Service of Nissan Sunny from 1991 to 1997 release in n-14 body.
1. Maintenance instruction
2. Maintenance
3. Engines
3.1. 1,4 and 1,6 liters petrol engine
3.2. 2,0 liters petrol engine
3.2.1. Types of repair of the engine without dismantle from the car
3.2.1.1. Specifications
3.2.1.2. Check of a compression in engine cylinders
3.2.1.3. Order of installation of the piston of the 1st cylinder in compression step VMT
3.2.1.4. Cover of a head of the block of cylinders
3.2.1.5. Crankshaft pulley
3.2.1.6. Cover of the chain drive of cam-shafts
3.2.1.7. Chain of the drive of cam-shafts
3.2.1.8. Natyazhitel of a chain, uspokoitel and asterisks of the drive
3.2.1.9. Cam-shafts
3.2.1.10. Levers of the drive of valves and hydraulic regulators
3.2.1.11. Head of cylinders
3.2.1.12. Oil pallet
3.2.1.13. Oil pump
3.2.1.14. Oil cooler
3.2.1.15. Crankshaft epiploons
3.2.1.16. Flywheel (or drive plate of the hydrotransformer)
3.2.1.17. Details of a suspension bracket of the power unit
3.2.2. Dismantle and capital repairs of the engine
3.3. Diesel engine
4. Cooling system
5. System of heating and ventilation
6. Fuel and exhaust system
7. System of launch of the engine
8. Coupling
9. Transmissions
10. Half shafts
11. Brakes
12. Suspension brackets and steering
13. Body
14. Electric equipment
 







3-2-1-1-tekhnicheskie-dannye.html

3.2.1.1. Specifications


Engine (general data)

Designation
SR
Engine code:
Injector engines with preliminary preparation of fuel mix (with a uniform nozzle)
SR20Di
Engines with direct injection of fuel:
  – Phase I models
SR20DE
  – Phase II low-specification models
SR20De
  – Phase II high-specification models
SR20DE
Working volume of cylinders
1998 cm / cube
Internal diameter of the cylinder
86,00 mm
Piston stroke
86,0 mm
Direction of rotation of the crankshaft
Clockwise (if to look on the right side of the car)
Finding of the 1st cylinder
From a gas distribution mechanism drive chain
Engine operating procedure
1–3–4–2
Extent of compression
9,8:1
Compression pressure in cylinders
Nominal rate:
  – SR20Di and SR20De engines
12,26 kgfs/cm/kV
  – SR20DE engines
12,75 kgfs/cm/kV
Maximum permissible pressure of a compression:
  – SR20Di and SR20De engines
10,30 kgfs/cm/kV
  – SR20DE engines
10,79 kgfs/cm/kV
Maximum permissible distinction of a compression in cylinders (for all engines)
1,0 kgfs/cm/kV

Cam-shaft and hydraulic regulators

Drive
From a chain
Number of support of cam-shafts
5
Axial side play of cam-shafts:
  – standard
0,055 – 0,139 mm
  – limit
0,20 mm

Sizes of cams

Inlet valves:
  – for SR20Di and SR20De engines
37,920 – 38,110 mm
  – for SR20DE engines
38,408 – 38,598 mm
Final valves (for all engines)
37,920 – 38,110 mm
Diameter of basic necks of cam-shafts
27,935 – 27,955 mm
Internal diameter of openings under basic necks of a cam-shaft in a head of the block of cylinders
28,000 – 28,021 mm
Gap in basic necks of a cam-shaft:
  – standard
0,045 – 0,086 mm
  – limit
0,12 mm
Cam-shaft beating:
  – standard
no more than 0,02 mm
  – limit
0,1 mm
Outer diameter of the hydroregulator
16,980 – 16,993 mm
Internal diameter of an opening under the hydroregulator in a head of the block of cylinders
17,000 – 17,020 mm
Gap between the hydroregulator and an opening
0,007 – 0,040 mm

