Bush Hog 280 manual Section V Assembly, POINT Lift Models 285

SECTION V ASSEMBLY

IMPORTANT

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

5-1 3-POINT LIFT MODELS (285 & 286)

A.Attach A-frame struts to mounting brackets using 5/8” x 2” capscrews and locknuts as shown. (Figure 5-1)

B.Place flex link and pivot tube between top of A- frame struts. Place support yokes on outside of A- frame struts. Fasten together using 5/8” x 6” cap- screw and locknut.

C.Position tailwheel bracket on rear of cutter deck as shown. (Figure 5-1) Align holes in tailwheel weld- ment with holes in support yokes and strongbacks. Fasten with 5/8” x 6” capscrew and locknut on the single tailwheel bracket.

D.Place flatwasher on wheel spindle. Install wheel on tailwheel weldment securing with roll pin.

E.Bolt adjusting bracket to cutter deck using 5/8 x 2” capscrew and locknut.

F.Place tailwheel frame into desired position and fasten with 1/2 x 1-3/4” capscrews, lockwashers and nuts.

G.Install Category I lift pins in front holes in mounting brackets and fasten with 1-1/8” fine thread nut and lockwasher.

Figure 5-1 Tailwheel Bracket

H. Attach clutch shield to gearbox as shown in exploded drawing in Figure 5-6.

I. Remove pivot bolt from spline end of clutch. Remove inspection cover from clutch shield.

J. Slide clutch onto gearbox input shaft aligning bolt hole with slot in input shaft. Fasten with pivot bolt, lockwasher and nut. Torque to 30 ft./lbs.

K. Loosen eight nuts retaining clutch springs 1/3 turn or until spring can be turned with fingers.

L. With tractor at idle speed, engage tractor

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

M. Retighten nuts to original position. If adjust- ment is necessary, refer to Section 4-6.

WARNING

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.

N.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. Replace temporary plug with vent plug supplied in operator’s manual package.

Height Adjusting Bracket

Tailwheel

Assembly

Rear Safety

Chains

Clutch Shield

Yoke

Flex Link

Driveline

Cat. I or II Hitch Pin

Front Safety Chains

15