Rear suspension of motorcycle Aprilia RS125/3 (1998-2005)

Removing the rear swinging arm
Read 1.2.1 carefully. Torque wrench settings: Linkages to swinging arm (1): 80 Nm (8.0 kg·m) Brake hose clips (2-3): 3 Nm (0.3 kg·m) Rear screw (4): 22 Nm (2.2 kg·m) Lockring (5): 35 Nm (3.5 kg·m) Adjusting bush (6): 12 Nm (1.2 kg·m) Swinging arm...

Dismantling the swinging arm
Read 1.2.1 carefully. Remove the swinging arm; see 7.11.2. Place the swinging arm on a work bench. Clean both sides of the bearing housings with a cloth. Remove the outer plastic washers (1). Slide both bushes of the needle roller bearings (2) off...

Rear swinging arm component inspection
Note. Check all components for distortion, damage, cracking and denting. Replace any damaged components. Needle roller bearings Rotate the roller cages manually. They must rotate smoothly, with no hardness or noise. There should be no end float....

Reassembling the swinging arm
Read 1.2.1 carefully. Note. Change both needle roller bearings. Clean all components of the swinging arm articulated connection and apply lithium grease. Install two new needle roller bearings (1) using a drift with adequate diameter. The bearings...

Installing the swinging arm
Read 1.2.1 carefully. Torque wrench settings: Swinging arm spindle (1): 100 Nm (10.0 kg·m). Adjusting bush (2): 12 Nm (1.2 kg·m) Lockring (3): 35 Nm (3.5 kg·m) Rear screw (4): 22 Nm (2.2 kg·m) Linkages to swinging arm (5): 80 Nm (8.0 kg·m) Brake...

Rear shock absorber removal
Read 1.2.1 carefully. Torque wrench settings: Shock absorber to frame (1): 50 Nm (5.0 kg·m) Linkages to frame (2): 50 Nm (5.0 kg·m) Shock absorber to linkages (3): 25 Nm (2.5 kg·m) Place the motorcycle on the front wheel stand (OPT); see 1.7.1....

Rear shock absorber installation
Read 1.2.1 carefully. Torque wrench settings: Shock absorber to frame (1): 50 Nm (5.0 kg·m) Shock absorber to linkages (2): 25 Nm (2.5 kg·m) Linkages to frame (3): 50 Nm (5.0 kg·m) Position the shock absorber inserting it from the bottom. Insert the...

Removing the rear suspension linkages
Read 1.2.1 carefully. Torque wrench settings: Linkages to frame (1): 50 Nm (5.0 kg·m) Shock absorber to linkages (2): 25 Nm (2.5 kg·m) Linkages to swinging arm (3): 80 Nm (8.0 kg·m) Working from the right-hand side, undo and remove the nut (1)....

Dismantling the rear suspension linkage system
Read 1.2.1 carefully. Torque wrench settings: Single to double connecting link (1): 50 Nm (5.0 kg·m) Remove the complete linkage assembly; see 7.12.3. Undo and remove the nut (1). Withdraw the bolt on the opposite side and collect the washer. Remove...

Rear suspension component inspection
Note. Visually inspect all components for distortion, damage, cracking and denting. Replace any damaged components. Roller bearings Rotate the roller cages manually. They must rotate smoothly, with no hardness or noise. There should be no end float....

Removing the drive chain
Read 1.2.1 carefully. Slacken the chain; see 2.21.3. Rotate the rear wheel until locating the master link. Slip off the clip (1). Remove the link plate underneath. Remove the master link from the opposite end. Remove the chain. Warning! When the...

Refitting the drive chain
Read 1.2.1 carefully. Check that the chain is correctly positioned on the front and rear sprockets. The chain open ends should be in the lowermost portion of the chain midway between the sprockets. Overlap the two ends and slide the master link pins...