Engine lubrication system

Type of the oil pump
Gear, with the drive from a crankshaft sock
The minimum pressure of oil at a working temperature of the engine:
  – idling
it is not lower than 0,78 kgfs/cm/kV
  – at 3000 rpm:
     • for SR20Di and SR20De engines
4,0 kgfs/cm/kV
     • for SR20DE engines
4,5 kgfs/cm/kV
Gaps of the oil pump:
  – a gap between the conducted gear wheel and a pump housing
0,11 – 0,20 mm
  – a gap in gearing of teeths of the leader and conducted gear wheels
no more than 0,18 mm
  – an axial side play of the conducted gear wheel
0,05 – 0,11 mm
  – axial side play of the leading gear wheel
0,05 – 0,09 mm
  – a gap between a fillet of the leading gear wheel and a cover of the oil pump
0,045 – 0,091 mm

The inhaling moments (in N. of m)

Nuts of fastening of a cover of a head of the block of cylinders
10
Bolt of fastening of a pulley of the crankshaft
147
Bolt of fastening of a cover of the chain drive of the gas-distributing mechanism
7
Nuts of fastening of a natyazhitel of a chain
8
Bolts of fastening of the leading asterisk of the crankshaft
147
Bolts of fastening of an uspokoitel of a chain
16
Bolt of an axis of a boot of a natyazhitel of a chain
16
Bolts of covers of basic necks of a cam-shaft:
Bolts of fastening of a cover of a back neck of a cam-shaft of final valves
22
Bolts of other covers
11
Bolts of fastening of a head of the block of cylinders
Main bolts:
  – 1st stage of an inhaling
39
  – 2nd stage of an inhaling
78
To completely weaken bolts and again to tighten with the next moment:
  – 3rd stage of an inhaling
39 ± 5
  – 4th stage of an inhaling
to tighten on a corner 90 – 100 °
  – 5th stage of an inhaling
to tighten on a corner 90 – 100 °
M6 bolts
7
Nuts and bolts of sections of oil pallets:
Cast section from aluminum alloy:
  – with numbers 1 – 16, an inhaling in the established sequence
18
  – with numbers 17 and 18, an inhaling in the established sequence
7
Steel stamped section
7
Drain stopper of the oil pallet
35
Bolts of the central longeron of a suspension bracket of the power unit
88
Oil pump:
  – pump cover screws
5
  – pump cover bolt
5
  – bolt of the reducing valve
60
  – bolt of the perepuskny valve
65
Central bolt of the oil cooler
39
Bolts of fastening of a flywheel (drive plate of the hydrotransformer)
88
Bolts of the holder of a back epiploon
8
Nuts of fastening of conrod covers:
  – 1st stage of an inhaling
15
  – the 2nd stage of an inhaling (at an inhaling a key with an angular scale)
to tighten on a corner 60 – 65 °
  – the 2nd stage of an inhaling (at an inhaling a dynamometer key without angular scale)
40
Bolts of covers of radical bearings
50
  – 1st stage of an inhaling
35
  – the 2nd stage of an inhaling (at an inhaling a key with an angular scale)
to tighten on a corner 45 – 50 °
  – the 2nd stage of an inhaling (at an inhaling a dynamometer key without angular scale)
78
Bolts of fastening of the engine to the check point:
  – bolts with a length less than 45 mm
19
  – bolts with a length more than 55 mm
75
Fastening of details of the right suspension bracket of the power unit:
  – bolts of fastening of an arm of a support to the engine
49
  – bolts of fastening of a support to an engine arm
55
  – coupling bolt of a support
49
Fastening of details of the left suspension bracket of the power unit:
  – coupling bolt of a support
49
  – bolts of fastening of a support of the power unit to the check point
49
Bolts of fastening of details of a forward suspension bracket of the power unit:
  – bolts of fastening of an arm of a support to the engine
49
  – fastening of a support to the central longeron (on cars the versatile person)
55
  – coupling bolt of a support
70
Bolts of fastening of details of a back suspension bracket of the power unit:
  – bolts of fastening of a back support to the central longeron
55
  – coupling bolt of a support
79
  – bolts of fastening of an arm of a support
69


3.2.1. Types of repair of the engine without dismantle from the car

3.2.1.2. Check of a compression in engine cylinders