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REPAIR MAINTENANCE OPERATION OF MOTOR VEHICLES
Nissan Maxima QX (1993 release)

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Nissan Maxima QX
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Nissan
Maxima QX
Introduction
Operating Instructions
Adjustment and routine maintenance
Engine
Engines SOHC
Engines DOHC
Total engine overhaul
System of cooling, heating
The power supply system and release
Electric motor
Engine Control Systems
Transmission
Coupling and power shafts
Brakes
Suspension and steering
Body
Onboard electric
 


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Engine



Specifications

Procedures for engine maintenance that do not require taking it out of the car

Common parameters

Code for engine
Models 2.0 l VQ20DE
L models 3.0 VQ30DE (DOHC) and VG30DE (SOHC)
Number of cylinders V6
Number of valves per cylinder 4
Numbering of cylinders (from the timing to the transmission) - all engines
Back row (closest to the bulkhead) 1-3-5
Front row (closest to the radiator) 2-4-6
Ignition order - all engines 1-2-3-4-5-6
Engine capacity, cm3
Models with engine VG30DE 2960
Models with engine VQ20DE 1995
Models with engine VQ30DE 2988
Bore and stroke, mm
Models with engine VG30DE 87.0 x 83.0
Models with engine VQ20DE 76.0 x 73.3
Models with engine VQ30DE 93.0 x 73.3
Maximum capacity 1) kW (hp)
Models with engine VQ20DE 103 (140) / 6400
Models with engine VQ30DE until 2000 (193) / 6400
Models with engine VQ30DE 2000 147 (200) / 6400
Maximum torque 1) in Nm
Models with engine VQ20DE 179/4000
Models with engine VQ30DE until 2000 255/3600
Models with engine VQ30DE 2000 271/3600
1) In accordance with Directive 89/49 / EC;
Compression ratio
Models with engine VQ20DE 9.5
Models with engine VQ30DE 100

Arrangement of cylinders and direction of rotation of the distributor of ignition (engines SOHC)

Arrangement of cylinders (engines DOHC)

