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Nissan Maxima QX

since 1993 release

Repair and operation of the car



Nissan Maxima QX
+ Cars of the Nissan Maxima brand
+ Maintenance instruction
+ Settings and routine maintenance
- Engine
   + SOHC engines
   + DOHC engines
   + General capital repairs of the engine
+ Cooling systems, heating
+ Power supply system and release
+ Engine electric equipment
+ Control systems of the engine
+ Transmission
+ Coupling and power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment



Engine

Specifications

Procedures of service of the engine, its not demanding extraction from the car

General parameters

Code designation of the engine
Models of 2.0 l VQ20DE
Models of 3.0 l VQ30DE(DOHC) and VG30DE(SOHC)
Number and arrangement of cylinders V6
The number of valves on the cylinder 4
Numbering of cylinders (from the GRM drive to transmission) - all engines
Back row (closest to a partition) 1-3-5
Forward row (closest to a radiator) 2-4-6
Ignition order - all engines 1-2-3-4-5-6
Engine capacity, cm 3
Models with the VG30DE engine 2960
Models with the VQ20DE engine 1995
Models with the VQ30DE engine 2988
Diameter of cylinders and course of pistons, mm
Models with the VG30DE engine 87.0 x 83.0
Models with the VQ20DE engine 76.0 x 73.3
Models with the VQ30DE engine 93.0 x 73.3
Maximum power 1), kW (h.p.)
Models with the VQ20DE engine 103 (140)/6400
Models with the VQ30DE engine till 2000. (193)/6400
Models with the VQ30DE engine since 2000. 147 (200)/6400
Maximum torque 1), Nanometer
Models with the VQ20DE engine 179/4000
Models with the VQ30DE engine till 2000. 255/3600
Models with the VQ30DE engine since 2000. 271/3600
1) According to the directive 89/49/EU;
Extent of compression
Models with the VQ20DE engine 9.5
Models with the VQ30DE engine 10.0

Scheme of an arrangement of cylinders and direction of rotation of the distributor of ignition (SOHC engines)

Scheme of an arrangement of cylinders (DOHC engines)

