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Table of Contents
Related Manuals for Stairmaster SC 916
Summary of Contents for Stairmaster SC 916
- Page 1 StairMaster Stepper/Freeclimber Technical Manual Last revised 10/19/15...
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Page 2: Important Safety Information
The following pages are intended to educate service technicians on the basic maintenance and service actions for the StairMaster Stepper / Freeclimber. By following the enclosed instructions and maintenance schedule, you will extend the life of your equipment and help ensure it will withstand hours of use in your home/facility. - Page 3 Index StairMaster Freeclimber, SC5, and Legacy Stepper Product Details Recommended Tools Preventative Maintenance Major Components: • Resistance System • Power System • Drive System • Step System • Lower Board Update Mechanical Adjustments: • Alternator Belt Tension & Adjustment • Alternator Brush Replacement •...
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Page 4: Technical Specs
Freeclimber Technical Specs Product Dimensions 68" H x 43" L x 27" W (173cm H x 110cm L x 69cm W) Product Weight 155 lbs (70 kg) Max User Weight 350 lbs (159 kg) Input Voltage 100-240 VAC 50/60 Hz 100 VA Power Requirements Display Three choices of displays. - Page 5 Technical Specs Product Dimensions 68" H x 43" L x 27" W (173cm H x 110cm L x 69cm W) Product Weight 155 lbs (70 kg) Max User Weight 300 lbs (136 kg) Input Voltage 100-240 VAC 50/60 Hz 100 VA Power Requirements Display Three choices of displays.
- Page 6 Legacy Steppers Specifications: SC 916 • Resistance Levels: 20 • Step Rate: 24 to 162 steps/minute • Heart Rate Monitoring: Polar-compatible wireless • Computer Display Type: C51 custom LCD • Workouts: 10 Programs - quick start, manual, fat burner, calorie burner, speed intervals, heart rate zone trainer, etc •...
- Page 7 Tools # Units Tool Suggested Manufacturer Minimum Specifications Multi-meter Various Digital, Continuity, Socket Set, SAE Various 1/4" - 5/8" Socket Set, Metric Various 4mm - 21mm Socket driver Various Open end wrenches, SAE Various 1/4" - 3/4" Open end wrenches, Metric Various 4mm - 17mm Hex Bit Socket Set, SAE...
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Page 8: Preventative Maintenance
Preventative Maintenance Cleaning 1. Inspect the frame for any rust, bubbling, or paint chips during the daily cleaning. The salt in perspiration can damage the unpainted surfaces. 2. Do not use glass cleaners or any other household cleaners on the console. Clean the console daily with a water-dampened cloth and wipe dry after cleaning. - Page 9 Resistance system Resistance is applied to the steps of the machine by use of an alternator. The RPM sensor attaches to the alternator and reads the sensor disc to measure the RPMs of the alternator. The resistance system (alternator) connects the gearing system, or 1 and 2 reduction pulleys of the machine via poly-V belt.
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Page 10: Power System
Power System The Freeclimber is self-powered (cordless) with a rechargeable battery back-up. Unless using the TS-1, or TSE-1 touchscreen console, the Freeclimber can be operated without plugging in the external power supply. If using previously mentioned consoles, the machine must be connected to power using the adapter. -
Page 11: Drive System
Drive System Stepper Drive System • Alternator • Speed Sensor • Reduction • Reduction • Drive Hub Assembly Stepper Drive/Belt System Side View • Alternator • Speed Sensor • Reduction, legacy machines used a HTD, or ribbed belt to connect to 2 reduction. - Page 12 Drive System Reduction Pulley & Shaft • First pulley, located directly under alternator. • Legacy machines used a HTD, or ribbed belt to connect to 2 reduction. Current models use Poly-V belt and pulley. • Connects to 2 Reduction Pulley by belt •...
- Page 13 Step System SC916, SC5, and Freeclimber Step Hardware • Pedals • Pedal Arms • Leveling Arms • Connection hardware • Step Chains • Pedal Return Springs Pedals Pedal Arms Leveling Arms 4400 & 4600 Step Hardware • Pedals • Pedal Arms •...
