Torque Requirements

GENERAL FASTENER TIGHTENING SPECIFICATIONS

Torque specifications for specific components are listed below. For all other fasteners, use the values listed in the table below. Torque figures are in ft-lbs except those marked with an asterisk {*) which are in in-lbs.

FASTENER

TYPE

MINIMUM TENSILE STRENGTH

MATERIAL

Body Size or Outside Diameter

2

3

4

5

6

8

10

>1

K

H

%

%

H

y*

V.

1

o

SAE 2 STEEL

74,000 PSI

LOW CARBON

6

12

20

32

47

69

96

155

206

310

©

SAE 5 STEEL

120,000 PSI

MEDIUM CARBON HEAT TREAT

14*

22*

10

19

33

54

78

114

154

257

382

587

SAE 7 STEEL

133,000 PSI

MEDIUM CARBON ALLOY

13

25

44

71

no

154

215

360

570

840

©

SAE 8 STEEL

150,000 PSI

MEDIUM CARBON ALLOY

14

29

47

78

119

169

230

380

600

700

§

SOCKET HEAD CAP SCREW

160,000 PSI

HIGH CARBON QUENCHED TEMPERED

16

33

54

84

125

180

250

400

640

970

SET SCREW

212,000 PSI

HIGH CARBON QUENCHED TEMPERED

9*

16*

30*

70*

140*

18

29

43

63

100

146

STUDS

Use SAE 2, 5 and 8 values when grade is known, with nut of sufficient strength.

SPECIFIC FASTENER TIGHTENING SPECIFICATIONS

The following is a list of torque specifications for specific components. The values given are in ft-lbs unless otherwise specified.

WHEELS

Axle nuts 50

Sprocket mounting bolts or nuts 34 to 42

Brake disc mounting — 16 in. wheel 21 to 27

19 in. wheel 16

BRAKES

Rear brake anchor nuts 50

Caliper mounting bolts — FL front and rear 30 to 34

FX front 115 to 120 in-lbs

FORKS

Upper bracket pinch bolt 22 to 26

Lower bracket pinch bolts 22 to 26

Slider cap nuts 11

HANDLEBAR

Throttle control clamp screws 12 to 16 in-lbs

Handlebar clamp screws — FL 30

FX 20

Riser mounting bolts — FL 40 to 45

FX 55 to 70

ENGINE

Sprocket shaft nut 400

Crank pin nuts 200

Pinion shaft nut 140 to 160

Pinion gear shaft nut 35 to 45

Oil pump cover bolt or nut with plastic gasket 45 to 50 in-lbs with paper gasket 95 to 100 in-lbs

Cylinder head bolt 55-60

Cylinder base nut 32 to 36

Rocker arm cover nut 12to15

Upper engine mounting bracket nut 35 to 40

Stator mounting screw 30 to 40 in-lbs

Crankcase stud nut 12 to 15

Crankcase bolt 22 to 26

Tappet adjusting locknut 10

TRANSMISSION

ELECTRICAL

Primary chain case bolts 18to22

Clutch hub nut 50 to 60

Starter cover nuts 13 to 16

Transmission sprocket locknut 140 to 150

Fork shaft nut 25

Shifter finger 50 to 60

Mainshaft ball bearing nut 6 to9

Countershaft nut 55 to 65

Ignition sensor mounting screws

(1979 and earlier) 5 to 7 in-lb

Timer plate screws 12 to 16 in-lb

Trigger rotor bolt 20 to 24 in-lb

1979 and earlier 20 to 24 in-lb

1980 and later 75 to 80 in-lb

Sparkplugs 18 to 22 ft-lfc

FLUID REQUIREMENTS

HARLEY-DAVIDSON OIL

Use Harley-Davldson Power Blend Super Premium Oil for normal and severe usage in air temperatures between 20 °F and 90 °F. For other conditions, or if Power Blend Super Premium is not available, use oils as shown in the chart below.

Air Temperature (Cold Engine Starting Conditions)

Harley-Davidson Oil Grade

20 °F. to 90 °F. - Normal and severe operating conditons

Power Blend Super Premium

Severe operating conditions at air temperatures above 90 °F.

75 Medium Heavy 58 Special Light 105 Regular Heavy

HAR LEV-DAVIDSON CHAIN GREASE, CHAIN SAVER AND CHAIN SPRAY.

Designed especially as a chain lubricant. Penetrates inner bearings for a long chain life.

GASOLINE

For 1980 models use a good quality leaded or unleaded premium grade gasoline (94 pump octane or higher). 1978V2-1979 models should use leaded premium grade only. "Pump Octane" is the octane number usually shown on the gas pump.

BRAKE FLUID

Use only D.O.T. 5 brake fluid.

HARLEY-DAVIDSON/LOCTITE PRODUCTS

The Harley-Davidson/Loctite products listed below are designed to increase the reliability of fasteners and to aid in minor repairs.

WARNING - Follow the directions listed on all Harley-Davidson/Loctite products. Read all labels, warnings and cautions carefully before using.

Application

Product

Part No.

Size

Lock fender braces, master cylinder bolts, brake anchors, exhaust flanges and general body hardware.

Lock N' Seal® Adhesive

99625-77

6 ml tube on card

Secure upper and lower fork assemblies, shock absorber mounts, fittings, axle nuts, shift lever screws, cylinder head and crankcase studs, and handle bar clamps.

Stud N' Bearing Mount Adhesive

99626-77

6 ml tube on card

Lock adjustment screws and assembled parts. Secure foot rests and kick starters.

Wick N' Lock™ Adhesive

99627-77

6 ml tube on card

Retain brake pedal bushings, main shaft sprockets, counter shafts, oil seals, drive train, linkage, clutch hub and sprocket assemblies.

Retaining Compound

99628-77

10 ml tube on card

Bond brake pedal and kick starter pads. Secure loose hand grips. Repair loose windshield moldings, and other rubber, vinyl and plastic parts.

SuperBonder® Adhesive

99629-77

3 ml tube on card

Seal threaded fuel line fittings, hydraulic brake line fittings and engine plugs.

Pipe Sealant with Teflon*

99630-77

6 ml tube on card

Make emergency gaskets on-the-spot. Seal crankcase covers, cylinder blocks to crankcase, fuel and oil pumps, and rocker arm covers.

Gasket

Eliminator™

Sealant

99633-77

24 ml tube on card

Prevent galling, seizing and corrosion on oil drain plugs, spark plugs, front fork and shock assemblies and chain slides.

Anti-Seize Lubricant

99632-77

12 oz. aerosol can

Dissolve grease, dirt and oil from parts quickly and safely. Prepare mating surfaces for Loctite products.

Safety Solvent

99631-77

12 oz. aerosol can

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