Desco 120.113 Technical Manual

Walk behind deck scarifier
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Descobrader, (120.series), Manual, Jan2007.pdf
January 2007
Part
Description
Descobrader, System
120.116
DB System, Navy
NSN 3895-01-145-6705
120.216
DB System, Dust-free
120.174
DB System, Navy
NSN 5130-01-544-3222
120.226
DB System, Dust-free
Descobrader, Dust Free
120.213
DB, Standard
120.223
DB, Standard
120.2230
DB, Bristle
120.225
DB, Standard
120.233
DB, Standard
120.243
DB, Standard
Descobrader, without Dust Collector
120.113
DB, Standard
120.123
DB, Standard
NSN 4940-01-278-7348
120.1230
DB, Bristle
120.133
DB, Standard
120.1335
DB, Standard
Notes:
1
Pneumatic Descobrader requires 125cfm at 90psi.
2
Electric Descobrader, standard motor, (440v, 3-phase, 1,750rpm). A 220v, 3-phase is available for additional cost.
3
Electric Descobrader, optional 220-1 motor, (220v, 1-phase, 1,750rpm).
4
Electric Descobrader, bristle configuration (440v, 3-phase, 3,500rpm): a) comes with bristle hub, c) can NOT be used
with other hubs.
23031 Arroyo Vista ● Rancho Santa Margarita, CA 92688
949.858.7400 ● 949.858.9141 fax ● 800.337.2648 toll free
www.descomfg.com ● info@descomfg.com
Descobrader
Walk Behind Deck Scarifier
Descobrader Configurations
Power
DC
1
Pneumatic
N
Comes with FOUR Hubs: 120.026 (Hub w/Kung-fu
stars), 120.024 (Hub w/C58 cutters), 120.021 (BPH hub
1
Pneumatic
Y
assy), 120.029 (HDRP Hub with Full Load of HDRP),
2
Elect 440-3/1750
N
with a 25 lb. weight (for ROTO-PEEN application) and a
wrench kit.
2
Elect 440-3/1750
Y
1
Pneumatic
Y
Comes with a choice of ONE of the following hubs:
2
Elect 440-3/1750
Y
120.026 (kung fu stars), 120.024 (5/8" cutter),
4
Elect 440-3/3500
Y
120.021 (BPH) or a 120.027 (roto-peen Hub ONLY,
3
Elect 220-1/1750
Y
roto-peen EXTRA) and DUST COLLECTOR. Shroud
Gasoline 5hp
Y
is height adjustable and have a 3" vacuum outlet.
Propane 5hp
Y
1
Pneumatic
N
2
Comes with a choice of ONE of the following hubs:
Elect 440-3/1750
N
120.026 (kung fu stars), 120.024 (5/8" cutter),
4
Elect 440-3/3500
N
120.021 (BPH) or a 120.027 (roto-peen Hub ONLY,
Gasoline 5hp
N
roto-peen EXTRA).
Propane 5hp
N
DESCO Mfg. Co., Inc.
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Summary of Contents for Desco 120.113

  • Page 1 Electric Descobrader, optional 220-1 motor, (220v, 1-phase, 1,750rpm). Electric Descobrader, bristle configuration (440v, 3-phase, 3,500rpm): a) comes with bristle hub, c) can NOT be used with other hubs. DESCO Mfg. Co., Inc. Industrial 23031 Arroyo Vista ● Rancho Santa Margarita, CA 92688 Vacuums 949.858.7400 ●...
  • Page 2: Technical Manual

    PNEUMATIC AND ELECTRIC MODELS AF525 AND EF525 All rights reserved. No part of this work may be reproduced or transmitted in any form, by any means electronic or mechanical, including photocopying without expressed written permission from the Desco Mfg. Co., Inc.
  • Page 3: Table Of Contents

