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Datsun 620 Specification and Tune-Up Data (continued)
 
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Torque Settings:   <MENU^  
 
     
 
Engine (L-series) Drive Shaft
Clutch Axle Shafts
Transmission Differential Attaching Nuts
Brakes Rear Suspension
Front Suspension Wheel Bearings, and Steering
 
   
 
 
Engine (L-series) lb f ft
Camshaft locate plates bolts 4.3 - 6.5
Camshaft sprocket bolt 87 - 116
Carburator nuts 4 - 7
Connecting rod nuts
8mm 23 - 27
9mm 33 - 40
Crankchaft pulley bolts 87 - 116 (100)
Cylinder head bolts
First turn 29
Second turn 43
Third turn (early - L16 1970-73)* 43 - 51
Third turn (late - L16 1973 on, L18, L20b)* 47 - 62
1970-72 L16 40
1973 L16 43
1973-74 L18 55
1975-80 L20b 61
Flywheel bolts
Early - separate lockwasherss (1970-72 L16) 69 -76 (72)
Late - intergral washer (1973 on) 101 - 116 (109)
Front cover bolts
M6 (small) 3 - 4
M8 (large) 7 - 9
Fuel pump nuts 9 - 13
Main bearing cap bolts 33 - 40 (37)
Manifold (Intake & Exhaust) 11
Motor mounts (521)
Bracker to cylinder block 18 - 22
Bracker to rubber insulator (1972-74) 19 - 23
Insulator to frame 8 - 12
Motor mounts (620)
Bracker to engine (1972-74) 14 - 18
Bracker to engine (1975 on) 19 - 26
Bracker to rubber insulator (1972-74) 10 - 13
Bracker to rubber insulator (1975 on) 19 - 26
Insulator to frame 10 - 13
Rocker pivot locknuts 36 - 43 (40)
Spark plugs 12 - 15
Spray bar bolts 5 - 6
Oil pan bolts 4.3 - 6.5
Oil pan drain plug 14 - 20
Oil pump bolts 8 - 11
Clutch
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Clutch cover bolts 11 - 16
Master cylinder mounting bolts 6 - 9
Operating cylinder mounting bolts 18 - 25
Bleed valve 5 - 6.5
Transmission
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Engine to transmission bolts
1968-1973 17 - 20
1974-1976 30 - 36
1977-on 32 - 43
Shift lever nut (1968-1973) 14 - 16
Speedometer pinion bolt nut
1968-1973 2 - 3
1974 on 3 - 4
Inpection cover bolts (1968-1973) 6 - 7
Rear bracket-to-transmission bolts 6 - 8
Rear bracket-to-frame bolts
1968-1973 24 - 28
1974 on 23 - 31
Overhaul (F4W63)
Main shaft nut 58 - 80
Raer extension bolts 10 - 13
Front cover bolts 6 - 7
Rear flang nut 72 - 101
Electrical swithces 15 -22
Inspection cover bolts 6 - 7
Filler plug 18 -25
Drain plug 15 - 22
Overhaul (F4W71B, FS5W71B)
Bearing retainer machine screws 14 - 18
Main shaft nut 101 - 123
Check ball plugs 14 - 18
Rear extension bolts 12 - 15
Front cover bolts 12 - 15
Electrical swithces 14 - 22
Filler and drain plugs 18 - 25

