Hoffmann MONTY 3550 TTGP Service Manual
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Hoffmann MONTY 3550 TTGP Service Manual

Passenger tire changers
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PASSENGER
TIRE CHANGERS
SERVICE MANUAL
DO NOT COPY NOR DISTRIBUTE
No part of this document may be photocopied, reproduced, or translated
without prior written consent of Snap-on
1
Passenger Tire Changers Service Manual 07-13 Rev.B

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  • Page 1 PASSENGER TIRE CHANGERS SERVICE MANUAL DO NOT COPY NOR DISTRIBUTE No part of this document may be photocopied, reproduced, or translated without prior written consent of Snap-on Passenger Tire Changers Service Manual 07-13 Rev.B...
  • Page 2 B L A N K P A G E Passenger Tire Changers Service Manual 07-13 Rev.B...

  • Page 3: Table Of Contents

    TABLE OF CONTENTS CHAPTER 1 INTRODUCTION Pag. General Pag. CHAPTER 2 TOOLS AND SAFETY Pag. Tools and special tools required Pag. Important safety instructions Pag. Electrical safety precautions Pag. CHAPTER 3 AC/DC POWER DISTRIBUTION Pag. Lockout and/or tagout system procedure Pag.
  • Page 4 Gear box: check and replacement Pag. Turntable jaws: Check, replacement and adjustment Pag. CHAPTER 8 TROUBLE SHOOTING Pag. Passenger Tire Changers Service Manual 07-13 Rev.B...

  • Page 5: Chapter 1 Introduction

    CHAPTER 1 INTRODUCTION 1.1 GENERAL This Service Manual describes maintenance, check and repair operations of the passenger tire changer under Hofmann, John Bean and Boxer brands and is for use of qualified and trained personnel only. Keep this manual constantly updated, by adding Service Bulletins related to the tire changers. IMPORTANT! The identification data of each machine are printed on a adhesive label attached to the cabinet of the machines.
  • Page 6 Ring to adjust the turntable run out and the rim contact # 0013549: Use the ring to adjust the turntable run out and to check the proper contact of the jaws to the rim. Electronic dynamometric key. Use this key to lock the potentiometer set screw with proper torque. Air pressure reducer # 4002916.

  • Page 7: Important Safety Instructions

    Gauge with magnetic basement: Use this gauge to check the run out of the turntable. 2.2 MPORTANT SAFETY INSTRUCTIONS The units are CE or UL approved, but whenever using this equipment basic safety precautions should always be followed, including the following: Read all instructions.

  • Page 8: Chapter 3 Ac/Dc Power Distribution

    CHAPTER 3 AC/DC POWER DISTRIBUTION 3.1 LOCKOUT AND/OR TAGOUT SYSTEM PROCEDURE 1. Notify all affected employees that a lockout or tag-out system is going to be utilized and why. The authorized employee should know the electrical power the machine uses and it’s hazards. 2.
  • Page 9 230 VAC (suitable for 200-250V range). The machines can be equipped with 50 or 60 Hertz motors. • On machines with normal electric reversing switch, the AC power supply, (+/-10% compared to the nominal one) is directly supplied to the switch. •...
  • Page 10 INVERTER SWITCH S1 The inverter switch S1 controls the rotation and the speed of the turntable motor. There are single phase, 3 phase, single speed switch and 3 phase 2 speed switch. TURNTABLE MOTOR M1 On inverter switch models it can be single or 3 phase, single speed or 2 speed.

  • Page 11: Chapter 4 Electric Section

    CHAPTER 4 ELECTRIC SECTION WARNING! BEFORE APPROACHING THE ELECTRIC PARTS OF THE MACHINE, DISCONNECT THE MACHINE FROM ELECTRIC SUPPLY Very often electric failures are only caused by loosened wires or connectors not well fitted. Therefore it is VERY IMPORTANT BEFORE STARTING WITH ANY CONTROL AND/OR REPLACEMENT VERIFY IF ALL WIRES AND CONNECTORS ARE WELL FITTED.
  • Page 12  Remove the disc acting with a screwdriver on the side tabs  Loose the screws and remove the frame switch.  Take the switch out from the inverter box.  Check wires continuity from power supply plug to main switch wires terminals. ...
  • Page 13 4.2 POWER SUPPLY CABLE ON INVERTER SWITCH: CHECK AND REPLACEMENT  : 1h  : Allen keys of 6mm, 7,8,13mm tube type key, medium cross screwdriver, pliers, multimeter.  : Defective power supply cable and plug may cause the following malfunction: 1.
  • Page 14  Unscrew the screws that hold the switch to the bracket and remove the switch from the bracket.  Remove the protection from the switch and disconnect the wires L1, L2 and L3 from the terminals and from the plug. ...

