Shimano NEXUS SG-7C26 Manual de usuario

SERVICE MANUAL

vol.1

SG-7C26

SHIMANO NEXUS 7-SPEED HUB

Disassembly of the Inter-7 hub

Hold the two bevelled surfaces

of the hub axle on the brake

arm side in a vice and remove

the dust cap with a screwdriver.

Turn the brake arm unit

upside down and hold

the two bevelled surfaces of

the hub axle on the sprocket

side in a vice.

SG-7C26

Tools

Note:

Unit parts should never be

disassembled. If they are,

problems may result.

When replacing parts,

replace the whole internal

assembly or unit part.

Note:

Before carrying out

disassembly, have ready

the hub spanners(TL-7S20)

and internal hub grease.

Note:

Do not damage the threads of

the hub axle.

Vice

Note:

Do not damage

the threads of

the hub axle.

Lock nut

Stop nut

Hub spanners

Part No. 3-130 9890

17mm x 22mm(2 pcs.)

TL-7S20

(Right)

Screwdriver

(Left)

Remove the left hand lock nut

from the hub axle, and then

remove the stop nut.

TL-7S20

Remove the brake arm unit

and ball retainer B from

the hub axle.

Remove the hub shell.

Remove the brake shoe unit.

Now it can be replaced

with the new internal

assembly.

Disassembly and assembly can

be carried out quickly.

Part No. 33Z 9801

Ball retainer B

Brake arm unit

Internal assembly

Hub shell

Brake shoe unit

Remove the stop ring with

a screwdriver.

At this time, the stop ring

come off with great force.

Be careful of the safety using

cloth and so on.

Note:

If undue force is applied during

removal, the pawls inside will

become damaged, which will

cause operation problems.

After removing them at the same

time, remove carrier unit 2 from

ring gear unit 2.

Remove sun gear unit 2 and 3

while turning them slightly to

the left and right.

Remove carrier unit 1.

Remove ring gear unit 2 and

carrier unit 2 at the same time

while turning ring gear unit 2

slightly to the left and right.

Carrier unit 2

Ring gear unit 2

Carrier unit 1

Stop ring

Screwdriver

Carrier unit 2

Ring gear unit 2

Sun gear unit 2 & 3

10.

Remove ring gear unit 1 while

turning it slightly to the left

and right.

11.

Remove ball retainer H while

pressing in pawl C on the

driver and axle unit with a

screwdriver.

Be careful not to bend ball

retainer H.

This completes the disassembly

of the Inter-7 hub.

Screwdriver

Ring gear unit 1

Ball retainer H

Pawl C

Assembly of the Inter-7 hub

Install ball retainer H while

pressing in pawl C on the

driver and axle unit with a

screwdriver.

Insert the end of the slide

spring of ring gear unit 1 into

the wide hole section B of the

driver and axle unit, press in

pawl C (2 places) with a

screwdriver, and then install

ring gear unit 1.

Hold the two bevelled surfaces

of the hub axle on the sprocket

side in a vice.

Note:

Apply a liberal coating of internal

hub grease to the gear inside ring

gear unit 1.

Check:

After installing ring gear unit

1, turn ring gear unit 1 firmly

counterclockwise to check to

be sure that pawl C makes a

clicking sound.

Note:

Do not damage the threads of

the hub axle.

Note:

Be careful of the

setting direction.

Apply a liberal coating of

internal hub grease.

Be careful not to bend ball

etainer H while pressing it.

Be careful not to catch on the end

of return spring C.

(Y-041 20800)

GREASE

(Y-041 20800)

GREASE

Ring gear unit 1

Vice

Screwdriver

Ball retainer H

Wide hole section B

Pawl C

End of slide spring

Engage the teeth of sun gear

unit 2 and 3 with the teeth of

the planet pinion in carrier

unit 1 while turning sun gear

unit 2 and 3 slightly to the left

and right, and then press in

carrier unit 1.

Engage the teeth of the planet

pinion in carrier unit 1 with

the teeth of ring gear unit 1,

and then press in ring gear

unit 1 while turning it slightly

to the left and right.

Note:

Apply a liberal coating of internal

hub grease to the teeth of sun

gear unit 2 and 3.

Be careful of the setting

direction. If the setting is

reversed, installation

will not be possible.

If undue force is applied,

the pawls inside will become

damaged, which will cause

operation problems.

The gear with the smooth ring

section is at top.

Note:

Apply a liberal coating of internal

hub grease to the planet pinions

(3 places) in carrier unit 1.

Place ring gear unit 2 onto

carrier unit 1.

Note:

Apply a liberal coating of internal

hub grease to the teeth of ring

gear unit 2.

Set so that the part with

the teeth is at the top.

(Y-041 20800)

GREASE

(Y-041 20800)

GREASE

(Y-041 20800)

GREASE

The gear with the smooth

ring section is at top.

Teeth of planet pinion

in carrier unit 1

Teeth of ring gear unit 1

Ring gear unit 2

Carrier unit 1

Sun gear unit 2 & 3

Engage the teeth of the planet

pinion in carrier unit 2 with

the teeth of ring gear unit 2

while turning carrier unit 2

slightly to the left and right,

and then press in ring gear

unit 2.

Note:

Apply a liberal coating of internal

hub grease to the inside and

outside of the brake shoe unit.

Note:

Apply a liberal coating of internal

hub grease to the grease groove

of the hub shell.

If seal spring R hooks into

the wrong part of the right hand

dust cap, push seal spring R with

a screwdriver.

Check:

After installing the hub shell, turn

the hub shell counterclockwise

and check to be sure that it turns

smoothly.