Clutch withdrawal lever pivot

14 - 25
Return spring plug 6 - 7
Rear extension upper cover bolts 3 - 4
Striking lever pin and nut 6 - 9
Countershaft gear nut (FS5W71B) 72 - 94
Brakes
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Brake lines (521) 12 - 14
Brake lines (620) 11 - 13
Brake tube flare nut 11 - 13
Bleed valve 5 - 6.5
Flexable brake hoses (620) 12 - 14
Front backing plate bolts, drum brakes
521 29 - 39
620 30 - 36
Master cylinder (non-power) 15 - 18
Master cylinder (power) 6 - 8
Load sensing valve to body 6 - 8
Drive Shaft
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521
Flange bolts 18 - 22
Center bearing bracket bolts 17 - 20
620
Center flange bolts 17 - 24
Rear flange bolts 17 - 24
Bearing bracket bolts 12 - 16
Axle Shafts
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Bearing cage nuts
1968-1973 27 - 35
1973 on 39 - 46
Wheel bearing locknut 108 - 145
Differential Attaching Nuts
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521 12 - 17
620 12 - 18
Rear Suspension
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Shock aborbers
(521) Upper nut ** 26 - 31
(521) Lower nut ** 10 - 16
(620) Upper nut ** 22 - 30
(620) Lower nut ** 12 - 16
Springs
(521) Front pin and shackle ** 83 - 94
(521) U-bolts ** 62 - 72
(620) Front pin (through 1977) ** 83 - 94
(620) Front pin (1978 on) ** 37 - 50
(620) Rear shackle ** 83 - 94
(620) U-bolts ** 53 - 72
Front Suspension, Bearings, Steering
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Shock aborbers
(521) Upper end 11 - 15
(521) Lower end 26 - 31
(620) Upper end 12 - 16
(620) Lower end 22 - 30
Stabilizer brackets
521 11 - 15
620 12 - 16
Tension rod nuts and brackets bolts
521 11 - 15
620 (1972-1977) 12 - 16
Tension rod front nut ( 1978 on) 22 - 30
Tension rod bolts (1978 on) 28 - 38
Anchor bolt locknut
521 29 - 36
620 22 - 30
Rubber bumper
620 6 - 8
King pin lock bolt (1968-1977) 15 - 18
Ball-joint stud (1978 on)
Upper 58 - 72
Lower 124 - 141
Ball-joint mounting nuts (1978 on)
Upper 12 - 16
Lower 28 - 72
Knuckle arm
521 81 - 95
620 (through 1977) 74 - 88
620 (1978 on) 53 - 72
Lower link spindle nut
521 62 - 69
620 (through 1977) 54 - 58
620 (1978 on) 80 - 108
Lower link screw bushings (through 1977)
521 174 - 181
620 145- 217
Upper link spindle bolts
521 40 - 45
620 (through 1977) 51 - 65
620 (1978 on) 80 - 108
Upper link screw bushings (through 1977)
521 174 - 181
521 174 - 181
620 253 - 398
Upper link buchings nuts (1978 on) 56 - 76
Steering gear housing to body
521 23 - 27
620 33 - 38
Pitman gear arm nut
521 101
620 94 - 108
Cross rod and tie rod ball joint nuts
521 44 - 51
620 (through 1974) 40 - 55
620 (1974 on) 40 - 72
Steering wheel nut 51 - 54
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* Late type head bolts, used form engine No. L16-203416, have a circular groove stamped in the top surface of the bolt head. Early head blts do not.
** Tighen with truck's weight on wheels (on ground).
 
      
 
Standard Bolt Torque Specifications
Bolt Diameter (mm) Grade* Thread pitch (mm) Tighening Torque (ft)
6 4 1.0 2.2-2.9
8 4 1.0-1.25 5.8-8.0
10 4 1.25-1.5 12-16
12 4 1.25 22-30
12 4 1.75 20-27
14 4 1.5 34-46
6 7 1.0 4.3-5.1
8 7 1.0-1.25 10-13
10 7 1.25-1.5 19-27
12 7 1.25 37-50
12 7 1.75 33-45
14 7 1.50 56-76
6 9 1.0 5.8-8.0
8 9 1.0-1.25 14-19
10 9 1.25-1.5 27-38
12 9 1.25 53-72
12 9 1.75 48-65
14 9 1.5 80-108
*Bolt grade embossed on bolt head
 
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Page last updated on Tuesday, April 1, 2014
 
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