7 -
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Spare parts catalogue
Caution
Bold reference numbers in this section identify parts shown in this exploded view diagram. These parts do not appear in the figures near the text.
Rear suspension
The rear suspension consists in a fully adjustable hydraulic shock absorber (6) with progressive actuation. This system consists of an upper rocker arm (1) and a non adjustable linkage (15) secured to the single-sided swingarm.
The swingarm is linked to frame and engine for maximum stiffness and carries the chain tensioners for chain tension adjustment at the rear end.
For monoshock absorber adjustment please refer to Sect. D 4, Adjusting the rear shock absorber.
Removing the monoshock absorber
Remove the seat (Sect. E 3, Removing the seat).
Unscrew the upper screw (5) and the lower screw (11) and slide the rear shock absorber off the swingarm and the upper rocker arm.
When the lower screw (11) is removed, the lower ball joint (13) of the linkage (15) - and the linkage with it - are released from the swingarm. Keep the threaded bushing (12) and the bushes (4) placed at the sides of the lower linkage ball joint (13) and collect the ball joint.
 
Overhauling the rear shock absorber
Measure the length of the preloaded spring (L) before disassembling. The measured length must be restored on refitting.
Disassembling the rear shock absorber
Loosen the ring nut (A) and the adjusting ring nut (B) of the spring with a pin wrench or special tools.
Remove the retainer (C) and the spring.
Visually inspect the shock absorber and locate any oil leaks or other faults.
Replace the shock absorber if needed.
Reassembling the rear shock absorber
Insert the spring into the shock absorber casing with the taper end pointing at the bottom end connection.
Install the retainer (C).
Tighten the adjusting ring nut (B) of the spring until obtaining the length (L) measured previously.
Note
One full turn of the adjusting ring nut will increase or decrease spring length by 1.5 mm.
 
Tighten the ring nut (A) against the ring nut (B).
Removing the rear suspension rocker arm
Remove the shock absorber top from the rocker as described in "Removing the monoshock absorber" under this section.
Unscrew the screw (7) and disconnect linkage (15) from rocker arm (1). Keep the bushes (4) at the sides of the ball joint (13).
Check for play in the needle roller bearings (3) inside the rocker arm before taking rocker arm (1) off the frame.
Push and pull rocker arm rear end in all directions.
Change bearings if you determine excessive play.
Undo the nut (16) and remove washer (9) to remove the rocker arm (1) from the frame. Loosen and remove retaining screw (10). Remove the complete rocker arm (1) from the frame.
Overhauling the rear suspension rocker arm
Disassembling the rear suspension rocker arm
Rocker motion is ensured through roller bearings (3) working onto an inner spacer (8). Two seal rings (2) fitted at outer ends keep the lubrication oil into the cages.
Remove the inner spacer, the oil seals and the needle roller bearings using a suitable drift.
Caution
Do not damage the bearing seats on the rocker arm while driving out the bearings. Do not refit oil seals or needle roller bearings which have been removed.
Reassembling the rear suspension rocker arm
Fit two new roller bearings (3) onto the drift part no. 88713.1071
Support the rocker arm and drive the needle roller bearings fully home into the rocker arm.
Caution
Fit the bearings squarely in the hole: use a press in case of jams.
 
Fit a new seal (2) on the drift as shown in the cross-section view. Drive it onto the needle roller bearing previously fitted.
Repeat the above procedure for the other needle roller bearings and the other seal.
Lubricate bearings and oil seals with recommended grease and insert the inner spacer (8).
Refitting the rear suspension
Grease shank and thread of the screw (10) and the contact faces of the washer (9) with specified grease.
Grease shank and thread of pivot bolt and the underside of nut (16) with specified grease.
Insert the complete rocker arm between the frame supports, as shown in the figure.
Fit the washer (9) to the screw (10) with the concave side facing the screw. Insert the screw fully home into the frame.
Install the nut (16) with the hexagon facing outward and with the spacer (14).
Tighten the nut (16) and tighten the screw (10) to the specified torque (Sect. C 3, Frame torque settings).
Grease the thread and underhead of the upper retaining screws (7) and (5) of shock absorber and linkage and start them in the holes in the rocker arm.
Insert the upper ball joint of the shock absorber into the rear hole of the rocker arm.
Tighten the screw (7) to the specified torque (Sect. C 3, Frame torque settings).
Install the bushes (4) to both rocker arm ball joints.
Insert the upper end of the linkage into the rocker arm and tighten the screw (5) to the specified torque (Sect. C 3, Frame torque settings).
Position the bottom end of shock absorber and linkage to the swingarm.
Grease threaded bush (12) sliding surface and fit the bush onto the support from the parallel side.
Grease thread, underhead and sliding surface of the lower retaining screw (11) and fit the screw into the swingarm from the right side.
Tighten the bolt (11) to the specified torque (Sect. C 3, Frame torque settings).
Refit the seat (Sect. E 3, Refitting the seat).