Installing The Drive Pinions; Removing Ball Bearings From Drive Pinions; Installing Ball Bearings On Drive Pinions - Stihl 4180 Series Service Manual

2
4
3
1
Take pinions (2, 10) with ball bearings out of the lower
N
half of the gear housing (1).
If necessary, remove ball bearings from drive pinions,
N
@ 4.9.
4.8

Installing the Drive Pinions

If necessary, install ball bearings on drive pinions, @
N
4.10.
2 10
4
3
1
Hold the drive pinions (2, 10) so that the smaller
N
pinion (10) is positioned above the narrower seat
(arrow) in the lower half of the gear housing (1).
Fit drive pinions (2, 10) together so that their teeth
N
mesh and hold them in that position.
Place both drive pinions (2, 10) in their seats in the
N
lower half of the gear housing (1) at the same time.
Apply about 5 g gear grease between the drive
N
pinions (2, 10).
4
10
3 4
3
4
7
Fill sealing grooves in upper half of the gear housing
N
(7) with a bead of sealant that is
2 - 3 mm high (a).
Fit upper half of gear housing (7) in position.
N
Insert the screws (9) and tighten them down in a
N
crosswise pattern.
Fit the screws (8).
N
Fit the screws (11).
N
Install the drive tube, @ 4.6.
N
Install angle drive gear, @ 4.4.
N
4.9

Removing Ball Bearings from Drive Pinions

Preparations, @ 3.1.
N
Remove angle drive gear, @ 4.3.
N
Remove the drive tube, @ 4.5.
N
Remove the drive pinions, @ 4.7.
N
Use puller 5910 890 8100 to pull the ball bearings (3,
N
4) off the pinions (2, 10).
4.10

Installing Ball Bearings on Drive Pinions

Note installed positions of ball bearings:
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Ball bearings with steel seal at both sides (3) first,
then ball bearings with nylon seal at both sides (4).
Use press sleeve 1113 893 4600 to press the ball
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bearings (3, 4) onto drive pinions (2, 10) as far as
stop.
Install the drive pinions, @ 4.8.
N
Install the drive tube, @ 4.6.
N
Install angle drive gear, @ 4.4.
N
HT Angle Drive Gear - Telescopic Drive Tube