Shimano FH-6400 Freehub Service Instructions

SERVICE INSTRUCTIONS
Shimano 600 Ultegra Freehub
SHIMANDESOO
UL JT EGIRA
FH-6400-7 (7-speed)
FH-6400-6 (6-speed)
Before use, read these instructions carefully, and follow them for correct use.
M Specifications
| | For7-speed | For 6-speed
Weight 6239! 6084!
Material Light alloy, steel
Suitable chain size 1/2" x 3/32"
Spoke hole diameter 2.6mm
Number of spoke holes 36H / 32H / 28H
Over lock nut demension 126mm
Chain line 41.9mm 42mm
Dishing distance ©? 74mm emm
Top gear 12T-16T
Numberof | Second gear
sprocket | (builtin spacer type) 137 137
teeth
Spline gear 14T-26T, 287
Top gear screw measurement
B.C. 34.6 x 24T.P1.
#1: These weights were measured al lhe following combinations of teeth.
For 7-speed type (12-13-14-15-17-19-21T)
For 6-speed type (13-14-15-17-19-21T)
2: The dishing distance is the distance between lhe center line of the lock
nuis and the center line of the flanges.
ENote
e Be sure to use the sprocket fixing bolt, sprocket spacer and
gear (for the 7-speed or 6-speed type) as a set. Note that the
spline gear (except the built in spacer type) can be used in
common for the 7-speed and 6-speed types.
{Identification of gear and sprocket spacer)
=) For 7-speed For 6-speed
ona IE, IL
7 ZN
Second gear ANDE y Je
built | A EHR у
(built in spacer) > A ® 66
Other spline
gears Te INDEX
pri €
(Plastic; dark grey)
3.3mm
Sprocket spacer A
For second gear
® Sprocket spacer A is
unnecessary if a 13-teeth
sprocket is used.
(Steel)
For top gear
® Sprocket spacer A is
unnecessary if a 12-teeth
sprocket is used.
(Plastic; dark grey)
315mm
Sprocket spacer B
For third gear - low gear
(Plastic; light grey)
3.7mm
0
For second gear - low gear
® Sprocket spacer B is
unnecessary if a 13-teeth
sprocket is used.
Sprocket fixing bolt
E
peor
— 1m
E 23.2mm =>
e lfthe 7-speed type is used, be sure to use a narrow-type chain
(Shimano CN-6208, CN-7400, etc.).
Assembling the gears
Install each gear so that the mark (indicating the number
of teeth) is at the top.
E
Mark
(number of
For the 7-speed type ...
Align the concave part (mark) with the position of the
sprocket fixing bolt, and then install.
Sprocket fixing bolt Second gear
Concave part
Note: Sprocket spacer A and fixing bolts are unnecessary
if a second gear with 13-teeth is used.
For the 6-speed type ...
Align the three notches (*mark) of sprocket spacer А
with the position of the sprocket fixing bolt, and then
install.
Sprocket fixing bolt Top gear
Note: Sprocket spacer A and fixing bolts are unnecessary
if a top gear with 12-teeth is used.
Replacement of the freewheel body
After removing the hub axle, remove the freewheel body
fixing bolt (in the freewheel body), and then replace the
freewheel body.
Note: Do not attempt to disassemble the freewheel
body, because to do so may lead to problems.
Freewheel body Freewheel body fixing bolt
Loosen.
| TL-WR37
Hexagonal wrench
(10mm)
Changeover from 6-speed use to
7-speed use
To change the hub axle assembly from 6-speed use to
7-speed use, move the washer (1.2mm) from the left
side of the hub axle to the right side.
Position for
Position for
6-speed use
Washer (2.3mm)
Washer (1.2mm) Washer (1.2mm)
" Please nole: Specilicauons are subject to change lor improvement wilhoul notice (English)
SHIMANO AMERICAN CORPORATION
One Shimano Drive, Irvine, California U.S.A, 92718 Tel. {7 14) 951-5003
SHIMANO (EUROPA) GmbH.
Im Hülsenfeld 13 4010 Hilden, West Germany Tel. 02103-5005-0
SHIMANO (SINGAPORE) PTE. LTD.
No. 20, Benoi Sector, Jurong Town, Singapore 2262 Tel. 2654777
SHIMANO INDUSTRIAL CO.,LTD.
3-77 Oimatsuche, Sakai, Osaka, Japan Tel. (0722) 23-3243
© Nov. 1987 by Shimano R-1 PIT SHS Printed in Japan