Precor C534i Service Manual Download

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C534i Elliptical Fitness Crosstrainer

Page 40

Procedure 7.5 - Replacing a Crankarm Assembly

Warning:

Care must be taken when work is being performed in the area of the stairarms. Pinch

points exist between the stairarm and ramp and between the stairarm and crankarm, when the
rear covers are removed.

Procedure

WARNING

Before continuing with this procedure, review the Warning and Caution statements listed in Sec-
tion One, Things You Should Know.

Remove the access panel, top, left and right cover sections as described in Procedure 7.1.

Remove the left and/or right stairarm assembly as described in Procedure 7.14.

Note:

Notice the position of the two crank arms. When the crankarms are replaced, they must be posi-
tioned so that they are 180 degrees opposing.

Remove the bolt that secures the crankarm to the input pulley shaft. It will be necessary to
use a Pitman arm puller or 4” to 6“gear puller to remove the crankarm. Do not use a hammer
or mallet to remove the crankarm.

If you are removing both crank arm assemblies, repeat steps 2 and 3 for the second
crankarm assembly.

Diagram 7.5 - Crankarm

Crankarm

Bolt

Summary of Contents for C534i

Page 1: ...nt procedures required to repair and maintain this product This document contains general product information software diagnostic procedures when available preventative maintenance procedures inspection and adjustment procedures trou bleshooting procedures replacement procedures and electrical block and wiring diagrams To move directly to a procedure click the appropriate procedure in the bookmark...

Page 2: ...C534i Elliptical Fitness Crosstrainer Page 2 Unauthorized Reproduction and Distribution Prohibited By Law ...

Page 3: ...ng EFX operation Caution statements are intended to prevent damage to the EFX as a result of the current activity Caution statements included in this manual are listed below Notice the orientation notch on the lower PCA PROM These components must be positioned with the same notch orientation Safety guidelines you should know and follow include Read the owner s manual and follow all operating instr...

Page 4: ... accessory attachments that are not recommended by the manufacturer such attachments might cause injuries General Information For the latest exploded view part number and part pricing information visit the Precor dealer website at www precor com connection ...

Page 5: ...OLS EQUIPMENT phillips and flat head screwdrivers anti static wrist strap digital multimeter standard and metric allen wrench sets open end wrench set Supplies blue loctite drive ratchet and ratchet set socket drive allen set cable ties chip puller Spares rubber mallet data cables snap ring pliers 100 ft lb torque wrench 300 in lb torque wrench automotive belt tension gauge ...

Page 6: ...isplay Test Keyboard Test Heart Rate Brake RPM Battery Procedure 1 This is a self powered unit to power the EFX it must be pedaled or the external power supply must be equipped Note Use the RESET key and the ten key keypad to enter the access code 2 Access the diagnostic program by pressing keys RESET 5 1 7 6 5 7 6 1 sequentially Diagram 2 1 C534i Display Arrow Keys OK Key Cancel Key ...

Page 7: ...d held heart rate and wireless heart rate function must be tested A chest strap heart rate transmitter or a heart rate test transmitter must be used to test the wireless heart rate function 12 When a heart rate signal is received the unfiltered and filtered heart rates will be displayed In addition the Polar heart rate will be displayed in the Heart Rate window The red heart and the smart rate LED...

Page 8: ...yed Press the OK key to enter the Battery test or an S T key to proceed to a different test 21 The battery voltage will be displayed as XX X VDC 22 Press the CANCEL key to return to the Display test or the RESET key to exit 23 You may press the RESET key at anytime in the hardware validation program to exit the hardware validation program ...

Page 9: ...umulated 5 Press the CANCEL key to proceed to the hour meter display 6 The display name HOUR METER will be displayed press the OK key the hour meter will be displayed as the total number of hours of use Fractional parts of an hour are stored internally the display will be truncated to the nearest full hour 7 Press the CANCEL key to proceed to the U Boot software version display 8 The display name ...

