Challenge SCM Technical reference manual

Challenge Manual Single
Cornering Machine
Instruction Manual

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 non-
current, unsupported or no longer produced by The Challenge Machinery Company, and are
provided solely as an accomodation 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 t hese 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.

F.329-B
SCM/MSCM
SINGLE CORNERING MACHINE
Sold and Serviced by
The Challenge Machinery Company
6125 Norton Center Drive
Norton Shores, MI 49441-6081 USA
www.ChallengeMachinery.com
Serial Numbers 2167A & U
p
INSTRUCTION AND
P
A
RTS M
A
NUAL

1.0 Introduction
2
1.0 Introduction
Keep this manual in a safe, convenient place for quick reference by operators and service personnel.
SAFETY ALERT! This symbol means CAUTION: Personal safety
instructions! Pay special attention to the instructions in bold type.
Personal injury may result if the precautions are not read and followed.
READ THIS MANUAL BEFORE OPERATING! If you follow precautions and instructions, you should
have years of trouble-free operation. Contact your Authorized Challenge Dealer for replacements.
FOR PARTS AND SERVICE, contact the Authorized Challenge Dealer from whom you purchased
your machine. Use the illustrations and parts lists at the back of this manual to identify the correct
parts needed. Always give the SERIAL NUMBER and MODEL of your machine to insure the correct
parts are sent as soon as possible.
RECORD YOUR MACHINE SERIAL NUMBER in the space provided on the front cover of this
manual. 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 •Norton Shores •MI 49441-6081.
CHALLENGE MODEL SERIAL NUMBER
ATTN COMPANY
ADDRESS
CITY STATE/PROVINCE ZIP
PHONE DATE INSTALLED
DEALER NAME & CITY
* WARRANTY INFORMATION *
PLEASE REVIEW THE ENCLOSED WARRANTY INFORMATION SHEET
It is very important that you read and understand the conditions outlined in the Warranty Information
Sheet attached to the outside of the shipping container of your machine.
The Warranty Information Sheet must be filled out completely and returned to THE CHALLENGE
MACHINERY COMPANY in order for the warranty to be issued for this machine.
Challenge® is a registered trademark of
The Challenge Machinery Company •6125 Norton Center Drive •Norton Shores, MI 49441-6081
Copyright© 2009 by The Challenge Machinery Company. All rights reserved. Printed in the USA.

1.0 Introduction
3
TABLE OF CONTENTS
1.0 Introduction ...................................................................................................................................... 2
2.0 Safety............................................................................................................................................... 4
2.1 Precautions.................................................................................................................................. 4
2.2 Power Lockout Procedure ........................................................................................................... 4
2.3 Warning Label Definitions............................................................................................................ 5
3.0 Packing List...................................................................................................................................... 6
4.0 Specifications................................................................................................................................... 8
5.0 Accessories...................................................................................................................................... 9
6.0 Installation Guide ........................................................................................................................... 10
6.1 Inspecting Shipment.................................................................................................................. 10
6.2 Unpacking.................................................................................................................................. 10
6.3 Leveling ..................................................................................................................................... 10
6.4 Cleaning..................................................................................................................................... 10
6.5 Power Hook-up (SCM only)....................................................................................................... 10
6.6 Knife and Die Installation........................................................................................................... 10
7.0 User’s Guide .................................................................................................................................. 11
7.1 SCM/MSCM Diagrams .............................................................................................................. 11
7.2 SCM Operation.......................................................................................................................... 13
7.3 MSCM Operation (Manual Machine)......................................................................................... 13
7.4 Side and Back Gauge Adjustment............................................................................................. 13
7.5 Knife and Die Change................................................................................................................ 14
7.6 Straight Diagonal Cutting........................................................................................................... 16
7.7 Lubrication................................................................................................................................. 16
7.8 Operating Tips........................................................................................................................... 17
8.0 Appendix A - Maintenance Guide.................................................................................................. 18
8.1 Mechanical System.................................................................................................................... 19
8.1.1 Knife Return Springs.......................................................................................................... 19
8.1.2 Dovetail Gib........................................................................................................................ 19
8.1.3 Hydraulic System (SCM only) ............................................................................................ 20
8.1.4 Hydraulic Fluid Check ........................................................................................................ 20
8.1.5 Replacing Hydraulic Fluid................................................................................................... 21
8.1.6 Hydraulic Fluid Compatibility List ....................................................................................... 22
8.2 Electrical System (SCM only).................................................................................................... 22
8.2.1 Fuse Check and Replacement........................................................................................... 22
9.0 Appendix B–Parts List.................................................................................................................... 23
9.1 Mechanical................................................................................................................................. 23
9.1.1 A-8300-2 Main Assembly- Knife Head............................................................................. 23
9.1.2 A-8300-2 Main Assembly- Knife Head (Rear).................................................................. 25
9.1.3 A-8300-2 Main Assembly- Underside .............................................................................. 27
9.1.4 A-8300-2 Main Assembly- Hood...................................................................................... 29
9.1.5 A-8300-2 Main Assembly- Base....................................................................................... 31
9.1.6 A-8300-2 Main Assembly- MSCM.................................................................................... 33
9.1.7 83001 Hydraulic Power Unit Assembly- SCM, Rev. B..................................................... 35
9.2 Electrical .................................................................................................................................... 36
9.2.1 E-3042 Basic Machine Schematic ................................................................................... 36
9.2.2 E-3042 Interconnection Diagram ..................................................................................... 37
10.0 Appendix C- Troubleshooting ...................................................................................................... 38

