Removing, Disassembling And Reassembling Gearbox Shafts; Removing Gearbox Shafts; Disassembling And Reassembling Mainshaft - BMW F 650 GS Repair Manual

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Removing, disassembling
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and reassembling gearbox shafts

Removing gearbox shafts

•
Pull sliding gears (13, 16) with bearing (15) and
washer (14) off the mainshaft.
•
Tap mainshaft (1) and countershaft (17) lightly
with a plastic-faced hammer and remove them.
Disassembling and reassem-
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bling mainshaft
•
Clamp the mainshaft in a vise fitted with protec-
tive jaws.
e
Important:
Do not alter the stop on the special pliers,
BMW No. 23 4 500, in order to avoid opening up the
circlip too much.
•
Using special pliers, BMW No. 23 4 500, push
back circlip (7) slightly so that circlip (12), which
is retained by angled ring (11), can be removed.
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3
6
5
2
9
4
8
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Check all bearings, bearing journals, tooth edges,
keyways and annular grooves for wear,
always replace gearwheels complete with their
matching gearwheels as pairs.
Edges of ring grooves must not be rounded.
Always renew circlips and install them only with spe-
cial pliers, BMW No. 23 4 500.
•
•
10
7
12
11
14
17
Pull off gearwheel (10) with needle roller
bearing (9) and washer (8).
Remove retaining ring (7).
Remove gearwheel (6).
Remove circlip (5) with washer (4).
Pull off gearwheel (3).
Pull off needle bearing (2).
Note:
Installation is the reverse of the removal proce-
dure: pay particular attention to the following.
Position retaining ring (7) approx. 3 mm (0.12 in)
below the groove. After installing retaining
ring (12), push retaining ring (7) up with
gearwheel (6) until the retaining ring is seated in
its groove.
13
15
16
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