Clievma Posted September 27, 2015 Share Posted September 27, 2015 Hi, Can anybody confirm the torque value for the cam sprocket nut. I think it's 65nm using a 16mm claw foot. Just checking some work my dealer did on my bike and like to recheck this value. Many thanks Mike Link to comment
Aussiegazza Posted September 28, 2015 Share Posted September 28, 2015 My BMW manual for a 0A03 Engine says it is indeed 65Nm. The instructions mention using a locating device that locks both cams to set the ignition timing whilst the bolts are being tightened. I WOULD NOT try torqueing them without the locating device. See pic Tightening torques 0A03 - R 1200 RT 11 - Engine Value Valid 11 11 - Engine block Threaded plug for locking at TDC in crankcase M16 x 1.5 30 Nm Bracket, engine guard to crankcase M8 x 25 19 Nm Oil drain plug to crankcase M20 x 1.5 42 Nm Assembly of crankcase M10 x 130 Tightening torque, 25 Nm Additional angle of rotation, 90° Engine guard to bracket M6 x 20 8 Nm Anti-twist plate (friction bearing) to crankcase M6 x 25 12 Nm Assembly of crankcase M6 x 30 12 Nm Assembly of crankcase M8 x 80 19 Nm Diaphragm valve to crankcase M6 x 16 12 Nm Threaded plug (connection for oil pressure measurement) in crankcase M10 x 1 10 Nm Coolant drain plug in crankcase M10 x 1 15 Nm Coolant filler adapter in crankcase M10 x 1 10 Nm 11 12 - Cylinder head with cover Cylinder head cover to cylinder head M6 10 Nm Cylinder head to crankcase M10 x 110 tighten in diagonally opposite sequence 1st tightening torque, 5 Nm 2nd tightening torque, 20 Nm 3rd tightening torque, 40 Nm Additional angle of rotation, 120° M6 x 25 12 Nm M6 x 95 12 Nm Slip pad to cylinder-head cover M6 x 14 9 Nm Camshaft bearing cap to cylinder head M6 x 35 tighten alternately 10 Nm Oil filler screw in cylinder head cover M34 x 1.5 8 Nm 11 14 - Housing cover Crankcase cover to crankcase M6 x 20 Tightening sequence: see Repair Manual 12 Nm Oil tank to front cover M5 x 16 5 Nm 11 15 - Crankcase breather Breather cover to gearbox cover M6 x 20 12 Nm Breather wheel to crankshaft M10 x 1 x 25 40 Nm 11 24 - Conrod with bearings Conrod bolt M10 x 1 x 50 - 13.9, Replace screw Thread and seating face of the screw oiled 1st tightening torque, 5 Nm 2nd tightening torque, 20 Nm Additional angle of rotation, 150° Slacken and then retighten the bolt 1st tightening torque, 5 Nm 2nd tightening torque, 20 Nm Additional angle of rotation, 150° 11 26 - Starter freewheel, layshaft Freewheel housing to alternator M8 x 16 - 12.9 35 Nm Sleeve (axial stop, freewheel gear) to crankcase M6 x 50, for re-use Thread-locking compound (Loctite 243, Medium strength) 10 Nm Shaft for starter double gear to crankcase M6 x 80 8 Nm Shaft for starter idler gear to crankcase Left-hand thread, M20 x 1.5 18 Nm M6 x 80 8 Nm 11 31 - Camshaft Timing-chain rails to crankcase M8 19 Nm Camshaft sprocket to camshaft left exhaust camshaft, M10 x 1.25 x 35 - 10.9 65 Nm other camshafts, M10 x 1.25 x 25 - 10.9 65 Nm Trigger for camshaft sensor to camshaft M5 x 20 - 10.9 6 Nm Securing screw for intermediate shaft axle in cylinder head M6 x 14 8 Nm Sprocket to intermediate shaft M6 x 12 10 Nm Chain tensioner to cylinder M18 x 1.5 30 Nm 11 41 - Oil pump with strainer and drive Oil-pump cover to crankcase M6 x 16 12 Nm Oil intake in crankcase M6 x 20 8 Nm Threaded plug for oil pressure control valve in crankcase M24 x 1.5 42 Nm Oil-pump pinion to oil-pump shaft M6, Replace nut Thread-locking compound (mechanical) 10 Nm 11 42 - Oil filter and lines Oil filter to crankcase Lubricate sealing ring with engine oil 11 Nm Oil filter adapter to crankcase M20 x 1.5 35 Nm 11 51 - Coolant pump with drive Coolant pump to crankcase M6 x 40 12 Nm 11 53 - Thermostat and on-engine coolant lines Coolant adapter for thermostat to crankcase M6 x 16 12 Nm Coolant adapter to crankcase M6 x 16 12 Nm 11 78 - Exhaust controls Oxygen sensor to exhaust manifold M18 x 1.5 Lubricate thread, Lubricant (Optimoly TA) 45 Nm Link to comment
AndyS Posted September 28, 2015 Share Posted September 28, 2015 Clievma, How are you going to recheck that torque? Moreover, why should you doubt them. Why not check every fastener they have removed! And like aussigazza implies, you may end up being in a worse situation without the correct fixtures. Link to comment
Clievma Posted September 28, 2015 Author Share Posted September 28, 2015 Thanks guys, I have the locking device, cam chain tool and cam alignment tool and will have all in place. I want to check the cam timing first and check the torque on the cam nut. All stripped down and alignment looks ok with cam alignment tool when chain correctly tensioned. So just needed to double check the torque for the cam nut Was suffering with a fair but of 'hunting' around 3000rpm and understand cam timing can effect this a good deal. All looks ok now and hunting issue much improved. Cheers Link to comment
narcosis Posted September 28, 2015 Share Posted September 28, 2015 You mentioned claw foot. If you are attaching a crows foot or claw foot to your torque wrench you're going to have to recalculate the torque value or you're going to over torque. Here's an example calculator: Touque Calculator Ken Link to comment
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