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Clean Pilot Oil Filter (Brake Circuit)
--- every 2000 hours
Replace
d
WARNING: Hydraulic oil becomes hot and pressurized
during operation. Severe burns may result if
skin comes in contact with escaping hydraulic oil
immediately after operation. Wait for the oil to cool
before starting any maintenance work.
1. Park the machine following the same procedures as
described on page 7-8 for preparation of inspection/
maintenance work.
2. Install articulation lock bar to the front and rear of the
frame by following the procedures described on page
7-10.
3. Before replacing the filter element, be sure to relieve the
air pressure from the hydraulic oil tank by pressing air
bleed valve (1).
4. Place a suitable container under the filter.
5. Disconnect hoses and remove adapter (7). Remove
adapter (9) including washer (10) and filter (11) inside.
MAINTENANCE
7-54
7
8
9
7
8
9
Oil Flow
90Z7-7-37
90Z7B-7-50-2
90Z7B-7-50-3
10
11
Air Flow
90Z7B-7-51-1
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