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3-5 STORAGE
A. Apply light coat of multi-purpose grease to slid-
ing assemblies.
B. Perform steps “A” through “G” in paragraph 3-4.
C. Relieve hydraulic pressure by shifting imple-
ment control valve levers back and forth.
D. Disconnect implement hydraulic lines connect-
ed to tractor. Make certain tractor auxiliary valves
neutral position before disconnecting lines.
E. Remove valve kit from tractor (if used).
F. Disconnect implement from 3-point hitch and
driveline from PTO shaft.
G. Clean debris from cutter deck to prevent corro-
sion.
H. Oil all pivot points and cable sheaves.
I. Wearing gloves and using an oil soaked rag,
wipe down all hoses and cables.
SECTION IV
MAINTENANCE
4-1 MAINTENANCE CHECK LIST
Perform scheduled maintenance as outlined in Table
4-1. Secure machine as outlined in paragraph 3-3
before doing maintenance inspections or work. All
bolts should be torqued as recommended in Table 4-
2 unless otherwise indicated.
Table 4-1 Maintenance Check List
1. Check hydraulic oil level in tank. Add as neces-
sary to bring oil level to bottom of strainer. (See
paragraph 4-2 for more details.)
2. Inspect hydraulic lines and fittings for wear or
leaks. Replace only with genuine Bush Hog replace-
ment parts.
WEAR EYE PROTECTION AND USE A
PIECE OF CARDBOARD OR WOOD
RATHER THAN HANDS TO SEARCH FOR
HYDRAULIC LEAKS. ESCAPING
HYDRAULIC OIL UNDER PRESSURE CAN
PENETRATE THE SKIN. IF FLUID IS
INJECTED INTO THE SKIN IT MUST BE
SURGICALLY REMOVED BY A DOCTOR
FAMILIAR WITH THIS FORM OF INJURY OR
GANGRENE MAY RESULT.
3. Check tractor tire air pressure. It is critical for
stability that tractor tires carry proper air pres-
sure. Refer to tractor operator’s manual.
4. Check blades and spindle to be sure that no
foreign objects such as wire or steel strapping
bands are wrapped around them.
5. Check blade bolts for tightness. Tighten to 450
ft./lbs. (609.7 Nm)
6. Clean all debris from machine, especially under-
side of deck.
7. Check that cables are tight. Tighten per para-
graph 4-7.
8. Inspect blades for wear. Replace if necessary
per paragraph 4-6. Always replace both blades
with a match pair. Use only genuine Bush Hog
replacement parts.
9. Make certain chains and/or side bands are in
good repair to minimize potential thrown debris or
objects from cutter.
10.During operation, listen for abnormal sounds
which might indicate loose parts, damaged bear-
ings or other damage.
11.Perform BEFORE EACH USE lubrication per
paragraph 4-2.
4-2 LUBRICATION (Refer to Fig. 4-1)
BEFORE EACH USE
1. Hydraulic Tank - Check hydraulic oil level. Fill as
necessary to bring oil level to bottom of filler
strainer or to side fill plug. Filter oil to 10 microns
before adding. See paragraph 4-3 for recom-
mended hydraulic oils.
2. PTO Driveline Universal Joints - Apply multi-
purpose grease, with grease gun.
3. PTO Driveline Guard - Apply 2-3 shots of multi-
purpose grease, with a grease gun, to plastic
fitting. (1 fitting each end)
EVERY 40 HOURS
1. PTO Driveline - Disconnect PTO driveline,
separate the two sections, wipe inner (male)
section clean, and apply multi-purpose grease to
inside of outer (female) driveline section.
Reassemble and install. Pull on each driveline
section to make sure yokes lock into place.
2. Slide Assemblies - Wearing gloves, clean sliding
surfaces of dirt and grease. Apply thin coat of
graphite based lubricant (preferred) or multi-
purpose grease.
3. Spindle Assembly - With cutter deck in horizontal
position, remove check plug at top of housing
and check oil level. Add EP80W-90 gear oil as
necessary to fill to check plug.
11
WARNING