Camshafts and related components
Engines SOHC
Endplay camshaft mm 0.03 ÷ 0.06
The diameter of the rocker arm axes, mm 17.988 ÷ 18.000
The diameter of the holes in the yokes, mm 18.007 ÷ 18.028
Landing clearance rockers on the axes, mm 0.007 ÷ 0.049
Engines DOHC
Endplay camshaft mm 0.115 ÷ 0.188
Valve clearance, mm
The intake valves 0.26 ÷ 0.34
The exhaust valves 0.29 ÷ 0.37
Oil pump
Engines SOHC
The gap between the image surface of the outer gear and the casing, mm 0.11 ÷ 0.20
The gap between the teeth of the inner rotor and the crescent wall, mm 0.12 ÷ 0.23
The gap between the teeth of the outer gear and crescent wall, mm 0.21 ÷ 0.32
Axial internal clearance landing gear housing, mm 0.05 ÷ 0.09
Endplay landing gear in the outer casing, mm 0.05 ÷ 0.011
Engines DOHC
The gap between the image surface of the outer gear and the casing, mm
Models from 1995 to 1997 Vol. 0.114 ÷ 0.260
Models 1998 Vol. 0.114 ÷ 0.200
The gap between the teeth of the inner and outer gears, mm 0.18
Axial internal clearance landing gear housing, mm
Models from 1995 to 1997 Vol. 0.05 ÷ 0.09
Models 1998 Vol. 0.03 ÷ 0.07
Endplay landing gear in the outer casing, mm
Models from 1995 to 1997 Vol. 0.03 ÷ 0.19
Models 1998 Vol. 0.05 ÷ 0.11
Radial clearance landing Hub of the internal gear pump casing, mm 0.045 ÷ 0.091
Efforts of a tightening of carving connections Nm
Engines SOHC
Bolt persistent plate of a camshaft 78 ÷ 88
Bolts gears camshafts 78 ÷ 88
Bolt crankshaft pulley 123 ÷ 132
Bolts cylinder head
Step 1 29
Step 2 59
Step 3 Loosen all the bolts in the reverse order tightening
Step 4 29
Step 5 54 ÷ 64
Bolts cylinder head covers 1 ÷ 3
Bolts disk drive 83 ÷ 93
Nuts of fastening of exhaust manifolds 18 ÷ 22
Fixing the inlet pipeline
Bolts of fastening of the top section of the pipeline (pumping chamber) 18 ÷ 22
Bolts / nuts lower section of the pipeline
Stage 1 (all) 3 ÷ 5
Step 2
Bolts 16 ÷ 20
Step 3
Nuts 24 ÷ 27
Bolts / nuts oil pan 7 ÷ 8
Drain plug oil pan 29 ÷ 39
Bolts strainer maslozabornika 16 ÷ 21
Bracket bolts strainer maslozabornika 6.3 ÷ 8.3
Bolts of fastening of the oil pump
Long 12 ÷ 16
Short 6 ÷ 7
Cover bolts of the oil pump 4 ÷ 5
Bolts axes rocker 18 ÷ 22
Timing belt tensioner nut 43 ÷ 58
Cover bolts timing belt 3 ÷ 5
Bolts mounting bracket to the engine transmission 43 ÷ 55
Bolts of the crankshaft rear oil seal 3 ÷ 5
Through bolt right front strut suspension of the power unit 77 ÷ 98
Through bolt right back support suspension of the power unit 77 ÷ 98
Through bolt Left Front Mount power unit 64 ÷ 78
Bolts of bracket left Front Mount power unit 41 ÷ 52
Through bolt of the left rear suspension support of the power unit 43 ÷ 55
Lower nuts left rear suspension support of the power unit 43 ÷ 55
Engines DOHC
Bolts of asterisks of camshafts 119 ÷ 128
Bolts of covers of bearings of camshafts
Stage 1 (first cap bolts are tightened first bearing [13 to 16], and should adhere to the agreed order) 1.96
Step 2 6
Step 3 9 ÷ 11.8
Bolt crankshaft pulley
Step 1 39 ÷ 49
Step 2 To hold a further 60 ?�
Bolts cylinder head
Step 1 98
Step 2 Loosen all the bolts in the reverse order tightening
Step 3 34 ÷ 44
Step 4 To hold all hardware for 90 ?� ÷ 95 ?�
Step 5 To hold all hardware for 90 ?� ÷ 95 ?�
Bolts cylinder head covers
Step 1 1 ÷ 3
Step 2 5.4 ÷ 7.4
Bolts disk drive 83 ÷ 93
Nuts of fastening of exhaust manifolds 5 ÷ 6.5
The inlet pipe
Fixing the upper section of the pipeline 18 ÷ 22
Bolts / nuts lower section of the pipeline
Step 1 5 ÷ 10
Step 2 26 ÷ 31
Step 3 Several repeat step 2
Sump bolts
The aluminum die-cast tray 16 ÷ 19
Fabricated steel pan 6.4 ÷ 7.5
Fasteners pan to the transmission 35 ÷ 47
Fasteners tray to the back cover 6.4 ÷ 7.5
Drain plug oil pan 29 ÷ 39
Bolts maslozabornoy tube 16 ÷ 19
Bolts of fastening of the oil pump
Models 1995 and 1996 Vol. 6.4 ÷ 6.6
Models 1997 Vol. 8.4 ÷ 10.8
Screws oil pump 4 ÷ 5
