background image

SECTION V

ASSEMBLY

IMPORTANT

Tighten all fasteners to specifications on Torque
Chart unless otherwise indicated.

5-1 STANDARD 3-POINT HITCH (Figure 5-1)

To  attach  a  standard  duty  hitch  to  your  cutter:

Remove  the  lift  pins  and  all  bolts  from  the  hitch.
Install  the  A-frame  struts  of  the  assembly  between
the  mounting  brackets  on  the  base  frame.  Extend
the 3-point hitch yoke between the A-frame and the
brackets  at  the  rear  of  the  machine  and  bolt  into
place.  Replace  lift  pins  and  bolts  at  bottom  of  A-
frame  struts,  then  tighten  all  bolts  and  lift  pins
securely.

5-2 HEAVY DUTY 3-POINT HITCH

To attach a heavy duty hitch to your cutter:

Remove  the  bolts  from  the  hitch.  Install  the  mast
weldment  between  the  mounting  brackets  on  the
base  frame.  Extend  the  3-point  hitch  yoke  between
the top of the mast to the brackets at the rear of the
machine and bolt into place. Fasten the mast to the
deck  brackets  using  7/8  x  2-1/2”  bolts,  lockwashers
and  nuts  in  the  top  holes  and  5/8  x    2”  bolts,  lock-
washers  and  nuts  in  the  bottom  holes.  Tighten  all
bolts. Arrange the lift pins and flexible link according
to your tractor’s requirements. Refer to  Figure 2-1.

5-3  TAILWHEEL ASSEMBLY

Connect  your  cutter  to  the  tractor  and  lift  it  high

enough  for  the  caster  wheel  assembly  to  clear  the
ground.  Install  the  tailwheel  frame  as  shown.  Insert
the  caster  fork  up  through  the  pivot  tube.  Fasten  in
place  with  lock  collar  and  roll  pin.  To  adjust  to
desired  cutting  height,  bolt  end  of  adjusting  bracket
to  lugs  on  base  frame  and  fasten  other  end  to  tail-
wheel  bracket  using  the  desired  adjusting  hole.
Tighten all bolts securely.

5-4 GEARBOX INPUT SHIELD

Remove  four  existing  bolts  from  around  input

shaft in front of gearbox. Fasten metal shield bracket
to  gearbox  using  these  bolts.  Fasten  plastic  shield
(with access opening to the top) to the shield bracket
using  four  5/16  x  3/4”  bolts,  flatwashers,  lockwash-
ers and nuts.

5-5 FRONT CHAIN GUARDS (Standard) &

REAR CHAIN GUARDS (Optional)

Position  chain  assembles  against  mainframe  as
shown  and  fasten  with  1/2  x  1-1/2”  bolts,  flatwash-
ers, lockwashers and nuts. (Figure 5-1)

5-7 DRIVELINE INSTALLATION

(Slip Clutch Optional)

A.  Remove  pivot  bolt  from  spline  end  of  clutch.

Remove inspection cover from clutch shield.

B.  Slide  clutch  onto  gearbox  input  shaft  aligning

bolt holes with slot in input shaft.  Fasten with clamp
bolts, lockwashers and nuts. Torque to 30 ft./lbs.

C.  Loosen  eight  nuts  retaining  clutch  springs

1/3 turn or until spring can be turned with fingers.

D. With  tractor  at  idle  speed,  engage  tractor

PTO  drive  2-3  seconds.    Clutch  should  slip  with-
out turning blades.

E. Retighten nuts to original position. If adjust-

ment is necessary, refer to Section 4-6.

OVER-TIGHTENING  SPRING  NUTS  MAY 
CAUSE  DAMAGE  TO  IMPLEMENT  AND/OR 
TRACTOR  DUE  TO  INCORRECT  SLIP 
CLUTCH  TORQUE  SETTING.    ALWAYS 
FOLLOW  THE  PROPER  ADJUSTMENT  PRO-
CEDURE.

IMPORTANT

Before  operation,fill  gearbox  with  EP80W-90
gear oil to check plug on rear of gearbox.  Allow
time  for  oil  to  seep  through  bearings  into  lower
housing,  then  recheck  oil  level.  Insure  that  vent
hole  in  fill  plug  is  open  to  allow  pressure  to
escape from gearbox during operation. 

WARNING

15

5-6 FRONT GUARD ASSEMBLY (Optional)

Fasten  guard  to  center  front  of  mainframe

using1/2  x  1-1/2”  bolts,  flatwashers,  lockwashers
and nuts.

