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Tension the Belt

Linx with Atra Flex Installation for Model 424 Automotive Dynamometers

42

     

TENSION THE BELT

The Linx belt drive system is designed for all-wheel drive vehicles. The Linx belt drive 
system keeps the driving wheels of an all-wheel drive vehicle spinning at the same 
speed to avoid driveline damage. When the Linx is used with two-wheel drive vehicles 
to spin the non-driving wheels for the purpose of not throwing codes, extra attention 
will be needed for the proper adjustment of the Linx belt.

Always monitor the front and rear drum speed with every vehicle tested. 
When the drum speed starts to vary more than a couple of miles per hour, 
belt adjustment is needed.

You will need the following part:

• 62100003

Tension Arm Assembly

Use the following instructions along with Figure 34 on page 43.

1

Verify the drum brakes are released.

The dyno wheel base should only be adjusted with the brakes released or 
the Linx belt drive system disengaged.

2

Set the dyno to a wheelbase adjustment of 101-inches.

3

Measure 50.5-inches from the center of one of the drums. Mark this point on the 
bridge tube closest to the belt.

4

Loosen the ACME lock nuts on the tensioner.

Note: 

Before tensioning the belt, the brakes must be released and the drums free 

to turn.

Note: 

Verify the belt is aligned and seated in the grooves on each pulley.

5

Turn the ACME screws on the tensioner to tension the belt. Alternate sides to keep 
the pulley aligned with the belt.

6

Once the belt has some tension, place the tension arm centered on the mark. 
Verify the angle is completely seated on the underside of the tube.

7

Place two weights on the tension arm with the outer weight flush with the end of 
the arm. If the weights want to slip off of the bar, tension the belt more before 
putting the weights on.

Note: 

Use the weights included in the Eddy Current Brake calibration set.

8

With the weights placed on the bar, tension the belt until the tension bar is 
horizontal. 

9

Place a straight edge on the side of the tensioner pulley so it runs parallel to the 
belt. Verify the distance between the straight edge and the edge of the belt is even. 
Adjust this distance by turning one of the ACME screws if necessary.

10 Tighten the lock nuts.
11 Remove the weights and the tension arm.
12 Recheck the belt tension after the first several dyno runs and occasionally after 

that.

Summary of Contents for 24xLC2 Linx

Page 1: ...INSTALLATION GUIDE PLEASE READ ALL DIRECTIONS BEFORE STARTING INSTALLATION 98200073 03 Linx System with Atra Flex for Model 424 Automotive Dynamometers ...

Page 2: ...ent by Dynojet Dynojet assumes no responsibility or liability for any error or inaccuracies that may appear in this manual Except as permitted by such license no part of this manual may be reproduced stored in a retrieval system or transmitted in any form or by any means electronic mechanical recording or otherwise without the prior written permission of Dynojet The Dynojet logo is a trademark of ...

Page 3: ...ing Stationary Dyno 18 Drive Pulley Installation 19 Idler Pulley Installation 23 Belt and Tensioner Pulley Assembly Installation 24 Pulley Mounting Plates and Outer Bearings Installation 26 Installing the Idler Pulley Outer Bearing Bearing Mounting Plate Linx Detect Sensor and Lower Pulley Mount 27 Installing the Movable Dyno Lower Pulley Mount 29 Installing the Lower Pulley Mount Stationary Dyno ...

Page 4: ...vers Above Ground 44 Installing the Right Cover Assembly 44 Installing the Left Cover Assembly 47 Installing the Lid and Door Assemblies 49 Linx Belt Covers In Ground 52 Disconnect the Belt Drive from Both Dyno Drums 56 Reconnecting the Belt Drive 57 Appendix A Red Head Anchor Installation Installation A 2 Appendix B D Lok Bearing Installation Installation B 2 Bearing Lubrication B 2 ...

Page 5: ...hour belt adjustment is needed This document is designed to help you install the Linx with Atra Flex system on your model 424 automotive dyno To ensure safety and accuracy in the procedures perform the procedures as they are described Document Part Number 98200073 Version 3 Last Updated 01 14 2020 This chapter is divided into the following categories Introduction page 2 Linx Belt Drive Specificati...

