RMB:Service

From The Currie Tech Dealer Wiki

For brake lever service, see Non-Specific Bicycle Components#Brake inhibitors.

Contents 1 Wiring diagram 2 RMB Battery Pack 2.1 Battery voltage check 2.1.1 Charger-port reading 2.1.2 Terminal reading 2.2 Battery fuse check 3 Rack sub-components 3.1 Battery Terminals 3.1.1 Terminal inspection 3.1.2 Terminal continuity check 3.1.3 Terminal voltage check 3.2 Power/battery-selector switch 3.2.1 Switch continuity check 3.3 Misc 3.3.1 Voltage check from PnP connector 4 Motor 4.1 Currie Drive 4.2 Hub 5 Rear wheel 5.1 Rear wheel removal

Wiring diagram

For the Vibe, please see Wiring Diagrams#2012

2008 RMB with Currie Drive motor

2009 RMB with Currie Drive motor

2010 RMB with hub motor

These images are for reference only; your bicycle's wiring may differ.

RMB Battery Pack

Testing equipment required:

• DMM
• Probes

Battery voltage check

When fully charged, the RMB battery pack should measure at about 25-26 volts. Immediately after charging, the voltage reading may be higher; let the battery sit off the charger for about 15 minutes before taking a voltage reading. Failure of the battery to charge to the expected maximum voltage may indicate that the pack has reached the end of its useful life.

Charger-port reading

1. Locate the charger port on RMB battery pack, underneath the handle.
2. Notice that the charger port pins are labeled 1,2 and 3.
   • Pin 1 = Positive
   • Pin 2 = Ground
   • Pin 3 = not used for this application
3. Insert the Red probe into the #1 pin and the Black probe into the #2 pin.
4. Getting any reading at all shows that the wiring is properly connected and the batteries are able to receive a charge. If no reading is shown on the DMM than the internal wiring may have become disconnected, the fuse may be bad or the charger port has become damaged. Note the reading on the DMM. For this pack (24V RMB SLA) any reading around +26.0V indicates a fully charged battery. For a K2 pack, fully charged voltage is around 29 volts. Any reading below that indicates that the battery pack needs to be charged for 8 hours regardless of what the indicator LED on the charger shows. Failure of the battery to charge to the expected maximum voltage may indicate that the pack has reached the end of its useful life.

Charger port close-up, showing pin designations (1, 2, 3, counter clockwise from bottom

Terminal reading

1. Turn the battery pack over and locate the two brass output terminals on the bottom of the battery pack.
2. Touch the probes to the brass terminals. Getting any reading at all shows that the wiring is properly connected and the fuse is good. This shows the batteries are able to output power. If no reading is shown on the DMM than the internal wiring may have become disconnected or the fuse may be bad.

Battery fuse check

The K2 Lithium battery pack does not have an internal fuse.

1. Locate the fuse on the backside of the battery pack
2. Unscrew the fuse cap
3. Remove the fuse
4. Test the fuse by setting the DMM to “continuity”. Touch a probe to each side of the fuse. If the fuse is good the DMM will beep, if the fuse is bad the DMM will NOT beep, indicating that the fuse has blown. If fuse is found to be bad, replace with new fuse and retest the output of the battery, both at the charger port and the brass output terminals

Fuse Specs:

• Currie Part # AU-063 (Fuse Spec: 6.3mm x 30.5mm Ceramic Fuse 40A/250V)
• Alternate replacement fuse: AGC series (1/4” x 1-1/4” 40A/32V)
• Cooper Bussman part # BK/AGC-40-R (Fast Acting, Glass Tube)

Rack sub-components

The following components are part of the RMB rack.