    TABLE OF CONTENTS PARAGRAPH NO. TITLE PAGE LIST OF ILLUSTRATIONS................LIST OF TABLES..................FOREWORD....................CHAPTER 1: SAFETY AND GENERAL INFORMATION Safety Precautions..................Introduction....................Purpose and Function.................. Capabilities....................Descriptive Data................... Power and Utility Requirements..............1.6.1 Model AF525....................1.6.2 Model EF525....................List of Items Furnished................. List of Items and/or Tools Required..............
  • Page 4 TABLE OF CONTENTS (CONTINUED) TITLE PAGE CHAPTER 4: ILLUSTRATIONS AND PARTS LIST FOR MODEL AF525 CHAPTER 5: ILLUSTRATIONS AND PARTS LIST FOR MODEL EF525 APPENDIX A METRIC CONVERSION OF DIMENSIONS APPENDIX B: PART NUMBER TO PAGE NUMBER CROSS-REFERENCE LIST...
  • Page 5: List Of Illustrations

    LIST OF ILLUSTRATIONS FIGURE NO. TITLE PAGE Model AF525 Rotary-Peening Deck Machine........Model EF525 Rotary-Peening Deck Machine........Types of Scaling Heads Used with Rotary-Peening Deck Machine..Proper Installation of Heads (Hub Assemblies)........Rotary-Peening Deck Machine Weight Installation........ Checking Height of Head..............Rotary-Peening Deck Machine Lubrication Points.........
  • Page 6: List Of Tables

    LIST OF TABLES TABLE NO. TITLE PAGE Descriptive Data.................... Troubleshooting Chart for Model AF525 and EF525 Rotary-Peening Deck Machines..................... Inspection and Replacement Schedule for Parts..........Parts Breakdown Model AF525 Subassembly A (Base)........4-1.1 Parts Breakdown Model AF525 Subassembly A.1 (120.030 Hammer Hub)..4-1.2 Parts Breakdown Model AF525 Subassemblies A.2 and A.3 (120.024 and 120.023 Cutter Hubs)................
  • Page 7: Foreword

    FOREWORD This manual describes the Model AF525 and EF525 Rotary-Peening Deck Machines and includes information for the proper operation, maintenance and repair of each unit. This information is presented as follows: CHAPTER 1 SAFETY PRECAUTIONS AND GENERAL INFORMATION CHAPTER 2 OPERATING INSTRUCTIONS CHAPTER 3 MAINTENANCE INSTRUCTIONS...
  • Page 8: Safety Precautions

    CHAPTER 1 SAFETY PRECAUTIONS AND GENERAL INFORMATION 1.1 Safety Precautions WARNING Listed below are the general safety precautions neces- Always stop machine, shut off power supply, and dis- sary for the protection of personnel and ship/facility. connect any hoses or electrical cords from machines Before undertaking equipment operation or maintenance, before making any adjustments, removing or reinstalling personnel must read, understand and comply with these...
  • Page 9 Figure 1-1 Model AF525 Rotary-Peening Deck Machine...
  • Page 10 Figure 1-2 Model EF525 Rotary-Peening Deck Machine...
  • Page 11: Purpose And Function

    1.3 Purpose and Function 1.5 Descriptive Data Using a rotating head fitted with hammers, cutters, roto- Models of the deck machines shall consist of the data peen flaps or BPH abrasive wheels, the deck machine found in Table 1-1. can be used to remove numerous deck surface cover- ings as described below.
  • Page 12: List Of Items Furnished

    1.7 List of Items Furnished 1.9.2 Model EF525: Perform the following before ma- chine operation. Each Navy model deck machine comes equipped with the following: CAUTION One cutter hub assembly (AF525 and EF525) An authorized electrician must check polarity (direction ·...
  • Page 13: Chapter 2: Operating Instructions

    CHAPTER 2 OPERATING INSTRUCTIONS 2.1 General Information for AF525 and EF525 Examine surface to be stripped. Select correct hub as- semblies (Figure 2-1) to be used according to the follow- ing criteria: Paint, light to medium Use flaps corrosion, non- which provide abrasive non-skid 1-3 mil profile...
  • Page 14: Hammers

