FlatRacer BMW R4v Oilhead R850 / R1100 / R1150 Ignition trigger Hall sensor replacement kit - R137 (12222306137)

BMW R4v Oilhead R850 / R1100 / R1150 Ignition Hall sensor kit R137

FlatRacer BMW R4v Oilhead R850 / R1100 / R1150 Hall sensor replacement kit - R137 (12222306137)

Hall sensor kit fully designed and developed by us to fully replace the ignition trigger set up on the BMW R4v Oilhead (R850, R1100 & R1150).

The original sensors are notorious for failing after 20+ years of service, especially its wiring, due to heat and exposure to elements.

Our ignition trigger/hall sensor kit is designed as a straight forward complete replacement, plug & play, using high quality components. These include:

• High quality, EU sourced Hall sensors with uprated, heat resistant wiring 
• High temperature (300 degrees Celsius +) & EMI resistant silicone coated fibreglass outer wiring sleeve/sheath
• Wiring rubber grommet - direct replica and correct D shape for a perfect fit
• BMW OEM 6 pin electrical connector plug - direct fit
• Stainless steel A304 back plate
• Stainless steel A304 back plate wiring clamps - direct copies of the originals
• Stainless steel A304 fasteners

Our Hall sensors are bolted in place using stainless steel fasteners instead of being riveted. This allows for a fairly quick and easy replacement, if the need ever arises.

This kit features the earlier type R137 straight in line 6 pin electrical connector plug (please check photos and diagram).

Later type of connector plug (R277) with dual row oval 6 pin plug also available, please check our other listing.

A very useful and essential Hall sensor kit to replace a failing or failed original sensor or keep it as a spare on the bike if travelling on longer journey. 

A spare kit kept on the bike will help immeasurably if a sensor fails and leaves you stranded by the road side, awaiting a potentially long and expensive recovery and repair. 

Options:

• TDC pin lock tool - 11 5 640
• Hall sensor test/timing LED tool (shortly available)

Replaces original BMW reference:   12222306137 (12 11 2 306 137)

Replaces original Bosch reference: 0232101022   (0 232 101 022)

Will Fit:

• R 1100 R 94 259R (0402,0407)
• R 850 GS 95 259E (0403)
• R 1100 GS 94 259E (0404,0409)
• R 1100 RT 96 259T (0413,0418)
• R 850 R 94 259R (0401,0406)
• R 850 RT 96 259T (0412)
• R 1100 RS 93 259S (0411,0416)
• R 1150 RT 00 R22 (0419,0499) Caution, can be fitted w/ either plug. Please check before ordering!
• R 1150 R 01 R28 (0429,0439) Caution, can be fitted w/ either plug. Please check before ordering!
• R 850 R 02 R28 (0428) Caution, can be fitted w/ either plug. Please check before ordering!
• R 850 RT 02 R22 (0417) Caution, can be fitted w/ either plug. Please check before ordering!

Will NOT fit the R1100 S models nor the later R1150 (please check our other R277 listing)

Fitting is fairly straightforward, please consult the workshop manual or follow the following fitting advice:

1 - Disconnect battery so it prevents any accidental electrical shorts

2 - Remove or lift fuel tank to access and disconnect/connect 6 pin plug

3 - Remove front centre plastic cover

4 - Rotate the engine slowly until pistons are at TDC (Top Dead Centre)

5 - Insert TDC pin lock tool 11 5 640 (available as an option with this listing)

6 - Loosen alternator to make it easier to remove its belt

7 - Remove alternator belt

8 - Remove crankshaft belt pulley and its centre bolt

9 - Remove trigger wheel (coupled with the pulley above)

10 - Carefully remove the Hall sensor assembly including its wiring and connector plug - Take notes of its route

11 - Fit the new Hall sensor assembly with original 3 bolts (do not fully tighten yet as it may need timing adjustments)

12 - Refit crank pulley and trigger wheel, correctly aligned (please check its notch and prong alignment - see photo)

13 - Carefully route the Hall sensor wiring, its D rubber grommet and connector plug

14 - Connect Hall sensor 6 pin connector plug to corresponding main harness female plug

15 - Re-install alternator and belt (carefully check if the belt is worn and needs replacing)

16 - Re-fit fuel tank

17 - Reconnect battery

18 - Switch on ignition but do not start engine  

19 - To correctly time the ignition, please use either a good quality Ignition Timing Strobe light (connected to an HT lead) or a specific Hall sensor test tool with a 12v resistor LED - NEVER use a normal 12v bulb as it will damage irreversibly the Hall sensors

20 - Alternatively, you can time the ignition by listening to the fuel pump starts to prime (buzzing sound) as one of the Hall sensors is used to cycle the pump.

21 - The LED will light up if Hall sensor is at TDC. The slots on its back plate allow circa 5 degree swing on its timing, adjust as appropriate.

21- Remove TDC pin tool 

22 - Open fully and close the fuel throttle - It will synchronize the new Hall sensor with the Motronic ECU.

23 - Start and run the engine and if satisfied with its timing, stop the engine and fully tighten the Hall sensor back plate - Please do not over-tighten as it is easy to strip the threads on the soft alloy housing.

24 - Re-fit front plastic cover - Same advice as above regarding torqueing bolts.

IMPORTANT:

Please check if indeed this is the correct kit for your bike. Verify its electrical connector plug and confirm it is the earlier R137 / A Type (see diagram and photos).

Before replacing a failed Hall sensor, please check carefully the ignition coil, HT lead cables and wiring. If the coil is damaged or cracked and/or HT leads and caps are degraded or spark plugs past their best, please replace as appropriate as these can cause Hall sensor and ignition failure.

Carefully check the multi track poly belt for the alternator. These are inexpensive and now may be a good time to replace it before it fails.

Point 12 - Carefully align crank pulley notch with crank and trigger wheel prong with the pulley and re-check before tightening and torqueing the centre bolt (usually 50Nm please check manual for your model). Failure to do so will damage components including the Hall sensor kit. Please check our pulley/trigger wheel reference photo on how it should align.

Point 19 - Always use a Timing strobe light (connected to a HT lead) or a correct Ignition Test tool with LED bulbs to set the timing. Alternatively you can use 12v ready LED bulb (with an inbuilt resistor) or a 3v LED bulb with a inline wired 1k ohm resistor on the positive side (pin 4 on the 6 pin plug) and the negative wire to the Hall sensors' trigger wires (VCC - pin 2 or 5). NEVER use a normal 12v test bulb as it will damage irreversibly the Hall sensors.