Camshafts and the accompanying components
SOHC engines
Axial side play of the camshaft, mm 0.03 ÷ 0.06
Diameter of axes of yokes, mm 17.988 ÷ 18.000
Diameter of openings in yokes, mm 18.007 ÷ 18.028
Landing gap of yokes on axes, mm 0.007 ÷ 0.049
DOHC engines
Axial side play of the camshaft, mm 0.115 ÷ 0.188
Gaps of valves, mm
Inlet valves 0.26 ÷ 0.34
Final valves 0.29 ÷ 0.37
Oil pump
SOHC engines
Gap between the forming surface of an external gear wheel and the case, mm 0.11 ÷ 0.20
Gap between teeths of an internal gear wheel and a crescent partition, mm 0.12 ÷ 0.23
Gap between teeths of an external gear wheel and a crescent partition, mm 0.21 ÷ 0.32
Axial side play of landing of an internal gear wheel in the case, mm 0.05 ÷ 0.09
Axial side play of landing of an external gear wheel in the case, mm 0.05 ÷ 0.011
DOHC engines
Gap between the forming surface of an external gear wheel and the case, mm
Models from 1995 to 1997 the issue. 0.114 ÷ 0.260
Models since 1998 of the issue. 0.114 ÷ 0.200
Gap between teeths of internal and external gear wheels, mm 0.18
Axial side play of landing of an internal gear wheel in the case, mm
Models from 1995 to 1997 the issue. 0.05 ÷ 0.09
Models since 1998 of the issue. 0.03 ÷ 0.07
Axial side play of landing of an external gear wheel in the case, mm
Models from 1995 to 1997 the issue. 0.03 ÷ 0.19
Models since 1998 of the issue. 0.05 ÷ 0.11
Radial gap of landing of a stupichny part of an internal gear wheel in a pump housing, mm 0.045 ÷ 0.091
Efforts of tightening of threaded connections Nanometer
SOHC engines
Bolt of a persistent plate of the camshaft 78 ÷ 88
Bolts of cogwheels of camshafts 78 ÷ 88
Bolt of a pulley of a bent shaft 123 ÷ 132
Bolts of fastening of heads of cylinders
Stage 1 29
Stage 2 59
Stage 3 To weaken all bolts as it should be, the return to a tightening order
Stage 4 29
Stage 5 54 ÷ 64
Bolts of covers of heads of cylinders 1 ÷ 3
Bolts of fastening of a driving disk 83 ÷ 93
Nuts of fastening of final collectors 18 ÷ 22
Fixture of the inlet pipeline
Bolts of fastening of the top section of the pipeline (delivery camera) 18 ÷ 22
Bolts/nut of fastening of the lower section of the pipeline
Stage 1 (all) 3 ÷ 5
Stage 2
Bolts 16 ÷ 20
Stage 3
Nuts 24 ÷ 27
Bolts/nut of fastening of the pallet of a case 7 ÷ 8
Drain stopper of the pallet of a case 29 ÷ 39
Bolts of fastening of the mesh filter of a maslozabornik 16 ÷ 21
Bolts of fastening of an arm of the mesh filter of a maslozabornik 6.3 ÷ 8.3
Bolts of fastening of the oil pump
Long 12 ÷ 16
Short 6 ÷ 7
Bolts of fastening of a cover of the oil pump 4 ÷ 5
Bolts of fastening of axes of yokes 18 ÷ 22
Nut of a natyazhitel of a gas-distributing belt 43 ÷ 58
Bolts of fastening of a cover of a gas-distributing belt 3 ÷ 5
Bolts of an assembly bracket of fastening of transmission to the engine 43 ÷ 55
Bolts of fastening of the holder of a back epiploon of a bent shaft 3 ÷ 5
Through bolts of the right forward support of a suspension bracket of the power unit 77 ÷ 98
Through bolts of the right back support of a suspension bracket of the power unit 77 ÷ 98
Through bolt of the left forward support of a suspension bracket of the power unit 64 ÷ 78
Bolts of fastening of an arm of the left forward support of a suspension bracket of the power unit 41 ÷ 52
Through bolt of the left back support of a suspension bracket of the power unit 43 ÷ 55
Lower nuts of fastening of the left back support of a suspension bracket of the power unit 43 ÷ 55
DOHC engines
Bolts of fastening of asterisks of camshafts 119 ÷ 128
Bolts of covers of bearings of camshafts
Stage 1 (at first bolts of a cover of the first bearing drag on [from 13 to 16], then it is necessary to adhere to the stipulated order) 1.96
Stage 2 6
Stage 3 9 ÷ 11.8
Bolt of a pulley of a bent shaft
Stage 1 39 ÷ 49
Stage 2 To hold on for 60 °
Bolts of fastening of heads of cylinders
Stage 1 98
Stage 2 To weaken all bolts as it should be, the return to a tightening order
Stage 3 34 ÷ 44
Stage 4 To hold on all fixture for 90 ° ÷ 95 °
Stage 5 To hold on all fixture for 90 ° ÷ 95 °
Bolts of fastening of covers of heads of cylinders
Stage 1 1 ÷ 3
Stage 2 5.4 ÷ 7.4
Bolts of fastening of a driving disk 83 ÷ 93
Nuts of fastening of final collectors 5 ÷ 6.5
Inlet pipeline
Fixture of the top section of the pipeline 18 ÷ 22
Bolts/nut of fastening of the lower section of the pipeline