    Figure 2-3 Rotary-Peening Deck Machine Weight Installation 2.2.1 Hammers: Hammers should be placed so they 2.2.4 Abrasive Flap Wheel: When using abrasive flap will be forced inward as they strike the surface. wheel, make sure abrasive strikes the surface first. 2.2.2 Flaps: Flaps should be assembled so the printed After proper head is installed, rotate head by hand to be sides of flaps are facing in direction of rotation.
  • Page 15 Always wear goggles or full face shield and ear CAUTION protection. If working in confined space, put on proper respirator. Operate the machine parallel to the edge or change the direction so that the flaps or cutters rotate away from (or Before starting the machine, raise flaps, cutters, ham- off) the edge (Figure 2-6).
  • Page 16: Preparation For Af525

    cating oil) to fill. Check air filter for debris or presence of WARNING water; clean and drain as necessary. To avoid personnel injury or damage to equipment, DO NOT run machine over bolts or other sharp objects Connect low pressure air hose to a low pressure air out- when using flaps, cutters or abrasive wheels.
  • Page 17: Preparation For Ef525

    Press down on handle to raise head of machine from 2.4 Preparation for EF525 Operation (Figure 2-8) surface. Squeeze throttle lever and slowly lower head onto surface. READ ALL WARNINGS AND CAUTIONS IN CHAPTER 1 BEFORE OPERATING THIS MACHINE. During operation, visually check to see that lubricator is at least half full.
  • Page 18: Chapter 3: Maintenance Instructions

    CHAPTER 3 MAINTENANCE INSTRUCTIONS 3.1 Cleaning and Lubrication replace them if any ridges have developed during usage. Pins should have a smooth surface without cracks. Also, Lubricate the following fittings with MIL-G-24139 (Aero hammers can be flipped and reused after they have worn Shell No.
  • Page 19 Figure 3-1 Replacement of Worn or Broken Hammers...
  • Page 20 Figure 3-2 Replacement of Worn or Broken Cutters...
  • Page 21 Figure 3-3 Replacement of Worn or Broken Flaps...
  • Page 22: Replacement Of Worn Or Broken Flaps

    1/8” of solid core, replace. All cutters must be replaced that the pegs of one set are in alternate slots than those at the same time or the worn ones will not hit the sur- of the other set. face. Put drive shaft hub on flat surface and slide HDRP hub Replace the 4 pins in alternate outside holes on inboard over.
  • Page 23 carefully insert a large screwdriver between the set col- lar and the pulley and pry at various points around the set collar until loosened. 3.2.6 Disassembly of AF525 Air Motor (Figure 3-6) NOTE: Numbers in parenthesis corre- spond with those on exploded view drawing, Figure 3-6 and Chapter 4, Fig- ure 4-2.1.
  • Page 24 Install drive end cover (16) onto endplate (14); tighten tary-peening machine for damage and wear, are shown screws as if final assembly (DO NOT install steal (17) at in Table 3-2. this time). 3.5 Stowage To position rotor (13), place two .0015” shims between rotor and endplate;...
  • Page 26: Deck Machines

    TABLE 3-1 TROUBLESHOOTING CHART FOR MODEL AF525 AND EF525 ROTARY-PEENING DECK MACHINES MALFUNCTION PROBABLE CAUSE SOLUTION Loss of air pressure Dirty filter element in lubricator Replace filter Clogged Muffler Clean screen and felt in muffler Frozen air motor Service interior of motor Loss of power Blown fuse Replace fuse...
  • Page 27: Inspection And Replacement Schedule For Parts

    TABLE 3-2 INSPECTION AND REPLACEMENT SCHEDULE FOR PARTS MODELS AF525 and EF525 PART INSPECTION REPLACEMENT Hammers Daily Replace when worn so hammer doesn’t strike surface or when hammer is broken. Cutters Daily Replace when worn to within 1/8” of solid core. Flaps Daily Replace when tips are worn off or fabric is torn.
  • Page 28 CHAPTER 4 ILLUSTRATIONS AND PARTS LISTS FOR MODEL AF525 ROTARY-PEENING DECK MACHINE This chapter presents illustrations and parts breakdown for the AF525 Model Rotary-Peening Deck Machine. Each illustration is an exploded view of the equipment and is accompanied by a table showing the list of parts.
  • Page 30: Parts Breakdown Model Af525 Subassembly A (Base)

    TABLE 4-1: PARTS BREAKDOWN MODEL AF525 SUBASSEMBLY A REFERENCE PART PART NAME QUANTITY NUMBER NUMBER 120.080 Belt Guard Support 750.020 3/8” x 1-3/4” Hex Head Bolt 120.081 Safety Bolt 750.066 3/8” Hex Nut 750.061 3/8” Hex Lock Nut 750.065 ¾” Hex Nut 750.055 ¾”...
  • Page 32: 4-1.1 Parts Breakdown Model Af525 Subassembly A.1 (120.030 Hammer Hub)