Page 10: ...e error log display 22 The display name ERROR LOG will be displayed press the OK key 23 The first error log entry will be displayed 1 ERXX XX STRIDES XX HRS 24 Pressing the S T keys will move you through the log entries Press the OK key to view the selected error Entry 1 will be the most recent error log entry with each succeeding entry being older than the preceding entry 25 If the error log is e...

Page 11: ...ired language is displayed press the OK key to accept the desired language and exit the select language display 5 Press the CANCEL key to save the currently displayed selection and exit the select language display 6 The display name SELECT UNITS will be displayed press the OK key to proceed to the select units display or an S T key to proceed to a different display 7 One of two measurement standar...

Page 12: ...imum pause time between 1 and 120 seconds 16 Press the Cancel key to save the currently displayed selection and exit the set max pause time display 17 The display name SET COOL DOWN TIME will be displayed press the OK key to proceed to the set cool down time display or an S T key to proceed to a different display 18 The current cool down time will be displayed Pressing any S T key will increase or...

Page 13: ...following information Model and serial number Software version numbers for upper and lower PCA s Note See Procedure 2 2 to obtain the upper PCA and lower PCA software versions and part numbers User and program number running when the problem occurred A description of a What happened or failed to happen b The action taken by the user just before the problem occurred c Problem related information su...

Page 14: ... the COM port settings the program may or may not remem ber your directory preference between runs There are 3 directories that were created for you during installation of the software They are underneath the same directory in which you installed the program You ll find one each for con sumer commercial and experience line machines The commercial folder is the default Uploading software and serial...

Page 15: ...dicate that upload is in progress The Progress bar will show the progress of the upload which may take as much as 5 minutes depending on the download speed of the computer When the upload is complete disconnect the cable between the computer and the unit and power the unit down allowing the lower board to completely discharge Power up the unit and verify the software version from the display Uploa...

Page 16: ...wn the stairarms ramps wheels and frame with a damp cloth Every Week Wipe the surface of the electronic console with a slightly damp sponge or soft cloth Dry with a clean towel CAUTION Keep water away from electronic components to prevent shock On Site Preventive Maintenance Service Technician Perform the following preventive maintenance tasks each time you are called to service a EFX Examine the ...

Page 17: ...queaking noises 5 If the EFX makes unusual noises or the electronic display does not change appropriately troubleshoot per section 6 4 6 Press the RESISTANCE S key until you reach Resistance Level 10 Operate the EFX for another 2 3 minutes 7 If the EFX resistance does not change or the operation of the EFX feels inconsistent compared with Resistance Level 1 troubleshoot per section 6 4 8 Press the...

Page 18: ...d between terminals 1 2 terminals 1 3 terminals 1 5 terminals 1 6 and terminals 1 7 on the six phase generator connector J1 Each of the readings should be between 36 Ω and 40 Ω 7 If any of the readings are significantly high or significantly low remove the intermediate cable from the generator and perform the same measurements as in step 4 on the generator connector If the reading are now correct ...

Page 19: ...C534i Elliptical Fitness Crosstrainer Page 19 Diagram 5 1 Lower PCA Red Battery Connection Generator Connector Load Resistor Connections Cable Lower Interconnect ...

Page 20: ...ion statements listed in Sec tion One Things You Should Know WARNING If the EFX has been in recent use the load resistors and mounting bracket may be extremely hot 2 Remove the two screws that retain the black plastic shield on the left side of the EFX Remove the black plastic shield from the EFX 3 Place an automotive or equivalent belt tension gauge on the input belt as shown in Diagram 5 2 Diagr...

Page 21: ... belt as shown in Diagram 5 3 Diagram 5 3 Generator Belt Tension Measurement 7 The belt gauge should approximately 110 lbs If the generator belt tension is significantly high or low it may be adjusted using the adjustment bolt shown in Diagram 5 3 First loosen but do not remove the four generator mounting nuts Thread the adjustment bolt into or out of the generator to change the belt tension When ...

Page 22: ...en removing the outrigger tube to avoid damaging the data cable Carefully remove the left outrigger tube from the shaft at its center point 5 Slide the upper data cable the cable in the outrigger tube out of the main frame tube to expose the mid point connector and the lower data cable 6 Disconnect both cables from the mid point connector and replace the mid point connector with a known good mid p...

