MAINTENANCE AND LUBRICATION GRT9165 OPERATOR MANUAL
6-48 Published 7-23-2020, Control # 668-02
Item
Lube Point
Description
Figure No.
Approved
Lubricant
Lube
Capacity
Lube Interval Application
Hydraulics Lubrication
68
Hydraulic Tank
SIGHT GLASS
Figure 6-24 J
729 L
(
192.6 gal)
Every 10 hours of
service, or daily,
whichever interval
comes first
CHECK oil level
FILL hydraulic tank to
LEVEL in SIGHT
GLASS
See NOTE 58.
See NOTE 61.
69
Hydraulic Tank
BREATHER
PERFORM SERVICE
INSPECTION every
3 to 6 months
PERFORM SERVICE
INSPECTION of oil,
filters, and breathers
See NOTE 59.
See NOTE 60.
See NOTE 61.
SAMPLE hydraulic oil
every 3 to 6 months
SAMPLE hydraulic oil
70 Hydraulic Filter Figure 6-24 — —
REPLACE hydraulic
filter when restriction
indicator gauge on the
filter head shows red
REPLACE hydraulic
filter element
See NOTE 59.
See NOTE 61.
NOTE 58: Check Hydraulic oil level using sight glass on tank with boom fully retracted and lowered, and all outrigger
cylinders retracted.
NOTE 59: REPLACE hydraulic filters at first 50-hours of service and repeat after another 50-hours, for a total of
100 hours of service, thereafter, at normal intervals. Hydraulic oil MUST BE at operating temperature at
hydraulic filter and tank inspection and service.
NOTE 60: Hydraulic oil should be drained at a temperature of 65°C to 90°C (150°F to 200°F).
NOTE 61: Hydraulic oil SHALL MEET or EXCEED ISO 4406 class 17/14 cleanliness level (reference SAE J1165).
• Working in harsh environmental conditions can dramatically affect the performance and condition of hydraulic
oil, filters, and breathers. Therefore, specific intervals for servicing/changing hydraulic oil, filters, and
hydraulic tank breathers cannot be set. Thus, it is imperative for the continued satisfactory performance of
Grove cranes, that service inspections be performed on the basis of how and where each crane is used.
Airborne and ingested contaminants can significantly reduce the life of oil, and condition of hydraulic oil filters
and tank breathers.
• Under normal operating conditions, Grove recommends that hydraulic oil, filters, and breathers be
serviced, and hydraulic oil sampled at least every 3 to 6 months. Service inspections should be for airborne
or ingested particles and water that deteriorates and contaminates the hydraulic oil. Contaminated hydraulic
oil appears “milky” or no longer has a transparent clear to amber color. The return filter by-pass indicator
should be observed daily to determine if the contaminant content is high. If the filter by-pass indicator reaches
the red zone or indicates a by-pass condition, the hydraulic oil must be sampled. Perform service to make
sure that the hydraulic oil tank breather does not restrict air flow IN, or air flow OUT of the reservoir.
• FILL procedure for Hydraulic Tank operation below -9°C (+15°F):
a. DRAIN existing oil.
b. FILL tank with oil per 6829101559 and cycle all cylinders.
c. DRAIN oil.
d. FILL tank with oil per 6829101559.
• See also your GRT9165 Service Manual for further details on Hydraulic Oil Sampling Test. Should you have
any questions, please contact your local authorized Grove distributor.
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