Bolts that secure the front cover of the gas distribution chain
6 mm bolts 11.8 ÷ 13.7
Bolts 8 mm 26 ÷ 31
Bolts of fastening the back cover of the gas distribution chain 11.8 ÷ 13.7
Bolts top guides the gas distribution chain 13 ÷ 19
Bolts main gas distribution chain tensioner 8.4 ÷ 10.8
Axial bolt guide main gas distribution chain
Bolts secondary gas distribution chain tensioner 8.4 ÷ 10.8
Bolts of the crankshaft rear oil seal 8.4 ÷ 10.8
Bolts for the front and rear suspension supports the power unit 77 ÷ 98
Bracket bolts the front and rear suspension supports the power unit to the engine block 43 ÷ 55
Bolts lower transverse beam to the frame 77 ÷ 98
Bolts upper right side of the support bracket of the power unit suspension 43 ÷ 55
Bolts / nuts right rear suspension support of the power unit 43 ÷ 55
Bolt / nut fastening bottom bracket right lateral support suspension of the power unit 78 ÷ 90
Procedure of the general and engine major repairs
Common parameters
Oil pressure, kPa
Engines SOHC
At idle More than 59
3200 rev / min 363 ÷ 451
Engines DOHC
1995 ÷ 1998 the Vol.
At idle More than 69
3000 rev / min 435 ÷ 551
1999 Vol.
At idle More than 69
2000 rev / min 390
Compression cylinder pressure, kPa
Engines SOHC
Nominal value 1.196
The minimum allowable value 883
The maximum allowable variation between the cylinders 98
Engines DOHC
Nominal value 1.275
The minimum allowable value 981
The maximum allowable variation between the cylinders 98
Cylinder heads
Maximum permissible flatness mm 0.1
Head height, mm
Engines SOHC 106.8 ÷ 107.2
Engines DOHC 126.3 ÷ 126.5
The components of the valve mechanism
Clearances landing rockers on their axes (engines SOHC), mm 0.007 ÷ 0.049
The diameter of the valve stem, mm
Engines SOHC
The intake valves 6.965 ÷ 6.980
The exhaust valves 7.965 ÷ 7.970
Engines DOHC
The intake valves 5.965 ÷ 5.980
The exhaust valves 5.965 ÷ 5.960
The height of the cylindrical part (belt) plates of valves, mm
Engines SOHC
The intake valves 1.15 ÷ 1.45
The exhaust valves 1.35 ÷ 1.65
The limit value 0.5
Engines DOHC
The intake valves 0.95 ÷ 1.25
The exhaust valves 1.15 ÷ 1.45
The limit value 0.5
Free length of the valve springs, mm
Engines SOHC
External spring 51.2
An internal spring 44.1
Engines DOHC 46.93
Maximum permissible value violations trim valve springs
Engines SOHC
External spring 2.2
An internal spring 19
Engines DOHC 20
Clearances landing valve guide bushings, mm
Engines SOHC
The intake valves 0.020 ÷ 0.053
The exhaust valves 0.040 ÷ 0.073
The limit value 0.10
Engines DOHC
The intake valves 0.020 ÷ 0.053
The exhaust valves 0.040 ÷ 0.073
The limit value
The intake valves 0.08
The exhaust valves 0.10
The outer diameter of the valve lifters, mm
Engines SOHC 15.947 ÷ 15.957
Engines DOHC 34.960 ÷ 34.975
The inner diameter of the valve tappets guides, mm
Engines SOHC 16.000 ÷ 16.013
Engines DOHC 35.000 ÷ 35.021
Gap planting pushers in directing plugs, mm
Engines SOHC 0.043 ÷ 0.066
Engines DOHC 0.025 ÷ 0.061
Camshafts
The inner diameter of the camshaft bearing, mm
Engines SOHC
A journal bearing 47.000 ÷ 47.025
Bearing in neck 42.500 ÷ 42.525
Bearing neck With 48.000 ÷ 48.025
Engines DOHC
Bearing number 1 26.000 ÷ 26.021
Bearings ?��?�� 2, 3 and 4 23.500 ÷ 23.521
The outer diameter of the bearing journals of the camshaft, mm
Engines SOHC
And Neck 46.920 ÷ 46.940
The cervix 42.420 ÷ 42.440
Neck C 47.920 ÷ 47.940
Engines DOHC
1995 ÷ 1998 the Vol.
Sheika number 1 25.935 ÷ 25.955
Cervical ?��?�� 2, 3 and 4 23.435 ÷ 23.455
1999 Vol.
Sheika number 1 25.935 ÷ 25.955
Cervical ?��?�� 2, 3 and 4 23.445 ÷ 23.465
The gaps in the camshaft bearing, mm
Engines SOHC
Nominal value 0.045 ÷ 0.090
Engines DOHC
1995 e 1998 the Vol.
Nominal value 0.045 ÷ 0.086
The limit value 0.15
1999 Vol.
Nominal value
Sheika number 1 0.045 ÷ 0.086
Cervical ?��?�� 2, 3 and 4 0.035 ÷ 0.076