Page 6: ...nger TECHNICAL SUPPORT For assistance please contact Dynojet Technical Support at 1 800 992 3525 or write to Dynojet at 2191 Mendenhall Drive North Las Vegas NV 89081 Visit us on the World Wide Web at www dynojet com where Dynojet provides state of the art technical support on line shopping and press releases about our latest product lines Try our remote support assistance or watch one of our info...

Page 7: ...n about your dyno specifications refer to the installation guide included with your dyno For more information about pit dimensions refer to P N 98219114 for standard wheel base and P N 98219113 for extended wheel base Figure 1 Above Ground Model 424xLC2 Dyno with Linx Belt Drive Dimensions description specifications Length of Linx option 470 00 cm 185 00 in Width of Linx option 63 50 cm 25 00 in o...

Page 8: ...nd set aside part description part description stationary pulley mounting plate P N 21200083 tensioner assembly P N 61100008 movable pulley mounting plate P N 21200090 upper stationary pulley mount P N 61300022 stamped 1 idler pulley mounting plate P N 21200091 lower stationary pulley mount 3 P N 61300023 stamped 2 flange bearing with lock collar 6 P N 32300001 inner stationary dyno mounting plate...

Page 9: ... 36582471 tension arm assembly P N 62100003 nut 9 16 12 hex 24 P N 36711100 atra flex coupler 2 P N 62200009 see parts list below bolt 1 2 13 x 1 5 flange hex 4 P N 36801080 splined shaft 2 P N 62200010 bolt 9 16 12 x 2 hex 12 P N 36811640 Linx brake relay kit P N 76100009 washer 3 8 hardened flat 86 above ground P N 36923100 6 additional for in ground as P N DM150 011 002 Linx belt covers in grou...

Page 10: ...lt 3 8 16 x 1 25 hex 4 included as extras P N DM150 011 006 idler pulley assembly 61100007 bolt 3 8 16 x 1 hex 101 P N DM150 019 012 16 used for atra flex install The following parts are included in the Linx Belt Covers Above Ground P N 61300080 door magnet 2 x 1 4 P N 11700001 belt cover logo leg 2 P N 21600102 tape 1 wide clear double sided P N 15300015 brace 4 P N 21700023 end panel 2 P N 21200...

Page 11: ...ter support P N 21600078 right door assembly P N 61300082 belt cover right support P N 21600082 washer 1 4 flat 33 P N DM150 009 003 The following parts are included in the Atra Flex Coupler P N 62200009 flex hub atra flex P N 22400012 yellow insert atra flex P N 32400005 fly wheel atra flex P N 22400013 screw 1 2 20 x 2 25 socket head 6 P N 36300007 drive ring atra flex P N 32400004 part descript...

Page 12: ...21200098 washer 3 8 hardened flat 6 P N 36923100 calibration access cover 2 P N 21217513 anchor red head 3 8 6 P N 37513200 belt cover center support P N 21600026 pit cover assembly 2 P N 61329400P feet 6 P N 21919101 bolt 3 8 16 x 1 hex 6 P N DM150 019 012 screw 1 4 20 x 5 8 pan head torx black 16 P N 36561045 nut crush 1 4 20 5 P N DM150 020 005 bolt 3 8 16 x 1 2 2 button head flange allen 8 P N...

Page 13: ...031 zip tie 4 18 P N 197104130 pickup collar Linx detect sensor P N 22400015 adhesive mounting pad 15 P N 15300016 screw 8 32 x 3 8 pan head phil 5 P N 36540643 mounting bracket Linx detect sensor P N 21600065 zip tie 6 2 P N 43400003 tab Linx detect sensor P N 21600067 Linx detect sensor P N 68300002 mounting plate Linx detect sensor P N 21600080 cable Linx detect sensor P N 76950665 part descrip...

Page 14: ...must be removed When the Linx option is being installed on an existing in ground dyno the pit covers must be removed If your Dynojet logo panels or pit covers are already removed continue with Carrier Bearing and Splined Shaft Installation on page 14 REMOVING THE DYNOJET LOGO PANELS ABOVE GROUND Repeat the following steps for each logo panel 1 Remove the five 1 4 20 x 5 8 inch pan head torx screws...

