Do you have a question about the marvel 8 mark III Series and is the answer not in the manual?
Questions and answers
Junior Turner
March 28, 2025
Self feeder is not working on marvel power hacksaw
1 comments:
Mr. Anderson
March 28, 2025
The self feeder on the AHB Marvel 8 Mark III Series power hacksaw may not be working due to one or more of the following reasons:
- "Column Retract" pushbutton is stuck or needs replacing - Carriage linear bearings are dirty - Cork inserts in the feed clutch are dirty or worn - Feed chain is too tight or too loose - Blade feed gearbox oil is dirty or gears/bushings are worn - Air supply is turned off - Air pressure is too low - Feed Force setting is incorrect
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Summary of Contents for AHB marvel 8 mark III Series
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Sales and Service Centers and Warehouses: Series 8 Mark III Vertical Metal Cutting Band Saw Safety Installation Operation Maintenance Parts Catalog Manufacturing Part No. 8SD10871N, 04/08 Facilities: For machines beginning with S/N 840258 Oshkosh, WI Record your machine’s serial number here: ________________________________________ Direct Sales Managers and...
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MARVEL 8 MARK III IMPORTANT MESSAGE While Marvel Manufacturing Inc. questions regarding safety, machinery and equipment is engineered for condition, or operation of this equipment safety and efficiency, a high degree of must be immediately referred to supervisory responsibility must be placed upon the or engineering personnel.
TABLE OF CONTENTS MARVEL 8 MARK III SAFETY ..............................S-1 WHO MAY USE THIS MACHINE? ....................S-2 FOLLOW THE INSTRUCTIONS ....................S-2 RECOGNIZE SAFETY INFORMATION ..................S-2 SAFETY SIGNAL WORDS ......................S-3 WEAR PROTECTIVE EQUIPMENT ....................S-3 STAY CLEAR OF MOVING PARTS ....................S-3 HANDLE CHEMICALS SAFELY ....................
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MARVEL 8 MARK III TABLE OF CONTENTS MACHINE DESCRIPTION ........................ D-1 OPERATOR’S CONTROL PANEL ....................D-1 BLADE SPEED CONTROL KNOB ....................D-1 POWER PUSHBUTTON ......................... D-1 STOP PUSHBUTTON ........................D-1 START BLADE PUSHBUTTON ....................D-2 BLADE MODE SELECTOR SWITCH ................... D-2 TILT SELECTOR SWITCH ......................
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TABLE OF CONTENTS MARVEL 8 MARK III CUTTING EDGE...........................E-1 FEED PRESSURE ..........................E-1 CUTTING RATE..........................E-1 BLADE SPEED ..........................E-1 USER RECORD ..........................E-2 OPERATION ............................F-1 PRE-OPERATION CHECKLIST ..................... F-1 MACHINE SET-UP .......................... F-2 OPERATION ............................. F-2 SETTING SAW BLADE TO A 3º FORWARD CANT ..............F-4 MAINTENANCE ..........................
SAFETY Industrial Machinery can be Dangerous. Read the safety messages on the following pages as well as the instructions in the operator's manual and those posted on the machine before attempting to install, operate, or maintain this machine. While Marvel Manufacturing Co., Inc. has made every effort to eliminate the potential dangers in its equipment through careful design and guarding, this equipment, if not operated and maintained properly, has the potential to cause serious injury or death.
SAFETY WHO MAY USETHIS MACHINE? Machinery sold by Marvel Manufacturing Co., Inc. is to be installed, operated, and maintained by people familiar with industrial machinery, the hazards associated with industrial machinery environment in which it is used, and the accepted methods of safeguarding against those hazards.
SAFETY SAFETY SIGNAL WORDS A safety signal word always accompanies the safety- alert symbol. The safety signal words - DANGER, WARNING, and CAUTION - identify the severity of a hazard. • DANGER indicates a situation which, if not avoided, will result in serious injury or death. •...
SAFETY HANDLE CHEMICALS SAFELY • Direct exposure to hazardous chemicals can cause serious injury. Potentially hazardous chemicals used with this machinery include lubricants, hydraulic fluid, and cutting fluid (coolant). • The Material Safety Data Sheets (MSDS) provide specific details on these chemical products including the specific hazards, safety procedures, and emergency responses.
SAFETY SAFE MATERIAL HANDLING Loading and unloading material from the machine presents safety hazards of its own. • Wear appropriate safety equipment including safety shoes, hard hat, safety glasses, etc. • Do not allow any part of your body to come between the material and any other surface.