The limit value 0.15
The magnitude of the axial backlash camshaft mm
Engines SOHC 0.03 ÷ 0.06
Engines DOHC 0.115 ÷ 0.118
The amount of lateral runout camshafts, mm
Engines SOHC
Nominal value 0.04
The limit value 0.10
Engines DOHC
Nominal value 0.02
The limit value 0.05
Height of cams of inlet and exhaust camshafts, mm
Engines SOHC
Nominal value 39.537 ÷ 39.727
The limit value (operating loss projection) 0.15
Engines DOHC
Nominal value 43.940 ÷ 44.130
The limit value (operating loss projection) 0.20
Engine block
Maximum permissible flatness (all engines), mm 0.10
Bore, mm
Engines SOHC
Nominal value 87.000 ÷ 87.030
The maximum permissible wear 0.20
Engines DOHC
Nominal value 93.000 ÷ 93.030
The maximum permissible wear 0.20
Limit permissible roundness and taper of cylinder (all engines), mm 0.015
The inner diameter of the crankshaft bearing, mm
Engines SOHC 66.645 ÷ 66.672
Engines DOHC 63.993 ÷ 64.017
Pistons and piston rings
The diameter of the piston skirt, mm
Engines SOHC 86.965 ÷ 86.995
Engines DOHC 92.980 ÷ 93.010
Clearances landing pistons in the cylinders, mm
Engines SOHC 0.015 ÷ 0.035
Engines DOHC 0.01 ÷ 0.03
Side clearance fit piston rings, mm
Engines SOHC
The top compression ring
Nominal value 0.040 ÷ 0.073
The limit value 0.10
The second compression ring
Nominal value 0.030 ÷ 0.063
The limit value 0.10
Scraper ring
Nominal value 0.015 ÷ 0.019
The limit value 0.10
Engines DOHC
The top compression ring
Nominal value 0.04 ÷ 0.08
The limit value 0.10
The second compression ring
Nominal value 0.03 ÷ 0.07
The limit value 0.10
Scraper ring
Nominal value 0.015 ÷ 0.019
The limit value 0.10
Backlash in the lock of piston rings
Engines SOHC
The top compression ring
Nominal value 0.21 ÷ 0.44
The limit value 0.10
The second compression ring
Nominal value 0.18 ÷ 0.44
The limit value 0.10
Scraper ring (operating section)
Nominal value 0.20 ÷ 0.76
The limit value 0.10
Engines DOHC
In 1995 and 1996 Vol.
The top compression ring
Nominal value 0.22 ÷ 0.41
The limit value 0.55
The second compression ring
Nominal value 0.50 ÷ 0.74
The limit value 0.85
Scraper ring (operating section)
Nominal value 0.20 ÷ 0.69
The limit value 0.95
1997 Vol.
The top compression ring
Nominal value 0.22 ÷ 0.32
The limit value 0.55
The second compression ring
Nominal value 0.32 ÷ 0.47
The limit value 0.85
Scraper ring (operating section)
Nominal value 0.20 ÷ 0.60
The limit value 0.95
Crankshaft
Diameter of radical necks, mm
Engines SOHC 62.951 ÷ 62.975
Engines DOHC 59.951 ÷ 59.975
Diameter crankpins, mm
Engines SOHC 49.955 ÷ 49.974
Engines DOHC 44.956 ÷ 44.974
Limit permissible roundness and taper necks, mm
Engines SOHC 0.005
Engines DOHC 0.002
The amount of axial clearance, mm
Engines SOHC
Nominal value 0.05 ÷ 0.17
The limit value 0.30
Engines DOHC
Nominal value 0.10 ÷ 0.25
The limit value 0.30
Main bearing clearance, mm
Engines SOHC
Nominal value 0.028 ÷ 0.055
The limit value 0.09
Engines DOHC
In 1995 and 1996 Vol.
Nominal value 0.035 ÷ 0.053
The limit value 0.065
1997 Vol.
Nominal value 0.012 ÷ 0.030
The limit value 0.065
The gaps in the connecting rod bearing, mm
Engines SOHC
Nominal value 0.014 ÷ 0.054
The limit value 0.09
Engines DOHC
In 1995 and 1996 Vol.
Nominal value 0.034 ÷ 0.059
The limit value 0.07
1997 Vol.
Nominal value 0.020 ÷ 0.045
The limit value 0.07
The amount of axial clearance fit connecting rods to the crankshaft (all engines), mm
Nominal value 0.20 ÷ 0.35
The limit value 0.40
Efforts of a tightening of carving connections Nm
Bolts of the crankshaft rear oil seal
Engines SOHC 6.3 ÷ 8.3
Engines DOHC 8.4 ÷ 10.8
Nuts rods
Engines SOHC
Step 1 14 ÷ 16
Step 2 59 ÷ 65
Engines DOHC
Step 1 19 ÷ 21
Step 2 To hold another 90 ?� ÷ 95 ?�
Bolts main bearing caps
Engines SOHC 90 ÷ 100
Engines DOHC
Step 1 32 ÷ 38
Step 2 To hold another 90 ?� ÷ 95 ?�




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