Page 15: ...s and two 7 16 14 nuts securing the lower mounting bracket to the dyno Set the hardware aside 4 Remove the lower mounting bracket and set aside 5 Remove the two 3 8 16 x 3 4 inch hex bolts and two 3 8 inch flat washers securing each mounting bracket to the dyno Set the hardware aside 6 Remove each mounting bracket and set aside Figure 3 Remove the Logo Panel Mounting Brackets XD002 XD003 mounting ...

Page 16: ...olts washers and nuts securing the rear deck brace to the mounting bracket Set the hardware aside 8 Remove two 3 8 16 x 1 5 inch flange hex bolts securing the rear deck brace mounting bracket to the dyno Set the hardware aside 9 Remove the rear deck brace mounting bracket and set aside Figure 4 Remove the Rear Deck Brace Mounting Bracket XD004 XD005 rear deck brace mounting bracket rear deck brace...

Page 17: ...e the torx screws 3 Remove the two bolts flat washers and nuts securing the runner extension to the support leg and remove the runner extension 4 Replace the two torx screws removed from the runner assembly 5 Remove the bolt and washer securing the support leg to the floor 6 Remove the bolt and washer securing the support leg to the track and remove the support leg Replace the bolt and washer Note...

Page 18: ... 1 5 inch flange bolts 2 Apply a small amount of grease to the first two inches of the splined shaft 3 Push the splined shaft into the dyno until it stops bottoms Pull the shaft assembly back slightly approximately 1 8 inch Verify the sleeve on the shaft is lined up with the set screw in the bearing 4 Lift lightly on the shaft finding the mid point of the vertical travel 5 While applying just enou...

Page 19: ...te Movable Dyno DM150 011 004 Nut 3 8 16 Hex 2 DM150 019 012 Bolt 3 8 16 x 1 Hex 16 INSTALLING THE INNER MOUNTING PLATE AND FLANGE BEARING MOVABLE DYNO 1 Place the flange bearing on the threaded studs on the inner plate 2 Loosely secure the flange bearing to the inner plate using four 9 16 inch washers and four 9 16 inch nuts 3 Secure the inner mounting plate to the movable dyno using eight 3 8 x ...

Page 20: ...nstallation for Model 424 Automotive Dynamometers 16 5 Using the access holes secure the bottom of the inner mounting plate to the movable dyno using two 3 8 16 x 1 5 inch flange bolts two 3 8 inch flat washers and two 3 8 inch nuts Figure 8 Secure the Bottom of the Inner Mounting Plate to the Movable Dyno access hole ...

Page 21: ...above ground dyno only 6 Secure the rear deck brace mounting bracket to the inner mounting plate and dyno using the two 3 8 16 x 1 5 inch flange hex bolts removed earlier 7 Secure the rear deck brace to the mounting bracket using the two 3 8 16 x 1 5 inch flange hex bolts washers and nuts removed earlier Figure 9 Secure the Rear Deck Brace and Mounting Bracket rear deck brace mounting bracket rear...

Page 22: ...he inner plate 2 Loosely secure the flange bearing to the inner plate using four 9 16 inch washers and four 9 16 inch nuts 3 Secure the inner mounting plate to the stationary dyno using eight 3 8 x 1 inch bolts and eight 3 8 inch flat washers 4 Verify the bearing on the inner mounting plate is centered on the shaft Loosen the bearing nuts and center the bearing if necessary Figure 10 Secure the In...

Page 23: ...ring with Lock Collar 32300002 Bushing 2 includes three bolts and lock washers each 32300003 Grooved Pulley 2 36711100 Nut 9 16 12 Hex 8 36811640 Bolt 9 16 12 x 2 Hex 8 36943101 Washer 9 16 Flat 8 61300068 Outer Shaft 2 1 Secure the flange bearing to the pulley bearing mounting plate using four 9 16 12 x 2 inch bolts four 9 16 inch flat washers and four 9 16 inch nuts 2 Slide the pulley bearing mo...

Page 24: ...ing onto the outer shaft and into the taper of the pulley 6 Place the bushing into the grooved pulley Note Insert the bushing into the larger diameter end of the pulley tapered hole 7 Loosely secure the bushing in the pulley using the three included bolts and lock washers Figure 12 Install the Pulley and Bushing grooved pulley tapered bushing section view of bushing and grooved pulley to show corr...

