     • the nuts, fixing a support to a cross-piece
20
     • the bolts, fixing a cross-piece to a body
45
Bolts of a basic arm of the engine and transmission:
  – a bolt, a fixing arm to the engine
40
  – the bolts, fixing an arm to a transmission
22
  – the bolts, fixing a transmission to the engine
60
Flywheel bolts:
  – step 1
65
  – step 2
Tighten for 30 °
  – step 3
Tighten for 15 °
Bolts of covers of radical bearings:
  – step 1
50
  – step 2
Tighten for 45 °
  – step 3
Tighten for 15 °
Oil filter
15
Oil pump:
  – fixing bolts
8
  – screws of a cover of the pump
6
  – bolt of the reduktsionny valve
50
  – bolts of a maslozaborny branch pipe
8
  – heatisolating guards of spark plugs
25
Bolts of the oil pallet:
  – fixing bolts
8
  – stopper of a drain opening of the oil pallet
55
Bolts of a cover of a gas-distributing belt:
  – external cover
4
  – back cover
6
Bolt of a natyazhitel of a gas-distributing belt
20
DOHC engine of 2,0 liters
Bolts of covers of bearings of a camshaft
8
Bolts of a cover of a camshaft
8
Bolt of an asterisk of a camshaft:
  – step 1
50
  – step 2
Tighten for 60 °
  – step 3
Tighten for 15 °
Bolts of the pump of cooling liquid
25
Bolt of a cover of a rod:
  – step 1
35
  – step 2
Tighten for 45 °
  – step 3
Tighten for 15 °
Bolts of a ventilating tube of a case of the engine
25
Bolts of system of an equilibration of a cranked shaft – engines let out since 1998 g:
  – step 1
20
  – step 2
Tighten for 45 °
Bolts of a pulley of a cranked shaft
20
Bolts of a rotor of the sensor of a cranked shaft
13
Bolt of an asterisk of a cranked shaft:
  – step 1
130
  – step 2
Tighten for 40-50 °
Bolts of a head of cylinders:
  – step 1
25
  – step 2
Tighten for 90 °
  – step 3
Tighten for 90 °
  – step 4
Tighten for 90 °
  – step 5
Tighten for 15 °
Bolts of a leading disk:
  – step 1
55
  – step 2
Tighten for 30 °
  – step 3
Tighten for 15 °
Engine and transmission fastenings:
Left and right support:
  – a nut, fixing a support to a body
55
  – a nut, fixing a support to its arm
40
  – the bolts, support fixing an arm to the block of cylinders
60
Back support:
  – the bolts, fixing a support to a transmission
40
  – the nuts, fixing a support to a cross-piece
20
  – the bolts, fixing a cross-piece to a body
45
  – the bolts, fixing a transmission to the engine:
  – the bolts, fixing a transmission to the block of cylinders
60
  – the bolts, fixing a transmission to a flange of the oil pallet (engines with the compound oil pallet)
40
Bolts of a basic arm of the engine and transmission (engines with the integral oil pallet):
  – a bolt, a fixing arm to the engine
40
  – the bolts, fixing an arm to a transmission
22
Flywheel bolts:
  – step 1
65
  – step 2
Tighten for 30 °
  – step 3
Tighten for 15 °
Bolts of covers of radical bearings:
  – step 1
50
  – step 2
Tighten for 45 °
  – step 3
Tighten for 15 °
Bolts of a cast part of the oil pallet (engines with the compound oil pallet):
  – step 1
20
  – step 2
Tighten for 45 °
Oil filter
15
Oil pump:
  – fixing bolts
8
  – screws of a cover of the pump
6
  – bolt of the reduktsionny valve
50
Bolts of a maslozaborny branch pipe:
  – engines with the integral oil pallet
8
  – engines with the compound oil pallet:
     • the bolts, fixing a maslozaborny branch pipe to a casing of the oil pump
8
     • bolts М6, fixing a maslozaborny branch pipe to a cast part of the oil pallet
10
     • bolts М8, fixing a maslozaborny branch pipe to a cast part of the oil pallet
20
Bolts of the oil pallet (oil pallet, two-piece):
  – pallet bolts:
     • step 1
8
     • step 2
Tighten for 30 °
  – bolts of a cast part of the oil pallet:
     • the bolts, fixing the block to the block of cylinders and the oil pump
20
     • the bolts, fixing the block to a transmission
40
Cap of a drain opening of the oil pallet:
  – a cap with a six-sided head
45
  – a cap with a tetrahedral head
