Problems - Possible Causes - Solutions; General Maintenance Operations - Husqvarna TC 450 Workshop Manual

Problems - Possible causes - Solutions

This paragraph indicates some of the problems which may arise during the working life of the fork, as well as the possible causes of
these problems and any solutions to the same. Always consult this Table before working on the fork.
PROBLEM
Oil leaking from the oil seal
Oil leaking from the bottom of the
fork leg
Loss of sensitivity
Fork legs not sliding properly
The fork does not react to
adjustment variations
Fork is too smooth with any
adjustment
Fork is too stiff with any
adjustment

general maintenance operations

Check screws tightening up to required torque
Clean the dust seal
Change the oil
Replace the sealing rings
If the fork is used on mudded or sandy grounds, the maintenance operations shall be carried out more frequently 30% .
FRONT SUSPENSION
CAUSE
1. Worn oil seal
2. Scratched stanchion tube
3. Dirty oil seal
1. Damaged bottom valve O- ring
2. Bottom valve loose
1. Worn sliding bushings
2. Old oil
1. Fork legs not aligned correctly
1. The pin inside the rod is stuck
2. The adjustment screw is stuck
3. Impurities in the oil
4. Valves are blocked with impurities
1. Oil level too low
2. Too soft or damaged spring
3. Oil viscosity too low
1. Oil level too high
2. Oil viscosity too high
3. Too hard spring
Intense
Tout terrain
Before every ride Before every ride
6 hours
6 hours
I.10
1. Replace the oil seal
2.
Replace the stanchion tube and the oil
seal
3. Replace the oil seal, the dust seal
and the oil
1. Replace O- ring
2. Tighten bottom valve
1. Replace the sliding bushings
2. Change the oil
1. Loosen the wheel axle and align
the fork correctly (see Par. 4. 2)
1. Clean or replace rod
2. Take off and clean adjustment
screw
3. Change the oil making sure the
forks' inside components are
properly cleaned
4. Change the oil making sure the
forks' inside components are
properly cleaned
1. Re- establish correct oil level
2. Replace the spring
3. Re- establish correct oil level
1. Re- establish correct oil level
2. Replace the oil with a lower
viscosity one
3. Replace the spring
Use
Normal
Road Tout terrain
Check screws tightening up to
After every use After every use
20 hours 30 hours
20 hours 30 hours
Part. N. 8000 H1344 (10-2009)
SOLUTION
Road
60 hours
60 hours