Page 25: ...until none of the bolts will turn at a torque wrench setting of 70 ft lb Note It is very important all three bolts on the bushing are tightened to a torque wrench setting of 70 ft lb Work around all three bolts a second time to verify The pulley should have moved to approximately 8 38 cm 3 30 in from the end of the shaft 10 Verify the pulley is 8 38 cm 3 30 in from the end of the shaft Note The me...

Page 26: ... 22 11 Slide the pulley shaft assembly onto the splined shaft and into the inner bearing until the outer face of the pulley is approximately 17 inches from the inner mounting plate 12 Using the installation instructions in Appendix B secure the cap screw on the inner bearing Figure 14 Install the Pulley Shaft Assembly pulley shaft assembly ...

Page 27: ...hreaded studs on the inner plate 2 Secure the flange bearing to the inner plate using four 9 16 inch flat washers and four 9 16 inch nuts 3 Holding the idler assembly horizontal slide the assembly into the bearing until its outer edge is approximately 11 1 8 inches from the face of the inner plate 4 Using the installation instructions in Appendix B secure the lock collar Note Refer to Appendix B f...

Page 28: ...lbase Option place the tensioner assembly 12 7 cm 5 0 in inside of the end of the rail Note Verify the welded on nuts on the tensioner assembly are towards the back and the tensioner pulley is slid all the way to the end of the assembly towards the stationary dyno 3 Verify the belt is aligned and seated in the grooves on each pulley 4 Verify the bearings are the same distance from each mounting an...

Page 29: ... Pulley Assembly Installation Version 3 Linx with Atra Flex Installation for Model 424 Automotive Dynamometers Figure 16 Install the Belt and Tensioner Pulley Assembly tensioner pulley towards stationary dyno welded nuts towards back apply grease to ACME threads ...

Page 30: ...67 Linx Detect Sensor Tab 21600080 Linx Detect Sensor Mounting Plate 22400015 Linx Detect Sensor Pickup Collar 32300001 Flange Bearing with Lock Collar 36540643 Screw 8 32 x 3 8 Pan Head Phil 5 36711100 Nut 9 16 12 Hex 4 36811640 Bolt 9 16 12 x 2 Hex 4 36900001 Washer 1 4 Lock 4 36923100 Washer 3 8 Flat 64 36943101 Washer 9 16 Flat 4 43400003 Zip Tie 6 2 61300022 Pulley Mount Upper Stationary Dyno...

Page 31: ... screws Leave these screws loose to align the sensor with the tab 3 Attach the Linx detect sensor cable to the sensor Figure 17 Install the Linx Detect Sensor and Mounting Plate to the Mounting Bracket 4 Secure the Linx detect sensor mounting bracket and the outer idler bearing to the idler bearing mounting plate using four 9 16 12 x 2 inch bolts four 9 16 inch flat washers and four 9 16 inch nuts...

Page 32: ...023 stamped 2 under the idler pulley and loosely secure the mount to the inner plate using five 3 8 16 x 1 inch bolts and five 3 8 inch flat washers one of the holes in the pulley mount is not used 9 Loosely secure the pulley mount to the idler bearing mounting plate using five 3 8 16 x 1 inch bolts and five 3 8 inch flat washers 10 Before tightening these bolts align the idler with the movable dy...

Page 33: ...re 21 Align the Linx Detect Sensor Tab INSTALLING THE MOVABLE DYNO LOWER PULLEY MOUNT 1 Place the lower movable dyno pulley mount P N 61300026 stamped 4 under the movable dyno pulley and loosely secure the mount to the inner plate using five 3 8 16 x 1 inch bolts and five 3 8 inch flat washers 2 Loosely secure the pulley mount to the movable dyno pulley bearing plate using three 3 8 16 x 1 inch bo...

Page 34: ...0023 stamped 2 under the stationary dyno pulley and loosely secure the mount to the inner plate using five 3 8 16 x 1 inch bolts and five 3 8 inch flat washers one of the holes on the pulley mount is not used 2 Loosely secure the pulley mount to the stationary dyno pulley bearing plate using five 3 8 16 x 1 inch bolts and five 3 8 inch flat washers Figure 23 Secure the Pulley Mount Under the Stati...