10
Bolts of a cover of a gas-distributing belt:
  – external cover
6
  – back cover
8
Intermediate pulley of a gas-distributing belt:
  – pulley bolt
25
  – arm bolts
25
  – bolt of a natyazhitel of a gas-distributing belt
20
Engines in volume 2,5 and 3,0 liters
Bolts of a natyazhitel of an additional belt
35
Bolts of a dividing partition
8
Bolts of covers of bearings of a camshaft
8
Bolts of a cover of a camshaft
8
Bolt of the sensor of a camshaft
8
Bolt of an asterisk of a camshaft:
  – step 1
50
  – step 2
Tighten for 60 °
  – step 3
Tighten for 15 °
Bolt of a cover of a rod:
  – step 1
35
  – step 2
Tighten for 45 °
  – step 3
Tighten for 15 °
Bolts of a ventilating tube of the right block of cylinders
25
Bolt of an arm of the engine intended for fastening the lift
25
Bolts of the pump of cooling liquid
25
Bolts of a pulley of the pump of cooling liquid:
  – step 1
8
  – step 2
Tighten for 30 °
  – step 3
Tighten for 30 °
Bolts of a ventilating tube of a case of the engine
8
Bolts of a pulley of a cranked shaft
20
Bolts of a rotor of the sensor of a cranked shaft
15
Bolt of an asterisk of a cranked shaft:
  – step 1
250
  – step 2
Tighten for 45 °
  – step 3
Tighten for 15 °
Bolts of a head of cylinders:
  – step 1
25
  – step 2
Tighten for 90 °
  – step 3
Tighten for 90 °
  – step 4
Tighten for 90 °
  – step 5
Tighten for 15 °
Bolts of a branch pipe of cooling liquid of a head of cylinders
30
Bolts of a leading disk:
  – step 1
65
  – step 2
Tighten for 30 °
  – step 3
Tighten for 15 °
Engine and transmission fastenings:
Left and right support:
  – a nut, fixing a support to a body
55
  – a nut, fixing a support to its arm
40
  – the bolts, support fixing an arm to the block of cylinders
60
  – shock-absorber bolts
40
Back support:
  – the bolts, fixing a support to a transmission
40
  – the nuts, fixing a support to a cross-piece
20
  – the bolts, fixing a cross-piece to a body
45
The bolts, fixing a transmission to the engine:
  – the bolts, fixing a transmission to the block of cylinders
60
  – the bolts, fixing a transmission to a flange of the oil pallet
40
Flywheel bolts:
  – step 1
65
  – step 2
Tighten for 30 °
  – step 3
Tighten for 15 °
Bolts of the block of covers of radical bearings:
  – bolts of covers:
     • step 1
50
     • step 2
Tighten for 60 °
     • step 3
Tighten for 15 °
  – fitting of the block of covers
8
  – the bolts (М8), fixing the block of covers to the block of cylinders
20
Oil radiator:
  – cover bolts
20
  – cover nuts
30
  – bolts and nuts of connections of tubes of an oil radiator
30
Oil filter
15
Screws of a cover of the oil pump
8
Fixing bolts of the oil pump:
  – bolts М6 with an original back cover of a gas-distributing belt:
     • initial moment of an inhaling
8
     • final moment of an inhaling
10
  – bolts М6 with the modified back cover of a gas-distributing belt
10
  – bolts М8:
     • step 1
12
     • step 2
20
Bolts of a maslozaborny branch pipe
8
Bolts of a pulley of the pump of the hydraulic booster of a steering:
  – step 1
20
  – step 2
Tighten for 30 °
  – step 3
Tighten for 15 °
Bolts of the oil pallet:
  – pallet bolts:
     • step 1
8
     • step 2
Tighten for 30 °
Bolts of a cast part of the oil pallet:
The bolts, fixing a cast part to the block of cylinders and the oil pump
20
The bolts, fixing a cast part to a transmission
40
Cap of a drain opening of the oil pallet:
  – a cap with a six-sided head
55
  – a cap with a tetrahedral head
10
Bolts of a cover of a gas-distributing belt:
  – external cover
8
  – back cover:
     • bolts М6
8
     • bolts М8
10
Bolt of the bottom directing pulley of a gas-distributing belt
40
Pulley of a natyazhitel and the top directing pulley of a gas-distributing belt:
  – the bolts, fixing an arm of pulleys to the block of cylinders
40
  – nut of a pulley of a natyazhitel
20
  – a bolt of a directing pulley
40