Page 23: ...ot necessary to route the test data cable through the frame tube for convenience route it externally Diagram 6 2 Upper Display Cable 11 If the upper data cable corrects the problem replace the cable per Procedure 7 4 If the upper data cable does not correct the problem re connect the original upper data cable to the mid point connector and the upper PCA and continue with step 10 12 Carefully set t...

Page 24: ... with the next step 2 This condition may be caused by either one of the keypads or upper PCA Power the EFX on by pedaling or with the external power supply Remove the display bracket cover from the rear of the display Disconnect heart rate cables Disconnect the data cable from the Upper PCA See Diagram 6 2 3 Remove the four screws that fasten the rear cover to the display Release the six display f...

Page 25: ...d have been unable to correct the problem call Precor customer service 9 Access the diagnostics program per procedure 2 1 10 Test the keypad per Procedure 2 1 11 If all of the keys test good the problem may be user error or a key function that is normally disabled during a particular user program 12 If one or more keys do not function correctly either the keypad display housing or upper PCA could ...

Page 26: ... be inspected by an electrician 5 Troubleshoot the generator per Procedure 6 4 6 If the generator was found to be good the problem will be in either the lower PCA upper PCA or the upper to lower PCA interconnect cables Warning Because this is a self powered unit it will either be necessary to either equip the unit with the optional external power supply or have an assistant pedal on the unit while...

Page 27: ...upper to lower PCA interconnect cables per Procedure 6 1 11 If the upper to lower interconnect cables are found to be good replace the upper PCA 12 If you have performed all of the above tests and are unable to resolve the problem contact Precor customer support DGND TP4 PROM 5D TP13 DS1 LED J2 Connector ...

Page 28: ...e ments are being taken Because of the danger of working on the unit while it is in motion using the optional external power supply is strongly recommended 1 Perform the generator resistance test per Procedure 5 1 If any of the resistance measurements are significantly high or significantly low replace the generator 2 The following voltage readings must be taken while the unit is in motion Extreme...

Page 29: ...gs when neither hand held or chest strap are in use Diagram 6 5 Hand held chest strap heart rate PCA Normal hand held reading No chest strap reading 1 Access the diagnostic program Procedure 2 1 Advance to the heart rate display portion of the diagnostic program Verify that a chest strap signal is not being accepted with either a Polar heart rate test transmitter or a known good chest strap transm...

Page 30: ...ld contacts as described above and test as described in step 6 6 Refer to Diagram 6 5 for the following measurements With an ohmmeter measure between pin 4 of the input connector and the lower right hand held heart rate contact on the handlebar The reading should be 1 Ω or less Measure between pin 3 of the input connector and the upper right hand held heart rate contact on the handlebar The readin...

Page 31: ...ent readings when neither the hand held or chest strap is in use 11 Constant or intermittent heart rate readings when neither heart rate system is in use is caused by something in the near vicinity radiating RF energy that is being received by the chest strap portion of the heart rate PCA 12 Grip the hand held heart rate contacts if the hand held signal is now being accepted something in the near ...

Page 32: ... to perform the portion of this procedure that is required to access the particular section or sections that you are servicing Removal 2 Reach inside one of the stairarm slots in the front portion of the rear cover and locate one of the release points shown in Diagram 7 1 Gently press upwards on the release point to unsnap the access panel from the rear cover Grasp the raised edge of the access pa...

Page 33: ... frame and remove the wedge cover See Diagram 7 3 Diagram 7 3 Wedge Cover 6 Remove the screws that fasten the lower PCA to the front cover section Do not remove any of the wires or cables from the lower PCA 7 Remove the three screws one front and two rear that fasten the front cover section to the frame See Diagram 7 4 Snap Mounting Screw Wedge Cover Mounting Screw ...

