Bush Hog RDTH 84 User Manual

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SECTION IV
MAINTENANCE
4-1 MAINTENANCE CHECK LIST
Perform  scheduled  maintenance  as  outlined  below.
Lower implement 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  indicated  in  torque  chart
unless otherwise indicated.
WARNING
THE  CUTTER  CAN  FALL  FROM
HYDRAULIC  SYSTEM  FAILURE.  TO
AVOID  SERIOUS  INJURY  OR  DEATH,
SECURELY  SUPPORT  CUTTER  BEFORE
WORKING UNDERNEATH.
BEFORE EACH USE.
1. Check tractor tire air pressure. Refer to 
tractor operator’s manual. If mower is equipped with
pneumatic tires, tire pressure should be 40 psi.
2. Check blades and spindles 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
blade bolts to 65 ft./lbs.
4.  Inspect  blades  for  wear.  Replace  if  necessary
per  paragraph  4-5.  Use  only  genuine  Bush  Hog
replacement  parts.  If  it  is  necessary  to  sharpen  the
blades,  remove  the  blades  from  the  spindles  before
sharpening.  DO  NOT  sharpen  blades  while  still
attached to mower.
5.  Make  certain  all  shields  are  in  place  and  in
good  condition.  Repair  or  replace  any  missing  or
damaged shields.
6.  Inspect  wheel(s)  for  wear,  damage  or  foreign
objects. Repair or replace if necessary.
7.  Perform  BEFORE  EACH  USE  lubrication  per
paragraph 4-2.
8.During  operation,  listen  for  abnormal  sounds
which might indicate loose parts, damaged bearings,
or other damage. Correct any deficiency before con-
tinuing operation.
AFTER EACH USE
1. Clean all debris from machine especially under-
side  of  deck,  underneath  belt  shield  and  off  safety
decals. Replace any missing or illegible decals.
2.  Inspect  cutter  for  worn  or  damaged  compo-
nents.  Repair  or  replace  before  next  use.  Any
replacement components installed during repair shall
include the components’ current safety decals speci-
fied by the manufacturer to be affixed to the compo-
nent.
3. Store cutter in a dry place.
40 HOURS
1.  Check  belts  for  proper  tension.  Refer  to  para-
graph 4-3.
4-2 LUBRICATION
(Figures 4-1A,  & B)
BEFORE EACH USE
1. Driveline Universal Joints - Apply multi-purpose
grease with grease gun.
2.  Driveline  Guard  -  Apply  2-3  shots  of  multi-pur-
pose grease with grease gun to plastic fitting.
3.  Wheels  -  Apply  multi-purpose  grease  wiith
grease  gun.
4. Caster Pivot - Apply multi-purpose grease with
grease gun.
5. Input Gearbox - Add EP80W-90 gear oil, if nec-
essary, to bring oil level to check plug. Allow time for
the  oil  to  seep  through  the  top  bearing  to  the
bottom bearing before checking the oil level.
20 HOURS
6.  Driveline  -  Disconnect  PTO  driveline,  pull  the
two sections apart, thoroughly clean old grease from
tubes and apply thin coat of multi-purpose grease to
outside  of  inner  (male)  section.  Reassemble  sec-
tions  and  install.  Pull  each  section  to  be  sure  drive-
NOTE
The  multi-purpose  grease  referenced  in  this
secftion is an NLGI Grade 2 type grease.
Figure 4-1B
(5) 20 Hours
(2) Before Each Use
(1) Before Each Use
11
Figure 4-1A
(5) Before Each Use
(4) Before Each Use
(7) 40 Hours
Before Each Use
(3)