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Page 14: Mechanical Adjustments
Mechanical Adjustments: 1. Remove alternator belt and inspect for cracks, fraying or any other unusual or excessive wear. 2. Spin alternator pulley to check bearings and check pulley for wear. 3. Remove belts and inspect for cracks, fraying or any other unusual or excessive wear. 4. -
Page 15: Pedal Replacement
Step Chains / Return Spring Replacement 1. Support the pedal arm. Unhook the pedal arm return spring from the spring hanger. Lift the step chain up and off the clutch sprocket and lower the pedal arm to the floor. 2. Detach the spring from the step chain by removing the master link. The spring-chain connector is in good condition if it has an hour glass shape. - Page 16 Drive Hub Assembly 1. Support the pedal arm. Unhook the pedal arm return spring from the spring hanger. Lift the step chain up and off the clutch sprocket and lower the pedal arm to the floor. Repeat on the other side. 2.
- Page 17 Reduction Replacement 1. Remove the machine’s covers. 2. Remove the drive chain from the sprocket and belt from the pulley. 3. Loosen the two set screws that hold the sprocket to the shaft. 4. Remove sprocket and note the key/clocking pin. 5.
- Page 18 Reduction Replacement 1. Remove the machine’s covers. 2. Remove the belt from the outer pulley to the alternator and the inner pulley to the 1 reduction. 3. Loosen and remove the set screws and key for the pulley. 4. Remove the external snap ring holding the pulley to the shaft and remove the pulley.
- Page 19 Consoles 7000 PT / 4400 / 4600 C5 Console • Red LED Readout • Non-replacable overlay • Repair/Exchange through National Gym Supply C40 Console – Blue Faced Overlay • Blue LCD Readout • Console PN#: 055-0034 • Replacable overlay: PN# - SM27780-001, SM27790, SM27779 •...
- Page 20 SM916 / SC916 C51/C52 LCD Console • Blue LCD Readout • Console PN#: 003-3625 • Replacable overlay PN#: SM40468 • Menu map available SM5 / SC5 D1 LCD Console • Blue LCD Readout • Console PN#: 050-0035 • Replacable overlay PN#: 050-0287 •...
- Page 21 Gauntlet / Freeclimber D1 LCD Console (Black) • Blue LCD Readout • Console PN#: 050-0035-35 • Replacable overlay PN#: 050- 0287 • USB port for software upload • Menu map available TS-1 / TSE-1 Console (Black) • Touchscreen (TS-1) PN#: 050- 0129-35 •...
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Page 22: Troubleshooting
Troubleshooting 1. No Resistance When Stepping • Verify alternator brush length. o Make sure the brushes are not worn • Run alternator test if brushes look good • Verify speed sensor gap and proper connection to lower board. • Check belt tension on the alternator Poly-V belt. •... - Page 23 Unit Doesn’t Power Up / No Display and Unit Not Powering Up A common misconception about battery powered units, is that it only requires you to step on the pedals to power the console; when in fact the speed sensor plays a major role in powering the console. If you step on the pedals and they fall to the floor due to the console not powering up so there is no resistance, you should check the speed sensor as well as the battery.
- Page 24 Last revised 10/19/15...
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- Page 28 Last revised 10/19/15...
- Page 29 Alternator / Resistance Testing The colored connections to the alternator are as follows: White-B+, Alternator output voltage Brown-Field, Alternator Control Current Black-Ground, Alternator return Prior to proceeding with tests perform continuity checks on the alternator cable, and confirm cable is securely fastened to the alternator and the lower board.
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Page 30: Corporate Headquarters
CORPORATE HEADQUARTERS Core Health & Fitness 4400 NE 77 Avenue, Suite 300 Vancouver, WA 98662 (888) 678-2476 For further support on StairMaster products, please visit: http://support.stairmaster.com Last revised 10/19/15...