Page 35: ...0009 Bearing Bore 2 32300010 Bearing Flange 4 BR102 058 Bolt 1 2 13 x 1 Hex 8 1 Assemble the bearing flanges and bearing bore as shown in Figure 24 2 Loosely secure the bearing flanges and bearing bore using four 1 2 13 x 1 inch hex bolts 3 Lock the outer carrier bearing lock collar by turning the collar with a punch and tightening the set screw Verify the bearing is lined up on the shaft sleeve D...

Page 36: ...oupler on both the movable and stationary dynos You will need the following parts 22400012 Flex Hub 2 22400013 Fly Wheel 2 32400004 Drive Ring 2 32400005 Yellow Insert 2 36300007 Screw 1 2 20 x 2 25 Socket Head 12 DM150 019 012 Bolt 3 8 16 x 1 Hex 16 INSTALLING THE FLY WHEEL 1 Secure the fly wheel to the pulley shaft flange using eight 3 8 16 x 1 inch hex bolts 2 Torque the bolts to 23 ft lbs Figu...

Page 37: ...e flex hub using two set screws 4 Set up a dial indicator on the outer diameter of the flex hub Rotate the outer pulley shaft watching for the high and low readings on the indicator 5 Adjust the position of the outer carrier bearing until there is 0 015 inches or less between the high and low readings 6 Loosen the set screws and remove the flex hub 7 Tighten the 1 2 x 1 inch bearing bolts Note The...

Page 38: ...4 INSTALLING THE YELLOW INSERT AND DRIVE RING 1 Spread the yellow insert and slide the insert over the flex hub 2 Slide the drive ring over the yellow insert and secure to the outer shaft using six 1 2 20 x 2 25 inch socket head screws 3 Torque the screws to 158 8 ft lbs Figure 27 Install the Yellow Insert and Drive Ring yellow insert drive ring ...

Page 39: ... the installation process INSTALLING THE UPPER DRIVE PULLEY AND UPPER IDLER PULLEY MOUNTS 1 Place a lower stationary dyno pulley mount P N 61300023 stamped 2 over the movable dyno pulley and loosely secure the mount to the inner plate using five 3 8 16 x 1 inch bolts and five 3 8 inch flat washers one of the holes in the pulley mount is not used 2 Loosely secure the pulley mount to the movable dyn...

Page 40: ...sely secure the pulley mount to the idler pulley bearing plate using five 3 8 16 x 1 inch bolts and five 3 8 inch flat washers 5 Loosely secure the pulley mount to the movable dyno pulley bearing plate using two 3 8 16 x 1 inch bolts and two 3 8 inch flat washers 6 While applying upward pressure to support the shaft and pulley tighten all the bolts 7 Using the installation instructions in Appendix...

Page 41: ... to the inner plate using five 3 8 16 x 1 inch bolts and five 3 8 inch flat washers one of the holes on the pulley mount is not used 2 Loosely secure the pulley mount to the stationary dyno pulley bearing plate using five 3 8 16 x 1 inch bolts and five 3 8 inch flat washers 3 While applying upward pressure to support the shaft and pulley tighten all the bolts 4 Using the installation instructions ...

Page 42: ...ie 4 18 15300016 Adhesive Mounting Pads 15 1 Route the Linx detect sensor cable up and over the movable dyno pulley along the back of the dyno and over to the cable track 2 Using the supplied adhesive mounting pads and cable ties secure the Linx detect sensor cable to the pulley mounts and dyno Note You may wish to secure any additional cables with the Linx detect sensor cable for a clean installa...

Page 43: ... power cables Keep the power cables in a separate track from the signal cables 4 Using a screwdriver open the crossbar on each link 5 Place the Linx detect sensor cable in the cable track and close the crossbar on each link Figure 32 Cable Track Link Crossbar 6 Place the cable track back under the dyno and secure the cable track to the front rail tie assembly using the screws and washers removed e...

Page 44: ...connector from the relay 86 to the white brake signal wire 7 Remove the black and white power wires from the terminal labeled GND and 12 on the 4WD board 8 Cut off the ferrules and strip the wires 9 Attach the butt connector from the white jumper wire to the white power wire 10 Insert one of the ferrules from the white jumper wire to the BRK IN terminal and secure 11 Insert the other ferrule from ...