2.0 Safety
4
2.0 Safety
2.1 Precautions
•By nature of the functions the cornering machine performs, it has some inherent dangers
associated with its use. Read and thoroughly understand the safety precautions outlined below.
•This machine is designed for one-person operation. Never operate the machine with more than
one person.
•Cut/crush hazard. Keep hands from under the knife and plunger while in operation.
•Do not operate with any covers removed.
•Safe use of this machine is the responsibility of the operator. Use good judgment and common
sense when working with and around this machine.
•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.
•Disconnect power before performing maintenance. See Section 2.2 , Power Lockout Procedure.
•Observe all caution labels on this machine.
•When replacing hydraulic parts, loosen the connections slowly to relieve pressure. Never loosen
connections while the machine is running. Allow hydraulic fluid to cool before performing
maintenance on the hydraulic system.
•Never leave the machine unattended while running.
•If the machine operates abnormally, consult Appendix C- Troubleshooting.
2.2 Power Lockout Procedure
For maximum safety while making adjustments or repairs to your machine, be sure to disconnect
power from the machine. Disconnect the power plug from its socket.
Figure 1 – Main Power Disconnect

2.0 Safety
5
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.
CUT/CRUSH HAZARD
Keep hands from under plunger and knife while in operation.
CRUSH HAZARD
Do not operate with any covers removed.
SHOCK HAZARD
Disconnect power before removing cover. Replace covers before operation.

3.0 Packing List
6
3.0 Packing List
SCM Single Cornering Machine MSCM Single Cornering Machine
Part No. Description Qty.
CMC-431A Single Cornering Machine 1
or
CMC-431M Manual Single Cornering Machine 1
Each machine includes the following tool kit items.
8315 Knife Hold-Down Block 1
6751 Holder- Plunger 1
6751-1 Clamp Holder- MSCM (MSCM only) 1
W-171 1/8” hex wrench- long arm 1
W-172 3/16” hex T-wrench (extra long) 1
83014 Jogging Aid 1
W-130 3/16” hex wrench 1
6629 Gib Lube 1
W-105 ¼” hex wrench 1
W-131 5/16 hex wrench 1

3.0 Packing List
7

4.0 Specifications
8
4.0 Specifications
Description US Units Metric Units
Maximum Pile Height 4” 10 cm
Table Depth 24” 61 cm
Table Width 20” 51 cm
Table Height 35” 89 cm
Overall Height 51” 130 cm
Footprint 20 X 24” 51 X 61 cm
Net Weight (SCM)
Shipping Weight (SCM)
Net Weight (MSCM)
Shipping Weight (MSCM)
Electrical (SCM only)
½ HP
115 V/ 15 A
1 PH
60/50 Hz
20 A service size

5.0 Accessories
9
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 6761 6762
1-1/4 / 32 mm maximum Straight Diagonal cut

6.0 Installation Guide
10
6.0 Installation Guide
6.1 Inspecting Shipment
The cornering machine has been carefully packed to prevent damage during shipment. However,
claims for damage or loss are the responsibility of the recipient. Inspect all shipments as soon as
they are received. If there is any noticeable damage, note it on the freight bill. Visual and/or hidden
damage must be reported to the claims department of the carrier within 15 days. Contact your dealer
if you need any assistance. Check the contents of the crate against the packing list on page 6. Make
sure there are no missing items.
6.2 Unpacking
Remove the packing materials and braces. Use a safe material-handling device to lift the machine off
the skid. The machine weighs over 250 lbs. Note that the installation location must have a 115 VAC
wall outlet nearby.
6.3 Leveling
Once positioned, level the machine to the floor by turning one or more of the four levelers to the floor.
Turning a leveler clockwise moves it to the floor.
Figure 3 - Leveling
6.4 Cleaning
It may be necessary to clean the machine after installation. It may be cleaned with a solution of dish
soap and water. Do not use petroleum or acid based solvents to clean the machine. Damage may
result.
6.5 Power Hook-up (SCM 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. To many machines on one circuit will
reduce the voltage to each, affecting their performance.
6.6 Knife and Die Installation
Go to Section 7.5 Knife and Die Change on page 14.

