Testing and adjusting travel deviation 1
Inspection
1. Run the engine and heighten the hydraulic oil
temperature to the operating range and set the
machine in the travel posture.
a To set the machine in the travel posture,
extract the bucket cylinder and arm cylin-
der fully and set the boom angle to 45°.
2. Set the working mode to P and travel speed to
Lo.
3. Run up for 10 m with the engine speed at high
idle and continue travel under the same condi-
tion for 20 m and test the deviation (a).
a Install an oil pressure gauge and check
that the P1 and P2 discharge pressures of
the hydraulic pump are even.
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