  • Page 15: Inverter Switch S1: Check And Replacement

    IMPORTANT! USE ONLY APPROVED CABLES, PLUGS. GROUND WIRE MUST BE LONGER THAN THE OTHER ONES.  Fix new faston on inside cable ends and connect them to the switch terminals and to the plug.  Place the rubber protection on the switch. ...

  • Page 16: Turntable Motor M1 Cable: Check And Replacement

    replaced. TO REPLACE THE SWITCH:  Check that the tabs for contacts on the new switch are correctly oriented.  Connect wires ends FIRMLY to the new switch terminals as shown in the appropriate electric diagram.  Mount the switch to the electronic box 4.1. ...

  • Page 17: Turntable Motor M1And Belt :Check And Replacement

     Remove the motor terminals cover and disconnect all wires from terminals.  Select the multimeter in Ohm and check if there is continuity between ends of each wire.  Cross the wire check to make sure that wires are not in short circuit.
  • Page 18 TO CHECK THE MOTOR WHEN IT IS NOISY:   Disconnect power supply from the wall.  Remove the side panel to access to the motor 4.4.  Unscrew the 8mm nuts to get motor loose.  Turn the front nut to move the motor support and loose the belt. ...
  • Page 19  If there is continuity on all 3 phases replace the motor. TO REPLACE THE MOTOR:  Place some piece of woods under the motor to avoid any dangerous falling on the foot pedal assembly. The top one should be longer in order to be used to lift the motor during the mounting. ...

  • Page 20: Chapter 5 Electronic Section

    CHAPTER 5 ELECTRONIC SECTION WARNING! BEFORE APPROACHING THE ELECTRONIC PARTS, DISCONNECT THE MACHINE FROM POWER SUPPLY. 5.1 INVERTER T1: CHECK AND REPLACEMENT  : 1h  : Voltmeter, 3mm allen key, 8mm tube type key, pliers.  : Defective inverter may cause the following malfunction: Motor does not turn at all.
  • Page 21  Mount the new inverter.  Connect all wires to the terminals following the correct order.  Connect the machine to the power supply.  Turn the machine on and check if it works fine.  Turn the machine off. ...

  • Page 22: Inverter T1: Firmware Update

    5.2 INVERTER T: FIRMWARE UPDATE  : 2h  : 3mm allen key, 8mm tube type key, pliers, medium cross screwdriver, Note book PC. Inverter firmware update kit WARNING: The PC used to program the inverter and the inverter can’t be connected both to the mains, follow the admitted connection below.
  • Page 23 Software installation. Use the programming software included in the memory stick inside the kit. The stick contain 2 different programming software (don’t use CD): • Pickit 2 v.2.61 (Quik to install and easy to use) • MPLAB 8.91 (More complete, but more complex to install and to use).
  • Page 24 will be on the desktop. At the end of the installation a icon Programmer connection a) Connect the programmer to the USB port, and the programming cable as shown below. WARNING: the blue connection must be inserted in the programmer connection marked with a small triangle.
  • Page 25 c) With File -> Import menu, load hex file as shown below. The last revision of firmware (hex file) will be sent by e-mail. Passenger Tire Changers Service Manual 07-13 Rev.B...
  • Page 26 d) Push the Write button to start the update procedure: At the end a success message is shown (green window). e) Switch off the power and remove the programming cable. Update firmware wit MPLAB a) Start programming software with icon. b) With File ->...
  • Page 27 c) With Configure -> Configuration Bits… check the box Configuration Bits set in code d) With Configure -> Select Device chose 18F2331 (device to be programmed). Passenger Tire Changers Service Manual 07-13 Rev.B...
  • Page 28 e) With Programmer -> PICkit 2 chose the programmer. g) Switch on the power to the board. The programming icons become active. g) Click on the programming icon (first at left) and wait for a finish message on the window. g) Switch off the power and remove the programming cable.

