GRACE MX II Operating instructions GRACE MX II Operating instructions Page | 83
Table of contents Appendices ..................................................................................................................... 86 Attachments ................................................................................................................... 86 Explanations of symbols.................................................................................................. 87 1. Your GRACE MX II .....................................................................................
4.2. NuVinci N360 rear wheel hub Urban ................................................................... 105 4.3. Gear SRAM X9 Trail .............................................................................................. 106 4.4. Motor Bosch Drive Unit........................................................................................ 106 4.5. Bosch on-board computer ................................................................................... 107 4.6. Bosch control unit ........
8.9. Lubricants ............................................................................................................. 125 8.10. Handlebars and saddle post ................................................................................. 125 8.11. Moving parts and bearings................................................................................... 125 8.12. Frame paint and coating ...................................................................................... 125 8.13.
Explanations of symbols To begin with, we would like to acquaint you with the meaning of the attention and hazard symbols which you can find in these operating instructions. It is very important that you follow the information by the symbols. Caution! This caution symbol points out a potentially hazardous situation through which persons in the environment may sustain injury, or the product or objects may be damaged.
1. Your GRACE MX II The GRACE MX II is a member of the class of electric power assisted cycles, or EPAC's. The motor only provides assistance when you apply force to the pedals. The force applied by the rider is measured in terms of speed, pedalling frequency, and torque through which the motorised assistance is adjusted. The maximum assisted speed is 25 km/h (15.5 mph) or 32 km/h (20 mph) in the USA as a Pedelec, or 45 km/h (28 mph) as an S-Pedelec.
1.1. About this operating manual This operating manual is solely for the GRACE MX II range in the Pedelec- and S-Pedelec variants and frame sizes M and L for model year 2014. Follow the instructions and warnings for your own safety. Failing to do so may damage the bike and/or lead to personal injury, For maintenance work and repairs, please talk directly to your dealer.
1.3.
1.4.
1.5. Anti-tamper plate The anti-tamper plate is located on the down tube under the battery. To see it, the battery will need to be removed. 1.6. Serial number The serial number of your GRACE MX II is located on the down tube at the height of the motor. Please take a note of this serial number and keep it in a safe place. 1.7. Use of the vehicle as intended The GRACE MX II Pedelec is a member of the class of electric power assisted cycles, or EPAC's.
The active and passive lighting equipment required under technical safety regulations are installed in compliance with the StVZO. This technical safety equipment must be inspected regularly and when needed must be repaired by a technician.
2. First time use 2.1. Charging the battery The battery is fitted to the down tube of your GRACE MX II. The battery can be recharged at any time either separately or while in the vehicle. Make sure the voltage set for your charger is the same as that of the power supply (110V or 230V). Next, insert the plug into the socket of the charger. Next, connect the Bosch standard charger to the mains. Connect the charger plug to the battery which has been switched off. The charger display flashes.
2.2. Removing the battery Make sure the system has been switched off before removing the battery. Turn the key in the lock a quarter turn and at the same time, tilt the battery to remove it out of the upper holder. Next remove it from the lower holder. In order to insert the battery, place it with its contacts into the lower holder and tilt it into the upper holder as far as it can go until the lock audibly engages. 2.3.
2.4. Switching the system on and off To switch the Bosch system on and off, press the main switch on the battery. The GRACE MX II drive can also be switched on and of from the on-board computer. The display on the on-board computer is also switched on with the battery. The on-board computer shows the charge state of the battery as well as the settings of the drive unit.
2.5. Adjusting the saddle To adjust the height of the saddle, undo the SW5 hexagon socket in the clamp on the saddle post. Adjust the height of the seat to your height by placing your heel on the pedal when the crank is at the lowest point. Your leg should almost fully extended. Do not extend the saddle post further than the minimum depth mark. Tighten the screw on the saddle post clamp (see torque table).
2.6. Adjusting the saddle angle To change the angle and horizontal position of the saddle, undo the two SW6 hexagon sockets on the saddle clamp which are positioned immediately behind the saddle post above the rear wheel. You can now move the saddle forwards and backwards in the guide and adjust the angle. Afterwards, retighten both screws again (see torque table). 2.7.