Note:

Apply a liberal coating of internal

hub grease to the teeth of

the planet pinion (3 places) in

carrier unit 2.

If undue force is applied,

the pawls inside will become

damaged, which will cause

operation problems.

Check:

Check to be sure that the stop

ring groove on the hub axle is

visible from the edge of carrier

unit 2 while carrier unit 2 is

pushed down.

Align the notched section of

the brake shoe unit with

the end of slide spring in

carrier unit 2, and then install

the brake shoe unit.

10.

Install the internal assembly

while turning the hub shell

slightly to the right and left so

that seal spring R of the hub

shell is sitting in the right

hand dust cap of the internal

assembly.

While pushing down carrier

unit 2, insert the stop spring

into the hub axle groove at

the surface of carrier unit 2.

Teeth of planet pinion

in carrier unit 2

Teeth of ring gear unit 2

Hub axle groove

should be visible

Notched section

of the brake shoe unit

End of slide spring

Stop ring

Carrier unit 2

Seal spring R

Grease

groove

Right hand

dust cap Hub shell

Internal

assembly

(Y-041 20800)

GREASE

(Y-041 20800)

GREASE

(Y-041 20800)

GREASE

TL-7S20

Lock nut

Stop nut

This completes the assembly

of the Inter-7 hub.

14.

Install the dust cap

11.

Place ball retainer B onto

the hub shell.

Note:

Apply a liberal coating of internal

hub grease to the inside and

outside of the brake shoe unit.

Note:

Be careful of the setting

direction.

Apply a liberal coating of internal

hub grease.

12.

13.

Screw the stop nut to adjust so

that the hub shell can be

turned smoothly without any

play. After adjusting, secure

the stop nut with the lock nut.

Place the brake arm unit onto

the hub axle and turn it to

the left and right so that

the serrations of the brake

shoe and brake arm unit

engage with each other.

Then push the brake arm unit

fully into the brake shoe unit.

Ball retainer B

Hub shell

Brake arm unit

Brake shoe unit

Serrations

(Y-041 20800)

GREASE

(Y-041 20800)

GREASE

Spare parts list

DESCRIPTIONQ'TY SHIMANO

CODE NO.

ITEM

NO.

Internal Assembly (Axle Lengt 175.5 mm)

Brake S oe Unit

Stop Ring ( 9 mm)

Carrier Unit 2

Ring Gear Unit 2

Sun Gear Unit 2 & 3

Carrier Unit 1

Ring Gear Unit 1

Ball Retainer H (3/16" x 29)

Axle & Driver Unit (Axle Lengt 175.5 mm)

w/Rig t Hand Dust Cap B & C

Rig t Hand Dust Cap B

Rig t Hand Dust Cap C

Cassette Joint Fixing Ring

Axle Unit (Axle Lengt 175.5 mm)

Return Spring A

Gear S ifting Cam

Feed Cam

Driver Unit w/Rig t Hand Dust Cap B & C

Driver Unit

Ball Retainer F (3/16" x 12)

Rig t Hand Cone w/Seal

Rig t Hand Cone Seal

Driver Plate w/Seal

Driver Plate Seal

Lock Was er

Stop Was er

Rig t Hand Lock Nut (3.4 mm)

Cap Nut (3/8")

Non-turn Was er 5R (Yellow)

Non-turn Was er 6R (Silver)

Non-turn Was er 7R (Black)

Non-turn Was er 5L (Brown)

Non-turn Was er 6L (W ite)

Non-turn Was er 7L (Gray)

Lock Nut (3.5 mm)

Stop Nut

Brake Arm Unit

Ball Retainer B (3/16" x 16)

Sprocket W eel 18T

Sprocket W eel 19T

Sprocket W eel 20T

Sprocket W eel 21T

Sprocket W eel 22T

Snap Ring C

CJ-NX10 Cassette Joint Unit

Driver Cap

CJ-NX10 Cassette Joint

Inner Cable Fixing Bolt Unit for CJ-NX10

Brake Arm Clip Unit (5/8")

Brake Arm Clip Unit (3/4")

Clip Screw (M6 x 16)

Clip Nut

TL-7S20 Hub Spanner (17 mm x 22 mm) 2 pcs.

TL-7S40-B Rig t Hand Cone Tool

Internal Hub Grease (Net. 100g)

Y-35B

Y-330

Y-325

Y-330

Y-33F

Y-330

Y-35B

Y-33Z

Y-34N

Y-330

Y-33Z

Y-35B

Y-35C

Y-330

Y-33Z

Y-33F

Y-330

Y-33E

Y-33Z

Y-314

Y-33Z

Y-33M

Y-321

Y-335

Y-33D

Y-330

Y-322

Y-330

Y-321

Y-74Y

Y-33F

Y-75M

Y-317

Y-130

Y-308

Y-041

98010

32000

98040

98020

98060

98050

98070

98020

05000

26000

98020

98030

24000

10000

11000

98030

98040

91600

98030

28000

98040

12000

98120

08000

07020

14010

20500

39600

39700

39510

39610

39710

38040

48110

90100

98110

03420

03520

03620

60000

60100

20010

98050

18000

93100

98060

98090

98100

06000

27200

98900

89000

20800

PE-LD

TL-7S20

JAPAN

TL-7S20

JAPAN

TL-7S20

Int rnal Hub Gr as

(For coast r brak also)

TL-7S40-B

Int rnal Ass mbly

11 12 13

2345 6 789

11 12 13

11 12

14 15 16 17

19 20

24 24 25

26 27

JAPAN

CJ-NX10

42 43

30 31 32

33 34

38 39

SG-7C16

SHIMANO NEXUS 7-SPEED HUB w/Coast r Brak

Int r-7 Hub

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