Leyland Middleweight Tractor - Main Torque Settings
Engine kgf m lbf ft
Perkins D3.152
Cylinder Head 10.35 75
Big end nuts - Plain 9.66 70
Big end nuts - Cadmium plated 6.2 45
Main Bearings 15.9 115
Crankshaft balance weights 7.6 55 Flywheel set screws 11 80 Leyland 34TD, 38TD & 4/98
Cylinder head nuts (34TD & 38TD) 13.8 100 Cylinder head nuts (4/98) 15.2 110
Cylinder head bolts (4/98) 17.25 125
Big end bolts (34TD & 38TD) 8.3 60
Big end bolts (4/98) 9.66 to 10.35 70 to 75
Main bearing nuts (34TD & 38TD) 13.8 100
Main bearing nuts (4/98) 16.5 120
Main bearing bolts (4/98) 26.22 190
Rocker bracket bolts - 3/8 inch 4 30
Rocker bracket bolts - 5/16 inch 2 15
Flywheel bolts 13.8 100
Crankshaft pulley nut 34.56 250
Engine to main frame 13.25 96
Gearbox
Main shaft lock nut 25 180
Main shaft bearing rings 16.5 120
Selector cover 3.73 27
Transfer housing 3.73 27
Transfer housing cover 2.1 15
Drop box output cover - 4WD 4.55 33
Drop box securing bolts - 4WD 5.66 41
PTO - Single speed
Bearing housing to case 13.25 96
Output shaft nut 21 150
PTO - Two speed kgf m lbf ft
Front cover 8.3 to 11.8 60 to 85
Front cover end plate 2.3 20
Back plate upper 4 9.66 70
Back plate lower 3 3.73 27
Output shaft nut 21 150
Rear axle
Half axle to gearbox 5.85.8 42
Wheel nuts - 6” PCD flange 17.25170 125
- All others 34.5 250
Wheel disc to rim 23.5 170
P.A.V.T. Rim clamp 34.5 250
Sliding hub clamp bolt 34.5 250
Sliding hub to wheel 17.25 125
Hydraulics
Lift unit to gearbox 7/16” UNF bolts 5.8 42
1/2” UNC bolts 16.5 120
Cross shaft to lift unit 16.5 120
Lift arm clamp bolts 16.5 120
Lift cylinder to lift case 19.3 140
Valve chest to lift cylinder 3.73 27
Relieve valve housing 2.07 15
Front axle - 2 WD
Pivot pin nut 34.5 250
Steering arm clamp bolt 16.5 120
Extending beam bolts 34.5 250
Wheel nuts 11 80
Radius arm bolts 13.25 96
Trunnion bolts 34.5 250
Tie rod nuts 11 80
Front axle bolster to engine - D3.152 23.5 170
Front axle - 4WD kgf m lbf ft
Hub end cover 4.55 33
Hub lock nut 118 855
Swivel stub axle cover 13.25 96
Hub support shaft locknuts 13.25 96
Differential support cap bolts 13.25 96
Differential carrier to axle case 8.7 63
Bearing locknuts 18.35 133
Pinion ring locknut 45.82 332
Crown wheel bolts 8.7 63
Differential end cover 4.55 33
Pinion cover 2.48 18
Track rod nuts 15 108
Wheel nuts 13.25 96
QM Cab
Front mounting bolts
Upper 8.3 to 11.8 60 to 85
Lower 1.38 to 2.3 10 to 20
Rear cab mounts 27 to 29.7 195 to 215
Explorer Cab
Cab mounting bolts 18 130
Drawbar and Pick-up hitch
Securing bolts 34.5 250
Engine kgf m lbf ft
Cylinder head nuts - Diesel 9.8 71
Cylinder head nuts - Petrol 5.52 40
Big ends 3.45 25
Main bearings - Diesel 10.35 75
Main bearings - Petrol 9.66 70
Flywheel bolts 5.52 40
Rocker bracket 3.45 25
Clutch to flywheel 2.48 to 2.3 18 to 20
Injector nuts 1.66 12
Front axle and Steering
Radius arm bolts 13.8 to 16.5 100 to 120
Front axle beam bolts 13.8 to 16.5 100 to 120
Front axle pivot pin 16.5 120
Drop arm clamp bolt nuts 7.04 51
Transmission and Rear axle
Final drive shaft nuts 41.4 to 44.16 300 to 320
Crown wheel nuts 4.7 to 5.24 34 to 38
Rear axle casing stud bolts 10.35 to 11 75 to 80
Pinion assembly bolts 4.28 to 4.7 31 to 34
Rear axle stud nuts 4.7 to 5.24 34 to 38
Wheels
Front 8.3 to 9.66 60 to 70
Rear 21 to 22 150 to 160
Leyland 154 Lightweight Tractor - Main Torque Settings
