Fiat Kobelco EX355 Tier2, Technical Manual

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T4-4-4 EX355
EXCAVATOR TEST
TRAVEL PARKING BRAKE FUNCTION
CHECK
Summary:
To measure the parking brake function on a specified
slope.
Preparation:
1. The surface of the test slope shall be even with a
gradient of 20% (11.31°).
2. Mark a white line on the travel device cover.
3. Hold the bucket 0.2 to 0.3 m (8 to 12 in) above the
ground with the arm and bucket fully rolled in.
4. Maintain the hydraulic oil temperature at 50 ± 5 °C
(122 ± 9 °F).
Measurement:
1. Measure in the fast travel mode.
2. Select the following switch positions:
Travel Engine E Mode HP Mode Work Auto-Idle
Mode Control Switch Switch Mode Switch
Switch Dial Switch
Fast Fast OFF OFF General OFF
Mode Idle Purpose
Mode
3. Measure the displacement (revolution angle) of the
travel device cover until the parking brake is
applied.
3-1. Climb the slope and place the travel levers in
neutral.
3-2. Measure the displacement from the mark
position on the travel device cover when the
levers are placed in neutral to that position
when the machine stops moving.
4. Measure the travel parking brake slip amount while
parked.
4-1. Climb the slope and place the travel levers in
neutral.
4-2. Stop the engine.
4-3. After the machine stops, put alignment marks
on a track link or shoe, and the track side
frame.
4-4. After 5 minutes, measure the distance be-
tween the marks on the track link or shoe and
the track side frame.
Evaluation:
Refer to the Performance Standard Table in Group
T4-2.
SM0141
0.2 to 0.3 m
SM0142
Position where the machine
comes to a stop
Position when the travel
levers are in neutral
Displacement
(Revolution Angle)
Alignment marks on the track
side frame and shoe when the
machine comes to a stop
Displacement measured
after 5 minutes
SM0143
Mark