Owner / Operator Manual S-9604 Model Brush Shredder

Maintenance

Safety When Working Under Shredder Deck

Never work under the shredder deck until:

• the unit is sufficiently braced and supported

• the tractor engine is off, brake is set, and key is removed

• PTO has been disengaged

• driveline is disconnected

• rear tractor tires have been secured with tire chocks

• the shredder is cooled

Warning! Failure to follow these safety guidelines can result in serious injury or death.

Initial Maintenance

Warning! These maintenance practices must be followed for the first eight hours of operation; the practices must also be performed for the first eight hours following the removal/replacement of any of the components named in this section. Check daily thereafter.

1. Tighten the bridge clamp bolts holding the slip clutch to the input shaft of the gearbox.

Caution! Failure to tighten the bridge clamp bolts will shorten the life of the slip clutch hub.

2. Check for debris deposited between the blade bar and the blades. Debris found jamming or locking the blades must be removed to insure that the blade may pivot freely on the blade bolt.

Warning! Failure to maintain freely pivoting blades will cause severe vibration or blade breakage which can result in injury or death.

3. Tighten blade bolts and blade bar nut.

Warning! Failure to tighten blade bolts and blade bar nuts can cause blade bolts, blades, or output shafts to break, which can result in injury or death.

4. Check for debris deposited around the output shaft or tailwheel axle.

5. Tighten gearbox mounting bolts.

Caution! Failure to keep the gearbox bolts tightened can cause the blades to strike the bottom of the shredder deck or break the output shaft of the gearbox.

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Maintenance

Daily Maintenance

1. Repeat all steps listed under the “Initial Maintenance” section on a daily basis after the initial maintenance has been performed.

2. Lubricate the driveshaft tubes and U-joint.

3. Lubricate the tailwheel hub.

4. Check and maintain the proper amount of lubricant in the gearboxes (see page 23). The recommended

lubricant for the gear box is Unocal 85-140 gear oil or equivalent.

5. Check the blades; sharpen or replace as necessary. When sharpening blades, only sharpen the

beveled edge. Also, be certain that paired blades weigh within 1/2 oz. of each other. When replacing blades, replace both blades of the pair.

Warning! If the blades must be sharpened, follow the proper safety procedures listed on page 21 of this manual for working under the shredder deck.

Tightening Blade Bolts

Before starting a new shredder, or after blades have been removed for any reason, tighten blade bolts using the following procedures. Repeat hourly inspections each time the blades are removed/

replaced.

Warning! Follow safety guidelines listed on page 21 of this manual when working under shredder deck. Do not rely on the tractor’s lift arms to support the shredder while performing maintenance.

1. Disengage PTO; be certain that all rotation has stopped.

2. Lift shredder high enough to place suitable supports under the shredder deck.

3. Turn tractor engine off; remove key; lock transmission and brakes; chock rear wheels.

4. Disconnect driveline.

5. Use a pipe wrench to hold the blade bolt; torque blade bolt nut to approximately 900 to 1500 ft./lbs.

A special blade bolt wrench listed on page 37 may be purchased from your local Brown dealer.

Warning! Failure to keep blade bolts tight can and will cause: blade breakage; warping of blade bar; ejection of blade from blade bar. These hazards can cause serious injury or death.

Warning! If blade bolts are allowed to run loose, the obvious danger is for the bolt to come completely loose, allowing the blade, bolt, and nut to be ejected from the cutter.

Maintenance

Tightening Blade Bolts (continued)

Danger! When the bolt is not sufficiently tight, the blade is allowed excess vertical movement when it strikes an object. This situation will cause the blade to break from fatigue and to be ejected from the cutter. While this situation is occurring, the loose blade bolt is also hammering the underside of the blade carrier; the shoulder of the blade bolt beats an indention around the blade bolt hole into which the bolt shoulder will fit. When this damage occurs, the blade bolt will pull up into the indention when the bolt is tightened, causing the blade to jam so that it can no longer pivot on the blade bolt. A blade carrier damaged in this manner must be taken out of service immediately. Replace the blade carrier

(contact Brown Mfg. Corp. for instructions) and replace the blades and blade bolts before returning the machine to service. Figure 23-1 shows damage caused by loose blade bolts.

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Figure 23-1.

Danger! The described occurrences will cause the blades to break and be ejected. An ejected blade can and will cause serious injury or death.

REMEMBER: Blades must pivot freely and blade bolts must be tight!

Blade Timing

The blade carriers must be correctly timed such that the blades do not contact between the blade carriers.

Timing is adjusted by disconnecting the spider couplers between each gearbox, rotating the blade carriers into correct timing, and reconnecting the spider couplers. When one set of blades points from the left to the right, the other set of blades should point from the front to the rear.

Warning! Operation of the shredder with incorrectly timed blades will cause blades to strike against each other. This can cause serious property damage and/or serious personal injury or death.

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Maintenance

Checking & Adding Gearbox Oil

Check all gearbox oil levels regularly and add oil as needed.

Center “T” Gearbox

1. Remove both the vent plug and the lower oil level check plug from the side of the gearbox.

2. Check that the oil level is at the lower check port.

3. If the oil level is below the lower check port, then follow these steps to add oil:

a) Add Unocol 85-140 gear oil or equivalent

through vent port.

b) Continue to fill until oil level reaches lower

check port.

4. Replace and tighten port plugs.

Outboard Gearboxes

1. Remove the vent plug/dipstick from the top of the gearbox.

2. Check that the oil level is at the full mark (the only marking on the dipstick).

3. If the oil level is below the full mark, add Unocol 85-140 gear oil through the vent plug port (a small necked funnel will be needed).

4. Replace and tighten vent plug/dipstick.

Sharpening Blades

The blades are cut from Ultra-KOR alloy, a space-age material. Do not use a grinder to sharpen

blades! Instead, sharpen blades with a cutting torch, restoring proper edge bevel. Finish the edge carefully with a side grinder, taking care not to super-heat the blade material.

Caution! Sharpening blades with grinder or super-heating blade with side grinder will decrease the life of the blades. Contact Brown Manufacturing Corporation for additional information.

Maintenance

Adjusting the Torque Setting on the Slip Clutch

The external metal band (10) is used as a reference for the correct compression of the springs. The bolts should be tightened until the spring barely touches the circular metal band. The torque setting of the clutch will not be to specifications if the band makes contact or is deformed due to excessive tightening of the bolts. We recommend tightening the bolts in a crossing pattern as in Figure 1. below.

1.

5.

8.

4.

3.

Figure 1.

7.

2.

6.

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Maintenance

Maintenance/Repair Log

Please record all maintenance and repair services performed on the shredder. This log may help identify reoccurring problems with your shredder and may be requested by the manufacturer when making warranty claims.

Date Function

Initial Maintenance

Part(s) Involved

slip clutch, gearbox, blades, blade bolts, blade bar nut, tailwheel

Initials

Maintenance

Maintenance/Repair Log (continued)

Date Function Part(s) Involved Initials

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Maintenance

Maintenance/Repair Log (continued)

Date Function Part(s) Involved Initials

Maintenance

Maintenance/Repair Log (continued)

Date Function Part(s) Involved Initials

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