Yamaha TDM850 User Manual page 133

6»12 Frame, suspension and final drive
7.26a Pour the oil into the top of the tube
7.27b Tie a piece of wire around the base
of the locknut to keep the damper rod
extended...
distribute it evenly (see illustration); wait ten
minutes then measure the oil level and adjust as
necessary by adding or subtracting oil. Fully
compress the fork tube and damper rod into the
slider and measure the fork oil level from the top
of the tube (see illustration). Add or subtract
fork oil until it is at the level specified at the
beginning of the Chapter. 27 Fit the damping
adjuster rod into the damper
illustration). It is advisable to tie a piece of wire
around the locknut so that it can be used to hold
the damper rod out when installing the spring -
otherwise the rod
7.28 Thread the pre-load adjuster onto the damper rod and
tighten the locknut against it
7.26b Measure the oil level with the fork
held vertical
7.27c ... and install the spring
will settle down into the fork and will be
inaccessible with the spring installed (see
illustration). Clamp the slider in a vice via the
brake caliper mounting lugs, taking care not to
overtighten and damage them. Pull the fork tube
and damper rod out of the slider as far as
possible then install the spring with its closer-
wound coils at the top (see illustration). Fit the
rod (see spring seat, with its shouldered side fitting down
into the top of the spring (see illustration 7.6).
28 Fit a new O-ring onto the fork top bolt. Thread
the pre-load adjuster (with the top bolt
7.27a Insert the damping adjuster rod
if it wasn't removed) onto the damper rod as far
as it will go, then counter-hold it and tighten the
locknut securely against it (see illustration and
7.5). If it was removed, thread the top bolt onto
the pre-load adjuster (see illustration 7.4b).
29 Withdraw the tube fully from the slider and
carefully screw the top bolt into the fork tube
making sure it is not cross-threaded (see
illustration). Note: The top bolt can be tightened
to the specified torque setting at this stage if the
tube is held between the padded jaws of a vice,
but do not risk distorting the tube by doing so. A
better method is to tighten the top bolt when the
fork leg has been installed and is securely held in
the triple clamps.
This makes it unnecessary to remove the
tool from the bolt whilst threading It in
t/«I»H Use a ratchet-type tool when "i^J
installing the fork top bolt.
TiP
making it easier to maintain a downward
pressure on the spring.
If the damper rod Allen bolt requires tightening,
clamp the fork slider between the padded jaws of
a vice and have an assistant compress the tube
into the slider so that
7.29 Thread the top bolt into the fork tube
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