Track to Machine Clearance
In order to avoid tracks hitting or fouling the machine bunk or bodywork (which can in extreme cases cause transmission problems), a minimum clearance gap of 50mm between track and machine should be ensured and tracks kept correctly tensioned at all times.
This clearance gap should be measured with the track pushed on the tyres towards the machine with the bogey at maximum tilt angle (ie. at the worst possible situation). Where clearance of less than 50mm exists, there is a possibility of track/machine fouling when tracks wear, become slack and are run at faster than normal speeds etc.
** ADEQUATE CLEARANCE MUST BE ENSURED **
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NOTES: Many 8 wheel drive machines have less clearance at the front of the machine for tracks than at the back. When tracks are fitted to the front of the machine, ensure there is adequate clearance between tracks and machine bodywork and, in particular, check clearance from doors, air intakes, front blades, cab ladders (steps) etc. at all bogey tilt angles with tracks pushed towards the machine on the tyres. When tracks are fitted to the rear of the machine, clearance is required between the tracks and the bunk frame. When bunk frames are repositioned, e.g. for different timber lengths, this can change track to frame clearances and must also be checked. Some machines are fitted with hydraulic bogey lifting rams and may be unsuitable for use with tracks due to inadequate clearances. Checks must be made prior to fitting tracks. |
If you are in doubt about fitting tracks to your machine, the machine manufacturer must be consulted.
SLACK TRACKS
Where tracks are run too slack, with excessive amount of centre sag, not only is there a potential problem with tracks falling off, there is also a danger of tracks hitting and rubbing on bogey drive boxes and in extremely neglected cases, wear grooves and holes in the drive box.
Track tension should be checked regularly.