2.8. Rear-view mirror (S-Pedelec only) Fix the rear-view mirror to the left side of the handlebars with a hexagon socket SW4 (0.16 in) without play. In the image, the mirror attachment is shown for driving on the right-hand side. The mirror must be attached to the right hand side for driving on the left-hand side. 2.9. Insurance plate (S-Pedelec only) The insurance plate is fixed to the number plate holder beneath the saddle with two screws (M4x10) and two self-sealing nuts.
2.11. Assembly manual, pedal reflectors for Schindelhauer pedals Operating the vehicle without pedal reflectors is a violation of the StVZO. For this reason, we recommend assembly of the pedal reflectors.
Now place the components on the front of the pedals and push it from behind with the second mounting wedge. Then set the M4 nuts on the bolts. Please note that the inclination of the wedge is placed in a way that the reflector is perpendicular to the pedal surface. Now tighten the screws using the above tool. Do not tighten the screws too firmly. You should still be able to align the reflector. Align the centre of the reflector housing and tighten the screws permanently.
3. Before each ride 3.1. Checking the wheels and tyres Before each ride, check: • • • The tyres and wheels for damage and any lodged foreign matter. Damaged wheels can lead to a loss of tyre pressure and other damage. The treads on the tyres. The concentricity of the wheels by allowing both wheels to spin freely. Poor concentricity may be caused by damaged tyres, broken axles or loose or broken spokes.
3.2. Checking the battery fitting Before each ride, check that the battery lock cylinder is latched into position. If the battery is not locked into place via the lock, it may dislodge during the ride and fall off. 3.3. Checking the drive Inadequately secured belt pulleys and guides may dislodge during the ride. Incorrectly adjusted drive belts may drift out of the pulleys while riding the bike.
Pressure point: Each brake has a certain amount of idle motion at the brake lever. When this idle motion is overcome with a small amount of handforce the brake will apply, the pressure point is reached. If the brake is properly adjusted and vented, applying a greater handforce will result in a higher braking performance while moving the brake lever a shorter distance. Brake pads and discs wear due to friction. The more often you ride in a hilly environment or through rain or dirt, the higher the wear.
3.7. Lights Before each journey, make sure that the lights are working. Make sure that the headlamp range on the headlight is adjusted to meet local national regulations. Correctly adjust the headlamp range of the light. Observe Chapter 4.7. 4. Function description 4.1. NuVinci N360 shifter Urban On the NuVinci N360 rear wheel hub, the gear ratio is easily adjusted by pressing the shifter.
To preserve the longevity of the NuVinci hub and the shifter, we recommend you only shift gears when there is a reduced load on the pedal. Avoid shifting under full load and shifting against increased resistance when activating the shifter. Read the information in the NuVinci N360 technical manual 4.3. Gear SRAM X9 Trail The shifting process in the SRAM X9 derailleur system is carried out by activating the switch on the right handlebar grip.
4.5. Bosch on-board computer The display provides information about the: Support level, speed, range, average speed, maximum speed, distance and time. You can choose between four drive types: Eco, Tour, Sport and Turbo. Please follow the information in the original manual for the BOSCH Drive Unit Performance | Intuvia | PowerPack 400 | Charger a. b. c. d. e. f. 1. 2. 3. 4. 5. 6. 7. 8.
4.6. Bosch control unit 10. Control unit 11. Display function "i" button on the control unit 12. Lower value/scroll down button "–" 13. Increase value/scroll up button "+" 14. Push assistance button "WALK" 3. 4. 15. 16. On-board computer On-board computer holder Lock-latch for on-board computer Locking screw for on-board computer (included in delivery) 17. Speed sensor 18.
4.7. Lights A precise lens system scatters light of a highperformance LED evenly on the road surface. This produces a high light intensity thus increasing safety. Pressing the lighting button on the on-board computer switches on the LED headlight and the rear light. The headlamp range must be adjusted according to local national regulations. The adjacent figure shows the requirements as applicable for Germany for example.
4.8. RockShox Sektor RL Trail A lockout function disables the fork's suspension function to allow you to pedal efficiently on a level road surface. To enable it, turn the blue "Compression" setting head on the fork crown to the right as far as it goes. The black setting head can be used to adjust the stiffness of the suspension. The right-hand fork has a red knob which can be used to adjust the speed with which the fork springs down. 4.9. RockShox Domain Urban The spring fork has two setting options.
