Bush Hog RTN - Manual (Page 12)

SECTION IV
MAINTENANCE
4-1 MAINTENANCE CHECK LIST
Perform scheduled maintenance as outlined below.
Lower machine to ground, turn off tractor and set
parking brake before doing maintenance inspections
or work. Some checks may require raising machine
off ground and supporting with blocks. All bolts
should be torqued as recommended in TORQUE
SPECIFICATIONS, unless otherwise indicated.
BEFORE EACH USE
1. Check tractor tire air pressure. Refer to tractor
operator’s manual.
2. Check blades and rotor to be sure that no foreign
objects such as wire or steel strapping bands are
wrapped around them.
3. Check blade bolts for tightness. Tighten to
118 ft./lbs.
4. Inspect blades for wear. Replace if necessary.
5. Make certain driveline shields are in place and in
good repair.
6. Perform BEFORE EACH USE lubrication per
paragraph 4-2.
7. During operation, listen for abnormal sounds
4-2 LUBRICATION (Figure 4-1)
NOTE
The multi-purpose grease referenced in this sec-
tion is an NLGI Grade 2 type grease.
BEFORE EACH USE
1. Driveline Universal Joints - Apply multi-purpose
grease with grease gun.
2. Driveline Guard - Apply 2-3 shots of multi-
purpose grease with grease gun to plastic fitting.
3. Driveline - Disconnect PTO driveline, pull the two
sections apart, apply thin coat of multi-purpose
grease to inside of outer (female) section.
Reassemble sections and install. Pull each sec
tion to be sure driveline and shields are securely
connected. Make certain PTO shielding is in
good condition.
4. Input Gearbox - Add EP80W-90 gear oil, if
necessary, to bring oil level to check plug.
5. Lateral Gearbox - RTH Models (Gear Drive) - Add
EP80W-90 gear oil, if necessary, to bring oil level
to check plug located on side of gearbox.
6. Chain Drive - RTN,RTNR Models - Add EP80W-90
gearoil, if necessary, to bring oil level to check
plug located on side of cover.
40 HOURS
7. Rotor Shaft Bearing - Apply 2-3 shots of multi-
purpose grease with hand pump grease gun
every 40 hrs. of operation and before storage.
(Figure 4-2)
Figure 4-1
Lubrication
(1) Before Each Use
(2) Before Each Use
(3) Before Each Use
To remove yoke shield,
depress the three tabs
with a screwdriver and
slide cover back.
(7) 40 Hours
RTH Gear Drive Oil
Filler Plug
(5) Before Each Use
RTH Check Plug
10
RTN Oil Check Plug
RTN Chain Drive
Oil Filler Plug
(6) Before Each Use
Check Plug
(4) 4Before Each Use
THE TILLER CAN FALL FROM HYDRAULIC
SYSTEM FAILURE. TO AVOID SERIOUS
INJURY OR DEATH, SECURELY SUPPORT
TILLER BEFORE WORKING UNDERNEATH.
WARNING
which might indicate loose parts, damaged bear-
ings, or other damage.
AFTER EACH USE
1. Clean all debris from machine especially underside.
2. Store in dry place.