Page 45: ... FLEX IN ST ALLA TI ON Brake Signal Relay Installation Version 3 Linx with Atra Flex Installation for Model 424 Automotive Dynamometers Figure 33 Install the Brake Signal Relay secure relay to 4WD board using existing nut ...

Page 46: ...r of one of the drums Mark this point on the bridge tube closest to the belt 4 Loosen the ACME lock nuts on the tensioner Note Before tensioning the belt the brakes must be released and the drums free to turn Note Verify the belt is aligned and seated in the grooves on each pulley 5 Turn the ACME screws on the tensioner to tension the belt Alternate sides to keep the pulley aligned with the belt 6...

Page 47: ...I ON Tension the Belt Version 3 Linx with Atra Flex Installation for Model 424 Automotive Dynamometers Figure 34 Tension the Belt mark 50 50 in from center of drum angle on underside of bridge tube lock nuts tension arm weights ACME screws ...

Page 48: ...1700023 Brace 4 36468100 Nut 1 4 20 Nylock 66 36561045 Screw 1 4 20 x 5 8 Pan Head Torx 37 61300081 Left Door Assembly 61300082 Right Door Assembly DM150 009 003 Washer 1 4 Flat 33 INSTALLING THE RIGHT COVER ASSEMBLY Use the following instructions to assemble and install the right Linx cover assembly 1 Place two braces on the floor 2 Secure the end panel to the braces using two 1 4 20 nuts 3 Secur...

Page 49: ...elt cover center support to the right cover assembly using three 1 4 20 x 5 8 inch torx screws three 1 4 inch flat washers and three 1 4 20 nuts 6 Secure the belt cover right support to the right cover assembly using one 1 4 20 x 5 8 inch torx screw one 1 4 inch flat washer and one 1 4 20 nut Figure 36 Install the Right and Center Supports center support right support ...

Page 50: ... Place the cover assembly so the center support is on the outer tube with the hole lined up as shown and the right support is on the stationary dyno with the hole lined up as shown Note For extended wheelbase options use the hole in the center support shown in Figure 37 11 Secure the right cover assembly to the outer bridge tube and the stationary dyno drum guard using the two screws removed earli...

Page 51: ...LING THE LEFT COVER ASSEMBLY Use the following instructions to assemble and install the left Linx cover assembly 1 Place two braces on the floor 2 Secure the end panel to the braces using two 1 4 20 nuts 3 Secure the center leg to the braces as shown using four 1 4 20 nuts Figure 38 Install the Legs and End Panel Left Cover Assembly brace end panel center leg ...

Page 52: ... the dyno 5 Secure the left cover assembly to the center support leg using two 1 4 20 nuts and the existing nut and washer Note The center support leg is shown in a cutaway view to better show the installation 6 Square up the end panel with the braces and tighten the bolts Figure 39 Install the Left Cover Assembly secure to inside of leg secure to leg existing nut and washer center support leg ...

Page 53: ...with Atra Flex Installation for Model 424 Automotive Dynamometers INSTALLING THE LID AND DOOR ASSEMBLIES 1 Secure each lid assembly to the cover assembly using sixteen 1 4 20 x 5 8 inch torx screws fourteen 1 4 inch flat washer and fourteen 1 4 20 nuts Figure 40 Install the Lid Assemblies ...

Page 54: ...each Note The door assemblies are not interchangeable The side of the panels where the pem studs are closer to the edge approximately 0 75 inches needs to be positioned in the center as show in Figure 41 Place the edge of the panels where the pem studs are further away from the edge approximately 1 75 inches to the outside Figure 41 Install the Left and Right Door Assemblies left door assembly rig...

Page 55: ...ve the tape backing from the door magnets Note The door magnets are fragile until installed Use care when handling the magnets 4 Evenly space the door magnets and secure to the braces as shown in Figure 42 Exact placement is not critical Be sure to press the magnet to ensure a good hold 5 Close the doors against the magnets Figure 42 Install the Door Magnets door magnet ...