Page 34: ... fasten it with the screws removed in step 7 torque the screws to 6 9 inch pounds Re install the cover on the lower PCA 11 Set the wedge cover in its mounting position and fasten it with the screws removed in step 6 torque the screws to 6 9 inch pounds 12 Set the left and right cover sections in their mounting positions making sure that all of the tabs on the left and right cover are correctly ali...

Page 35: ...le from the rear of the upper PCA See Diagram 6 2 5 Release the six snaps that fasten the display face to the display see Diagram 6 2 Lift the display face off of the display Removing and Replacing the Upper PCA 6 Disconnect the metrics PCA cable the keypad cable and the D pad cable from the upper PCA See Diagram 6 3 7 Remove the upper PCA by carefully unsnapping it from its mounts on the display ...

Page 36: ...le from the metrics PCA See Diagram 6 3 20 Remove the metrics PCA by carefully unsnapping it from its mounts on the display front panel 21 Position the replacement metrics PCA at its mounting location on the display housing front panel and press it into place in its mounts on the display front panel 22 Reconnect the metrics cable to the metrics PCA 23 Position the display front panel on the displa...

Page 37: ...then connect the ground lead of the wrist strap to the EFX frame ground or unpainted surface 3 Disconnect the data cable red and black battery wires the load resistor wires and the generator cable from the lower PCA 4 Remove the screws that secure the lower PCA to the front cover section Remove the lower PCA 5 Position the replacement lower PCA at its mounting position on the front cover section F...

Page 38: ...data cable 3 Disconnect the data cable from the outrigger tube from the mid point connector module Disconnect the other end of the data cable from the upper PCA 4 Tape one end of the replacement data cable to the display end of the existing data cable Carefully pull the existing upper data cable out of the hole in the frame near the rear of the ramp as you feed the replacement data cable into the ...

Page 39: ...ata cable into the frame Stop when the replacement data cable appears out of the hole in the frame 14 Remove the tape fastening the two data cables and discard the old data cable 15 Reconnect the data cable to the lower PCA 16 Connect the data cable to the mid point connector place the cables and mid point connector in the frame 17 Carefully set the outrigger tube in its mounting position and fast...

Page 40: ... access panel top left and right cover sections as described in Procedure 7 1 2 Remove the left and or right stairarm assembly as described in Procedure 7 14 Note Notice the position of the two crank arms When the crankarms are replaced they must be posi tioned so that they are 180 degrees opposing 3 Remove the bolt that secures the crankarm to the input pulley shaft It will be necessary to use a ...

Page 41: ...the bolt to 300 inch pounds 25 foot pounds 7 Replace the stairarm assembly as described in Procedure 7 14 8 If you are replacing both crankarm assemblies repeat steps 6 7 and 8 for the second crankarm assembly 9 Set the unit at it s highest resistance setting and use the EFX for a minimum of 3 minutes Stride in a forward direction for half of the time and in a backward direction for half of the ti...

Page 42: ...r and input pulley belts out of the drive unit 7 Remove the input pulley belt Set the replacement input pulley belt in it s mounting position on the step up pulley assembly 8 Set the step up pulley assembly with the generator and input belt at its mounting position in the drive unit Replace the tensioning bolts locking tabs and brackets removed in step 6 Thread but do not tighten the left and righ...

Page 43: ...input belts out of the drive unit 10 Remove the generator belt Set the replacement generator belt in its mounting position on the step up pulley assembly 11 Set the step up pulley assembly with the generator and input belt at its mounting position in the drive unit Replace the tensioning bolts locking tabs and bracket removed in step 6 Thread but do not tighten the left and right tension bolts int...

Page 44: ...ulley assembly mounting nuts 2 per pillow block bearing 5 Straighten the locking tabs and turn the left and right tension bolts counterclockwise until tension is removed from the both belts Refer to Diagram 5 2 Diagram 7 6 Input Pulley Assembly 6 Remove the input pulley assembly Slide input pulley belt off of the input pulley assembly 7 Hold the replacement input pulley assembly at it s mounting p...

Page 45: ...to the frame uprights If necessary loosen the four drive unit mounting bolts align the drive unit and torque the drive unit mounting bolts to 400 inch pounds 10 Tension both belts per Procedure 5 2 Note the differences between tensioning a new belt and a existing used belt 11 Replace the left and right side rear covers ...

