Marzocchi MONSTER-Serie Betriebs- Und Wartungsanleitung Seite 32

Maintenance
32
4 MAINTENANCE
4.1 Problems - Diagnosis - Solutions
This paragraph indicates some of the problems that may arise during the fork's use, as well as the
possible causes of these problems and the suggested solutions.
Always check this table before working on the fork.
Operations inside the grey box must be carried out by authorized service centers.
Problem
Fork has too much sag
Forks bottoms too easily, but it
has the recommended sag
Fork does not get full travel
Fork bottoms out easily
Fork extends too quickly; harsh
top-out after impacts
Front wheel wants to tuck under
while cornering
Fork "packs up" or stays down
in travel during multiple impacts
Loss of fork's smoothness
Knocking sound during
rebound, but no harsh top-out
Oil "ring" on stanchions
Heavy amount of oil on
stanchions; oil dripping down
legs
Fork is sticky; fork does not
perform as new
Oil leakage from the bottom of
the leg
Loss of sensitivity
*This operation cannot be carried out on the Monster T2 model.
Diagnosis
Spring rate too soft or oil too fluid
Not enough compression
damping
Spring rate too stiff or fork oil too
high
Not enough compression
damping
Not enough rebound damping
Too much rebound damping;
spring rate too soft
Too much rebound damping
Presence of air inside the legs
Too much rebound damping
Oil seals are contaminated
Seals are damaged, stanchions
could be damaged
Oil seals are contaminated; fork
needs to be serviced
Loose bottom nut
Bottom nut o-ring damaged
Worn bushings
Old oil
Solution
Add spring preload by replacing
the preload sleeve
Check oil height
Change to stiffer spring rate
Increase compression damping by
changing oil level
Increase compression damping*
Check oil height; bottom out
compression adjuster
Get softer spring
Decrease compression damping*
Increase high speed compression
damping via the proper adjuster
Increase rebound damping*
Replace oil (SAE 7,5) with a higher
viscosity
Decrease the rebound damping*
Change to stiffer spring rate
Decrease rebound damping*
Bleed the air
Decrease rebound damping*
Replace all seals (repair the fork
before using it again)
Replace all seals and have the
stanchions inspected (repair the
fork before using it again)
Replace all seals (repair the fork
before using it again)
Tighten bottom nut
Replace o-ring
Replace sliding bushings
Change oil