TM RACING 2012 TM 100 MX, User And Maintenance Manual

Page: 43 / 84

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ENGLISH
43
REAR SUSPENSION MECHANICAL LINKAGE
The rear suspension of all TM motorcycles has a link-rod and rocker
mechanism that progressively changes the lever ratio between the
wheel and the rear shock.
This mechanism works on bearings, which must be cleaned and greased
at the envisioned intervals to maintain the working of the suspension
efficient.
When cleaning the motorcycle with high pressure cleaning devices, do
not aim the jet directly onto the suspension mechanical linkage.
CHECK CHAIN TENSION
Put the motorcycle onto the central stand to check chain tension.
Push the lower part of the chain upwards to the end of the drive chain
slider.
The upper part of the chain (A) must be taught. The distance between
the chain and rear fork must be about. 10-15 mm. Adjust the tension,
if necessary.
- IF THE CHAIN IS TOO TIGHT , THE FINAL TANSMISSION COMPONENTS
(CHAIN, GEARBOX AND REAR WHEEL BEARINGS) ARE GREATLY
STRESSED. AS WELL AS A PREMATURE WEAR, IN EXTREME SITUA-
TIONS THE CHAIN OR GEARBOX DRIVEN SHAFT MAY BREAK.
- IF, HOWEVER, CHAIN TENSION IS INSUFFICIENT, IT CAN EXIT FROM THE
SPROCKET AND LOCK THE REAR WHEEL OR DAMAGE THE ENGINE.
- IN BOTH CASES IT IS EASY TO LOOSE CONTROL OF THE MOTORCY-
CLE.
ADJUSTMENT OF CHAIN TENSION
(ALL MODELS EXCEPT SMM)
Loosen the wheel axle nut (1), loosen the counter-nuts (2) and turn the
adjustment bolts (3) to the left and to the right by the same amount. To
increase chain tension, unscrew the adjustment bolts. To decrease chain
tension, screw the adjustment bolts. Reach correct chain tension.
For correct alignment of the rear wheel, the marks (4) on the right and
left chain-tensioner must aligned with respect to the reference markings
(5). Tighten the adjustment screw counter-nuts. Before locking the wheel
axle nut, check that the chain-tensioners (6) are laying on the heads of the
adjustment bolts and that the rear wheel is aligned with the front wheel.
Tighten the wheel axle nut to 80 Nm.
ATTENTION
- IF YOU DO NOT HAVE A DYNAMOMETRIC WRENCH FOR ASSEMBLING,
HAVE THE TIGHTENING TORQUE CHECKED BY A SPECIALISED TM
WORKSHOP AS SOON AS POSSIBLE.
A LOOSE WHEEL AXLE MAY CAUSE UNSTABLE DRIVING OF THE MO-
TORCYCLE.
DANGER
FRAME AND ENGINE MAINTENANCE FRAME AND ENGINE MAINTENANCE