    REFERENCE PART PART NAME QUANTITY NUMBER NUMBER 750.028 5/16” X 1” Hex Head Bolt, Grade 5 750.057 5/16” Lock Washer 120.112 Hub Desco 120.164 Endplate, Inboard 550.045 Spacer 800.094 Hammer 120.055 120.074 Endplate, Outboard 120.076 ½” x 3/16” Lock Washer 120.075...
  • Page 33: And 120.023 Cutter Hubs)

    REFERENCE PART PART NAME QUANTITY NUMBER NUMBER 750.028 5/16” x 1” Hex Head Bolt, Grade 5 750.057 5/16” Lock Washer 120.112 Hub Desco 120.164 Inboard Endplates 800.058 5/8” Cutter 120.055 120.074 Outboard Endplate 120.076 ½” x 3/16” Lock Washer 120.075 ½”...
  • Page 34: 4-1.3 Parts Breakdown Model Af525 Subassembly A.4 (120.029 Flap Hub)

    TABLE 4-1.3: PARTS BREAKDOWN MODEL AF525 SUBASSEBLY A.4 (120.029 FLAP HUB) REFERENCE PART PART NAME QUANTITY NUMBER NUMBER 120.112 Hub Desco 120.078 Spacer Ring 2 120.077 Spacer Ring 1 120.066 5” Keeper Pin 120.028 HDRP Flaps, Reload 120.065 HDRP Hub 500.094...
  • Page 35: Parts Breakdown Modle Af525 Subassembly A.5 (120.021 Bph Abrasive Wheel Hub)

    MODEL AF525 SUBASSEMBLY A.5 (120.021 BPH ABRASIVE WHEEL HUB) REFERENCE PART PART NAME QUANTITY NUMBER NUMBER 120.112 Hub Desco 170.023 5-1/4” x 7” Abrasive Wheel 120.015 Outboard Endplate 120.076 ½” x 3/16” Lock Washer 120.075 ½” x 1-1/4” Socket Head Bolt...
  • Page 36: Parts Breakdown Model F525 Subassembly B (Motor)

    TABLE 4-2: PARTS BREAKDOWN MODEL AF525 SUBASSEMBLY B REFERENCE PART NO. PART NAME QUANTITY NUMBER 120.134 Muffler Assembly 120.136 ½” Elbow- 90° 750.038 ¼”-20 x ¼” Set Screw 120.157 550.402 Timing Belt 120.137 Timing Belt Pulley 120.121 Hose Assembly Regulator Motor 120.135 Swivel Fitting 120.122...
  • Page 37 Figure 4-2 Model AF525 Subassembly B Motor.
  • Page 38: 4-2.1 Parts Breakdown Model Ef525 Subassembly B.1 (Air Motor)

    TABLE 4-2.1: PARTS BREAKDOWN MODEL AF525 SUBASSEMBLY B.1 (120.122 AIR MOTOR) REFERENCE PART NO. PART NAME QUANTITY NUMBER 750.033 5/16”-24 x ¾” Hex Head Bolt 750.091 ¼”-20 x ¾” Screw 750.054 ¼” Lock Washer 550.310 End Cover, Dead 550.519 Dowel Pin 550.316 Bearing, Dead 550.317...
  • Page 40: Parts Breakdown Model Ef525 Subassembly C (Belt Guard)

    Figure 4-3 Model AF525 Subassembly C Belt Guard. TABLE 4-3: PARTS BREAKDOWN MODEL AF525 SUBASSEMBLY C REFERENCE PART NUMBER PART NUMBER QUANTITY NUMBER 750.020 3/8” X 1-3/4” Hex Head Bolt 750.019 3/8” x 1-1/4” Hex Head Bolt 750.056 3/8” Lock Washer 750.050 3/8”...
  • Page 41: Parts Breakdown Model Ef525 Subassembly D (Hub Guard)

