
21
1.
Insert the larger #970050 (O 5x1) O-ring onto the shock body,
until it seats around the shock body extension.
2.
Lubricate the small #971031 (O 3.1x1.6) O-ring with a drop
or two of shock oil. Taking care not to rip or damage the O-ring,
slide it over the end of the shock rod.
3.
Install the end-cap onto the bottom of the shock body. Lock it in
place by pressing it on, then turning it CW about 1/8 of a turn.
For easy assembly, use a #183010 HUDY Shock Assembly Tool.
Shock bleeding:
Turn the shock upside down and pull the shock rod out to full extension. Release the shock end-cap by turning it CCW and pulling it slightly
away from the shock body. Let the shock “vent” for at least 10 minutes; excess oil should seep out the end of the shock body. If the shock
rod doesn’t retract slightly into the shock body, push it in by 1~2mm. Replace the end-cap.
Check the shock for proper operation. The shock rod must move in and out freely with only “hydraulic” dampening. The shock rod should
not extend out fully (rebound) by itself when pushed in and released, nor should it be drawn into the shock body fully when extended and
released. It is normal to have anywhere from 25% to 75% of rebound. If it extends out more than 75% repeat the bleeding procedure and
let the shock sit for a few more minutes. Make sure that all four shocks have very similar natural rebound.
Shock length adjustment:
It is VERY important that all shocks are equal length.
Fully extend the shock absorber and measure the end-to-
end length; we recommend using digital calipers to give an
accurate measurement. If a shock absorber is shorter or longer
than others, adjust the shock length by tightening or loosening
the ball joint on the shock rod.
Damping adjustment:
If you built the adjustable shocks, fully extend the
shock rod and turn it slightly to lock the piston in the
shock body.
Turning the shock rod fully CCW aligns 4 holes in
the pistons (softest damping). Turning the shock
rod fully CW aligns 1 hole in the pistons (hardest
damping). The shocks have four settings, each of which can be
felt by a slight "click".
Set all four shocks initially to position 3 (3 holes open).
1.
Fully extend the piston rod so the piston is at the bottom of the shock body.
2.
Hold the shock upright and slightly overfill the shock body with shock oil.
3.
Let the oil settle and allow air bubbles to rise to the top. Slowly move
thepiston up and down until no more air bubbles appear.
Add shock oil as necessary.
4.
Pull the piston rod most of the way out of the shock body.
5.
Place the rubber bladder on top of the shock body from a side. Some oil
should spill out.
6.
Move the piston out very slightly so the bladder seals against the top of the
shock body.
HINT: Pre-thread the ball joint using an M3 screw.
WARNING! Be careful not to pre-thread too far, since the ball joint may split or the plastic threads may strip out
1mm
Cutaway view of
assembled
shock absorber
TOOL OPTIONAL
(HUDY #183010)
970050
O 5x1
971031
O 3.1x1.6
DETAIL
HARDEST
SOFTEST
FRONT
(Silver springs - EU)
(Light-Purple springs - US)
REAR
(Gold springs - EU)
(White springs - US)
OIL
4x
Grip the shock rod. Use either a shock rod
clamping tool, or grip the top of the shock
rod’s exposed thread with side-cutting pliers.
Thread the ball joint onto the shock rod until
approximately 1mm of thread is exposed.
CORRECT
INCORRECT
4x
4x
INCORRECT
4x
CORRECT
Follow the handy tip
TIP
! IMPORTANT
USE ONLY special T2 ball-joints (part #308316).
DO NOT USE ball joints on nylon parts tree.
1.
Place foam insert into cavity in top mount.
2.
Place top mount onto top of bladder.
3.
Install and tighten alum. cap nut.
4x
1
2
3
4
6. SHOCK ABSORBERS
DETAIL
SHINY FINISH SIDE
SHINY FINISH SIDE
NOTE ORIENTATION
OF THE PIVOT BALLS
DETAIL