F 7.2 3
F_7.2_01_GB.fm 3-4
1.2 Points of maintenance
Track tightness (1)
m
Slack tracks may slip out of the guides of
the rolls, drive and guide wheels and in-
tensive wear may take place.
m
Too tight tracks add to the wear of guide wheels and drive bearings, the pins and
bushes of the tracks as well.
Track tension: checking / adjusting:
- Track tightness can be adjusted with
grease press. The filling ports are lo-
cated on the LH and RH sides of the
running gear.
- Remove the screws (A).
- Remove cap (B).
- Screw the head module of the flat
grease nipple (toolbox) on the grease
press.
A
Over a length (L) of 1-1.5 m, slack (F) of
2-3 cm must be present. This applies in
linear fashion if the free length (L) is less
than or equal to 1-1.5 m (at least 4 track
links).
The extent of slack in the track is estab-
lished using a measuring rule. This in-
volves the dimension (F) being mea-
sured from the edge of the baseplate to
the measuring rule (at the centrepoint of
the slack in the track).
- Keep pressing grease into the track
tightening cylinder until the required
tightness is achieved.
A
On completion of the tensioning process, the grease gun is removed. Now the trac-
tion unit should be moved backwards and forwards approx. 1 complete turn of the
drive wheel. Check the position of tracks on idler wheel and drive wheel.
A
Repeat this procedure on both drive units!
- Remount the lid (B).
LW_DEM2.bmp
x
B
A
Spann_LWDEM.bmp
B
L
F
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