Instrukcja obsługi Shimano FD-M781

Shimano Różnorodny FD-M781

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One Holland, Irvine, California 92618, U.S.A. Phone: +1-949-951-5003 Industrieweg 24, 8071 CT Nunspeet, The Netherlands Phone: +31-341-272222 3-77 Oimatsu-cho, Sakai-ku, Sakai-shi, Osaka 590-8577, Japan
General Safety Information
WARNING
• Be careful not to let the cuffs of your clothes get caught in the chain while riding, otherwise you may fall off
the bicycle.
•Obtain and read the service instructions carefully prior to installing the parts. Loose, worn or damaged
parts may cause the bicycle to fall over and serious injury may occur as a result. We strongly recommend
only using genuine Shimano replacement parts.
•Obtain and read the service instructions carefully prior to installing the parts. If adjustments are not
carried out correctly, the chain may come off and this may cause you to fall off the bicycle which could result
in serious injury.
• Read these Technical Service Instructions carefully, and keep them in a safe place for later reference.
Note
• This front derailleur is for triple front chainwheel use only. It cannot be used with the double front
chainwheel, as the shifting points do not match.
• If gear shifting operations do not feel smooth, wash the derailleur and lubricate all moving parts.
• If the amount of looseness in the links is so great that adjustment is not possible, you should replace the
derailleur.
• When the chain is in the position shown in the illustration, the
chain may contact the front chainrings or front derailleur and
generate noise. If the noise is a problem, shift the chain onto
the next-larger rear sprocket or the one after if the chain is in
the position shown in Figure 1. Shift the chain onto the next-
smaller sprocket or the one after if it is in the position shown in
Figure 2.
• For frames with suspension, the chain stay angle will vary
depending on whether the bicycle is being ridden or not being
ridden. When the bicycle is not being ridden and the chain is positioned on the largest/larger chainring and
on the smallest sprocket, the chain guide outer plate of the front derailleur may touch the chain.
• Shimano does not provide the bottom bracket mount fixing bolts.
• For smooth operation, use the specified outer casing and the bottom bracket cable guide.
• Parts are not guaranteed against natural wear or deterioration resulting from normal use.
• For maximum performance we highly recommend Shimano lubricants and maintenance products.
• For any questions regarding methods of installation, adjustment, maintenance or operation, please contact a
professional bicycle dealer.
• Be sure to read the service instructions for the Front Drive System in conjunction with these service
instructions.
Cutting the outer casing
When cutting the outer casing, cut the
opposite end to the end with the marking.
After cutting the outer casing, make the
end round so that the inside of the hole
has a uniform diameter.
Attach the same outer
end cap to the cut end of
the outer casing.
Outer end cap
After taking up the initial slack in the cable, re-secure to the front
derailleur as shown in the illustration.
Normal type Top route type
Pull
Pull
Set the height of the front derailleur. The flat
section of the chain guide outer plate should
be directly above and parallel to the largest
chainring. Secure using a 5 mm allen key.
Installation of the front derailleur
Tightening torque :
5 - 7 N·m {44 - 60 in. lbs.}
Chain guide
Chainwheel (largest chainring)
Pro-Set alignment
block
SIS Adjustment
Low adjustment
screw
Chain
Chain guide
inner plate
Pro-Set alignment
block Chain position
Largest
sprocket
Smallest
chainring
3. Top adjustment
Set so that the clearance
between the chain guide outer
plate and the chain is 0 - 0.5
mm.
Chain position
Smallest
sprocket
Largest
chainring
SI-5N30A-001-00
Specifications
SI-5N30A-001 Technical Service Instructions
FD-M780 / FD-M780-E
FD-M781 / FD-M781-D Front derailleur
• FD-M781-D• FD-M780 / M781
• FD-M780-E
Models without BB plate
Tightening torque :
5 - 7 N·m {44 - 60 in. lbs.}
Bottom bracket
mount
Bracket
Example: When using an Allen key
Bottom bracket mount fixing bolt
Note: Shimano does not provide
the bottom bracket mount
fixing bolts.
< Normal type >
• FD-M780 / FD-M780-E
FD-M780-E (Models without BB plate)
< Top route type >
8 mm spanner
Tightening torque :
6 - 7 N·m {52 - 60 in. lbs.}
Note:
Pass the cable through as
shown in the illustration.
Wire fixing bolt
< Normal type >
• FD-M781
< Top route type >
5 mm Allen key
4 mm Allen key
Note:
Pass the cable through as
shown in the illustration.
Wire fixing bolt
< Normal type >
• FD-M781-D
< Top route type >
5 mm Allen key
Note:
Pass the cable through as
shown in the illustration.
Wire fixing bolt
* Service Instructions in further languages are available at : http://techdocs.shimano.com
Please note: specifications are subject to change for improvement without notice. (English) © Dec. 2010 by Shimano Inc. XBC SZK Printed in Japan.
Inner hole cover
2. Connecting and securing the inner cable
Switch the mode converter to the 3x (triple mode) position,
and then check the lowest position. Operate lever B two
