Penske Racing Shocks 8900 Series - Manual

1
Table of Contents Motorcycle Shocks
Installation .................................................................................................. 2
Notes ........................................................................................................... 3
Ride Height Adjustment ............................................................................ 4
Adjustment Recommendations ................................................................ 5
8900 Series Shock
Parts List ............................................................................................... 6
Specifications ....................................................................................... 7
8981 Series Compression Adjuster
Parts List ............................................................................................... 8
Operational Guide ............................................................................... 9
8986 Series Compression Adjuster
Parts List ............................................................................................... 10
Operational Guide ............................................................................... 11
8987 Series Compression Adjuster
Parts List ............................................................................................... 12
Operational Guide ................................................................................. 13
8900 Series Rebound Adjuster ................................................................. 14
Disassembly / Assembly Instructions ..................................................... 15
Suggested Maintenance ........................................................................... 16
Trouble Shooting ....................................................................................... 16
Valving
General Valving Characteristics ............................................................. 17
A Guide To Damper Tuning ................................................................... 18
Basic Start-up Procedure ...................................................................... 19
Valve Stacks .......................................................................................... 20
VDP and Digressive Valving Information Options .................................. 21
VDP 55mm Linear Base Shim .............................................................. 21
Preload Shim Spacers ........................................................................... 21
Pistons
Flow Rate Through Multiple Bleed Holes .............................................. 22
Piston Selection .................................................................................... 23
Linear Piston ......................................................................................... 24
Digressive Piston ................................................................................... 25
Velocity Dependent Piston (VDP) ......................................................... 26
Damping Adjustments ........................................................................... 28
Dyno Graph Overview ............................................................................... 30
Notes ........................................................................................................... 34
Table of Contents
Page
Motorcycle Shock Technical Manual
8900 Series
REV: 11/21/01
#8
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