Mustang Strut Manual - Penske Racing Shocks
Contents
1. Adjustment Range REBOUND 40 Clicks The rebound adjustment range is extensive but within the typical tuning window for all chassis and track conditions The adjuster has most effect in the 0 5 in sec velocity range of the strut LF CD C 15 R 15 cvp LF CD C 20 R 20 cvp LF CD C1 0 R 10 cvp LF CD C 0 R 0 cvp LF CD C 5 R 5 cvp H Force 165 Mustang Strut 2011 2012 Adjustment Range COMPRESSION 20 Clicks The adjustment range of the compression adjuster works primarily in the low speed area of the velocity spectrum This is from 0 2 in sec in strut velocity Testing has shown that this is the area where transients to the chassis can be tuned depending on driver preference and down track aero performance These adjusters are very driver sensitive so 2 clicks sometimes 1 click driver will feel LF CD C 15 R 15 cvp LF CD 20 R 20 cvp LF CD C1 0 R 10 cvp LF CD C 0 R 0 cvp LF CD C 5 R 5 cvp Force Ibs Nm 02 04 06 08 10 12 14 16 18 0 00 27 1 99 Velocity in sec Remember the adjustment range is completely dependent on what forces your main piston and shim stacks are producing For instance the build above is Piston 1 2 High Flow e Compression Stack e Rebound Stack D If you valve your strut with a stiffer shim stack your will have a greater adjustment range Mustang Strut 2011 2012 Disassembly Procedure This is a brief explanation of how to disassemble y2. Shaft Piston PI A 10 Mustang Strut 2011 2012 Piston Selections Piston selection is critical to achieve your desired damping curve For recommendations please contact a Penske Racing Shocks representative Pistons Digressive Blow Off This two stage piston combines the low shaft speed characteristics of a linear piston with the blow off characteristic of Both parts of the curve are independently tunable Variable Bleed The Variable Bleed Piston offers 1 more versatility than any other our range The piston can produce like those found on linear digre VDP pistons offers very way of controlling bleed 11 Mustang Strut 2011 2012 Reassemble Once you have your desired piston and shim stack on the shaft assembly and the ring nut is torque you are now ready to reassemble the inner tube 1 Install Floating Piston tool TL FP MUSTANG j into body Do this by removing the inflation valve then thread the tool into the floating piston then into the body This will hold the floating piston in place so you can properly bleed the shaft assembly and will Remove with 7 16 socket Reinstall with Blue Loctite and torque to 120 in Ibs Thread tool into floating piston first then thread into the body you are then ready to fill the body assembly with oil Fill body with oil to the first set of threads Mustang Strut 2011 2012 n k Next
3. ET PISTON BAND CORRECT BAND DEPENDS ON PISTON wie 00000 O 34 0822198 O RING SHAFT BEARING TO BODY ES BUMP RUBBER DIFFERENT DUROMETERS AVAILABLE 36 MR DBCOD METERING ROD EXTENSION DUAL BLEED 37 Vw 26130 156 METERING ROD VALVE WASHER DUAL BLEED SE gt gt O RING DUAL BLEED KNOB ASSEMBLY 18 Mustang Strut 2011 2012 Technical Support 8 30 AM 5 00 PM EST Penske Racing Shocks Technical Center 150 Franklin Street Reading PA 19602 United States 610 375 6180 Matt Giles Race Support Technician mattgiles penskeshocks com Geoff Miller Race Support Technician geoffmiller penskeshocks com Aaron Lambert Director of Competition ajl pensskeshocks com PENSKE RACING SHOCKS WWW PENSKESHOCKS COM Rev 5 11 19
