Hydraulic Oil - JLG 642 Operation & Safety Manual

Section 7—Lubrication and Maintenance

Hydraulic Oil

A. Hydraulic Oil Level Check
1. Be sure all cylinders are fully retracted, outriggers (if equipped) are fully raised and
machine is level.
2. Perform "Shut-Down Procedure" on page 4-5.
3. Allow hydraulic oil to cool. Check fluid level at sight gauge (4). Oil level should be
visible in gauge window.
4. Remove fill cap (5). Add fluid to bring oil up to the center of the sight gauge.
5. Replace hydraulic oil fill cap.
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