Bush Hog 665H, 965H, 865H, 765H manual Tightening Nuts and Bolts, Lubrication, Tooth Replacement

Tooth Replacement

The bucket tooth points are self-sharpening and will require little attention; however, these points on the bucket shanks can be replaced when they become badly worn or broken. If a tooth shank breaks off, becomes damaged or lost so that it cannot hold a tooth point, a new shank should be welded to the bucket in its place.

Weld-On tooth points can be removed from the welded tooth shank by hammering at “A” (Figure 5) on the tooth point or by driving a chisel at “B”, just between the tooth point box section and the tooth shank. Install the new point and anchor it to the shank by peening at the location shown.

Bolt-Ontooth points, when worn, can be replaced by removing the hardware that connects it to the cutting lip. Install new tooth and replace hardware if necessary.

Roll-Pinnedtooth points, when worn, can be replaced by driving out the roll pin with a hammer and punch. Install the new tooth using a new roll pin and hammer.

Tightening Nuts and Bolts

Periodically, check to be sure all bolts and nuts are tight. See torque chart, page 28 .

Check all pivot pins for cotter pins, washers and retainers; if missing, replace.

Lubrication

IMPORTANT: Avoid excessive greasing. Dirt collects on exposed grrease and increases wear greatly. After greasing, wipe off excessive grease from fittings.

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Figure 6 - Lubrication Points for Model 665H

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Figure 7 - Lubrication Points for Model 765H

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Figure 8 - Lubrication Points for Model 865H

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Figure 8A - Lubrication Points for Model 965H

**On Model 965H the Upper and Lower Swing Frame Pivot Bearings located in the Mainframe should be replaced every 300 to 400 operating hours.

Economical and efficient operation of the backhoe is dependent upon regular and proper lubrication of all moving parts with a quality lubricant.

All parts provided with grease fittings should be lubri- cated with a good quality chassis lube type grease. If any grease fittings are missing, replace them immedi- ately. Clean all fittings thoroughly before using grease gun.

Lubricate all grease fittings at least twice daily, once at the beginning of operation and again approximate- ly halfway through the work day.

Lower stabilizers to the ground, extend dipperstick and bucket and lower boom so bucket rests on the ground as shown in Figures 6, 7, 8 and 8A. Refer to these illustrations for the location of all grease fittings.

*IMPORTANT: Before greasing boom to swing frame pivot (*) shown in Figures 6, 7, 8 & 8A, raise boom and install transport lock pin shown in Figure 1.

On Models 665H, 765H, 865H and 965H the follow- ing locations should be oiled with SAE30 oil:

A. Stabilizer Pivot Pins

B. Control Handle Linkage

C. Seat Bracket Pivot

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