Tennant 1550, Manual

Page: 55 / 628

MAINTENANCE
3--9
1550 Gas/LPG/Diesel MM283 (12--2013)
HYDRAULICS
HYDRAULIC FLUID
The quality and condition of the hydraulic fluid
plays a very important role in how well the
machine operates. TENNANT’s hydraulic fluid is
designed to meet the special needs of its
machines.
TENNANT’s hydraulic fluids provide longer life of
the hydraulic components. There are three fluids
available for three different temperature ranges:
Tennant True premium
hydraulic fluid (Extended Life)
Part
number
Ambient
temperature
ISO
Grade
Ca-
pacity
1057710 19
_
C (65
_
F) or
higher
100 3.8 L
(1 gal)
1057711 19
_
C (65
_
F) or
higher
100 19 L
(5 gal)
1069019 7 to 43
_
C
(45 to 110
_
F)
68 3.8 L
(1 gal)
1069020 7 to 43
_
C
(45 to 110
_
F)
68 19 L
(5 gal)
1057707 16
_
C (60
_
F) or
lower
32 3.8 L
(1 gal)
1057708 16
_
C (60
_
F) or
lower
32 19 L
(5 gal)
The higher temperature fluid is designed with a
higher viscosity and should not be used at the
lower temperatures. Possible damage to the
hydraulic pumps may occur because of improper
lubrication.
The lower temperature fluid is a thinner fluid
designed for colder temperatures.
If a locally-available hydraulic fluid is preferred, or
if products of only one oil company are used,
contact TENNANT Technical Customer Service to
check the specifications of the substitute fluid.
Using substitute fluids can cause premature
failure of hydraulic components.
ATTENTION! Hydraulic components
depend on system hydraulic fluid for
internal lubrication. If dirt or other
contaminants are allowed to enter the
hydraulic system, malfunctions,
accelerated wear, and damage will
result.
HYDRAULIC FLUID RESERVOIR
Hydraulic fluid is stored in the hydraulic fluid
reservoir. For Gas/LPG (machines below serial
number 001508) the reservoir holds up to 11.5 gal
(44 L) of hydraulic fluid. For Gas/LPG (machines
serial number 001508 and above) the reservoir
holds up to 14.2 gal (54 L) of hydraulic fluid. For
Diesel (machines serial number 001000 and
above) the reservoir holds up to 11.5 gal (44 L) of
hydraulic fluid.The reservoir is located in the front
left corner of the machine.
The reservoir is equipped with a breather-filler cap
and fluid level dipstick mounted on the filler neck.
See Hydraulic Fluid Reservoir Breather for
breather service information.
A
B
02354
HYDRAULIC FLUID RESERVOIR
BREATHER-FILLER CAP
A. Filler Neck
B. Breather-Filler Cap
The hydraulic fluid level dipstick is built into the
breather-filler cap. The end of the dipstick is
marked with “full” and “add” levels. This indicates
the level of hydraulic fluid in the reservoir.