Figure 5-2 Front Guard

All manuals and user guides at all-guides.com

Summary of Contents for 305 Series

Page 1: ...BUSH HOG ASSEMBLY OPERATION MAINTENANCE 4 00 Operator s Manual 305 306 SERIES ROTARY CUTTERS 403 Part No 62736 All manuals and user guides at all guides com a l l g u i d e s c o m...

Page 2: ...sh Hog parts which are manufactured with the same precision and skill as our original equipment Our trained service personnel are well informed on methods required to service Bush Hog equipment and ar...

Page 3: ...l Customer and or Operator s responsibility to read the Operator s Manual to operate lubricate maintain and store the product in accordance with all instructions and safety procedures Failure of the o...

Page 4: ...arges for normal service or adjustment loss of crops or any other loss of income rental of substitute equipment expenses due to loss damage detention or delay in the delivery of equipment or parts res...

Page 5: ...een instructed on the safe and proper use of the cutter 10 Purchaser or dealer elects to delete deflectors front chains Explanation Dealer s Signature Purchaser s Signature THIS CHECKLIST TO REMAIN IN...

Page 6: ...uld cease mowing whenever anyone comes within the operating area 7 Clear the work area of objects which might be picked up and thrown 8 Use a piece of cardboard or wood rather than hands to search for...

Page 7: ...ions to Keep all guards in place when the machine is in operation Permit no riders on equipment Stop engine disconnect the power source and wait for all machine movement to stop before servicing adjus...

Page 8: ...t II and III quick hitch Standard equipment includes dri veline shields clutch shields and front discharge shields deflectors NOTE Dealer or purchaser may elect to delete front and rear discharge shie...

Page 9: ...Raise and lower cutter to determine position with shortest distance between the tractor PTO shaft and gearbox input shaft Shut down tractor leaving cutter in position of shortest distance Securely bl...

Page 10: ...ion of shield as a guide cut shaft the same amount Figure 2 6 Figure 2 6 K Repeat steps I and J to other driveline section L Deburr ends of driveline sections and clean away all chips and filings Figu...

Page 11: ...ways tilt the cutter approximately 2 inches 51mm lower in the front This tilt decreases horsepower require ments and increases potential ground speed When fine shredding is desired adjust cutter deck...

Page 12: ...in the torque specifications chart unless otherwise indicated THE CUTTER CAN FALL FROM HYDRAULIC SYSTEM FAILURE TO AVOID SERIOUS INJURY OR DEATH SECURELY SUPPORT CUTTER BEFORE WORKING UNDERNEATH BEFO...

Page 13: ...at until blade holder comes off Care should be taken not to damage blade bolt threads REPLACEMENT A Replace blade holder and tighten the lower shaft nut to 600 ft lbs If a torque wrench is not availab...

Page 14: ...to the plug located on the top of the gearbox Never fill the gear box above this level Seals could become damaged due to expansion OIL SEAL LEAKAGE The three main causes of oil seal failure are as fo...

Page 15: ...liminate ground contact Rapid Blade Wear Cutter not being operated at Reduce ground speed Bolt Hole rated RPM speed Set tractor throttle for proper PTO speed Too much ground speed Use lower gear Poor...

Page 16: ...Never put hands or any other part of body under blocked up assemblies if at all possible 9 Always wear goggles or safety glasses when hammering grinding or drilling metal parts 10 If the assembly cal...

Page 17: ...g hole Tighten all bolts securely 5 4 GEARBOX INPUT SHIELD Remove four existing bolts from around input shaft in front of gearbox Fasten metal shield bracket to gearbox using these bolts Fasten plasti...

Page 18: ...IPMENT QUICKLY IN AN EMERGENCY ALLOW NO CHILDREN OR UNQUALIFIED PERSONS TO OPERATE EQUIPMENT BE CAREFUL ON UNEVEN TERRAIN DECREASE SPEED WHEN TURNING DO NOT OPERATE MOWER IN TRANSPORT POSITION WARNING...

Page 19: ...45 1 11 16 1 1 8 12 UNF 397 538 890 1206 1444 1957 1 7 8 1 1 4 7 UNC 500 678 1120 1518 1817 2462 1 7 8 1 1 4 12 UNF 553 749 1241 1682 2013 2728 2 1 16 1 3 8 6 UNC 655 887 1470 1992 2382 3228 2 1 16 1...

Page 20: ...BUSH HOG L L C P O Box 1039 Selma AL 36702 1039 Telephone 334 874 2700 www bushhog com All manuals and user guides at all guides com...

Reviews: