Graco 3A0102C User Manual

Repair

™

GrindLazer

Patents Pending

- Designed to grind flat, horizontal concrete or asphalt surfaces -

- For removal of materials from concrete and asphalt surfaces -

- Professional outdoor use only -

Model 571002 - Forward cut

GrindLazer 270 (270 cc / 9 hp)

Model 571003 - Forward cut

GrindLazer 390 (390 cc / 13 hp)

Model 571004 - Reverse up-cut (Must be used with LineDriver

GrindLazer 480 (480 cc / 16 hp)

IMPORTANT SAFETY INSTRUCTIONS

Read all warnings and instructions in this manual. Save these instructions.

3A0102C

™

)

Related Manuals:

Operation - 3A0101 Parts - 3A0103

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GrindLazer 270 and 390

(Drums, cutters, and LineDriver

GrindLazer 480

™

sold separately)

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Table of Contents

Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Component Identification . . . . . . . . . . . . . . . . . . . . 5

Drum Replacement . . . . . . . . . . . . . . . . . . . . . . . . . 6

Cutter Replacement . . . . . . . . . . . . . . . . . . . . . . . . . 7

Belt Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Clutch Replacement . . . . . . . . . . . . . . . . . . . . . . . 11

Pulley Replacement . . . . . . . . . . . . . . . . . . . . . . . . 12

Brush Replacement . . . . . . . . . . . . . . . . . . . . . . . . 13

Drive Bearing Assembly Replacement . . . . . . . . 14

Door Bearing Assembly Removal . . . . . . . . . . . 14

Door Bearing Assembly Installation . . . . . . . . . 14

Drive Bearing Assembly Removal . . . . . . . . . . . 15

Drive Bearing Assembly Installation . . . . . . . . . 16

Sheave Installation . . . . . . . . . . . . . . . . . . . . . . 16

Cutter Stacking Recommendations . . . . . . . . . . . 17

6 in. (15 cm) Coarse Cut Flail Cutters

(Double Space) . . . . . . . . . . . . . . . . . . . . . . 17

8 in. (20 cm) Coarse Cut Flail Cutters

(Double Space) . . . . . . . . . . . . . . . . . . . . . . 18

10 in. (25 cm) Coarse Cut Flail Cutters

(Double Space) . . . . . . . . . . . . . . . . . . . . . . 19

6 in. (15 cm) General Cut Flail Cutters

(Single Space) . . . . . . . . . . . . . . . . . . . . . . . 20

8 in. (20 cm) General Cut Flail Cutters

(Single Space) . . . . . . . . . . . . . . . . . . . . . . . 21

10 in. (25 cm) General Cut Flail Cutters

(Single Space) . . . . . . . . . . . . . . . . . . . . . . . 22

6 in. (15 cm) Fine Cut Flail Cutters . . . . . . . . . . . 23

8 in. (20 cm) Fine Cut Flail Cutters . . . . . . . . . . . 24

10 in. (25 cm) Fine Cut Flail Cutters. . . . . . . . . . 25

6 in. (15 cm) Cut Carbide Millers . . . . . . . . . . . . 26

8 in. (20 cm) Cut Carbide Millers . . . . . . . . . . . . 27

10 in. (25 cm) Cut Carbide Millers . . . . . . . . . . . 28

Diamond Blades . . . . . . . . . . . . . . . . . . . . . . . . 29

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Graco Standard Warranty . . . . . . . . . . . . . . . . . . . 32

2 3A0102C

Warnings

The following warnings are for the setup, use, grounding, maintenance, and repair of this equipment. The exclamation point symbol alerts you to a general warning and the hazard symbol refers to procedure-specific risk. Refer back to these warnings. Additional, product-specific warnings may be found throughout the body of this manual where applicable.

WARNING

DUST AND DEBRIS HAZARD

Use of this equipment to grind concrete and other paving materials can result in the release of potentially harmful dust or chemicals from the materials.

• For use only by sophisticated users familiar with applicable governmental safety and industrial hygiene regulations.

• Use equipment only in a well-ventilated area.

• Wear a properly fit-tested and government approved respirator suitable for the dust conditions.

EQUIPMENT MISUSE HAZARD

Misuse can cause death or serious injury.

• Do not operate the unit when fatigued or under the influence of drugs or alcohol.

• Do not leave the work area while equipment is energized. Turn off all equipment when equipment is not in use.

• Check equipment daily. Repair or replace worn or damaged parts immediately with genuine manufacturer’s replacement parts only.

• Do not alter or modify equipment.

• Use equipment only for its intended purpose. Call your distributor for information.

• Keep children and animals away from work area.

• Comply with all applicable safety regulations.

• Maintain a safe operating distance from other people in the work area.

• Avoid any pipes, columns, openings, or any other objects protruding from work surface.

MOVING VEHICLE HAZARD

Careless and reckless behavior causes accidents. Falling from vehicle, running into people or object, or being struck by other vehicles may result in serious injury or death.

• Do not step on forward/reverse pedals.

• Make turns slowly. Do not make turns greater than 45°.

• Loss of traction may occur going downhill. Do not operate on slopes greater than 15°.

• Do not carry passengers.

• Do not tow.

• Use with line striping equipment only.

• Use appropriate traffic control in all traffic areas. Refer to Manual on Uniform Traffic Control Devices (MUTCD), U.S. Department of Transportation, Federal Highway Administration or local highway and transportation regulations.

MOVING PARTS HAZARD

Moving parts can pinch or amputate fingers and other body parts.

• Keep clear of moving parts.

• Do not operate equipment with protective guards or covers removed.

• Before checking, moving, or servicing equipment, disable power supply.

BURN HAZARD

Equipment surfaces that are heated can become very hot during operation. To avoid severe burns, do not touch hot equipment. Wait until equipment has cooled completely.

3A0102C 3

Warnings

WARNING

FIRE AND EXPLOSION HAZARD

Flammable fumes, such as solvent and paint fumes, in work area can ignite or explode. To help prevent fire and explosion:

• Use equipment only in well ventilated area.

• Do not fill fuel tank while engine is running or hot; shut off engine and let it cool. Fuel is flammable and can ignite or explode if spilled on hot surface.

• Keep work area free of debris, including solvent, rags and gasoline.

• Keep a fire extinguisher in work area.

CARBON MONOXIDE HAZARD

Exhaust contains poisonous carbon monoxide, which is colorless and odorless. Breathing carbon monoxide can cause death. Do not operate in an enclosed area.

PERSONAL PROTECTIVE EQUIPMENT

You must wear appropriate protective equipment when operating, servicing, or when in the operating area of the equipment to help protect you from serious injury, including eye injury, inhalation of dust or chemicals, burns, and hearing loss. This equipment includes but is not limited to:

• Protective eyewear

• Protective shoes

•Gloves

• Hearing protection

• Properly fit-tested and government approved respirator suitable for the dust conditions

4 3A0102C

Component Identification

270 and 390 Models

Component Identification

480 Models

Component Description

A Engine Throttle Lever Adjusts engine speed.

B Engine Stop Switch Supplies power to Engine

C Emergency Shut-Off Clamps onto the operator and shuts engine off if cord is disconnected during

operation.

D Drum Adjustment Dial Raises and lowers cutting drum.

E Drum Engage Lever When lever is engaged, handle bars can be pushed down to raise the cutting

drum off of surface and locked into UP position. Once drum is locked in UP position, GrindLazer can be moved around without drum touching surface.

F Front Wheel Lock Lever Front wheel is usually locked to guide GrindLazer in a straight line. When lever

is engaged, front wheel becomes unlocked and is allowed to turn freely.

G Rear Wheel Parking Brake Prevents rear wheel from moving.

H Drum Access Panel Removable plate that allows access to replace cutting drum.

K Depth Control Wheels Sets depth of drum cut

M Vacuum Port Port to attach vacuum to reduce dust and debris during operation.

N Lift Points Reinforced points used for lifting GrindLazer during transportation or repair.

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3A0102C 5

Drum Replacement

Avoid touching or handling drum after use until it has completely cooled.

Removal

1. Slide replacement drum onto hex shaft.

1. Remove four bolts and Drum Access Panel (H).

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2. Slide drum off of hex shaft.

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Installation

NOTE: Carbide Flail Cutter drums do not require

specific orientation or direction. Carbide Millers and Diamond Blades are directional. They should be stacked so that the arrows on the Millers and Blades face the same direction as the rotation of the drum.

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2. Lower Drum Adjustment Dial (D) and pull Drum Engage Lever (E) so drum rests on ground.

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3. Replace Drum Access Panel (H) and tighten four bolts to 27-30 ft-lb (37-41 N•m).

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Carbide Miller

Diamond Blade

270 and 390 models are designed for “forward cut”

grinding (the drum rotates in the same direction that it travels). 480 models are design for “reverse (up cut)” grinding (the drum rotates in the opposite direction that it travels).

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Forward Cut (270/390 Models)

6 3A0102C

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Reverse (up cut) 480 Models

Cutter Replacement

Removal (Carbide Flail/Carbide Miller)

1. Remove drum (see Drum Replacement, page 6).

2. Loosen six bolts on each side of drum (do not remove bolts).

Cutter Replacement

Installation (Carbide Flail/Carbide Miller)

1. Replace cutters and washers (see Cutter Stacking Recommendations, pages 17 - 29).

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3. Rotate plates on each side of drum so rods are exposed.

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4. Push rod out and remove cutters.

NOTE: Cutters must be centered on drum for best performance.

2. Rotate plates on each side of drum to cover rods.

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3. Tighten six bolts on each side of drum to 125-175 in-lb (14-20 N•m).

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4. Install drum (see Drum Replacement, page 6).

3A0102C 7

Cutter Replacement

Removal (Diamond Blades)

1. Remove drum (see Drum Replacement, page 6).

2. Place drum in vise.

3. Use spanner wrench to loosen spanner nut (turn clockwise) and remove.

NOTE: This nut has a left-hand thread.

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Installation (Diamond Blades)

1. Replace all spacers and diamond blades in the sequence and orientation shown below (blades should be rotated in alternating segments when stacking).

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NOTE: Blades must be centered on drum for best performance.

4. Remove all spacers and diamond blades.

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2. Use spanner wrench to tighten spanner nut (turn counter-clockwise).

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3. Remove drum from vise and install drum (see Drum Replacement, page 6).

8 3A0102C

Belt Replacement

Removal

1. Remove three nuts and washers. Remove belt shroud.

Belt Replacement

4. Tighten bottom bolt to lower pulley plate.

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5. Remove used belt.

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2. Loosen jam nut through two sides of belt.

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3. Use two wrenches to loosen motor mount bolts on each side of scarifier base.

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3A0102C 9

Belt Replacement

Installation

1. Install new belt.

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2. Use two wrenches to tighten motor mount adjustment bolts on each side of scarifier base.

Belt Tension Recommendations:

Series A Models

(3VX375 Belt) 270 390 480

New Belt

Used Belt

New Belt

Used Belt

Tension (Lbf) 130 +/- 5 174 +/- 6 204 +/- 7

Frequency (Hz) 83 +/- 2 96 +/- 2 104 +/- 2

Tension (Lbf) 112 +/- 5 150 +/- 6 176 +/- 7

Frequency (Hz) 77 +/- 2 90 +/- 2 97 +/- 2

Series B Models

(3VX355 Belt) 270 390 480

Tension (Lbf) 145 +/- 5 193 +/- 7 194 +/- 7

Frequency (Hz) 91 +/- 2 105 +/- 2 105 +/- 2

Tension (Lbf) 125 +/- 5 167 +/- 7 167 +/- 7

Frequency (Hz) 85 +/- 2 98 +/- 2 98 +/- 2

4. Tighten jam nut through two sides of belt.

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3. Tighten belt adjustment bolt according to recommended tension below.

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5. Replace belt shroud and tighten three nuts and four screws.

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10 3A0102C

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