JLG 1500SJ Service Manual - Manual (Page 421)

SECTION 5 - HYDRAULICS
3121262 – JLG Lift – 5-69
5.4 OIL SAMPLING
See Figure 5-127., Oil Sampling Port.
This machine is equipped with an oil sampling valve to
allow for verification of hydraulic oil condition.
Procedure
1. Function the machine for approximately 15 minutes
operating all functions.
2. Switch the select switch to the ground controls and
start the engine.
3. Locate the oil sampling valve on the front of the main
control valve.
4. Unscrew the knurled end which is attached to the
chain.
5. Place a drip pan under the spout and push in for
approximately 10 seconds. This should flush out the
valve.
6. Open and place the sample bottle under the spout.
7. Push in on the end of the valve and fill up the bottle.
8. Cap the bottle immediately.
9. Thread the knurled cap back onto the valve.
10. The sample is complete.
Figure 5-127. Oil Sampling Port