Page 46: ...e locking tabs and turn the left and right tension bolts counterclockwise until tension is removed from the both belts Refer to Diagram 5 2 b Remove both tension bolts and slide the input belt off of the step up pulley assembly 5 Place the input belt and step up belt in place on the replacement step up pulley Set other end of the generator belt on the generator pulley 6 Replace the tension bolts a...

Page 47: ... tension from the generator s drive belt 3 Remove the three generator mounting screws shown in Diagram 7 7 4 Remove the three bearing clamp screws shown in Diagram 7 8 5 Slide the generator toward the side of the EFX and lift the generator and remove its drive belt 6 Remove the four generator mounting nuts Disconnect the generator s cable connector from the intermediate cable and remove the genera...

Page 48: ...he three generator mounting screws removed in step 9 Set the bearing clamp in its mounting position replace and tighten the three bearing clamp mounting screws removed in step 9 11 Hand start but do not tighten the four mounting nuts removed in step 6 The generator must be able to move in order to adjust the belt tension 12 Adjust the generator drive belt tension per Procedure 5 3 13 Reconnect the...

Page 49: ...battery bracket tab and remove the battery bracket tab See Diagram 7 9 Diagram 7 9 Battery Mounting 4 Slide the old battery out of its mounting bracket 5 Slide the replacement battery into the battery mounting bracket 6 Replace the battery bracket tab and fasten it with the nut removed in step 3 7 Connect the black wire removed in step 2 to the negative battery terminal Connect the red wire remove...

Page 50: ...cess top left and right cover sections as described in Procedure 7 1 2 If the moveable arm s connecting link is attached to the stairarm remove it from the stairarm 3 Remove the stairarm pivot block retaining ring flat washer and wave washer from the crankarm pin See Diagram 7 10 4 Remove the stairarm from the crankarm and roll the stairarm off of the rear of the ramp Diagram 7 10 Wheel Assembly 5...

Page 51: ...irarm into the ramp channel from the rear of the ramp Slide the stairarm pivot block onto the crankarm pin and replace the wave washer flat washer and retaining ring removed in step 3 8 Replace the left right top and access panel cover sections per Procedure 7 1 ...

Page 52: ...om the stairarm There are two strips of double sided tape between the pedal and the stairarm so there will be some resistance when you remove the pedal 2 Remove the two strips of double sided tape and replace them with two new strips of double sided foam tape Precor part number 39874 101 Diagram 7 11 Stairarm Pedal Viewed from the Bottom of the Stairarm 3 Set the pedal in its mounting position on ...

Page 53: ...he crankarm Slide the stairarm off of the crankarm and leave the wave washer on the crankarm 4 Roll the stairarm out of the rear of the ramp 5 Remove the stairarm pedal from the existing stairarm and install it on the replacement stairarm per Procedure 7 13 6 Remove the stairarm wheel from the existing stairarm and install it on the replacement stairarm per procedure 7 12 7 Roll the stairarm into ...

Page 54: ...procedure 7 14 3 Remove the two bolts that fasten the lower rear portion of the ramp to the frame See Diagram 7 12 Diagram 7 12 Lower Ramp Mounting 4 Remove the two bolts that fasten the upper end of the ramp to the lift motor yoke See Diagram 7 13 5 Carefully lift the ramp and slide it off of the yoke 6 Slide the replacement ramp onto the yoke and hand start the two lower ramp mounting bolts remo...

Page 55: ...cal Fitness Crosstrainer Page 55 Diagram 7 13 Upper Ramp Mounting 7 Replace both stairarms per Procedure 7 13 8 Replace the left right top and access panel cover sections per Procedure 7 1 Upper Ramp Mounting Bolts ...

Page 56: ...am 7 14 Diagram 7 14 Moveable Handlebar Lower End 2 Removing the connecting link prevents it from resting on the outrigger tube and will prevent the painted surfaces of the outrigger tube and connecting link from damage Remove the connecting link mounting bolt and set the connecting link aside Diagram 7 15 Handlebar Connecting Link Connecting Link Moveable Handlebar Mounting Bolt Connecting Link ...