4. adjuster turns when you are making compression adjustment you may be side loading the knob or you may have locked them together Check for debris in the threads and or check the straightness of the screws The Dual Bleed adjuster mechanism provides the following ranges Compression Adjuster Black Hand Knob 40 clicks stiffer clockwise O full hard 40 full soft Rebound Adjuster Red Hand Knob 40 clicks stiffer clockwise 0 full hard 40 full soft will get more clicks than 20 depending on your valving 20 clicks is typically full soft I REBOUND KNOB More firm clockwise COMPRESSION Do not over tighten the adjusters When making adjustments they will have a positive stop In order to close off the bleed you do not need to continue to turn the knob for it to seal Mustang Strut 2011 2012 To adjust follow the procedure as follows if this procedure is not followed in the recommended sequence the intended settings may not be achieved in practice To Set Adjusters 1 Turn REBOUND full clockwise until it stops 2 Turn COMPRESSION full clockwise until it stops 3 Turn the COMPRESSION counterclockwise to desired setting 4 Turn the REBOUND counterclockwise to desired setting 5 During track tuning simply turn adjusters as needed until the adjuster stops which would signify you are at the end of the adjustment range
5. PENSME RACING SHOCKS PS Mustang Strut Strut In line or Remote Single Double or Triple Adjustable TECHNICAL MANUAL Main Office 150 Franklin St P O Box 1056 Reading 19603 610 375 6180 610 375 6190 Fax Mustang Strut 2011 2012 Table of Contents Introduction p 3 Terminology p 4 Getting Started p 5 Adjuster s p 5 Rebound Adjuster p 6 Compression Adjuster 7 Disassembly p 9 Piston Selection p 10 Reassembly p 12 Warnings 15 Parts List p 16 Technical Support p 19 Mustang Strut 2011 2012 Introduction Thank you for your purchase of your new Penske Racing Shocks Mustang package The Mustang package can be used in all forms of racing This manual will explain the details of the strut give torque specifications and give all part 5 All of the fundamental attributes found in any Penske Racing Shock have been incorporated into the Mustang Strut including e Standard Penske 45mm bore size which allows use of wide array of piston types Low friction shaft and piston seals Hard chromed 4130 main shaft for strength durability and low breakaway friction e Durable ACME thread body that allows quick adjustment of spring preload 100 per turn Simple in line design e All Penske user friendly adjusters can be utilized in the strut Single adjustable Double adjustable our industry leading Dual Bleed Adjuster Triple and even Four Way adjustable configurations can b
6. become loose and cause damage 15 Mustang Strut 2011 2012 Parts List e 6 amp 8 See next pg 11 12 amp 14 11 12 6 14 aD 4 22 Mustang Strut 2011 2012 N N F _ V H H H H 17 Mustang Strut 2011 2012 INFLATIONASSEMBY __ HIGHPSIVALVEGORE gt gd IRA O AIR VALVE PORT O RING ALUM OR 2010 8 SEALING O RING BC MUSTANG TP BODY CAP MUSTANG TOP PIN SPRING RETAINER STRUT 2 25 2 5 60MM BODY MUSTANG OUTER STRUT THRUST BEARING PLATE x 2 25 2 5 60MM RIDE HEIGHT STRUT 2 25 2 5 THRUST BEARNIG 2 25 2 5 60 SC MG LONG SCREW SWAY BAR MOUNT STRUT TM MUSTANG MUSTANG SWAY BAR MOUNT LH RH NT MG BC LOCK NUT STRUT ss UO 14 SCMGSHORT SCREW LOWER CLEVIS MOUNT 2 MOUNTING NUT UPPER PIN 14 1 5 JAM NUT UPPER PIN 14 1 5 _ gt 08420198 O O RING FLOATING PISTON 19 BU MX5 F BUSHING UPPER PIN MOUNT 20 RH IN STRUT JAM NUT STRUT BODY x3 21 BU MB4550DU BUSHING OUTER TUBE 2 TM MG BRAKE TAB MOUNT BRAKE LINE SH 175A DB SHAFT ADJ 9 375DUAL BLEED SB PO STRUT SHAFT BEARING STRUT OR 2114 V O RING SHAFT BEARING OR 2007 8 O RING DUAL BLEED NEEDLE STACK COMPRESSION AND REBOUND