SAFETY HAZARDOUS METALS Your machine was designed specifically for metal cutting. However, some metals, such as beryllium, magnesium, and lead, have characteristics which, if not handled properly, will cause serious injury or death. • Know the material you are cutting and the hazards it presents.
SAFETY OPERATE THE MACHINE SAFELY • Use the machine only for its intended use – metal cutting within its specified capacity. • Do not operate the machine if it has been altered in any way, is defective, or has worn, missing, or broken parts.
SAFETY PUNCHING AND SHEARING EQUIPMENT • Always wear gloves when handling stock which has been punched or sheared. The edges can be extremely sharp. • Never place your hands inside the safety guards. • Keep fingers and hands away from the tooling. •...
SAFETY SERVICE THE MACHINE SAFELY Review all safety information provided with your machine before servicing the machine. Additionally, important safety information which the service technician should be aware of is located throughout this safety section. • Turn off the machine's power and lock it out before adjusting, servicing, or cleaning the saw.
SAFETY ELECTRICAL HAZARDS Contact with high voltage will cause death. • Never perform any maintenance on or near electrical components until the machine's power source has been disconnected. Lock out power before servicing. • The only way to be sure the machine's electrical circuits are safe is to turn off the machine's power supply at your facility's circuit panel and lock it out.
INSTALLATION MARVEL 8 MARK III IMPORTANT LIGHTING The entire machine should be well lit, both for operator safety, convenience and for Before completing any steps in this section, read machine maintenance. the entire safety section. The safety section STOCK MOVEMENT Allow sufficient space contains important information which will around the machine for loading and unloading safeguard both yourself and the machine during...
MARVEL 8 MARK III INSTALLATION Never place any part of your LEVELING The saw is equipped with four WARNING leveling screws - one on each leg. A floor body under the saw while the saw is suspended. washer should have been placed under each leveling screw when...
INSTALLATION MARVEL 8 MARK III of the motor enclosure. This plug receptacle can be found on the underside of the motor enclosure and can be connected without gaining access to the motor enclosure. View of Bottom Side of Motor Enclosure Expanded Metal Opening for Coolant Pump Cord Coolant Pump Cord before Field Connecting...
MARVEL 8 MARK III INSTALLATION CONNECTING POWER Main Panel Ground Lug Hazardous voltage. Will cause DANGER serious injury or death. Turn off the supply electricity at your facility's circuit breaker before connecting the saw to an electrical circuit. All electrical wiring must be WARNING done by a qualified electrician conformance...
INSTALLATION MARVEL 8 MARK III LUBRICATION 7. Turn the main disconnect to the “Off” position. The lubrication points and intervals should be 8. Open the electrical enclosure door. checked before operating the saw. Refer to the 9. Lock out the disconnect switch. Maintenance Schedule.
MARVEL 8 MARK III SPECIFICATIONS NOTE: Metric specifications represent nearest SI Unit converted from the basic U.S. Customary Unit. NOTE: Specifications given are for standard machines. Available options may alter these specifications. Refer to the Technical drawings supplied with the machine for specifications specific to your saw. All specifications are subject to change without notice.
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SPECIFICATIONS MARVEL 8 MARK III NOTE: Metric specifications represent nearest SI Unit converted from the basic U.S. Customary Unit. NOTE: Specifications given are for standard machines. Available options may alter these specifications. Refer to the Technical drawings supplied with the machine for specifications specific to your saw. All specifications are subject to change without notice.
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MARVEL 8 MARK III SPECIFICATIONS BLADE/BLADE DRIVE Blade Size (L x W x T ): U.S. Customary Unit Metric Standard Column: 15’ 4” x 1.25” x 0.42” 4674mm x 32mm x 1.07mm High Column: 16’ 4” x 1.25” x 0.42” 4978mm x 32mm x 1.07mm Blade Speed 50 to 450 fpm...
MARVEL 8 MARK III COMPONENTS IMPORTANT: This section is not intended SERIAL NUMBER to describe the operation of the saw, but The machine's serial number is stamped on the rather function operation rear of the right side of the saw table. The serial individual components.
MACHINE DESCRIPTION MARVEL 8 MARK III The Marvel Series 8 is a versatile, vertical, Avoid serious injury. Make DANGER metal cutting band saw designed for rugged, sure all guards and covers are continuous use. It can perform cuts on a wide closed and properly positioned variety of round, rectangular, structural and and no part of your body is in...