Battery Terminals

Testing equipment required:

• DMM
• Probes

Terminal inspection

1. The battery terminals are located on the rack, one on each side.
2. To make removal easier cut the zip ties securing the battery terminal wire to the seat stay of the bike.
3. Remove the four screws securing the battery terminal to the RMB rack.
4. Turn the battery terminal over and locate the four screws holding on the cover plate.
5. Remove the four screws holding on the cover plate.
6. Examine the eyelets and wires for any damage.
7. Remove the screws holding the eyelets to the brass terminals.
8. The eyelets can be replaced separately from the wire harness if they have been damaged or the wire has broken free from the eyelets. Cut off the damaged ring terminal and replace with a new ring terminal. The eyelet spec is:
   • #10 (0.190” / 5mm)
   • 12 AWG
   • Insulated
   • Heavy Duty (thicker tab)
   

   
9. Battery Terminals parts - please note that individual parts are not available. This item is replaced as a whole unit.
   1. Terminal Base Spring Cap
   2. Brass Terminals
   3. Springs
   4. Terminal Base
   5. M5 x 12mm Flat Head Screws
   6. M4 x 10mm Pan Head Screws
   7. M4 x 12mm Pan Head Screw
   8. Terminal Base Cover Plate
   9. M3 x 8mm Flat Head Screws (self-tapping)
10. Note - when reassembling the battery terminal it is CRITICAL to attach the wires in the proper orientation. The red wire goes to the brass terminal marked “+” and the black wire goes to the brass terminal marked “-”. These marks are molded into the plastic. When mounted on the bike the positive (+) brass terminal is in the front, the negative (-) brass terminal is in the rear.

Terminal continuity check

1. Open the controller compartment on the RMB rack.
2. Cut the zip tie securing the battery connector.
3. Test the connection from the battery terminal to the connector by setting the DMM to “continuity”.
4. Touch one probe to the positive (+) brass battery terminal
5. Touch the other probe to the positive (+) pin on the connector.
   • If the connection is good the DMM will beep.
   • If the connection is bad the DMM will not beep. If there is no beep you will need to remove and open the battery terminal and inspect the wire connections. See RMB:Service#Terminal inspection.
6. Repeat this test using the negative (-) rack terminal and negative (-) pin on the connector (black wire)
7. Repeat this test on the other battery terminal.

Terminal voltage check

1. Set the DMM to “Voltage”.
2. Insert the battery into the right side of the RMB rack. Take the connector marked “R” and touch the red probe to the positive (+) pin and the black probe (-) to the negative pin (as shown).
3. The DMM should indicate the voltage of the battery pack. This shows that there is a good connection from the battery pack to battery terminal to connector.
4. Move the battery pack to the left side and repeat the test.
5. After you have confirmed that both battery terminals are in working order reconnect the battery wire connectors to the switch wiring harness.

Power/battery-selector switch

Switch continuity check

1. Open the controller compartment on the RMB rack.
2. Flip the switch to one side.
3. Set the DMM to “continuity”. On the backside of the switch touch one probe to middle prong and the other probe to the side prong.
   • If there is no beep, flip the switch to the other side and retest.
   • If the switch is good the DMM will beep. If the switch is bad the DMM will not beep.
4. Flip the switch to the other side and repeat test.

testing continuity in position 1

testing continuity in position 2

Misc

Voltage check from PnP connector

1. With the battery pack in the right side of the RMB rack, cut the zip tie holding the PnP connector together and pull the connector apart.
2. Flip the switch.
3. Insert the red probe (+) into the positive pin and the black probe (-) into the negative pin on the PnP connector coming from the switch.
4. The DMM should read a voltage coming from the connector. If it does not, flip the switch to the other side and check the DMM again.

Once you have confirmed a voltage reading, move the battery pack to the opposite side and retest.

Motor

Currie Drive

See Non-Specific Bicycle Components#Currie Drive motors

See Currie Drive Chain Tension Adjustment

Hub

See Non-Specific Bicycle Components#Hub motors

Rear wheel

Rear wheel removal

Please see File:RMB Rear Wheel Removal rev2.pdf

Videos