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The Challenge Machinery Company provides owner's manuals on its
products solely as a courtesy to its customers. See the information below
before using this manual.
These manuals are for reference only. These manuals include products which are noncurrent,
unsupported or no longer produced by The Challenge Machinery Company, and are provided solely as
an accommodation to our customers. By providing these manuals, The Challenge Machinery Company
makes no representation or warranty as to the products, their current condition, or their suitability or fitness
for use in any particular application, which are the sole and independent responsibility of the product
owner and user.
Older products may not comply with current safety procedures, guidelines or regulations, and it
is the product owner's and user's responsibility to evaluate the suitability and fitness of the
products in their current use and application. The Challenge Machinery Company makes no
representation, warranty or recommendation regarding any modifications which may be required
on non-current or unsupported products. The Challenge Machinery Company assumes no liability
for any modification or alteration to any Challenge product, and any such modification or
alteration to any Challenge product is not authorized by The Challenge Machinery Company. The
availability of these manuals is solely for the purpose of providing reference information for the products.
This manual may not be complete in all aspects of product maintenance and repair. All products should
be used only by qualified and properly trained personnel, following proper safety procedures. All
products should be regularly inspected and maintained, and their condition, application and use should
be periodically evaluated by qualified personnel. Only qualified and properly trained technicians should
perform maintenance, repair and replacement procedures. Attempting these procedures without proper
training may cause machine damage or operator injury!
Products may be unsupported by The Challenge Machinery Company due to age or the unavailability of
parts from their original manufacturer. No parts or product support will be available to repair or maintain
unsupported products. Older products may not be UL listed (if the product does not have a UL label it is
not a listed product), and may not comply with applicable installation or other regulations or requirements
if relocated to a new facility. Many municipalities require a product to be UL listed before an electrician
will connect power to them. Often the cost of updating an older product to comply with current safety
regulations is greater than the value of the product.
SCM/MSCM
Instruction and Parts Manual
Serial Numbers:
SCM-B-191178 and up,
MSCM-B-191178 and up
Sold and Serviced by
The Challenge Machinery Company
6125 Norton Center Drive
Norton Shores, MI 49441-6081 USA
F.329-E
ChallengeMachinery.com
May 2019

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Table of Contents
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Summary of Contents for Challenge SCM

  • Page 1 Products may be unsupported by The Challenge Machinery Company due to age or the unavailability of parts from their original manufacturer. No parts or product support will be available to repair or maintain unsupported products.
  • Page 2: Introduction

    Also fill out the warranty card accompanying this manual and return it DIRECTLY TO CHALLENGE. If you bought a used machine, it is important to have the following information on record at Challenge. Copy this page, fill in the information and send it care of The Challenge Service Department, 6125 Norton Center Drive ...
  • Page 3: Table Of Contents

    9.1.5 A-8300-3 Main Assembly- Base ..................32 9.1.6 A-8300-3 Main Assembly- MSCM, S/N’s 142609M & Up ..........36 9.1.7 83001-1 Hydraulic Power Unit Assembly- SCM, Rev. A ..........38 9.2 Electrical ............................ 40 9.2.1 E-3356-1 Basic Machine Schematic ................. 40 9.2.2 E-3357-1 Interconnection Diagram ...................
  • Page 4: Safety

     Read and understand all instructions thoroughly before using the machine. If questions remain, contact your Authorized Challenge Dealer. Failure to understand the operating instructions may result in personal injury.  Only trained and authorized individuals should operate this machine.
  • Page 5: Warning Label Definitions

    2.0 Safety 2.3 Warning Label Definitions The following warning label is found on the front cover of the machine. Read and understand the meaning of this symbol. If this label is lost from the machine, it should be replaced. SINGLE PERSON OPERATION Do not operate with more than one person.
  • Page 6: Packing List