MARVEL 8 MARK III MACHINE DESCRIPTION START BLADE PUSHBUTTON The black TILT SELECTOR SWITCH The “TILT” “Start Blade” pushbutton starts the blade drive selector switch is optional on saws supplied motor. with standard columns. It is supplied as standard with saws supplied with the High Column option.
MACHINE DESCRIPTION MARVEL 8 MARK III COLUMN AUTO RETRACT SELECTOR COOLANT SYSTEM SELECTOR SWITCH SWITCH The “COLUMN AUTO RETRACT” The “COOLANT SYSTEM” switch is a two selector switch is a two position switch. position switch. OFF: In the “OFF” position, the column travel FLOOD: In the “FLOOD”...
MARVEL 8 MARK III MACHINE DESCRIPTION FEED FORCE ADJUSTMENT KNOB The The blade guard is hinged so it can be opened “FEED FORCE” adjustment knob is used to set for access to the upper blade guides for the amount of force that is applied to the work adjustment and blade installation.
MACHINE DESCRIPTION MARVEL 8 MARK III MAIN ELECTRICAL DISCONNECT COLUMN TILT LOCK HANDLE The SWITCH The main electrical disconnect switch column tilt lock handle, mounted on the rear of is located on the electrical enclosure. The switch the saw column, locks and unlocks the saw disconnects the saw's electrical circuits from the column for tilting.
MARVEL 8 MARK III MACHINE DESCRIPTION depending on which side the controlling vises rapid reconfiguration of the vises for miter cuts are located on. or for the installation of optional high vises jaws. FRONT BLADE TRAVEL LIMIT: The rear vise jaw rests on a ratchet nut equipped proximity actuator that controls the distance that with a set screw and is inserted into a T-slot in the carriage travels forward is connected to a...
MACHINE DESCRIPTION MARVEL 8 MARK III arrangement. It is designed to allow the blade to DOOR SAFETY INTERLOCKS partially enter the work piece and is useful in Each of the four band wheel doors is equipped notching operations. See following photo for with a door safety interlock switch which notching travel limit.
MARVEL 8 MARK III MACHINE DESCRIPTION PNEUMATIC SYSTEM (COMPRESSED NOTE: See the pneumatic schematic supplied AIR) The saw is equipped with a compressed with this Operator’s Manual for additional air system that requires the customer to provide detail regarding the compressed air system a minimum of 5 SCFM (standard cubic feet per minute) of clean/dry compressed air at a Lube Rate Adjust Knob...
MACHINE DESCRIPTION MARVEL 8 MARK III uses a saw column which is 6" (152mm) higher OPTIONAL EQUIPMENT than the standard Series 8 saw column. This The following equipment can be installed by option increases the saw's vertical capacity from customer as optional equipment on the Marvel 22"...
MARVEL 8 MARK III MACHINE DESCRIPTION MIST LUBRICATION SYSTEM The Unist mist lubrication system is an environmentally accepted lubrication/coolant system which dispenses minute amounts lubricant, eliminating the mess and waste of conventional flood coolants. This system also reduces heat build-up resulting in faster, more accurate cuts and increased blade life.
CUTTING EDGE MARVEL 8 MARK III Metal sawing is influenced by several elements FEED PRESSURE or combinations of elements which are always Generally, the feed pressure increases as the present during the cutting cycle. Some of those material size or cross section increases. elements are: −...
OPERATION MARVEL 8 MARK III Avoid personal injury and/or serious injury. The maximum CAUTION damage to the saw. Do not pressure that is supplied to the operate this saw until you are system should NOT exceed thoroughly familiar with the 150 PSIG (10.3 BAR) to function and location of each prevent component failure and...
MARVEL 8 MARK III OPERATION □ Inspect the band wheels and blade OPERATION guides and remove chips. IMPORTANT: This section assumes the □ Inspect the blade wiper and chip brush. operator is already familiar with the function Replace them if worn. See Maintenance and location of the components described in section.
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OPERATION MARVEL 8 MARK III switch to tilt the saw frame to the desired 10. Press COLUMN FORWARD cut-off angle. pushbutton to start the column/blade travel towards the forward position. 11. As column/blade begins moving If vises are swapped, care CAUTION forward, set the blade FEED FORCE setting must be taken not to cut with...
MARVEL 8 MARK III OPERATION A. Unclamp the work stock from the vices, Avoid serious injury. Keep WARNING reposition the work stock for the next cut away from the drive and avoid and clamp work stock in vices. direct contact with accessories during use of the air ratchet.
