Tennant 285, Руководство оператора

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MAINTENANCE
3-9
285 MM191 (12---89)
HYDRAULICS
HYDRAULIC FLUID
Hydraulic fluid drives most of the moving
components of the machine. The quality and
condition of the hydraulic fluid play a very important
role in how well the machine operates. Tennant
Company has developed its own hydraulic fluid to
meet the special needs of its machines.
TENNANT
r
Hydraulic Fluid is a specially
compounded oil with the following features not found
in many hydraulic fluids:
1. Flat viscosity curve.
2. Additives to prevent corrosion.
3. Additives to prevent oxidation.
4. Rust inhibitors.
5. Foam suppressors.
These features restrict foaming of the hydraulic fluid
and provide a high standard of lubrication to the
components.
TENNANT
r
HYDRAULIC FLUID
VISCOSITY SPECIFICATIONS
TENNANT r Hyd. Fluid TENNANT r Hyd. Fluid
No. 32397 (HP1040) No. 32398 (HP2060)
SUS @ 100 _ F (38 _ C) 404--- 445 940--- 1010
SUS @ 210 _ F (99 _ C) 78--- 84 122--- 130
TENNANT
r
Hydraulic Fluids have a very flat viscosity
curve (synonymous with “high viscosity index”). The
flat viscosity curve means that the thickness of the
fluid is very constant over wide temperature ranges.
Hydraulic fluid with the viscosity rating of HP1040
should be used in machines that are operated in
areas which have ambient temperatures up to
90
_
F (32
_
C). Use the HP2060 rated hydraulic fluid
in areas which have ambient temperatures above
90
_
F (32
_
C).
ATTENTION! If a locally--available hydraulic fluid
is preferred, or if products of only one oil
company are used, the hydraulic fluid used must
match closely the viscosity specifications given in
the chart for TENNANT
r
Hydraulic Fluid, as well
as the other features described. Do not substitute
automatic transmission fluid for hydraulic fluid.
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. The reservoir holds 5 gal (19 L) of hydraulic
fluid. The reservoir is located behind the operator
seat.
A breather-filler cap and fluid level dipstick is
mounted on top of the reservoir. The breather
relieves excess pressure in the reservoir. The
breather is mounted on top of the hydraulic fluid
reservoir and seat support. The breather should be
replaced after every 800 hours of operation.
A
B
02458
RESERVOIR BREATHER-FILLER CAP
A. Breather-Filler Cap
B. Seat Support
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. The hopper must be
lowered when checking reservoir fluid level.