Precautions With High-Pressure Grease When Adjusting Track Tension; Do Not Disassemble Recoil Spring - Komatsu D155A-6 Operation & Maintenance Manual

PRECAUTIONS FOR MAINTENANCE

PRECAUTIONS WITH HIGH-PRESSURE GREASE WHEN ADJUSTING TRACK TENSION

Grease is pumped into the track tension adjustment system
under high pressure. If the specified procedure for maintenance
is not followed when making adjustment, grease drain valve (1)
may fly out and cause serious injury or damage.
When loosening grease drain valve (1) to loosen track tension,
never loosen it more than one turn. In doing so, loosen the valve
slowly.
Never put your face, hands, feet, or any other part of your body
directly in front of grease drain valve (1).

DO NOT DISASSEMBLE RECOIL SPRING

Never disassemble the recoil spring assembly. The recoil spring
assembly has a powerful spring that acts to reduce the impact on
the idler. If it is disassembled by mistake, the spring may shoot out
and cause serious personal injury or death.
It is necessary to disassemble the recoil spring assembly, always
ask your Komatsu distributor to carry out the operation.
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SAFETY