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OPERATION MARVEL 8 MARK III 5. Open the lower band wheel doors and the upper blade guard carefully. Remove the Blade Tension Air Ratchet from Blade Tensioner mechanism by removing the M8 Thumb Screw (A) on top of the Ratchet Support (B) to remove the ratchet from the support.
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MARVEL 8 MARK III OPERATION 12. Move the lower blade guide to the position 13. Secure the Air Ratchet to the Blade shown below to allow the 3º Blade Cant. Tensioner mechanism (see step 5 above) and See the following illustrations. apply tension to the saw blade.
MAINTENANCE MARVEL 8 MARK III Regular maintenance of your Marvel band saw □ Check the oil level in the carriage feed will help it deliver consistently accurate worm gearbox. Add Mobil SHC634 or performance. This section begins with a equivalent oil as necessary suggested maintenance schedule and is followed by instructions for all common maintenance CLEANING...
MARVEL 8 MARK III MAINTENANCE to avoid serious injury during LUBRICATION normal saw operation. Under normal use, the Marvel Series 8 requires very little lubrication. The few areas that do require periodic lubrication are described here. main electrical WARNING disconnect switch must always NOTE: All bearings have been grease packed turned "Off"...
MAINTENANCE MARVEL 8 MARK III OIL RESERVOIR The oil reservoir is discharge into container while mounted to the end of the table inside the motor removing air bubbles from the tube line. enclosure. The reservoir is filled at the factory B.
MARVEL 8 MARK III MAINTENANCE with 8 ounces of Unist Coolube 2210 vegetable- Always wear impact-resistant WARNING based cutting fluid. Coolube 2210 eye protection when involved recommended for non-ferrous cutting, and with the operation, repair, or Coolube 2210EP for ferrous cutting. Use of maintenance of the air ratchet other lubricant will void the Unist warranty.
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MAINTENANCE MARVEL 8 MARK III 8. Lift the Lower Blade Guide Block blade Upper Bandwheel “Rotation Handle” 45º upwards from its lowered/seated position. Using the raised Saw Blade handle, rotate the blade 90º from the cutting direction. See following photo. Blade (shown Upper Blade Guide rotated 90º...
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MARVEL 8 MARK III MAINTENANCE Blade Guard (shown open) Note the position of the blade's teeth in your left hand. They should point down and towards your body. 11. Lower the bottom loop of the blade through the opening in the saw table and place the upper loop around the upper band wheel.
MAINTENANCE MARVEL 8 MARK III 23. Carefully observe the tracking of the blade deposited on the bulb, causing premature on the upper and lower band wheels while failure of the bulb due to heat build-up in the band wheel doors are open, making sure that area.
MARVEL 8 MARK III MAINTENANCE 5. Remove the coolant pump intake screen and BLADE GUIDE ADJUSTMENT AND wash it off with a stream of water. Inspect REPLACEMENT the screen for holes and tears. Replace the The blade guides require little maintenance, screen if damaged.
MAINTENANCE MARVEL 8 MARK III BLADE PRESSURE BLOCK pressure block with a new one after loosening ADJUSTMENT AND the blade slightly as described in the previous blade changing procedure. Make sure the new REPLACEMENT block is installed so the carbide edge will be in Each guide block has a blade pressure block contact with the blade.
MARVEL 8 MARK III MAINTENANCE 7. After both guide blocks have been retracted BLADE GUIDE CARRIER from the saw blade, rotate the top and ALIGNMENT bottom blade guide blocks 90º to position The blade guide carriers can be adjusted so the the blade in its normal operating position.
MAINTENANCE MARVEL 8 MARK III 12. Close the blade guard and all band wheel Blade Alignment Screw covers. 13. Turn electrical power on and Push the POWER pushbutton energize controls, put the BLADE MODE selector switch in the TRACK position and push the BLADE START pushbutton to momentarily run the blade.
MARVEL 8 MARK III MAINTENANCE 2. Remove the blade from the saw. See Blade 2. Turn off the saw's main electrical disconnect Changing Procedure. switch. 3. Loosen the machine screws that secure the 3. Open the lower band wheel covers. blade wipers, remove the wipers and install 4.
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MAINTENANCE MARVEL 8 MARK III IMPORTANT: To adjust the blade tracking NOTE: The adjustments below are interrelated. as described below, it is necessary to put the One adjustment may affect the other and may BLADE MODE selector switch in the need to be performed several times to achieve TRACK position.