    Figure 4-4 Model AF525 Subassembly D Hub Guard. TABLE 4-4: PARTS BREAKDOWN MODEL AF525 SUBASSEMBLY D REFERENCE PART PART NAME QUANTITY NUMBER NUMBER 750.020 3/8” x 1-3/4” Hex Head Bolt 750.050 3/8” Flat Washer SAE 120.079 Hub Guard 750.061 3/8” Hex Lock Nut 120.003 Dust Collector Outlet Attachment (optional)
  • Page 42: Parts Breakdown Model Ef525 Subassemblly E (Handle)

    Figure 4-5 Model AF525 Subassembly E Handle. TABLE 4-5: PARTS BREAKDOWN MODEL AF525 SUBASSEMBLY E REFERENCE PART PART NAME QUANTITY NUMBER NUMBER 120.130 Handle Air Valve Assembly 120.131 Hose Assembly, Handle Power 120.082 Handle Assembly 750.050 3/8” Flat Washer 750.056 3/8”...
  • Page 43: 4-5.1 Parts Breakdown Modle Ef525 Subassembly E.1 (Handle Air Valve)

    Figure 4-5.1 Model AF525 Subassembly E.1 Handle Air Valve PART NUMBER 120.130 TABLE 4-5.1: PARTS BREAKDOWN MODEL AF525 SUBASSEMBLY E.1 (120.130 HANDLE AIR VALVE) REFERENCE PART PART NAME QUANTITY NUMBER NUMBER 120.124 Air Valve Body 120.167 Air Valve Cover 120.128 “O”...
  • Page 44 CHAPTER 5 ILLUSTRATIONS AND PARTS LISTS FOR MODEL EF525 ROTARY-PEENING DECK MACHINE This chapter presents illustrations and parts breakdown for the EF525 Model Rotary-Peening Deck Machine. Each illustration is an exploded view of the equipment and is accompanied by a table showing the list of parts. An electrical schematic for the EF525 unit is located at the end of this chapter.
  • Page 47: Parts Breakdown Model Ef525 Subassembly A (Base)

    TABLE 5.1: PARTS BREAKDOWN MODEL EF525 SUBASSEMBLY A (120.114 BASE) REFERENCE P ART NO . P ART N AM E Q U AN TITY NUM BER 120.080 Belt G uard Support 750.020 3/8” x 1-3/4” H ex Head Bolt 120.081 Safety Bolt 750.066 3/8”...
  • Page 48: 5-1.1 Parts Breakdown Model Ef525 Subassembly A.1 (120.030 Hammer Hub)

    REFERENCE PART PART NAME QUANTITY NUMBER NUMBER 750.028 5/16” x 1” Hex Head Bolt, Grade 5 750.057 5/16” Lock Washer 120.112 Hub Desco 120.164 Endplate, Inboard 550.405 Spacer 800.094 Hammer 120.055 120.074 Endplate, Outboard 120.076 ½” x 3/16” Lock Washer 120.075...
  • Page 49: And 120.023 Cutter Hubs)

    REFERENCE PART PART NAME QUANTITY NUMBER NUMBER 750.028 5/16” x 1” Hex Head Bolt, Grade 5 750.057 5/16” Lock Washer 120.112 Hub Desco 120.164 Endplate, Inboard 800.058 5/8” Cutter 120.055 120.074 Outboard Endplate 120.076 ½” x 3/16” Lock Washer 120.075 ½”...
  • Page 50: 5-1.3 Parts Breakdown Model Ef525 Subassembly A.4 (120.029 Flap Hub)

    TABLE 5-1.3: PARTS BREAKDOWN MODEL EF525 SUBASSEMBLY A.4 (120.029 FLAP HUB) REFERENCE PART PART NAME QUANTITY NUMBER NUMBER 120.112 Hub Desco 120.078 Spacer Ring 2 120.077 Spacer Ring 1 120.066 5” Keeper Pin 120.028 HDRP Flaps, Reload 120.065 HDRP Hubs 500.094...
  • Page 51: Parts Breakdown Modle Ef525 Subassembly A.5 (120.021 Bph Abrasive Wheel Hub)

    (PART NUMBER 120.021 BPH ABRASIVE WHEEL HUB ) REFERENCE PART PART NAME QUANTITY NUMBER NUMBER 120.112 Hub Desco 170.023 5-1/4” x 7” Abrasive Wheel 120.015 Outboard Endplate 120.076 ½” x 3/16” Lock Washer 120.075 ½” x 1-1/4” Socket Head Bolt...
  • Page 52: Parts Breakdown Model Ef525 Subassembly B (Motor)

