JLG G9-43A (9151-4003) Operator Manual - Manual (Page 49)

Form No. 20127 • G9-43A Owner/Operator Manual
1. Operate unit until hydraulic oil reaches normal operating temperature.
2. Apply parking brake, lower boom to rest and shift Forward/Reverse lever to
“Neutral” Observe Hydraulic Filter Bypass Indicator with engine running at
full throttle. Replace filter elements if necessary.
3. Obtain a container to receive waste oil and a CLEAN container to receive oil
sample.
4. With gauge removed from hose, attach mini-check and hose to test port
located above implement pump (see diagram below). Hose end must be
positioned in waste oil container.
5. Allow at least one pint of oil to flow into waste oil container to eliminate any
contamination from hose.
6. Move hose to CLEAN container to collect sample for analysis.
7. Return hose to waste oil container and disconnect adapter from mini-check
test port.
8. Cover sample container immediately with CLEAN cap.
9. Stop engine and check oil level in reservoir and replenish as required. For
ease of filling reservoir, use a funnel with a hose or flexible tube for best
results.
10. Contact your GRADALL Distributor for information concerning oil analysis.
Oil sample containers are available from several sources:
• Oil companies
• Oil suppliers
• Sampling labs
Figure 14-1
OBTAINING HYDRAULIC OIL SAMPLE
14.0
NOTE!
OIL CLEANLINESS IS CRITICAL
The filtration system is designed
to maintain a minimum ISO
cleanliness level of 18/15.
TAKE HYDRAULIC
SAMPLE FROM
THIS PORT