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The sensor is what ties the mechanics of the throttle cable to the electronics of the Motronic. Publicized idle values as set by the BMW analyzer are the source of the above.
These values appear valid, though changes to individual machines may be advantageous. The Problems. Surging -- A condition of increasing and decreasing power, cycling back and forth, when the throttle is held absolutely steady at a fixed rpm such as 3, rpm while using a throttle lock, tape or rock-solid hand. Page 63 TPS without resetting the throttle stop screws. These do not violate the BMW warning and these may be used before resorting to this procedure.
The author of this article assumes no liability for any damage or injury to you or your bike caused by any errors or omissions. Page 64 If you are not certain you have found the throttle cable, either find another BMW rider with an R bike and ask for help finding it, or go pester your local mechanic.
Page 65 with a small wrench counterclockwise. There is a metal piece that is threaded into the lock nut which can now be loosed with your fingers by turning it in a clockwise direction. Loosen the lock nut as needed so the cable is loose. Check this by twisting the throttle on the handlebar; Page 66 remove the hose if necessary.
Remove cut off the plastic cable tie that secures a wire if it obstructs the working area. Replace the cable tie, hose and clamp when finished with the throttle plate screw adjustment. The physical manipulation that is described in the next paragraph especially on RS models is a challenge to your stamina and will take time, patience and any odd-ball tool that works. Page 67 If you look on the left side, you will find a similar large brass bypass screw.
Count and record the turns you make to lightly seat both the right and left large brass bypass screws by turning them clockwise with a flat screwdriver. Page 68 Attach one of the carb stix's flexible plastic tubes to each brass nipple.
Make certain that the carb stix's plastic tubing does not touch hot exhaust parts; the tubing will melt. There is no need to plug the black vapor recovery tubes. Step 9. It should be a very similar operation on any of the oilheads except for the differences in fairings and trim parts. Page 70 Remove the two screws that connect the upper fairing to the front of the gas tank, and the two screws that connect the fairing insert pieces to the front of the gas tank.
Remove the throttle cable from the twist grip remove the small cover that the cable goes into. I take no responsibility of any kind if you do so - in other words, it is your risk, and you are on your own if something fails.
If you are not absolutely sure you can handle this, do not attempt this procedure! Page 72 To erase fault memory: pull fuse 5 for a few seconds. This booklet is about the K but seems to be valid for the R as well, at least in part. If you have an early model R, you should perhaps include a spline lube. Page 75 Since the bolt threads are covered with threadlock, it is necessary to heat the bolts with a heat gun BMW recommends to a maximum temperature of C.
I applied heat to each bolt for minutes. Remove right bolt with a 12mm hex wrench socket and a breaker bar bolt is torqued to Nm. Page 76 Remove the three screws which secure the air box assembly.
One screw is located at the rear of the air box and one screw on each side near the front of the air box. Later you will remove the air box assembly itself. Disconnect the breather hose from the air box and the wire harness that fits into a slot at the front of the air box. Page 77 There are six bolts holding the transmission to the engine.
First remove the bolts in the upper left corner and the lower right corner. Page 78 A few torque values: fixed bearing retainer bolts on right side of driveshaft housing Nm ? Precise adjustment of the Throttle Position Sensor TPS , one of the two most important input sensors of the Motronic fuel injection system, is critical in reducing or eliminating surging.
Page 80 CW until the voltage starts to rise. Continue turning until you reach. Idle will be rough due to the need to synchronize left to right throttle bodies. Use a big rear-facing fan from the front of the bike to control cooling, if required.
Never use less than the BMW-recommended Mid grade fuel if the ignition is not advanced. I took the dive, bought Autolite s, set the gap to the BMW specification of. They worked great! What a deal for better performance! While these parts are not currently available for replacement though may be shortly , here's how to tell if you have this rare wear problem: Spray carb cleaner, propane, or simply WD at the throttle shaft pivot area with Top speed advocates often perform expensive modifications to a BMW for only a modest peak horsepower increase.
Then the machine may be less rideable and reliable on the street. Not my style, thank you! I prefer strong roll-on power for normal every day commuting, sport riding and touring. Here are the plusses and minuses: First, Jon Diaz who performed the mod to back up my data … Page 89 My take, after an initial miles of testing… Plusses: Improved roll-on power.
Engine revs more quickly. Bike accelerates in the next higher gear almost like it did with the RS manifolds in the next lower gear. This manual is also suitable for: R R R Print page 1 Print document 90 pages. Rename the bookmark. Delete bookmark? Cancel Delete. Delete from my manuals? Sign In OR. Don't have an account? Ukraine's Armed Forces Fundraising account to support the Armed Forces of Ukraine.
Repair manuals. Not to be reprinted, translated or duplicated either wholly or in part without prior written permission. Errors and omissions excepted; subject to technical amendment. It should be consulted regularly by workshop personnel as an addition to the practical and theoretical knowledge obtained in Training School courses. It is a contribution towards achieving even higher Service quality.
This numbering is repeated in the work descriptions which follow, so that work can take place without interruption. If the need arises, repair instructions are also issued in the form of Service Information. This information is of course incorporated into the next issue of the repair manual. In a record short time, the legendary Boxer boxer motorcycle engine is being developed, the main ideas of which are still used today.
In , the BMW R32 motorcycle was produced. The uniqueness of the BMW R32 engine is that the cylinders in it are located not in the direction of the front and rear wheels, like the vast majority of motorcycles of that time, but across the movement. A cardan shaft connects the rear wheel and gearbox, which is controlled by friction clutch.
Since the cylinders protrude from the overall dimensions of the motorcycle, this serves as additional cooling for the engine. In addition, the motorcycle uses a fully enclosed lubrication cycle. The BMW R32 motorcycle became the basis for all subsequent models of the company. Even on modern BMW motorcycles with Boxter engines, the features of this bike are guessed. Developing the ideas of R32, BMW in sets a speed record on a cc motorcycle, reaching a speed of
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