    Figure 5-2 Model EF Subassembly B Motor TABLE 5-2: PARTS BREAKDOWN MODEL EF525 SUBASSEMBLY B REFERENCE PART PART NAME QUANTITY NUMBER NUMBER 120.157 750.038 ¼”-20 x ¼” Set Screw 120.142 Timing Belt Pulley 550.402 Timing Belt 120.063 Motor Plug Receptacle Assembly 120.143 Motor 750.061...
  • Page 53: Parts Breakdown Model Ef525 Subassembly C (Belt Guard)

    Figure 5-3 Model EF525 Subassembly C Belt Guard TABLE 5-3: PARTS BREAKDOWN MODEL EF525 SUBASSEMBLY C REFERENCE PART PART NAME QUANTITY NUMBER NUMBER 750.020 3/8” x 1-3/4” Hex Head Bolt 750.019 3/8” x 1-1/4” Hex Head Bolt 750.056 3/8” Lock Washer 750.050 3/8”...
  • Page 54: Parts Breakdown Model Ef525 Subassembly D (Hub Guard)

    Figure 5-4 Model EF525 Subassembly D Hub Guard TABLE 5-4: PARTS BREAKDOWN MODEL EF525 SUBASSEMBLY D REFERENCE PART PART NAME QUANTITY NUMBER NUMBER 750.020 3/8” x 1-3/4” Hex Head Bolt 750.050 3/8” Flat Washer SAE 120.079 Hub Guard 750.061 3/8” Hex Lock Nut 120.003 Dust Collector Outlet Attachment (Optional)
  • Page 55 Figure 5-5 Model EF525 Subassembly E Handle...
  • Page 56: Box)

    TABLE 5-5: PARTS BREAKDOWN MODEL EF525 SUBASSEMBLY E.1 (120.202 Handle Electrical Box) REFERENCE PART PART NAME QUANTITY NUMBER NUMBER 750.095 8-32 Star Washer 120.020 Overlay Relay 120.018 Contactor 120.019 Transformer 120.064 Receptacle 120.139 ON/OFF Switch 120.140 Contact Block (closed) 120.250 Reset Button Secondary Fuse 750.086...
  • Page 59 APPENDIX A METRIC CONVERSION OF DIMENSIONS INCHES MILLIMETERS INCHES MILLIMETERS 1/15 1.58 3-1/4 82.6 3.18 3-3/8 85.7 3/16 4.76 3-1/2 88.9 ¼ 6.35 3-5/8 92.0 5/16 7.94 3-3/4 95.2 9.53 3-7/8 98.4 7/16 11.1 ½ 12.7 4-1/8 9/16 14.2 4-1/4 15.9 4-3/8 11/16...
  • Page 60 APPENDIX B PART NUMBER TO PAGE NUMBER CROSS-REFERENCE LIST PART NUMBER PAGE NUMBER 120.003 36, 49 120.015 28, 46 120.028 27, 45 120.055 25, 26, 43, 44 120.057 35, 47, 48 120.058 35, 48 120.059 23, 42 120.062 120.063 120.065 27, 45 120.066 27, 45...
  • Page 61 APPENDIX B PART NUMBER TO PAGE NUMBER CROSS-REFERENCE LIST PART NUMBER PAGE NUMBER 120.124 120.125 120.127 120.128 120.130 120.131 120.132 120.134 120.135 120.136 120.137 120.142 120.143 120.150 120.155 120.157 120.160 120.162 23, 42 120.163 23, 42 120.164 25, 26, 43, 44 120.165 120.167 120.201...
  • Page 62 APPENDIX B PART NUMBER TO PAGE NUMBER CROSS-REFERENCE LIST PART NUMBER PAGE NUMBER 550.318 550.319 550.402 29, 47 550.405 29, 43, 47 550.464 550.519 750.014 35, 48 750.019 35, 48 750.020 23, 29, 35, 36, 42, 47, 48, 49 750.023 37, 50 750.028 25, 26, 29, 43, 44...

This manual is also suitable for:

120.223120.133

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