    3.0 Packing List MSCM (Single Cornering Machine) (Manual Single Cornering Machine) Part No. Description Qty. CMC-431B Single Cornering Machine (SCM) CMC-431M Manual Single Cornering Machine (MSCM) Each machine includes the following tool kit items. 83027 Hitch Pin or 8315-1 Knife Hold-Down Block...
  • Page 7: Specifications

    4.0 Specifications 4.0 Specifications Description US Units Metric Units Maximum Pile Height – SCM Models 4” 102 mm Maximum Pile Height – MSCM Models 2” 51 mm 24” Table Depth 610 mm 20” Table Width 508 mm 35” Table Height 889 mm 51”...
  • Page 8: Accessories

    5.0 Accessories 5.0 Accessories Figure 2 Knives and Dies Size Knife Number Die Number 1/8” / 3.2 mm 6721-2 6722-2 1/4" / 6.3 mm 6721-4 6722-4 3/8” / 9.5 mm 6721-6 6722-6 1/2" / 12.7 mm 6721-8 6722-8 5/8” / 15.9 mm 6721-10 6722-10 Straight Diagonal...
  • Page 9: Installation Guide

    Do not use petroleum or acid based solvents to clean the machine. Damage may result. 6.5 Power Hook-up (SCM Models Only) Insert the power plug into nearby wall outlet. The machine should operate on a 20 Amp circuit. If the pump motor stalls or operates sluggishly, test the line voltage.
  • Page 10: User's Guide

    7.0 User’s Guide 7.0 User’s Guide 7.1 SCM/MSCM Diagrams Figure 4 - SCM (Power Model) Components...
  • Page 11 7.0 User’s Guide Figure 5 - MSCM (Manual Model) Components...
  • Page 12: Scm (Power Model) Operation

    7. Remove the knife change lock pin from the highest hole and insert it into the lower hole (Figure 6), then release the foot pedal. (steps 8 – 10 are for SCM models ONLY): 8. Place the jogging aid under the clamp plunger as shown in Figure 6.
  • Page 13 16. Remove the chip drawer. 17. Switch on the machine and place a piece of paper over the table sensor (SCM models only). 18. Depress the foot switch/foot pedal and hold it down. 19. Block the entire cutting head down using the block or hitch pin as shown in Figure 8.
  • Page 14 25. Adjust the die such that the radius of the die makes perfect contact with the radius of the knife. Notice: As of November 2011, all Challenge dies have been redesigned to improve trimming of the bottom sheets. You may notice differences between new dies and old style dies. Install new dies as the old style dies were installed, but note the following differences: ...
  • Page 15: Straight Diagonal Cutting

    27. Remove all tools from the table. Close the top cover and reconnect power to the machine. 28. Switch on the machine (SCM models only). 29. Depress and hold down the foot switch/foot pedal. Carefully remove the hitch pin or hold-down block.
  • Page 16: Lubrication

    7.0 User’s Guide 7.7 Lubrication Proper lubrication is critical to prevent excessive wear to the machine. Light Machine Oil Weekly Gib Lube Weekly Disconnect main power. See Section 2.2 Power Lockout Procedure.  Use gib lube to lubricate the gib and both sides of the dovetail. ...
  • Page 17: Operating Tips

    Keep the knife and die sharp and in good alignment. A dull knife and poor adjustments lead to irregular cuts. New or re-sharpened dies should be purchased through an authorized Challenge dealer in order to insure proper sharpening.  Exercise care when handling and changing knives.
  • Page 18: Appendix A - Maintenance Guide

    Challenge. The Challenge Machinery Company assumes no liability for any modification or alteration to any Challenge products, and any such modification or alteration to any Challenge product is not authorized by The Challenge Machinery Company. Any modification or alteration of any Challenge product...
  • Page 19: Mechanical System

    Disconnect main power. See Section 2.2 Power Lockout Procedure. 1. Switch off the machine and disconnect power (SCM models only). 2. Open the top cover. 3. Loosen the top jam nut on the end of the knife return rod.
  • Page 20: Dovetail Gib

