5-28 Published 4-09-2021, Control # 364-11
MAINTENANCE AND LUBRICATION RT765E-2 OPERATOR MANUAL
Item
Lube Point
Description
Figure No.
Approved
Lubricant
Lube
Capacity
Lube Interval Application
Hydraulic
100 Hydraulic Tank Figure 5-11
HYDO
Hydraulic Oil
6829006444
150 gal
(568 l)
Check fluid level every
10 hours or daily.
• Use sight gauge
on side of tank,
with boom down
and all outrigger
cylinders
retracted.
• Drain and refill as
necessary
NOTE:
• Environmental and other conditions can dramatically affect the condition of hydraulic oil and filters. Therefore,
specific intervals for servicing/changing hydraulic oil, filters and hydraulic tank breathers cannot be set.
However, it is imperative for the continued satisfactory performance of Grove cranes that inspections be
performed on the basis of how and where each crane is used. Air borne and ingested contaminants can
significantly reduce the life of oil and the condition of hydraulic oil filters and tank breathers.
• Under normal operating conditions, it is recommended that hydraulic oil, filters and breathers be inspected
and oils sampled at least every 3 to 6 months and more frequently for severe operating conditions. The
inspections should be for air borne and/or ingested particles and water that deteriorate and contaminate the oil
(e.g., 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 contaminants content may be high. If the indicator
reaches the red zone or indicates a by-pass condition, the hydraulic oil must be sampled. The hydraulic tank
breather should also be inspected to assure that it is not restricting air flow into and out of the reservoir.
• To inspect hydraulic oil, fill a small glass container with a sample of reservoir oil and another glass container
with fresh oil. Let the samples stand, undisturbed, for one to two hours and then compare the samples. If the
reservoir oil is heavily contaminated with water the sample will appear "milky" with only a small layer of
transparent oil on top. If the "milky” appearance was due to air foaming, it will dissipate and the oil should
closely match the fresh oil. Should you have any questions, please contact your local authorized Grove
distibutor.
• The hydraulic oil shall meet of exceed ISO 4406 class 17/14 cleanliness level.
• Refill volumes could possibly exceed tank capacity due to oil draining from the lines.
101 Hydraulic Filter Figure 5-11
HYDO
Hydraulic Oil
6829006444
---
Change filter when the
indicator is red
---
102
Diesel
Particulate Filter
Figure 5-12
--- ---
See Engine Owner’s
Manual
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