Stage 1 5 ÷ 10
Stage 2 26 ÷ 31
Stage 3 Several times to repeat a stage 2
Bolts of fastening of the pallet of a case
Aluminum cast pallet 16 ÷ 19
Steel stamped pallet 6.4 ÷ 7.5
Pallet fixture to transmission 35 ÷ 47
Pallet fixture to a back cover 6.4 ÷ 7.5
Drain stopper of the pallet of a case 29 ÷ 39
Bolts of fastening of a maslozaborny tube 16 ÷ 19
Bolts of fastening of the oil pump
Models 1995 and 1996 of of the issue. 6.4 ÷ 6.6
Models since 1997 of the issue. 8.4 ÷ 10.8
Screws of fastening of a cover of the oil pump 4 ÷ 5
Bolts of fastening of a forward cover of a gas-distributing chain
Bolts of 6 mm 11.8 ÷ 13.7
Bolts of 8 mm 26 ÷ 31
Bolts of fastening of a back cover of a gas-distributing chain 11.8 ÷ 13.7
Bolts of the top guides of a gas-distributing chain 13 ÷ 19
Bolts of fastening of a natyazhitel of the main gas-distributing chain 8.4 ÷ 10.8
Axial bolt of the directing main gas-distributing chain
Bolts of fastening of a natyazhitel of a secondary gas-distributing chain 8.4 ÷ 10.8
Bolts of fastening of the holder of a back epiploon of a bent shaft 8.4 ÷ 10.8
Bolts of forward and back support of a suspension bracket of the power unit 77 ÷ 98
Bolts of fastening of arms of forward and back support of a suspension bracket of the power unit to the engine block 43 ÷ 55
Bolts of fastening of the lower cross beam to a frame 77 ÷ 98
Bolts of fastening of the top arm of the right side support of a suspension bracket of the power unit 43 ÷ 55
Bolts/nut of fastening of the right back support of a suspension bracket of the power unit 43 ÷ 55
Bolt/nut of fastening of the lower arm of the right side support of a suspension bracket of the power unit 78 ÷ 90
Procedures of the general and capital repairs of the engine
General parameters
Pressure of oil, kPa
SOHC engines
On single turns Over 59
3200 rpm 363 ÷ 451
DOHC engines
1995 ÷ 1998 of the issue.
On single turns Over 69
3000 rpm 435 ÷ 551
1999 of the issue.
On single turns Over 69
2000 rpm 390
Compression pressure in cylinders, kPa
SOHC engines
Nominal rate 1.196
Minimum admissible value 883
The maximum admissible dispersion between cylinders 98
DOHC engines
Nominal rate 1.275
Minimum admissible value 981
The maximum admissible dispersion between cylinders 98
Heads of cylinders
Extreme admissible not planeness, mm 0.1
Height of a head, mm
SOHC engines 106.8 ÷ 107.2
DOHC engines 126.3 ÷ 126.5
Components of the valvate mechanism
Gaps of landing of yokes on the axes (SOHC engines), mm 0.007 ÷ 0.049
Diameter of cores of valves, mm
SOHC engines
Inlet valves 6.965 ÷ 6.980
Final valves 7.965 ÷ 7.970
DOHC engines
Inlet valves 5.965 ÷ 5.980
Final valves 5.965 ÷ 5.960
Height of a cylindrical part (belt) of plates of valves, mm
SOHC engines
Inlet valves 1.15 ÷ 1.45
Final valves 1.35 ÷ 1.65
Extreme admissible value 0.5
DOHC engines
Inlet valves 0.95 ÷ 1.25
Final valves 1.15 ÷ 1.45
Extreme admissible value 0.5
Free length of valvate springs, mm
SOHC engines
External spring 51.2
Internal spring 44.1
DOHC engines 46.93
Extreme admissible size of violation of a tortsovka of valvate springs
SOHC engines
External spring 2.2
Internal spring 1.9
DOHC engines 2.0
Gaps of landing of valves in the directing plugs, mm
SOHC engines
Inlet valves 0.020 ÷ 0.053
Final valves 0.040 ÷ 0.073
Extreme admissible value 0.10
DOHC engines
Inlet valves 0.020 ÷ 0.053
Final valves 0.040 ÷ 0.073
Extreme admissible value
Inlet valves 0.08
Final valves 0.10
Outer diameter of pushers of valves, mm
SOHC engines 15.947 ÷ 15.957
DOHC engines 34.960 ÷ 34.975
Internal diameter of the directing plugs of pushers of valves, mm
SOHC engines 16.000 ÷ 16.013
DOHC engines 35.000 ÷ 35.021
Gap of landing of pushers in the directing plugs, mm
SOHC engines 0.043 ÷ 0.066
DOHC engines 0.025 ÷ 0.061
Camshafts
Internal diameter of bearings of camshafts, mm
SOHC engines
Bearing of a neck And 47.000 ÷ 47.025
The neck bearing In 42.500 ÷ 42.525
The neck bearing With 48.000 ÷ 48.025
DOHC engines
Bearing No. 1 26.000 ÷ 26.021
Bearings No. No. 2, 3 and 4 23.500 ÷ 23.521
Outer diameter of bearing necks of camshafts, mm
SOHC engines
Neck And 46.920 ÷ 46.940
Neck In 42.420 ÷ 42.440
Neck With 47.920 ÷ 47.940
DOHC engines
1995 ÷ 1998 of the issue.
Neck No. 1 25.935 ÷ 25.955
Necks No. No. 2, 3 and 4 23.435 ÷ 23.455
1999 of the issue.
Neck No. 1 25.935 ÷ 25.955
Necks No. No. 2, 3 and 4 23.445 ÷ 23.465
