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Home >> Porsche >> 2015 >> Boxster GTS, Standard Trans >> Repair and Diagnosis >> Suspension >> Rear Suspension >> 4X - Chassis - General -- (981) BOXSTER/CAYMAN >> WM 4X00IN Tightening Torques For Rear Axle (All Models) >> Technical Values

Technical Values

Location Description Type Basic value Tolerance 1 Tolerance 2
Stud for securing rear-axle carrier side section to body (front) M12 x 1.5 x 100 Tightening torque 25 Nm (19 ftlb.)    
Rear-axle carrier side section to body (front) M10 hexagon nut Tightening torque 65 Nm (48 ftlb.)    
Rear-axle carrier side section to body (rear) Screw, M12 x 1.5 x 80/always replace following removal Initial tightening 30 Nm (22 ftlb.)    
Rear-axle carrier side section to body (rear) Screw, M12 x 1.5 x 80/always replace following removal Final tightening +45°    
Upper rear-axle cross member to rear-axle carrier side section Hexagon-head bolt, M10 x 1, 5 x 45/hexagon nut M10 Tightening torque 65 Nm    
Lower rear-axle cross member (with diagonal brace) to rear-axle carrier side section Hexagon nut, M10 x 1.5 Tightening torque 65 Nm    
Support plate to rear-axle cross member Screw M10 x 1.5 x 20 Tightening torque 65 Nm    
Support plate to V-strut (transverse strut rear) Hexagon nut M10 x 1.5 Tightening torque 65 Nm    
V-strut (rear transverse strut) to body Hexagon-head bolt, M10 x 1.5 x 55/always replace following removal Initial tightening 35 Nm (26 ftlb.)    
V-strut (rear transverse strut) to body Hexagon-head bolt, M10 x 1.5 x 55/always replace following removal Final tightening +60°    
Diagonal brace to rear-axle carrier side section M10 x 1.5 hexagon nut Tightening torque 65 Nm    
Diagonal brace with support plate to rear-axle carrier side section M10 x 1.5 hexagon nut Tightening torque 65 Nm    
Diagonal brace to body Combination screw, AM 10 x 35/always replace following removal Initial tightening 30 Nm (22 ftlb.)    
Diagonal brace to body Combination screw, AM 10 x 35/always replace following removal Final tightening +90°    
Toe control arm to wheel carrier (cone) Lock nut, M12 x 1.5 Tightening torque 85 Nm (63 ftlb.)    
Toe control arm to rear-axle carrier side section (toe eccentric adjuster) M12 x 1.5 Tightening torque 110 Nm (81.5 ftlb.)    
Wishbone (lower control arm) to wheel carrier (cone) Lock nut, M12 x 1.5 Tightening torque 85 Nm (63 ftlb.)    
Wishbone (lower control arm to wheel carrier) (GT4 only) Hexagon-head bolt, M12 x 1.5 x 90 Tightening torque 120 Nm (89 ftlb.)    
Wishbone (lower control arm) to rear-axle carrier side section (camber eccentric) M12 x 1.5 Tightening torque 110 Nm (81.5 ftlb.)    
Diagonal control arm to wishbone (lower control arm) Hexagon-head bolt, M14 x 1.5 x 75 and hexagon nut Tightening torque 160 Nm (118 ftlb.)    
Diagonal arm to body Hexagon-head bolt, M14 x 1.5 x 90 + hexagon nut Initial tightening 80 Nm (59 ftlb.)    
Diagonal arm to body Hexagon-head bolt, M14 x 1.5 x 90 + hexagon nut Final tightening +60°    
Brake air spoiler to wishbone (GT4 only) M6 x 10 Tightening torque 10 Nm (7.5 ftlb.)    
Level sensor to holder on wishbone Lock nut Tightening torque 10 Nm (7.5 ftlb.)    
Brake cover plate to wheel carrier Screw, M6 Tightening torque 10 Nm (7.5 ftlb.)    
Brake disc to wheel hub M6 screw Tightening torque 10 Nm (7.5 ftlb.)    
Brake calliper to wheel carrier M12 x 1.5/always use new screws following removal Tightening torque 85 Nm (63 ftlb.)    
Speed sensor to wheel carrier Cheese head bolt, M6 x 16 Tightening torque 10 Nm (7.5 ftlb.)    
Brake hose bracket to wheel carrier M6 screw Tightening torque 10 Nm (7.5 ftlb.)    
