Penske Racing Shocks 7300 Series - Manual (Page 6)

Damping Adjusters
The 8100 style (sweep) adjuster is located in the eyelet at the base of the
main shaft. Inside the window is an adjustment screw, which serves as the
control point for adjustments. (Figure 1)
The 8760 adjuster (red knob) is located at the base of the eyelet (Figure 2).
During the compression or rebound stage of the shock movement, fluid is
forced through two ports in the main shaft. Inside the main shaft is a needle
and jet assembly, which adjusts the amount of fluid passing through the jet.
By turning in the adjuster (clockwise), the needle is forced up into the jet,
restricting the fluid, causing firmer damping forces. In reverse, by turning the
adjuster out (counter clock-wise), more oil is allowed to pass through the jet
causing lighter damping forces. The adjustment assembly, is a timed control
for the shims located on the main piston to work.
*NOTE: All settings are taken from Full Hard.
i.e. -10 clicks = 10 clicks or sweeps (depending on adjuster) from Full Hard
Figure 2 Figure 1
+/- 25 sweeps
+/- 30 clicks
+ = More Damping
- = Less Damping
Ж
Ж
ADJUSTER
KNOB
- +
ADJUSTMENT
SCREW
The range of adjustment is affected
by the stiffness of the valve stack.
8760 Needle and Jet
The 8760 jet and needle combination have been designed to give the user a broader and more linear range of adjust-
ment for bleed past the piston on rebound.
The 8760 jet utilizes a spring loaded poppet valve to check the flow. This gives a better seal against the flow and a
quicker response time as the shaft changes direction.
This needle has a curved parabolic tip, which gives a very fine, linear adjustment in damping across the entire range
provided by the jet. It can be thought of as a combination of the 10
o , 5 o , and 3 o needles.
The 8760 needle and jet will fit any of our
adjustable shafts, but they must be used
together and cannot be interchanged with
older style needles and jets.
Available Jets:
Rebound Jet
Compression Jet
Open Jet
Adj. .070
ALL ADJUSTMENTS
ARE TAKEN FROM
FULL HARD