Leyland Middleweight Tractor - Main Torque Settings

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