7.0 User’s Guide
11
7.0 User’s Guide
7.1 SCM/MSCM Diagrams
Figure 4 - SCM Components

7.0 User’s Guide
12
Figure 5 - MSCM Components

7.0 User’s Guide
13
7.2 SCM Operation
1. Switch on the main power. The main power switch is located on the left side of the stand,
underneath the table. Both the pump and the table light will switch on.
2. Load the stock using the jogging aid. Jog the stock against the side gauge to line it up. Push and
jog it against the back gauge.
Keep hands away from the knife and plunger!
Always use the jogging aid while cutting.
3. Depress and hold the foot switch to cut. Release the foot switch after the knife stops moving
down. The knife returns to the up position.
7.3 MSCM Operation (Manual Machine)
1. Load the stock using the jogging aid. Jog the stock against the side gauge to line it up. Push and
jog it against the back gauge.
Keep hands away from the knife and plunger!
Always use the jogging aid while cutting.
2. Depress the foot pedal to cut. Let up on the foot pedal after the cut is complete.
7.4 Side and Back Gauge Adjustment
1. Switch off the machine and disconnect power. See Power Lockout Procedure on page 4.
2. Open the top cover.
3. Loosen the side gauge mounting screws and use a straight edge to align it tangent to the radius
on the die. Tighten the mounting screws.
4. Loosen the back gauge mounting screws. Place a square against the side gauge.
5. Adjust the back gauge square to the side gauge and tangent to the radius on the die. Tighten the
mounting screws.
6. Reconnect power to the machine

7.0 User’s Guide
14
7.5 Knife and Die Change
Sharp knives! Even used knives are extremely sharp. Severe
lacerations may result from improper handling of knives.
1. The knife head assembly must be held in the down position. Remove the chip drawer. Depress
and hold the foot switch. Insert the hold-down block as shown in the following figure.
Figure 6 - Knife Hold-Down Block
2. Switch off the machine and disconnect power from the machine. See Power Lockout Procedure
on page 4.
3. Open the top cover.
4. Lift the plunger by pulling the washer on top of the knife holder, Figure 7, page 14.
Figure 7 - Retain the Plunger in the Up Position
5. Insert the spring retainer between the washer and the knife holder.
6. Back off the knife adjustment setscrew to prevent damage to the new knife.

7.0 User’s Guide
15
Figure 8 - Knife and Die Change
(Plunger not shown for clarity)
7. Remove the die mounting screws and die.
8. Remove the knife mounting screws and knife.
9. Insert the new knife against the adjustment setscrew and install the knife mounting screw. Snug
the screw but do not tighten at this time.
10. Using the knife adjustment setscrew, adjust the knife until the cutting edge is 1/8” above the
surface on which the die mounts.
11. Securely tighten the knife mounting screw.
12. Place the die on its mounting surface on the table and reinstall its mounting screws.
13. Place a piece of tissue paper between the knife and the die to ensure proper clearance.
Figure 9 - Die Adjustment
14. Adjust the die to make perfect contact with all points against the knife. Securely tighten the die
mounting screws.
15. Remove all tools from the table. Remove the plunger retainer.
16. Close the top cover and reconnect power to the machine.
17. Switch on the machine.
18. Depress and hold the foot switch. Carefully remove the knife assembly hold-down block.
19. Release the foot switch.
20. Reinstall the chip drawer.

7.0 User’s Guide
16
7.6 Straight Diagonal Cutting
Adjusting the side gauge will change the length of a straight diagonal cut. This length should not
exceed 1” when cutting 4” thick piles. It is possible to cut piles 2” thick and below at 1-1/4” length of
diagonal. See section 7.4 Side and Back Gauge Adjustment for side gauge adjustment instructions.
Figure 10 - Maximum Recommended Cut
7.7 Lubrication
Proper lubrication is critical to prevent excessive wear to the machine.
Disconnect main power.
See Section 2.2 Power Lockout Procedure.
•Use gib lube to lubricate the gib and both sides of the dovetail.
•Use light machine oil to knife return rod and springs. Wipe off excess oil.
Figure 11 - Lubrication Locations
Gib Lube Weekly Light Machine Oil Weekly

7.0 User’s Guide
17
•Use light machine oil to lubricate the rear pillow blocks, the foot pedal pull-down pin, and the
pull-down shoulder screw on the MSCM, Manual Single Cornering Machine.
Figure 12 - Pillow Blocks
Figure 13 - Pin and Shoulder Screw
7.8 Operating Tips
•Keep the knife and shoe 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.
•Firm placement of paper against side and back gauges will ensure good cuts.
•Unusual noise and irregular operation indicates a maintenance check is due. A qualified
service technician should check the machine.
•Follow the routine maintenance procedures. Keep chips off bearings and sliding parts.
Lubricate frequently with the Gib Lube provided in the toolkit. Always disconnect power
before lubricating. See Power Lockout Procedure on page 4.

8.0 Appendix A - Maintenance Guide
18
8.0 Appendix A - Maintenance Guide
NOTICE
The instructions on the following
pages are for the use of trained
service personnel only!
Attempting to perform repair and
replacement procedures without
proper training may cause
machine damage or operator
injury!
PARTS CUSTOMERS: The Challenge Machinery Company provides parts with the express
understanding that they are to replace parts found missing or no longer serviceable on
equipment designed and/or manufactured at 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
will void any remaining warranty.