    Figure 17 – Lock the Cutting Head Down Disconnect main power. See Section 2.2 Power Lockout Procedure. 4. Switch off the machine and disconnect power (SCM models only). 5. Open the top cover. 6. Loosen three, gib-screw jam nuts and gib screws.
  • Page 21: Hydraulic System (Scm Models Only)

    4. If the fluid level is below the fill line on the side of the tank, remove the filler cap and add fluid until it reaches the filler line. DO NOT OVERFILL! 5. Only use ISO VG 100 hydraulic fluid. This can be ordered from Challenge in five-gallon containers, part number S-1991-3. See Section 8.2.3 . Do not use transmission fluid.
  • Page 22: Replacing Hydraulic Fluid

    8.2.3 Hydraulic Fluid Compatibility List Any ISO VG 100 can be used as a substitute for S-1991-3 hydraulic fluid. 8.3 Electrical System (SCM Models Only) 8.3.1 Circuit Breaker Check If the machine is plugged in but the hydraulics will not turn start when the footswitch is depressed, the circuit breaker may be tripped.
  • Page 23 8.0 Appendix A - Maintenance Guide Figure 19 – Remove Lower Cover to Access Circuit Breaker Circuit Breaker Figure 20 – Circuit Breaker, CB1, on Terminal Rail...
  • Page 24: Appendix B-Parts List

    9.0 Appendix B–Parts List 9.0 Appendix B–Parts List 9.1 Mechanical 9.1.1 A-8300-3 Main Assembly- Knife Head...
  • Page 25 6708 ARM- PUSH 6726 GUIDE- PRESSURE FOOT 6727 SPRING- CLAMP 6733 BLOCK- KNIFE BACKUP 83020 CLAMP SPRING- OUTER, LH WOUND 6705-2 SCM TABLE 6706-2 MOUNTING BRACKET- DOVETAIL 6721-6 KNIFE 6722-6 DIE SHOE 6724-2 PRESSURE FOOT, STRAIGHT DIAGONAL 6749-5 CHIP DEFLECTOR...
  • Page 26: A-8300-3 Main Assembly- Knife Head (Rear)

    9.0 Appendix B–Parts List 9.1.2 A-8300-3 Main Assembly- Knife Head (Rear)
  • Page 27 A-6737 RETURN ROD ASM H-233 ADAPTER - PIPE TO O-RING H-230-10 ELBOW- ORING TO TUBE H-344-1 CYLINDER ASM- SCM H-6417-5 NUT - 5/16-18 HEX H-6424-10 NUT - 5/8-11 HEX JAM H-6918-404 SCREW - 1/4-20 X 1/2 SOCKET HEAD CAP H-6918-410...
  • Page 28: A-8300-3 Main Assembly- Underside

    9.0 Appendix B–Parts List 9.1.3 A-8300-3 Main Assembly- Underside...
  • Page 29 9.0 Appendix B–Parts List A-8300-3 Main Assembly- Underside Parts List Item Part No. Description Qty. 6743 SPACER H-6424-10 NUT - 5/8-11 HEX JAM...
  • Page 30: A-8300-3 Main Assembly- Hood

    9.0 Appendix B–Parts List 9.1.4 A-8300-3 Main Assembly- Hood...
  • Page 31 9.0 Appendix B–Parts List A-8300-3 Main Assembly- Hood Parts List Item Part No. Description Qty. 8306 TOP COVER- SCM 8307 HINGE 38029 KNOB 83023 TOP COVER ASSEMBLY 83024 SLIDING GAURD A-8302 COVER ASSEMBLY A-7545REP003 CORK STRIP H-6423-4 NUT - 1/4-20 HEX KEP...
  • Page 32: A-8300-3 Main Assembly- Base