Page 56: ...Head Flange Allen 8 36923100 Washer 3 8 Flat 6 37513200 Anchor Red Head 3 8 6 61329400P Pit Retarder Cover Assembly 2 DM150 019 012 Bolt 3 8 16 x 1 Hex 6 DM150 020 005 Nut Crush 1 4 20 4 1 Secure the center support to the pit cover mount using four 1 4 20 x 5 8 inch torx screws and four 1 4 20 nuts Note When the dyno is equipped with the wheelbase extension kit P N 61119183 use the center support ...

Page 57: ...nstallation for Model 424 Automotive Dynamometers 2 Remove the 1 4 20 x 5 8 inch torx screw from the outer most tube of the dyno bridge 3 Secure the center support assembly to the outer bridge tube using the screw removed earlier Figure 44 Install the Center Support to the Dyno center support assembly ...

Page 58: ... Flex Installation for Model 424 Automotive Dynamometers 54 4 Place the pit cover assemblies on the floor in the position shown 5 Secure the covers to the center support using two 3 8 16 x 1 2 inch button head flange bolts Figure 45 Secure the Pit Cover Assemblies to the Center Support ...

Page 59: ... button head flange bolt each 7 Using the feet as a template drill each hole needed to secure the feet to the floor 8 Install the six Red Head anchors Refer to Appendix A for installation instructions 9 Secure each foot to the floor using one 3 8 16 x 1 inch hex bolt and one 3 8 inch washer 10 Secure one access cover to each pit cover assembly using six 1 4 20 x 5 8 inch torx screws each Figure 46...

Page 60: ...sed and no vehicle on the dyno when removing the drive rings 1 Open the linx cover doors For in ground dynos remove the six 1 4 20 x 5 8 inch torx screws securing each access cover and set aside Remove each access cover and set aside 2 Verify the dyno brakes are released Note There should not be a vehicle on the dyno 3 Remove the six socket head screws securing the drive ring and set aside 4 Remov...

Page 61: ...connect the belt drive on both the stationary and movable dynos 1 Spread the yellow insert and slide the insert over the flex hub 2 Slide the drive ring over the yellow insert and secure to the outer shaft using six 1 2 20 x 2 25 inch socket head screws 3 Torque the screws to 158 8 ft lbs Engage the belt drive at BOTH dynos Figure 48 Connect the Belt Drive on both Dyno Drums drive ring yellow inse...

Page 62: ......

Page 63: ...rate properly only when installed with ITW Ramset Red Head brand Setting Tools The use of a 24 to 40 ounce hammer is recommended for expanding Multi Set II anchors The use of carbide drill bits manufactured with ANSI B94 12 77 drill bit diameter requirements is recommended for installation of this anchor Not recommended for use in lightweight masonry material such as block or brick Use of core dri...

Page 64: ...e following instructions to install the Red Head anchors 1 Drill the hole in the concrete the same outside diameter as the anchor being used to any depth exceeding minimum embedment Figure A 1 Red Head Anchor Drill the Hole 2 Insert the anchor Figure A 2 Red Head Anchor Insert the Anchor catalog number drill bit size minimum hole depth setting tool catalog number Carbon Steel RM 38 RL 38 9 5 mm 1 ...

Page 65: ... or below the surface if the hole depth exceeds minimum embedment Figure A 3 Red Head Anchor Drive the Anchor Flush 4 Using a hammer expand the anchor with the setting tool The anchor is properly expanded when the shoulder of the setting tool is flush with the top of the anchor Note Use only Ramset Red Head setting tools to insure proper installtion Figure A 4 Red Head Anchor Expand the Anchor set...

Page 66: ......

Page 67: ...To provide the greatest assurance of safety the AC power cord s must be disconnected from the power source before servicing the dyno Always wear protective clothing ear protection and eye protection goggles safety glasses when using and servicing the dynamometer Do not repair or replace any part of the dynamometer or attempt any servicing unless specifically recommended in published user repair in...

Page 68: ...ify the collar is square and tight against the shoulder on the inner ring 7 Torque the cap screw to 15 ft lb 20 3 Nm BEARING LUBRICATION Bearing lubrication is very important for continued operation and long life Under steady use over 25 runs per day each bearing should receive 65oz 19 ml of a recommended grease every 2 months Under occasional use less than 25 runs per day each bearing should rece...

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