Gaps in bearings of camshafts, mm
SOHC engines
Nominal rate 0.045 ÷ 0.090
DOHC engines
1995 ё 1998 of the issue.
Nominal rate 0.045 ÷ 0.086
Extreme admissible value 0.15
1999 of the issue.
Nominal rate
Neck No. 1 0.045 ÷ 0.086
Necks No. No. 2, 3 and 4 0.035 ÷ 0.076
Extreme admissible value 0.15
Size of an axial side play of camshafts, mm
SOHC engines 0.03 ÷ 0.06
DOHC engines 0.115 ÷ 0.118
Size of a side beating of camshafts, mm
SOHC engines
Nominal rate 0.04
Extreme admissible value 0.10
DOHC engines
Nominal rate 0.02
Extreme admissible value 0.05
Height of cams of inlet and final camshafts, mm
SOHC engines
Nominal rate 39.537 ÷ 39.727
Extreme admissible value (loss of a working ledge) 0.15
DOHC engines
Nominal rate 43.940 ÷ 44.130
Extreme admissible value (loss of a working ledge) 0.20
Engine block
Extreme admissible not planeness (all engines), mm 0.10
Diameter of cylinders, mm
SOHC engines
Nominal rate 87.000 ÷ 87.030
Extreme admissible wear 0.20
DOHC engines
Nominal rate 93.000 ÷ 93.030
Extreme admissible wear 0.20
Extreme admissible ovality and conicity of cylinders (all engines), mm 0.015
Internal diameter of radical bearings, mm
SOHC engines 66.645 ÷ 66.672
DOHC engines 63.993 ÷ 64.017
Pistons and piston rings
Diameter of a skirt of the piston, mm
SOHC engines 86.965 ÷ 86.995
DOHC engines 92.980 ÷ 93.010
Gaps of landing of pistons in cylinders, mm
SOHC engines 0.015 ÷ 0.035
DOHC engines 0.01 ÷ 0.03
Side gap of landing of piston rings, mm
SOHC engines
Top compression ring
Nominal rate 0.040 ÷ 0.073
Extreme admissible value 0.10
Second compression ring
Nominal rate 0.030 ÷ 0.063
Extreme admissible value 0.10
Oil scraper ring
Nominal rate 0.015 ÷ 0.019
Extreme admissible value 0.10
DOHC engines
Top compression ring
Nominal rate 0.04 ÷ 0.08
Extreme admissible value 0.10
Second compression ring
Nominal rate 0.03 ÷ 0.07
Extreme admissible value 0.10
Oil scraper ring
Nominal rate 0.015 ÷ 0.019
Extreme admissible value 0.10
Gaps in locks of piston rings
SOHC engines
Top compression ring
Nominal rate 0.21 ÷ 0.44
Extreme admissible value 0.10
Second compression ring
Nominal rate 0.18 ÷ 0.44
Extreme admissible value 0.10
Oil scraper ring (working section)
Nominal rate 0.20 ÷ 0.76
Extreme admissible value 0.10
DOHC engines
1995 and 1996 of the issue.
Top compression ring
Nominal rate 0.22 ÷ 0.41
Extreme admissible value 0.55
Second compression ring
Nominal rate 0.50 ÷ 0.74
Extreme admissible value 0.85
Oil scraper ring (working section)
Nominal rate 0.20 ÷ 0.69
Extreme admissible value 0.95
since 1997 issue.
Top compression ring
Nominal rate 0.22 ÷ 0.32
Extreme admissible value 0.55
Second compression ring
Nominal rate 0.32 ÷ 0.47
Extreme admissible value 0.85
Oil scraper ring (working section)
Nominal rate 0.20 ÷ 0.60
Extreme admissible value 0.95
Bent shaft
Diameter of radical necks, mm
SOHC engines 62.951 ÷ 62.975
DOHC engines 59.951 ÷ 59.975
Diameter of conrod necks, mm
SOHC engines 49.955 ÷ 49.974
DOHC engines 44.956 ÷ 44.974
Extreme admissible ovality and conicity of necks, mm
SOHC engines 0.005
DOHC engines 0.002
Size of an axial side play, mm
SOHC engines
Nominal rate 0.05 ÷ 0.17
Extreme admissible value 0.30
DOHC engines
Nominal rate 0.10 ÷ 0.25
Extreme admissible value 0.30
Gaps in radical bearings, mm
SOHC engines
Nominal rate 0.028 ÷ 0.055
Extreme admissible value 0.09
DOHC engines
1995 and 1996 of the issue.
Nominal rate 0.035 ÷ 0.053
Extreme admissible value 0.065
since 1997 issue.
Nominal rate 0.012 ÷ 0.030
Extreme admissible value 0.065
Gaps in conrod bearings, mm
SOHC engines
Nominal rate 0.014 ÷ 0.054
Extreme admissible value 0.09
DOHC engines
1995 and 1996 of the issue.
Nominal rate 0.034 ÷ 0.059
Extreme admissible value 0.07
since 1997 issue.
Nominal rate 0.020 ÷ 0.045
Extreme admissible value 0.07
The size of an axial side play of landing of rods on a bent shaft (all engines), mm
Nominal rate 0.20 ÷ 0.35
Extreme admissible value 0.40
Efforts of tightening of threaded connections Nanometer
Bolts of fastening of the holder of a back epiploon of a bent shaft
SOHC engines 6.3 ÷ 8.3
DOHC engines 8.4 ÷ 10.8
Nuts of rods
SOHC engines
Stage 1 14 ÷ 16
Stage 2 59 ÷ 65
DOHC engines
Stage 1 19 ÷ 21
Stage 2 To hold on for 90 ° ÷ 95 °
Bolts of covers of radical bearings
SOHC engines 90 ÷ 100
DOHC engines
Stage 1 32 ÷ 38
Stage 2 To hold on for 90 ° ÷ 95 °