Testing And Adjusting Track Shoe Tension - Komatsu Galeo PC800-8 Shop Manual

30 Testing and adjusting
Testing and adjusting track
shoe tension
Testing
1. Travel the machine forward by the length of
track on ground, keeping the engine at low idle,
and stop the machine slowly.
2. Place wood bar [1] on the track shoe between
second carrier roller (1) and third carrier roller
(2).
a L beam is recommended for bar [1], because
of its deflection-free nature.
3. Measure max. clearance (a) between bar [1]
and the track shoe.
• Max. standard clearance (a): 10 – 30 mm
PC800, 850-8
Adjusting
a If the track shoe tension is not proper, adjust it in
the following manner.
1. When the tension is too strong
Discharge grease by loosening valve (3).
k Do not loosen valve (3) by more than one
turn, because grease will spurt due to its in-
ternal high pressure.
2. When the tension is too weak
Add grease through grease fitting (4).
a If the normal track shoe tension is not re-
stored even after greasing, move the ma-
chine slowly back and forth.
SEN00788-02
3