7. e used e Winning heritage Penske Racing Shocks continue to help our customers win races and championships in all forms of Motorsport Made in U S A The Mustang Strut has been 100 designed machined assembled and tested for quality in the United States Mustang Strut 2011 2012 Terminology INFLATION VALVE SPING RETAINER TL COMPUNIT IS THE REQUIRED TOOL TO AVAILABLE FOR 2 25 OR 2 5 SPRINGS CHECK AND FILL PRESSURE INNER TUBE SWAY BAR MOUNT BOLT SPING PRELOAD ADJUSTER AVAILABLE FOR 2 25 OR 2 5 SPRINGS SWAY BAR MOUNT LOCK RING NOT USED ON DRAG APPLICATION QTY 1 USED TO JAM PRE LOAD ADJUSTER QTY 2 USED TO JAM SWAY BAR MOUNT OUTER BODY BRAKE LINE TAB MOUNT NOT USED IN ALL APPLICATIONS LOWER MOUNT ADJUSTABLE RIDE HEIGHT LOWER MOUNT BOLTS REBOUND ADJUSTER COMPRESSION ADJUSTER Mustang Strut 2011 2012 Getting Started The Mustang Struts are set from the factory at recommended starting settings for your application They are pressurized and ready to go The starting pressure for the Mustang Strut is will range from 75 225 psi depending on application Adjusters The most popular and common adjuster are the dual bleed adjusters these are nested within the same mechanism This means that when making compression adjustment the rebound adjuster will NOT turn When making a rebound adjustment the compression knob will rotate This is normal If the rebound
8. our strut unit so you can service and or re valve you strut 1 Remove lower mount 2 Remove Dual Bleed Adjuster Knob assembly a Do this by turning rebound knob counter clockwise unit entire assembly is unthreaded b asmall steel washer and aluminum plug b should be with adjuster assembly 3 Clamp outer tube into TL BDCL MUSTANG OUTER Then using 7 8 socket remove both jam nuts d Mustang Strut 2011 2012 4 Remove inner tube assembly from outer tube by pulling inner tube out 5 Depressurize tube assembly at this point Remove valve cap from inflation unit e and depress valve core 6 Hold inner tube assembly in vise using flats on body cap or using inner body clamp Then using the proper spanner wrench f unthread the shaft bearing g from the inner body Before removing shaft assembly from body install TL 45RNG h to capture any oil overflow Mustang Strut 2011 2012 7 Youare then ready to remove the Ring Nut from the shaft Hold the shaft in the TL SH CLAMP i and with 34 socket remove the nut You can then make changes to the shim stack and change pistons if desired See below for our piston tuning guide After desired vavling is installed tighten ring nut torque to 25 ft Ibs Ring Nut NT 02R TL SHAFT CLAMP i Jet JT 76RD Rebound Stack VS Ring Nut e NT 02R Piston Band Compression Stack Out Plate VW 100
9. take the shaft assembly and submerge it into the oil make sure the cross holes k on the shaft are submerged in the oil from this point on don t allow the cross holes to come out of the oil Manually displace the shaft up and down 1 You will get air out of it initially continue to displace the shaft up and down until you get a smooth solid feel You then want to pull the shaft assembly up so that the top out plate is in the middle of the threads you may have to add a bit of oil to ensure the cross holes stay submerged Finally slide the shaft bearing n down and start to thread into the body once it starts to get tight remove the floating piston tool and finishing tightening the bearing There is no torque spec on this make sure you get it good and tight more than snug The inner tube assembly is then ready to be reinserted into the outer tube Make sure there is 1 jam nut bottomed on the shaft prior to inserting into outer body 0 p Thread on first jam nut torque to 60 ft Ibs with Red Loctite then the second torque to 60 ft Ibs with Red Loctite q Reinstall adjuster assembly and internal metering rod and tube Make sure small extension and washer are installed as well r Mustang Strut 2011 2012 Metering rod extension and washer 14 Mustang Strut 2011 2012 Warnings Make sure the circled bolts torque to the appropriate spec before running vehicle By not having proper torque strut could
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