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
<Torque Settings TOP^
Clutch cover bolts
11 - 16
Master cylinder mounting bolts
6 - 9
Operating cylinder mounting bolts
18 - 25
Bleed valve
5 - 6.5
Transmission
< Torque Settings TOP^
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
< Torque Settings TOP^
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
< Torque Settings TOP^
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
< Torque Settings TOP^
Bearing cage nuts
1968-1973
27 - 35
1973 on
39 - 46
Wheel bearing locknut
108 - 145
Differential Attaching Nuts
< Torque Settings TOP^
521
12 - 17
620
12 - 18
Rear Suspension
< Torque Settings TOP^
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
< Torque Settings TOP^
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
< Torque Settings TOP^
* 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
