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Routine maintenance
BMW K100, K75 pre 1992 |
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Maintenance
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after
1000
km
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every
7500
km
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every 15000
km
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Change of engine oil and filter
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X
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X
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X
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Check and adjust the valve clearances (16V-engines: every 30.000 km)
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X
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X
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Check cooling system for leakage, control coolant level
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X
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X
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X
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Check coolant concentration (Change coolant every two years !)
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X
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X
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Check fuel system for leakage
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X
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X
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Check and adjust choke and throttle cable
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X
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X
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Change fuel filter
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X
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Check and adjust idle speed and CO percentage
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X
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X
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X
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Renew air filter element
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X
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Adjust spark plug gap
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X
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X
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Renew spark plugs
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X
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Adjust clutch and clutch cable
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X
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X
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Lubricate clutch cable and stand pivots
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X
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X
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Change gearbox oil
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X
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X
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Change final drive case oil
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X
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X
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Clean speedometer impulse transmitter
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X
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X
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Change fork oil
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X
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X
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Check tires
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X
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X
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X
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Check and lubricate wheel bearings
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X
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Check brake system for leakage
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X
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X
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Check brake fluid level (front and rear).
Change brake fluid every two years !
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X
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X
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Check brake sytem (front and rear)
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X
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Check and adjust ABS impulse transmitter clearance (front and rear)
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X
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X
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Check and clean ABS impulse wheel
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X
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X
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Check function of electrical side stand switch (angle)
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X
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X
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Check and adjust bearings of steering head, swinging arm pivot and paralever
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X
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Check tightness of nuts and bolts
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X
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X
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X
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Check battery fill level
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X
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Renew the plastic-faced guide blades of the camshaft chain every 60,000 km
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The final inspection of every maintenance includes the check of tires and wheels, tyre pressure, signals, check lights, clutch, gear-shift, brakes, ABS, steering, dashboard and a density control of the front fork.
Periodic maintenance as published at BMW´s service guide 1.91, Item no. 01 70 9 789 890.
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Maintenance data K100 / K75 / K1100
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Idle speed
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950 +/- 50 rpm
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Valve clearance, measured with cold engine
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Intake 0,15-0,20mm, exhaust 0,25-0,30mm
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CO level, measured at 950 and 5300 rpm
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2V: 2,0 +/- 0,5%
4V: 1,5 +/- 0,5%
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Spark plugs
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Bosch X5DC, Beru 12-5 DU (2V types)
Bosch XR5DC (4V types)
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Ignition time
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6° (or 0,24 mm) prior top
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Compression pressure
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Good: more than 10 bar
normal:8,5 to 10 bar
max. difference 0,5 bar
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Engine oil
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3,75 litres incl. filter, recommended: 20W50
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Gear box oil
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0,85 litres hypoid oil SAE 80 or 90, API GL5
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Final drive oil
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0,25 litres hypoid oil SAE 80 or 90, API GL5
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Fork oil
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0,33 litres per tube (K75C/S, K100)
0,36 litres per tube (K100RT/RS/LT)
0,28 litres per tube (for sport suspension)
0,35 litres left, 0,40 litres right (K75 model ´92, K1100)
SAE 5 except sport suspension which is SAE 10
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Coolant
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2,90 litres (K75)
3,20 litres (K100)
3,40 litres (K1100)
40-50% Glycol
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Clearance of clutch lever
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2,0 +/- 0,5mm (K75)
4,0 +/- 0,5mm (K100)
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Free length of clutch cable
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75,0 +/- 1,0mm
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Tyre pressure
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Front 2,25 bar, rear 2,50 bar (Standard)
front 2,50 bar, rear 2,90 bar (K75 / two passengers)
front 2,70 bar, rear 2,90 bar (K100 / two passengers / 180 km/h and above)
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Minimum thickness of brake linings (disk brake)
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1,5 mm
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Thickness of brake disk
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4,3 - 4,4 mm, wear limit 3,5mm (2V models)
5,0 mm, wear limit 4,5 mm (4V models)
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Special tools
BMW tools are also available at the supplier
Cartool GmbH (call +49 841 96500 0, ask for Mrs. Hack)
Straussenletterstr. 15, D-85053 Ingolstadt, Germany
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Tool
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Supplier, part no.
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Oil filter wrench 74 mm 14 edge
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Hein Gericke, No.29 0000 34
call +49 180 522 9 522
Detlev Louis, No.1000 3407
call +49 40 7341 9360
Hazet, No. 2169 (for 3/8” ratchet)
(available at local tool stores)
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Valve clearance adjustment tool
(for two valve-models only !)
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BMW 11 1 720 (Lever)
BMW 4 1 722 (Spacer)
BMW 11 1 730 (Pliers)
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