The main bearings have are of the angular contact type with offset inner races so that the balls transmit loads from one groove to the other along straight lines at an angle to the axis of the bearing. The angle-contact ball bearings are designed for bearing combined loading (radial-axial loads).
Bearings of this type can bear thrust loads in one direction only. In fact, under the action of a radial load inside the bearing, an axial force is created that must be counterbalanced by an axial force acting in the opposite direction; that is Why these bearings are generally fitted back to back in pairs.
Note
The main bearings supplied can be bearings with bushing (a) or flanged bearings (b) with the bushing integrated in the external ring of the bearing.
To renew the bearings proceed as follows:
Bearings with bushing
Important
On worn engines, the bearing holder may no longer be a tight fit in the crankcase half.
After having removed the bushing, check that the interference fit between the crankcase and the bushing, with bearing fitted, is no less than 0.03 Mm, otherwise, replace the crankcase halves.
Note
Fit the bearings (1) and (18) orienting them so that the side with the "letter" (c) is facing the bushings (2) and (17).
Flanged bearings
Important
On badly worn engines, bearing outer rings may have developed clearance in the crankcase halves - normally, bearing outer rings are interference-fit in the casing.
Check that the interference fit between the crankcase and the bearings (1) and (18) installed, is not less than 0.03 Mm, otherwise, replace the crankcase halves.
Important
After installing new main bearings, shim the crankshaft as described in the paragraph "shimming the shafts" and "reassembly of the crankcase halves" of this section.
Abs disabled information not displayed
Fault codes
Dds: displays a fault code described in the description of the abs system.
Dashboard: no fault code displayed.
Wiring diagram
Checks
The abs fault indicator indicates the occurrence of one or more faults in the
antilock brake system, or if the system itself
has been disable ...
Removal of the expansion tank
Loosen the clamp (6), open the hose guide (a) and slide the hose (7) out of
the radiator.
Open clamps (14) and release the hoses that pass through them.
Loosen the screws (16).
Remove the tank (12) with its hoses (7) and (20) and the support (15).
Loosen the clamp (19) to r ...
Gearchange mechanism
Return spring
Washer
Special screw
Gear pawl assembly
Interlock plunger holder
Sealing washer
Detent ball spring
Ball
Circlip
Selector claw return spring
Shim washer
Ring
Nut
Selector drum control fork
Gearchange lever pin
Shaft with gearchange lever arm
Gearch ...