5. Maintenance 5.1. Before every maintenance Any time before conducting any maintenance work, make sure the drive is switched off. Respect the information in the original BOSCH user manual 5.2. Removing the front wheel spring fork Undo the quick release on the axle of the front wheel. Firstly turn the lever 180° and then engage it into the recess of the axle. The axle can now be unscrewed with the aid of the lever. Pull the quick-release axle out of the fork by moving it towards the right.
When the front wheel is removed, insert the transport safety mechanism between the brake pads to prevent unintended adjustment of the gaps between brake pads. 5.3. Removing the front wheel rigid fork Undo the quick-release axle with a hexagon socket SW14mm. Pull the quick-release axle out of the fork by moving it towards the right. While doing so, firmly hold the front wheel and undo the front wheel by removing it out of the fork in a downwards direction.
5.4. Removing the rear wheel Urban The rear wheel can be removed from the dropout by undoing the axle nuts SW15. Carefully slide the drive belt past the belt pulley. With the rear wheel removed, insert the transport safety mechanism between the brake pads to prevent unintended adjustment of the gaps between brake pads. Please also follow the guidelines in the NuVinci N360 manual 5.5.
5.6. Installing the rear wheel Urban Remove the transport safety mechanism. Carefully place the drive belt onto the belt pulley on the rear wheel. Guide the rear wheel axle into the dropout. Position the rear wheel so that the two torque arm (key washer) on the left and right on the outside slide into the dropout. Make sure that the brake disc slides between the pads. The rear wheel axle must lie evenly between in the two dropouts and the lugs of torque arms in the groove .
5.7. Installing the rear wheel Trail Remove the transport safety mechanism. Guide the rear wheel axle into the dropout. Make sure that the brake disc slides between the brake pads. Fix the rear wheel with the quick release at the rear. Undo the lock-latch of the derailleur so that the chain is retightened. 5.8. Tensioning and aligning the drive belt Urban The drive belt Gates Carbon Drive is very strong and enduring.
Tighten the belt by tightening the setting screw on the dropouts which can be moved horizontally, with a hexagon socket SW5 (with spherical head). You can use the open end spanner SW10 to lock the setting screw. Press the belt in the middle between the front and rear pulley downwards on its upper side with a finger. The belt is tensioned correctly when the belt can be pressed downwards by approx. 12mm.
5.9. Setting the belt guide Urban The gap A between the belt guide and the back of the belt should lie between 1 - 1.5 mm (0.04 0.06 in). To adjust the gap undo the screw with a hexagon socket SW5 (0.2 in) and move the belt guide in the elongated bore. Tighten the screw again with a hexagon socket SW5 (0.2 in) (see torque table). A 5.10. Drive chain Trail The chain should always be metallically clean and have a sufficient coating of lubricant.
5.12. Tyre change Remove the valve cap on the tube and, where present, the knurled nuts on the valve connection. Remove the air from the tube by pressing the valve pin. Using a tyre lever, remove the tyre from the rim. Replace faulty tyres or tubes. Always replace the tube when replacing an existing tyre with a new tyre! Pull the tyre with one side onto the rim. Pay attention to the tyre direction stamped onto the tyre by the manufacturer.
Using the assembly aid, lever the wheel rim over the rim flange. Pump up the tube until the tyre takes shape. Make sure it is positioned correctly in the rim. Pump up the tyre as per the manufacturer's instructions and again check that the tyre is positioned correctly in the rim. Tighten the knurled nuts and screw the valve cap onto the valve. 5.13. Assembly and disassembly of the pedals Apply a thin layer of grease to the threads on the pedal axis and crank. First of all, screw the pedal loose by hand.
5.14. Replacing the brake pads Remove the safety clip from the guide pin. Use a hexagon socket SW 2.5 to remove the guide pin from the brake calliper. Use a slotted screwdriver to press the brake pads back into the piston.
Remove the H springs with the installed brake pads out of the brake calliper. Replace both brake pads when the total thickness is less than 3mm per pad. Place the H springs with the new brake pads into the brake calliper. Tighten the screw fitting before applying the safety clip.
