Testing And Adjusting Track Shoe Tension - Komatsu ecot3 PC300LC-8 Shop Manual

SEN02625-06
Testing and adjusting track shoe
tension
Inspection
1. Travel the machine forward by the length of track
on ground with the engine at low idle and then
stop the machine slowly.
2. Place straight bar [1] on the track shoe between
the idler and the 1st carrier roller.
a L beam is recommended for bar [1] because
of its deflection-free nature.
3. Measure maximum clearance (a) between bar
[1] and the track shoe.
Standard clearance (a): 10 - 30 mm
q
34
Adjustment
a If the track shoe tension is not proper, adjust it in
the following manner.
1. When the tension is too strong
Loosen valve (1) to discharge the grease.
k
Do not loosen the valve more than 1 turn.
Otherwise, the valve may jump out be-
cause of the high-pressure grease inside.
2.
When the tension is too weak
Push in grease through grease fitting (2).
a If the normal track shoe tension is not re-
stored even after greasing, move the ma-
chine slowly back and forth.
30 Testing and adjusting
PC300, 350-8