Page 57: ...am 7 16 Diagram 7 16 Moveable Handlebar 5 Set the replacement moveable handlebar in its mounting position Carefully start hand threading the moveable handlebar to avoid cross threading and then tighten 6 Replace the outrigger tube per Procedure 7 18 7 Fasten the connecting link to the stairarm with the hardware removed on step 3 torque the bolt to 40 foot pounds 480 inch pounds Moveable Handlebar ...

Page 58: ...quired to access the cover being replaced 2 Grasp the upper front cover section and lift upwards to remove it See Diagram 7 17 Diagram 7 17 Front Covers 3 Remove the four screws that fasten the top cover section See Diagram 7 18 Diagram 7 18 Top Cover with Upper Front Cover Removed Upper Front Cover Lower Front Cover Upper Mounting Screws Lower Mounting Screws ...

Page 59: ... its mounting position and fasten it with the two screws removed in step 7 8 Set the lower rear cover in its mounting position and fasten it with the screws removed in step 6 torque the screws to 6 9 inch pounds 9 Set the lower front cover in its mounting position ensuring that the tabs in the lower front cover align with the pockets in the lower and upper rear covers Snap the front cover into pla...

Page 60: ...trigger tube Before proceeding with procedure be sure that the EFX is in a solid stable position and will not tip or fall off of the temporary support 3 Remove the three bolts from the upper end of the outrigger tube and four bolts from the lower end of the outrigger tube See Diagram 7 21 Diagram 7 21 Outrigger Tube Mounting 4 Loosen but do not remove the two clamp bolts at the handlebar pivot poi...

Page 61: ...e EFX The data cable is still connected to the mid point connector and the lower end of the outrigger tube 8 Disconnect the data cable from the mid point connector 9 Remove the data cable from the old outrigger tube and feed it into the replacement outrigger tube 10 Connect the data cable to the upper PCA and the mid point connector 11 Set the outrigger tube at its mounting position and fasten it ...

Page 62: ...pport will also facilitate the mounting and alignment of the replacement ramp mounting bracket 2 Remove the four screws that fasten the ramp mounting bracket to the ramp Diagram 7 23 Ramp Mounting Bracket 3 Remove the two large bolts that fasten the ramp mounting bracket to the frame 4 Set the ramp mounting bracket at it mounting position and fasten it to the frame with the hardware removed in ste...

Page 63: ...r IC removal tool see the illustration below 4 The IC s may inserted into their socket by hand by carefully aligning the notch on the IC with the notch on the IC socket and carefully pressing the IC into its socket See the illustrations below for the alignment notches Care must be taken that the IC legs on a DIP28 are all aligned in the socket to prevent the legs from bending when inserted The PLC...

Page 64: ...Page 64 Wiring Diagram 8 1 C534i EFX Metrics PCA D Pad Keypad HR PCA Upper PCA J1 J9 J7 J10 J4 20 Ω 300W Resistor Input Power Jack Battery Generator J2 J4 1 J4 2 M6 M7 M8 M1 M2 J1 1 J1 2 J1 3 J1 5 J1 6 J1 7 Lower PCA R BK R BK BK W R Y G BL ...

Page 65: ...T X RX TX J2 3 J2 6 J7 3 J7 6 Microprocessor System Micrprocessor System M1 J10 Mid Point Connector J4 20 Ohm 300W 20 Ohm 300W M2 Generator M6 M7 R BK Power Input Jack R BK J4 1 J4 2 DS1 5V Green Heart Rate PCA J4 J1 1 J1 2 J1 3 J1 4 R R BK BK Right Top Grip R ight Bottom Grip Left Top Grip Left Bottom Grip J1 1 J1 2 J1 3 J1 5 J1 6 J1 7 BL W G R Y BK M8 Metrics PCA D Pad J1 J9 Flash Memory Upper ...

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Precor C534i, Service Manual

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