Removing leading link
- Disconnect ground lead from battery and insulate.
Caution: Comply with safety regulations; fuel lines are pressurised.
- Remove fairing side sections.
- Remove engine spoiler.
See Group 46.
- Remove fuel tank.
See Group 16.
- Attach hoist, BMW No. 001510, to oil sump.
- Remove the intake air pipe.
- Remove right skirt bracket.
- Detach the right radiator from its holder and press it forward.
![](https://motoinstruction.ru/img/bmw/21/127349.jpg)
- Remove screw securing holder (1) for brake lines to frame at front right.
- Remove clip (2) for brake line from fairing bracket at front.
- Remove fastener securing brake lines to slider tube fork bridge.
- Detach the steering damper from the leading link.
- Loosen the front suspension strut at the top and detach it at the bottom from the leading link.
- Detach the leading link from the slider tube bridge.
- Remove both covers of the electronic equipment box.
- Remove Motronic control unit.
See Group 13.
- Detach the electronic equipment box and wiring harness from the frame.
Caution: Always replace the ball thrust bearing and the grooved ball bearing together.
![](https://motoinstruction.ru/img/bmw/21/127350.jpg)
- Detach the leading link at the clamp sleeve (arrow).
- Undo the leading link pivot at the frame.
- Heat the frame to approx. 100°C (212°F) at the right pivot bearing seat.
![](https://motoinstruction.ru/img/bmw/21/127351.jpg)
- Remove grooved ball bearing and clamping sleeve, using puller spindle m 14, BMW No. 31 5 693, m 14 nut with mount, BMW No. 31 5 694, and support, BMW no. 31 5 696.
- Push the leading link to the left and pull forward to remove.
Note: Extend the telescopic fork and press the suspension strut forwards.
Removing left angular-contact ball bearing for leading link
![](https://motoinstruction.ru/img/bmw/21/127352.jpg)
- Remove the leading link.
- Remove air outlet duct for left radiator.
- Remove left-hand skirt bracket.
- Detach the left radiator from its holder and press it forwards.
- Remove left-hand radiator bracket.
- Remove fasteners securing the fuel injection rail and secure it to the frame with the wiring harness.
- Remove fasteners securing throttle valve rail complete with intake air silencer.
- Remove retaining ring (arrow) for angular-contact ball bearing.
![](https://motoinstruction.ru/img/bmw/21/127353.jpg)
- Heat the frame at the left pivot bearing seat to approx. 100°C (212°F).
Note: Recess in puller sleeve, BMW No. 31 5 697, must be toward the spacer sleeve.
- Remove angular-contact ball bearing and spacer sleeve, using M 12 threaded rod, BMW No. 31 5 691, M 12 nut with mount, BMW No. 31 5 692, spacer, BMW No. 31 5 695, support, BMW No. 31 5 696, puller sleeve, BMW No. 31 5 697, and M 12 nut.
- Press the spacing bushing out of the angular-contact ball bearing.
Installing left angular-contact ball bearing for leading link
- Press the spacing sleeve fully into the angular-contact ball bearing.
- Cool the spacing sleeve with angular-contact ball bearing down to at least -10°C (14°F).
- Heat the frame at the left pivot bearing seat to approx. 100°C (212°F).
- Coat outer circumference of angular-contact ball bearing with assembly grease.
![](https://motoinstruction.ru/img/bmw/21/127354.jpg)
- Install angular-contact ball bearing and spacer sleeve, using M 12 threaded rod, BMW No. 315691, M 12 nut with mount, BMW No. 315692, spacer, BMW No. 315695, support, BMW No. 31 5 696, puller sleeve, BMW No. 315697, and M 12 nut.
- Install the circlip.
- Install throttle valve rail complete with intake air silencer.
- Install fuel injection rail.
- Install left-hand radiator bracket.
- Install the left radiator.
- Install left-hand skirt bracket.
- Install the air guide for the left radiator.
- Install the leading link.
Installing leading link
![](https://motoinstruction.ru/img/bmw/21/127355.jpg)
- Press the clamping sleeve (3) into the grooved ball bearing until flush.
- Chill clamping sleeve and grooved ball bearing (4) to at least -10°C (14°F).
- Push the leading link on to the shoulder of the spacing sleeve (2).
Note: Extend the telescopic fork and press the suspension strut forwards.
- Heat the frame to approx. 100°C (212°F) at the right pivot bearing seat.
- Coat outer circumference of grooved ball bearing with assembly grease.
![](https://motoinstruction.ru/img/bmw/21/127356.jpg)
Note: Recess in puller sleeve, BMW No. 31 5 697, must face out.
- Install angular-contact ball bearing and clamping sleeve in frame, using M 12 threaded rod, BMW No. 31 5 691, M 12 nut with mount, BMW No. 31 5 692, and puller sleeve, BMW No. 31 5 697; by screwing the M 12 threaded rod into the leading link from the left.
Note: Pull clamping sleeve and spacing sleeve together until gap is closed (arrow).
- Tighten fastener (5) securing pivot of leading link to frame.
Note: Insert the bolt for the front suspension strut.
![](https://motoinstruction.ru/img/bmw/21/127357.jpg)
- Tighten leading link at clamping sleeve (arrow).
- Run the wiring harness into the electronic equipment box.
- Secure the electronic equipment box and wiring harness to the frame.
- Install the Motronic control unit.
See Group 13.
- Install both covers of the electronic equipment box.
See Group 61.
- Secure the leading link to the slider tube bridge, and tighten.
- Tighten the front suspension strut.
- Secure the steering damper to the leading link, and tighten.
- Attach the front brake pipe to the fairing holder and the slider tube bridge.
- Secure the holder for the brake lines to the frame at the front right.
- Install the right-hand radiator.
- Install the intake air pipe.
See Group 46.
- Detach the hoist, BMW No. 00 1 510, from the sump.
- Install right skirt bracket.
- Install engine spoiler.
See Group 46.
- Install the fuel tank.
See Group 16.
- Connect earth (ground) strap to battery.
- Install fairing.
Tightening torques:
- Leading link to frame (clean thread + Loctite 243) — 107 Nm
- Leading link to clamping sleeve — 21 Nm
- Leading link to slider tube fork bridge (clean thread + Loctite 2701) — 130 Nm
- Suspension strut to leading link — 43 Nm
- Suspension strut to frame — 43 Nm
- Steering damper to leading link (clean thread + Loctite 243) — 21 Nm