8987 series compression adjuster – Penske Racing Shocks 8900 Series User Manual
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8987 Series Compression Adjuster
NITROGEN
OIL
LOW SPEED COMPRESSION ADJUSTER
LOW SPEED COMPRESSION ADJUSTMENT
In the state of slow shaft movement (i.e., corner
entry, exit, and power down), oil is displaced into
the reservoir in direct proportion to the area of
the shaft entering the shock body. The oil passes
through the compression adjuster where it is
metered through an adjustable needle and jet
assembly. By shutting down the flow of oil, the oil
is restricted, causing a stiffer feel in low speed
circumstances. The low speed adjuster works in
conjunction with the high speed adjuster to delay
the high speed circuit.
The low speed compression bleed bypass
adjuster has approximately 30 “clicks” of
adjustment. Turning the adjuster knob clockwise
increases the low speed damping.
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