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13

19

Fasten the fork leg, at the fork bottom, in a vice
with soft jaws.

Install the compression valve assembly in the

fork bottom.

Tightening torque 60 Nm.
Apply some front fork oil on the outer surface of

the inner leg, and push the outer leg up and down
a few times.

First, fill up the cartridge tube,  then raise up the

outer leg about 250 mm and add the remaining
oil.

21

Install the fork top cap and the lock nut.

Tighten the top cap and the lock nut against each

other, use tool 1860-01, a 17 mm and 24 mm
wrench. Tighten to 20 Nm.

Fit the fork legs on the motorcycle. Tighten the

upper triple clamp to 20 Nm and the lower triple
clamp to 10 Nm.

Adjust the compression and the rebound valves
according to the specification card.

20

Install the damper rod assembly into the cylinder
tube.
Use Loctite 542 on the cylinder tube cap.

Tighten with tool 1797-01.
Tightening torque 60 Nm.

Pump the damper rod up and down a few times
to check that there is no air left.

Measure the correct amount of oil according to

the specification card.

Pull out the damper rod as far as possible and

close the compression and the rebound valves.

Install the spring and the spring support.

Compression
valve assy

60 Nm

Damper rod assy

Cylinder
tube

Cylinder
tube cap

Top cap

24 mm
wrench

Damper
rod assy

Damper rod
extender

17 mm
wrench

Summary of Contents for WR 450 F - 2-TRAC 2005

Page 1: ...1 Owners Manual hlins enduro front fork Yamaha WR 450 F 2 TRAC 2005 Including Setting up your bike Fine tuning Service the fork General handling set up Technical info Spare parts...

Page 2: ...ont fork or vehicle or injury to persons if the instructions for fitting and maintenance are not followed exactly Similarly the warranty will become null and void if the instructions are not adhered t...

Page 3: ...number on the inside of the fork bottom Design hlins new upside down USD front fork is designed to combine the advantages of comfort able safe conventional forks and rigid light USD forks The result i...

Page 4: ...Setting the spring pre load Measuring Pre load on the spring springs is very important because it affects the height of the motorcycle and theforkangle Consequently handlingcharacteristics canbechange...

Page 5: ...ct springs and the correct spring pre load before making any adjustments And always start with the hlins rec ommended settings Compression stroke Rebound stroke Flow in compression valve Flow in rebou...

Page 6: ...erent combinations of springs and oil levels air springs you can alter the characteristic of the fork and tailor it to suit different tracks and conditions CAUTION Theoillevelmustbethesameinbothfrontf...

Page 7: ...eel and the springs and balls of the adjuster 2 Unscrew the top cap use a 17 mm wrench and tool 1860 01 or tool 1873 01 and a 1 2 socket wrench Put a box under the front wheel so that the springs are...

Page 8: ...ue of 20 Nm CAUTION The piston shaft must bottom in the top cap before the lock nut is tightened Spring support Optional spacers Adjustment wheel Top cap Spring support Refit the adjustment wheel Tigh...

Page 9: ...ength is 467 mm If the spring length is under 460 mm the spring must be changed Follow instruction 5 on previous page Adjust the compression and the rebound valves according to specification card Fit...

Page 10: ...d of the outer leg A sleeve is fitted above the bushing to main tain the correct position 12 Use the special tool 1702 04 to remove the bushing Install the tool in the top of the inner steel leg Insta...

Page 11: ...parts from the piston holder NOTE If the correct order is lost use the specification card as a guide Put them in the correct order on the bench Clean all parts thoroughly Inspect all parts for wear a...

Page 12: ...separated by the sleeve on the inner steel leg 18 Apply some hlins red grease on the seals Again use tool 1799 04 flip it around to install the seal in the outer leg Install the circlip and the scrap...

Page 13: ...motorcycle Tighten the upper triple clamp to 20 Nm and the lower triple clamp to 10 Nm Adjust the compression and the rebound valves according to the specification card 20 Install the damper rod assem...

Page 14: ...8 41 4 1 N mm 2328 43 4 3 N mm 2328 45 4 5 N mm 2328 47 4 7 N mm Settings Compressing adj 16 clicks Rebound adj 14 clicks L 70 300 200 Oil level When delivered from factory 105 mm Adjustment range 80...

Page 15: ...7 N mm Optional 1 6 02425 03 2 Fork leg outer 1 7 02409 01 2 Guide Sleeve 1 8 02427 02 4 Bushing 1 9 02431 01 2 Sleeve 1 10 02332 05 2 Sticker 1 11 02412 01 2 Washer 1 12 02410 02 2 Seal 1 13 02015 0...

Page 16: ...6 00884 01 4 Ball 2 7 00833 01 4 Spring 2 8 01050 01 2 Screw 2 9 00338 59 2 O ring 2 10 02397 48 2 End cap bump rubber 48mm 2 11 00438 61 2 O ring 2 12 02366 13 2 Adjustment rod 2 13 02402 01 2 Nut M1...

Page 17: ...6 1 leg Shims 00184 14 1 leg Shims 3 32 00641 04 1 leg Washer 3 33 00153 01 4 Washer 3 34 00430 05 2 Nut M8 3 35 01473 02 2 Circlip 3 36 00338 53 2 O ring 3 37 01242 01 2 Adjustment needle 3 38 00884...

Page 18: ...irst in a series of bumps but feels hard after a few more bumps Frontal grip insufficient in rough and bumpy turns Too much rebound damping Decrease the rebound damping Front end rebound too fast afte...

Page 19: ...iction or leakage After every race Clean externally and spray with an all purpose oil after washing with detergent Check externally for damage Put a little hlins red grease 146 01 on the steel tubes a...

Page 20: ...20 07295 23 Issued 05 01 28 Teknisk Illustration 1500 ex hlins Racing AB Box 722 S 194 27 Upplands V sby Sweden Phone 46 8 590 025 00 Fax 46 8 590 025 80 Your hlins dealer More info www ohlins com...

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