    9.0 Appendix B–Parts List 9.1.5 A-8300-3 Main Assembly- Base...
  • Page 33 Part No. Description Qty. 6775 TUBIING 16543 LEVELER- BASE 83010 DRAWER ASSEMBLY 83015 FRONT COVER- POWER- SCM 83025 ELECTRICAL MOUNTING BRACKET 40016-8 MOUNT - VIBRATION 7032-M TRIM - 12" LONG 7032-M TRIM - 5" LONG 83001-1 HYD. POWER UNIT ASM., 24VDC COIL...
  • Page 34 9.0 Appendix B–Parts List A-8300-3 Main Assembly- MSCM, S/N’s 142608M & Below...
  • Page 35 MOUNT- VIBRATION 40016-4 MOUNT- VIBRATION A-4672 TREADLE ASSEMBLY A-6737 RETURN ROD ASM A-4656-6 SCM STAND WELDMENT H-5254-1212 SCREW - 3/4 X 1-1/2 SHSS H-6417-6 NUT - 3/8-16 HEX H-6423-#10 NUT - #10-24 HEX KEP H-6424-6 NUT - 3/8-16 HEX JAM...
  • Page 36: A-8300-3 Main Assembly- Mscm, S/N's 142609M & Up

    9.0 Appendix B–Parts List 9.1.6 A-8300-3 Main Assembly- MSCM, S/N’s 142609M & Up...
  • Page 37 THREADED ROD 40016-4 MOUNT- VIBRATION A-4672 TREADLE ASSEMBLY A-6737 RETURN ROD ASM A-4656-6 SCM STAND WELDMENT H-5254-1212 SCREW - 3/4 X 1-1/2 SHSS H-6414-6 NUT - 3/8-16 WHIZ LOCK H-6417-6 NUT - 3/8-16 HEX H-6423-#10 NUT - #10-24 HEX KEP...
  • Page 38: 83001-1 Hydraulic Power Unit Assembly- Scm, Rev. A

    9.0 Appendix B–Parts List 9.1.7 83001-1 Hydraulic Power Unit Assembly- SCM, Rev. A Item Part No. Description Qty. E-1069-19 24 VDC COIL H-270 PLUG- NPT H-200-5 SOLENOID VALVE H-242-10 HOSE ASSEMBLY- HYDRAULIC H-254-5 ELBOW- NPT TO TUBE H-372-5 HYDRAULIC POWER UNIT...
  • Page 39 9.0 Appendix B–Parts List NOTES...
  • Page 40: Electrical

    9.0 Appendix B–Parts List 9.2 Electrical 9.2.1 E-3356-1 Basic Machine Schematic...
  • Page 41: E-3357-1 Interconnection Diagram

    9.0 Appendix B–Parts List 9.2.2 E-3357-1 Interconnection Diagram...
  • Page 42: Ee-3358-1 Terminal Rail Assembly

    9.0 Appendix B–Parts List 9.2.3 EE-3358-1 Terminal Rail Assembly...
  • Page 43 9.0 Appendix B–Parts List EE-3358-1 Terminal Rail Assembly Parts List Item Part No. Description Qty. E-2810 POWER SUPPLY - 120/230V PRIM., 24VDC OUT E-2232-4 RELAY - 24VDC COIL, (1)N.O./(1) N.C. E-3197 KIT - DIN MOUNTS E-1977-21 RAIL - 10" LONG E-2068-8 TERMINAL BLOCK - RAIL MOUNT, #10AWG E-1146-3...
  • Page 44: Appendix C- Troubleshooting

    10.0 Appendix C- Troubleshooting 10.0 Appendix C- Troubleshooting The following list of potential problems and suggests possible causes. Problem Possible Cause The machine will not cycle Power cord is disconnected. Tripped circuit breaker Disconnected wires Knife down motion is sluggish or erratic Low hydraulic fluid level Hydraulic leak Insufficient voltage to machine...
  • Page 45 10.0 Appendix C- Troubleshooting NOTES...
  • Page 46 F.329-E May 2019...

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