MARVEL 8 MARK III MAINTENANCE indicates 30,000 lb/in (2,200 kgs/cm or 207 RE-CALIBRATING THE BLADE N/mm TENSIONER Proper blade tension is essential for clean, accurate cuts and long blade life. The blade tensioner torque limiter was calibrated at the factory to provide proper blade tension, however, over time;...
MAINTENANCE MARVEL 8 MARK III 7. After the above adjustment is made, loosen Blade Breakage Sensor Adjustment Nuts the tension on the blade with the air ratchet, (move sensor closer to upper bandwheel if it is not sensing wheel rotation) reverse the air ratchet and retighten the blade.
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MARVEL 8 MARK III MAINTENANCE The main electrical disconnect 6. Inspect the face of the friction disk (C) for WARNING switch must always be turned scoring or other damage. Remove and to the "Off" position and replace if damaged and/or wipe off if not clean and dry.
MAINTENANCE MARVEL 8 MARK III 4. The slack in the chain should not exceed ¼” ADJUSTING THE FEED CHAIN (6.4 mm) total between the top and the Proper feed chain tension is important for the bottom strand of the chain. smooth carriage/column travel and accurate saw 5.
MARVEL 8 MARK III MAINTENANCE CARRIAGE FEED BRAKE Carriage Feed Chain Access Openings Inside ADJUSTMENT/REPLACEMENT Table Top Slot Before servicing, release air WARNING pressure from the system by using the lockout valve and applying a padlock to prevent unauthorized application of compressed air and to avoid serious injury.
MAINTENANCE MARVEL 8 MARK III 2. The Carriage Brake is engaged when the Feed Pulley with Cork Inserts Linear Solenoid is energized. 3. With the brake disengaged, there is a gap between the Brake Pad (C) and the Friction Disc (D). There should be no more than a 1/8”...
MARVEL 8 MARK III MAINTENANCE 2. When the belt appears cracked or worn, it HIGH SPEED CARRIAGE GUIDE should be replaced. BELT TENSION/REPLACEMENT 3. Replace the belt, reassemble with new belt Before servicing, release air WARNING and test by cycling carriage forward and pressure from the system by back after reconnecting electrical power.
MAINTENANCE MARVEL 8 MARK III 5. From the under the table, loosen the M10 FINAL DRIVE BELT TENSION/RE- bolt that mounts the Spring Loaded Belt PLACEMENT Tensioner. This will remove the tension on The main electrical disconnect the belt. WARNING switch must always be turned 6.
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MARVEL 8 MARK III MAINTENANCE Tensioner Adjustment Bolt A – Final Drive Belt D – Pivot Belt Pulley B – Spring Loaded Belt E – 3 Bolts (attach the Spline Tensioner Hub) C – Bevel Gear Belt Pulley F – Spline Hub G1 –...
TROUBLESHOOTING MARVEL 8 MARK III NOTE: It is beyond the scope of this troubleshooting guide to cover every possible problem or cause of a problem. The best trouble-shooting guides are a thorough knowledge of the machine's systems and the technical drawings supplied with the machine. −...
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MARVEL 8 MARK III TROUBLESHOOTING Saw column will not feed or − "Column Retract" pushbutton is stuck or needs replacing. feed smoothly − Carriage linear bearings are dirty − Cork inserts are dirty or worn in feed clutch − Feed chain is too tight or too loose −...
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TROUBLESHOOTING MARVEL 8 MARK III − Improper blade Blade breakage − Improper cutting fluid or mixture − Worn or chipped blade pressure block − Worn or chipped blade guide − Defective blade weld − Material loose in vise − Improper blade speed −...
MARVEL 8 MARK III PARTS When ordering repair parts always provide the IMPORTANT following information: Never operate the machine unless all parts are Machine model number (8MARK III) installed and all guards and covers are closed and functioning properly. Machine Serial number. Avoid serious injury.
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Do you have a question about the marvel 8 mark III Series and is the answer not in the manual?
Questions and answers
Self feeder is not working on marvel power hacksaw
The self feeder on the AHB Marvel 8 Mark III Series power hacksaw may not be working due to one or more of the following reasons:
- "Column Retract" pushbutton is stuck or needs replacing
- Carriage linear bearings are dirty
- Cork inserts in the feed clutch are dirty or worn
- Feed chain is too tight or too loose
- Blade feed gearbox oil is dirty or gears/bushings are worn
- Air supply is turned off
- Air pressure is too low
- Feed Force setting is incorrect
This answer is automatically generated