Retainer plate for wheel bearing to wheel carrier Hexagon-head bolt, M8 Tightening torque 37 Nm (27 ftlb.)    
Wheel hub to wheel carrier (drive shaft) Lock nut, M22 x 1.5/always use new lock nuts following removal Tightening torque 460 Nm (340 ftlb.)    
Wheel bearing with housing to wheel carrier (GT4 only) Cheese head bolt, M12 x 1.25 x 45/always use new bolts following removal Initial tightening 80 Nm (59 ftlb.)    
Wheel bearing with housing to wheel carrier (GT4 only) Cheese head bolt, M12 x 1.25 x 45/always use new bolts following removal Final tightening +120°    
Retainer plate for parking brake shoes to wheel carrier (GT4 only) Screw, M6 x 16 Tightening torque 10 Nm (7.5 ftlb.)    
Spring strut to body Hexagon nut, M8 Tightening torque 33 Nm    
Spring strut to wheel carrier (double clamp: suspension/stabilizer and hexagon-head bolt) M12 x 1.5 Initial tightening 50 Nm (37 ftlb.)    
Spring strut to wheel carrier (double clamp: suspension/stabilizer and hexagon-head bolt) M12 x 1.5 Final tightening +180°    
Shock absorber (piston rod) to spring-strut supporting mount (conventional and PASM) Hexagon nut M14 x 1.5 Tightening torque 70 Nm +5 Nm  
Sensor for body at front and rear Hexagon-head bolt M6/no. 3 (two front sensors, one sensor at rear) Tightening torque 10 Nm    
Anti-roll bar to rear-axle carrier side section Hexagon-head bolt M8 Tightening torque 33 Nm    
Suspension/stabilizer to stabilizer Collar nut, M10 Initial tightening 40 Nm (30 ftlb.)    
Suspension/stabilizer to stabilizer Collar nut, M10 Final tightening +30°    
Suspension/stabilizer to spring strut/wheel carrier M12 x 1.5 Initial tightening 50 Nm (37 ftlb.)    
Suspension/stabilizer to spring strut/wheel carrier M12 x 1.5 Final tightening +180°    
Drive shaft to transmission flange (PDK and manual transmission) cheese head bolt M10 x 46.5 x 12.9 Tightening torque 80 Nm    
Drive shaft to wheel hub M22 x 1.5/always use new lock nuts following removal Tightening torque 460 Nm    
Wheel to wheel hub on front and rear axle, M14 x 1.5 Do not grease thread, shank and under the head (between screw head bearing surface and spherical cap ring) of the wheel bolts. Do not grease bearing surface of the spherical cap facing the wheel. If heavily soiled, clean bolts first with a lint-free cloth. Replace damaged wheel bolts (rework not permitted). Tightening torque 160 Nm (118 ftlb.)    
Engine bracket to engine Screws M10 x 1.5/different screw lengths Tightening torque 65 Nm    
Studs for engine carrier to body Studs M10 x 84 Tightening torque 20 Nm    
Engine carrier to body (on studs) Hexagon nuts M10 x 1.5 Tightening torque 65 Nm    
Engine mount (engine carrier) to engine bracket Hexagon-head bolt M12 x 1.5 x 113 + hexagon nut Tightening torque 120 Nm    
Transmission bracket to manual transmission Hexagon-head bolts, M10 x 1.5 x 55 with 20-mm spacer sleeves/always use new bolts following removal Initial tightening 30 Nm (22 ftlb.)    
Transmission bracket to manual transmission Hexagon-head bolts, M10 x 1.5 x 55 with 20-mm spacer sleeves/always use new bolts following removal Final tightening +60°    
Transmission bracket to PDK transmission Hexagon-head bolts, M10 x 1.5 x 30/always use new bolts following removal Initial tightening 30 Nm (22 ftlb.)    
Transmission bracket to PDK transmission Hexagon-head bolts, M10 x 1.5 x 30/always use new bolts following removal Final tightening +40°    
Transmission mount (hydraulic mount) to transmission bracket (all versions) Torx nut M12 x 1.5/the tightening torque must be supported using a open-ended wrench on the face of the transmission bracket (outside on the welded-on bush) Tightening torque 85 Nm    
Transmission mount (hydraulic mount) to rear-axle carrier side section (all versions) M8/differing screw lengths depending on variant Tightening torque 33 Nm    
Clutch slave cylinder to transmission screw M8 Tightening torque 23 Nm    
Ventilation valve to clutch slave cylinder   Tightening torque 5 Nm +1 Nm