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MXC

Coil

FAILURES, CAUSES AND REMEDIES

This paragraph reports some failures that may occur when using the fork. It also indicates possible causes and suggests a remedy. Always
refer to this table before doing any repair work.

Oil leaking through the bottom of slider

O-rings at pumping rod bottom damaged

Replace the O-ring

Oil leaking though the top of slider

1. Oil seal is worn out
2. Stanchion tube is scored
3. Excessive dirt on oil seal
1. Replace oil seal

2. Replace crown/stanchions assembly, oil

seals and dust seals

3. Clean the oil seal seat and replace oil

seal

Fork has not been used for some time and
is locked out

Oil seals and dust seals tend to stick to
stanchions

Raise dust seal and lubricate stanchion
tube, dust seal and oil seal

Excessive play of stanchions in the sliders

Pilot bushings are worn

Replace pilot bushings

FAILURES

CAUSES

REMEDIES

The fork reaches its end of stroke easily

Valve at the bottom of the stanchion
damaged

Change

Adjuster position does not affect fork opera-
tion

Dirt inside legs

Clean carefully and change oil

Fork rebounds too fast in any adjuster
position

Dirt inside fork legs

Clean carefully and change oil

Summary of Contents for MXC Coil

Page 1: ...ith a special preferably biodegradable solvent such as trichloroethane or trichloroethylene 4 Before reassembling lubricate all parts in contact with each other using silicone fat spray or a specific oil for seals 5 Always grease the lip seal rings before reassembling 6 Use wrenches with metric size only Wrenches with inch size might damage the fastening devices even when their size is similar to ...

Page 2: ...anchionsassembly oil seals and dust seals 3 Clean the oil seal seat and replace oil seal Fork has not been used for some time and is locked out Oil seals and dust seals tend to stick to stanchions Raise dust seal and lubricate stanchion tube dust seal and oil seal Excessive play of stanchions in the sliders Pilot bushings are worn Replace pilot bushings FAILURES CAUSES REMEDIES The fork reaches it...

Page 3: ...e carried outwithextremecare Theinstallationshould always be checked by one of our Technical Service Centers WARNING Steer tube headset mounting and adjustment must be carried out in compliance with the headset manufacturer s instructions Improper in stallation may jeopardize the safety of the rider To replace it contact one of our Technical Service Centers with the required tools WARNING In case ...

Page 4: ...r this will alter the amount of oil inside the fork legs ADJUSTMENT SPRING PRELOAD Take off the rubber protection 2 To change preload turn the screw 4 inside cap 5 using a 4 mm Allen wrench Turn out the screw 4 completely then tighten it until it touches the upper washer 7 From this starting position which cor responds to 0 preload turn in as many turns as the preload you want Each turn correspond...

Page 5: ...n the diagram then look at the arrows to determine which other parts you need to remove first DISASSEMBLY DIAGRAM FORK LEG OIL CHANGE PUMPING ROD CHANGE FOOT NUT FIG 3 SPRING FIG 2 DUST SEAL FIG 5 STOP RING 6 OIL SEAL FIG 7 FOOT BUFFER FIG 10 PUMPING ROD FIG 10 REBOUND SPRING FIG 10 PILOT BUSHING AND SEAL ASSEMBLY CHANGE STANCHION TUBE CAP FIG 1 CROWN AND STANCHIONS ASSEMBLY FIG 4 SPRING CHANGE VA...

Page 6: ...e lower washer 7 and the spring 8 from each fork leg Drain all oil from the fork legs WARNING Remember to always recycle any used oil To change the fork leg oil follow the proce dure as described in section REASSEM BLY from Fig 22 to Fig 24 PILOT BUSHING AND SEAL ASSEMBLY CHANGE FIG 3 Turn the fork leg upside down and unscrew the foot nuts 21 by the use of a 15 mm socket wrench 5 6 8 7 21 ...

Page 7: ... 5 Remove the dust seal 15 from the top of the sliders using a small screwdriver FIG 6 Remove the stop ring 16 from the sliders by placing the screwdriver bit in one of the three openings on the stop ring IMPORTANT when removing the stop ring make sure not to damage its seat 1 20 15 16 ...

Page 8: ...n removing the oil seal make sure not to damage its seat Once removed the oil seals should not be used again FIG 8 Remove the upper washer 18 from the slider FIG 9 Fit the bit of a small screwdriver into upper edge slot of the pilot bushing 19 and lift gently Pull the bushing out of the slider and make all necessary changes 17 A 18 19 ...

Page 9: ...ound springs 11 for every pump ing element Replace the seal ring 9 if damaged or worn out VALVE ASSEMBLY CHANGE FIG 11 To check that the valve assembly is operat ing correctly it is necessary to work on the inside of the stanchion tube Slip off the stop ring 13 using pointed pliers Pull the valve assembly out of the tube with one finger in the same sequence as in the figure covering 36 valve 35 an...

Page 10: ... Check that no dirt or debris is between slider and bushing Insert the pilot bushing 19 into place so that it adheres to the slider FIG 13 Fit the upper washer 18 into the slider so that it touches the pilot bushing FIG 14 Lubricate the oil seal 17 and place it onto the seal press B with the hollow side toward the slider Press the oil seal until it touches the lower washer by using the above seal ...

Page 11: ...BLY FIG 17 After having overhauled or replaced the valve unit and after having cleaned the inside of the tube reassemble Assemble valve components in correct sequence washer 12 valve 35 and covering 36 Then fit seal ring 10 on pumping element 9 In pumping element fitted to forks with a travel of 100 only fit one rebound spring 11 or two rebound springs 11 for a travel of 80 Insert the complete pum...

Page 12: ...ges to sealing surfaces keep the stanchions duly lubricated and squared into the sliders Press the crown and stanchions assembly fully down and check that threaded ends of pumping elements 10 are coming out through the bottom of the sliders Check to see that the stanchions slide unre stricted by cycling the fork up and down several times The tube should slide freely inside the seal assembly withou...

Page 13: ... pumping them up and down several times Nm 11 21 HOW TO FILL WITH OIL FIG 22 Pour oil little by little when the stanchions are fully down and then pump with the crown so as to have a better filling Check that the oil level H is as required in both legs SPRING AND CAP FIG 23 Fit the spring 8 and washer 7 into each stanchion tube H Travel mm H mm 80 25 100 45 8 7 ...

Page 14: ...rn the preload adjuster 4 inside the cap until setting minimum preload see section ADJUSTMENT Start the complete cap assembly into the stanchion tube thread by hand Tighten the cap 5 to 20 Nm Set spring preload as specified in section ADJUSTMENT Nm 20 5 6 ...

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