Bush Hog RDTH 84 manual Front, Belt Adjustment, Blade Replacement, Belt Replacement

line and shields are securely connected. Make cer- tain PTO shielding is in good condition.

40 HOURS

7.Spindle Assemblies - Apply 5 shots multi-pur- pose grease with grease gun. Grease fittings for spindles can be accessed through holes in the shields.

4-3 BELT ADJUSTMENT

Belt tension should be checked every 40 hours to get maximum life from drive belt and best perfor- mance from cutter. Belt tension is adjusted by increasing or decreasing the length of the spring on the moveable idler. For proper belt tension the spring length should be set at 2-7/8”. (Figure 4-2).

4-5 BLADE REPLACEMENT

CAUTION

WEAR HEAVY WORK GLOVES TO PRO-

TECT HANDS FROM SHARP EDGES.

A. Raise cutter using tractor hydraulics and

SECURELY BLOCK INTO POSITION.

B. Set parking brake, turn off tractor and remove key. C. Remove center bolt securing blade and blade

bar to spindle. Blade and bar will come off as a unit. Blade bar can then be removed from the blade.

D. Install new blade(s) as shown in Figure 4-3. Be sure that blades are installed with offset in proper direction. Tighten retaining bolts to 65 ft./lbs.

To adjust the spring length, loosen or tighten the 1/2” hex nuts on the spring adjustment rod until the cor- rect spring length is reached.Use only genuine Bush Hog replacement parts.

4-4 BELT REPLACEMENT

A. Remove right and left side shields.

B. Relieve spring tension by loosening the two 1/2” hex nuts on the spring adjustment rod.

C. Remove old belt.

D. Install new belt, referring to Figure 4-2. Be sure that the belt is properly positioned in all sheave grooves.

E. Adjust tension on the belt by adjusting the length of the spring on the moveable idler. The cor- rect spring length is 2-7/8”.

F. Replace right and left side shields.

Figure 4-2 Belt Installation Diagram

Figure 4-3

Spindle Assy.

Bearing Washer

Locknut

Blade Bar

1/2 x 1-3/4” Capscrew

29” Blade

Safety Washer

1/2 x 1-1/2 UNF G8 Capscrew

FRONT

2-7/8”

Spring Idler

1/2” Hex Nuts

12