6. Transport To prevent damage to your GRACE MX II during transport, please heed the following instructions: Before transporting on a car roof or tailgate carrier, do not remove firmly-fixed accessories such as the display unit. Slide the transport safeties into the brake callipers provided that you dismantle the wheels. Transporting the GRACE MX II battery in a passenger aeroplane is not permitted.
8. Wear parts, maintenance, vehicle inspection after an accident Some parts and components on your GRACE MX II are susceptible to function-related wear. For this reason, such parts need to be monitored very closely and regularly maintained or replaced. The wear parts include: 8.1. Tyres Tyres wear according to how the GRACE MX II is used and can vary considerably from one rider to the next. Heavy braking which causes the wheel to lock up reduces the service life of the tyre considerably.
8.4. Replacing the belt pulleys when they are damaged The belt pulleys must be replaced if they are damaged by serious external influences. For instance, if you land hard with the front belt pulley when riding over a rock or twig, it may bend, and in this case will need to be replaced. Stones which are drawn in and get in between the belt and belt pulleys can damage the teeth on the belt and may even damage or tear off some of them. The affected belt pulley will need to be replaced in this case as well.
8.8. Handlebar grips Handlebar and grip surfaces are subject to function-related wear and may need to be replaced at regular intervals. The grips must always be firmly attached to the handlebars. 8.9. Lubricants Lubricants change their properties in time. For this reason you should regularly clean and relubricate all lube points to prevent increased wear on the affected parts and bearings. 8.10.
8.13. Maintenance When you bought your GRACE MX II your dealer provided you with a service manual. Please keep to the inspection intervals in the manual for your own safety and riding pleasure! We recommend your dealer performs an initial inspection after 100 kilometres. Spokes, brakes, gears and bearings may shift position in this run in phase due to the parts breaking in. Your GRACE dealer knows your bike very well and has the right tools to maintain your GRACE bike.
9. Technical data GRACE MX II Urban Frame Forks Motor Torque Batteries Display Forks bearing Braking Drive Tyres Charger Weight Special features Range Saddle post Handlebars Handlebar grips Stem Saddle Alloys Front wheel hub Rear wheel hub Pedals Controller Cranks Permissible total weight Frame sizes Charge time Headlight Rear light Aluminium 6061 Rigid fork 26“ Unicrown / RockShox Domain RC Bosch Drive Unit Performance 250 Watt/ Bosch Drive Unit 350 Watt max.
10. Technical data GRACE MX II Trail Frame Fork Motor Torque Batteries Display Forks bearing Braking Drive Tyres Charger Weight Special features Range Saddle post Handlebars Handlebar grips Stem Saddle Alloys Front wheel hub Rear wheel hub Pedals Controller Cranks Permissible total weight Frame sizes Charge time Headlight Rear light Aluminium 6061 RockShox Sektor Gold 140 mm RL Bosch Drive Unit Performance 250 Watt/ Bosch Drive Unit 350 Watt max.
11.
12. Torques Torques for connecting elements of wheels Rear wheel axle nuts Dropout on frame (M8) Torque arm, left dropout 30 Nm 16 Nm 6 Nm Torques for handlebars and stem Stem handlebars Stem forks Gripshift Brake lever 5 Nm 5 Nm 2 – 2.5 Nm (data from NuVinci) 2.8 – 3.4 Nm (data from SRAM) Torques for add-on parts Brake callipers Screw fitting for brake pads Post-mount adapter Saddle clamp Saddle fixing Brake disks 8 – 10 Nm (data from SRAM) 1 Nm 9 – 10 Nm (data from SRAM) 8 Nm 10 Nm 6.
13. Warranty A statutory warranty period of two years has been in effect since 01/01/2002. The warranty period begins when you receive your GRACE MX II from your dealer, who is your contact person for all warranty issues. Please keep the new owner's certificate and invoice or till receipt in a safe place for the duration of the warranty period.
14. EC Declaration of Conformity Name/address of the manufacturer: MIFA AG, Kyselhäuser Straße 23, D-06526 Sangerhausen, Germany Product name: EPAC/Pedelec (vehicle with electric motor as auxiliary drive) This declaration only concerns products in the condition they were placed on the market; parts added by the end user and/or post-purchase interventions are not considered. This declaration becomes invalid when the products are converted or modified without agreement.
