MAINTENANCE
7400 (GM) 330970 (12--03)
56
HYDRAULIC FLUID
The quality and condition of the hydraulic fluid
play a very important role in how well the machine
operates. Tennant hydraulic fluid is specially
selected to meet the needs of Tennant machines.
Tennant hydraulic fluids provide a longer life for
the hydraulic components. There are two fluids
available for different temperature ranges:
Tennant part no.
Ambient Temperature
65869
above 7
_
C (45
_
F)
65870
below 7
_
C (45
_
F)
The higher temperature fluid has a higher
viscosity and should not be used at the lower
temperatures. Damage to the hydraulic pumps
may occur because of improper lubrication.
The lower temperature fluid is a thinner fluid for
colder temperatures.
If a locally-available hydraulic fluid is used, make
sure the specifications match Tennant hydraulic
fluid specifications. Using substitute fluids can
cause premature failure of hydraulic components.
ATTENTION! Hydraulic components
depend on system hydraulic fluid for
internal lubrication. Malfunctions,
accelerated wear, and damage will result
if dirt or other contaminants enter the
hydraulic system.
HYDRAULIC HOSES
Check the hydraulic hoses every 800 hours of
operation for wear or damage.
Fluid escaping at high pressure from a very small
hole can be almost invisible, and can cause
serious injuries.
See a doctor at once if injury results from
escaping hydraulic fluid. Serious infection or
reaction can develop if proper medical treatment
is not given immediately.
FOR SAFETY: When servicing machine,
use cardboard to locate leaking
hydraulic fluid under pressure.
If you discover a fluid leak, contact your
mechanic/supervisor.
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