times or more to set the lever to the lowest position.
Remove the inner hole cover, and install the cable.
Inner hole cover
Inner cable
Lever (B)
Note:
Do not force the mode select switch to turn. If you force it to
turn, it will break.
Mode converter
Mode select switch
Normal type
Top route type
Front chainwheel tooth difference
Min. difference between top and intermediate
Front derailleur installation band diameter
Chainstay angle (a)
Applicable chain line
X = Available
Chain
Chain guide
outer plate
Chain
Chain guide
inner plate
Outer casing adjustment barrel
4. Adjustment of the intermediate
chainring
When carrying out adjustment, set the
chain to the largest sprocket, and at the
front, set the chain to the intermediate
chainring. Adjust using the outer casing
adjustment barrel so that the clearance
between the chain guide inner plate
and the chain is 0 - 0.5 mm.
Chain position
Largest
sprocket
Intermediate
chainring
If the chain falls to the crank
side.
If shifting is difficult from the
intermediate chainring to the
smallest chainring.
Tighten the top adjustment screw
clockwise (about 1/4 turn).
Loosen the top adjustment screw
counterclockwise
(about 1/8 turn).
Loosen the low adjustment screw
counterclockwise
(about 1/4 turn).
If there is interference between
the chain and the front derailleur
inner plate at the largest
chainring.
If there is interference between
the chain and the front derailleur
outer plate at the largest
chainring.
Tighten the top adjustment screw
clockwise (about 1/8 turn).
Loosen the top adjustment screw
counterclockwise
(about 1/8 turn).
If the intermediate chainring is
skipped when shifting from the
largest chainring.
Loosen the outer casing
adjustment barrel
counterclockwise (1 or 2 turns).
If the chain falls to the bottom
bracket side.
If the lever is stiff when shifting
from the intermediate chainring
to the largest chainring.
Tighten the outer casing
adjustment barrel clockwise
(1 or 2 turns).
Tighten the low adjustment screw
clockwise (about 1/2 turn).
Loosen the top adjustment screw
counterclockwise (about 1/4
turn).
5. Troubleshooting chart
After completion of steps 1 - 4, move the shifting lever to check the
shifting. (This also applies if shifting becomes difficult during use.)
If the chain does not shift
smoothly from the intermediate
chainring to the largest chainring
even though the top adjustment
bolt has been adjusted.
Turn the outer casing adjustment
barrel about 1/4 of a turn
counterclockwise.
If the chain does not shift
smoothly from the intermediate
chainring to the smallest
chainring even though the low
adjustment bolt has been
adjusted.
Turn the outer casing adjustment
barrel about 1/4 of a turn
clockwise.
If there is interference between
the chain and front derailleur
inner plate when the rear
sprocket is shifted to the largest
sprocket when the chainwheel is
at the intermediate chainring
position.
If shifting is difficult from the
intermediate chainring to the
largest chainring.
Note:
When installing the components to carbon frame/handle bar surfaces, verify with the manufacturer of the carbon
frame/parts for their recommendation on tightening torque in order to prevent over tightening that can cause
damage to the carbon material and/or under tightening that can cause lack of fixing strength for the components.
For bracket type
Install as shown in the illustration.
Bolt
AdapterAdapter
Front Derailleur
Front Chainwheel
1,2Tightening torque :
35 - 50 N·m {305 - 435 in. lbs.}
3Tightening torque :
5 - 7 N·m {44 - 60 in. lbs.}
Install the front derailleur as shown in the
illustration. At this time, adjust the position of
the front derailleur while installing it so that
there is a clearance of 1 - 3 mm between the
chain guide outer plate and the maximum outer
diameter of the larger chainring.
Chain guide outer plate
Maximum outer diameter
Pro-Set gauge
1~3mm
Clearance:
Tightening torque :
5 - 7 N·m {44 - 60 in. lbs.}
155.5mm*
42T
159.5mm*
42T
FD-M781
FD-M781-D
FD-M780
FD-M780-E
Top adjustment
screw
FD-M781
FD-M781-D
FD-M780
FD-M780-E
Use an 8 mm spanner or a 4 mm Allen key to tighten the wire
fixing bolt.
Install the inner hole cover by turning it
as shown in the illustration until it
stops.
Do not turn it any further than this,
otherwise it may damage the thread
on the cover.
Applicable front chainwheel
X
X
18T
10T
66° - 69°
50 mm
For triple chainwheel only (42-32-24T)
S, M, L –S, M, L –
Model number
FD-M781-DFD-M781FD-M780-EFD-M780
* The installation height will vary depending on the
position of the frame washer.
155.5 mm / 159.5 mm*
(From bottom bracket
center)
Front
chainrings
Fig.1 Fig.2
Rear
sprockets
Be sure to follow the sequence described below.
* If the bicycle has rear suspension, first check the recommended segment position according to
the owner's manual for the bicycle. Next, use a fixing band or similar to set the rear suspension to
the recommended stroke for the rear suspension, and then adjust the front derailleur.
1. Low adjustment
First remove the Pro-Set alignment block.
Next, set so that the clearance between the chain guide inner
plate and the chain is 0 - 0.5 mm.

Specyfikacje produktu

Marka: Shimano
Kategoria: Różnorodny
Model: FD-M781

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