  • Page 29: Turntable Potentiometer: Check And Replacement

    5.3 TURNTABLE POTENTIOMETER: CHECK AND REPLACEMENT  : 1h.  : 2,5, 3, 4 and 5mm Allen Key, 10 and 13mm end key, 8 and 10mm tube type key, 13mm socket, medium standard screwdriver, Multimeter, electronic dynamometric key.  : Defective potentiometer may cause the following malfunction: Turning the machine on the turntable turns itself with rotational pedal in rest position.
  • Page 30  Unscrew the inverter box from the cabinet.  Disconnect the potentiometer connector from the Inverter.  Remove the protection from the potentiometer.  Take the multimeter and select Ohm.  With the rotational pedal in rest position, place the multimeter terminals on CCW and CW terminals of the potentiometer: the multimeter display should show 20KOhm.
  • Page 31  Place the multimeter terminals on CCW and PX terminals of the potentiometer: pushing the rotational pedal upward the value should change constantly.  Place the multimeter terminals on CW and PX terminals of the potentiometer: pressing the rotational pedal downward the value should change constantly.
  • Page 32  Remove the nut from the potentiometer to release it.  Install the new potentiometer: make sure to mount it with anti-rotational pin into the slot in the bracket.  Tight the nut at 1,65Nm.  Connect the potentiometer to the Inverter. ...
  • Page 33 5.4 POTENTIOMETER ADJUSTMENT WITH FIRMWARE 1.4.5  : 1h.  : 2,5, 3, 4mm Allen Key, 10 and 13mm end key, 8 and 10mm tube type key, 13mm socket, medium standard screwdriver, Multimeter, electronic dynamometric key.5mm Allen. Procedure to calibrate the “zero” of the potentiometer: Disconnect air pressure and power supply from the machine.

  • Page 34: Chapter 6 Pneumatic Section

    CHAPTER 6 PNEUMATIC SECTION 1 PNEUMATIC FUNCTION The pneumatic section is related to all those functions and devices controlled by air pressure. The working pressure required by machine to work properly must be from 8 to 12 bar and it is reported on the sticker label.

  • Page 35: Air Filter - Lubricator Assy: Check And Replacement

    6.2 AIR FILTER – LUBRICATOR ASSY: CHECK AND REPLACEMENT  : 30’  : Allen key 3mm, 8 and 13mm end key, medium standard screwdriver.  : Defective air filter lubricator assembly may cause the following malfunction: 1. Air leaking. 2.

  • Page 36: Tilting Post Cylinder: Check And Replacement

    TO REPLACE THE GLASSES:  Disconnect the air pressure from the machine.  Turn counter clockwise the glass to remove it from the assy.  Take the new glass and tighten it. IMPORTANT! BEFORE TIGHTENING THE LUBRICATOR GLASS, FILL IT WITH THE RECCOMENDED OIL ONLY AS REPORTED ON THE USER MANUAL AND ON DEDICATED TAG.
  • Page 37  Connect the air pressure.  Position the cylinder where it leaks air.  Check if the leaking is in between cylinder flange-cylinder liner or if it is coming from the piston rod.  In case of need, place some soap with water on the interested part to better see where the leaking is coming from.
  • Page 38  Remove the cotter pin and then slide off the pin from the cylinder.  Unlock the cylinder bolt with the end screw of 17 and the socket of 17mm and remove the screw to release the cylinder.  Take out the cylinder and disconnect the air pipes. ...

  • Page 39: Vertical Rod Blocking Cylinder On 26" : Check And Replacement

     Place the cylinder in its place and hold it from the piston rod while installing the screw in the bottom.  Lock the bottom screw with the self locking nut. Tighten the nut ‘till the screw thread will exit from the nut. ...
  • Page 40  Disconnect the air pressure and the power supply.  Disconnect the air pipes from the cylinder.  Unlock the adjustment screw over the cylinder head and turn it until it will out of the blocking plate range.  Remove the washer from the cylinder. ...
  • Page 41  Install the two front adjustment screws and turn them until end of stroke.  Then turn them back of two turns.  Block the counter nuts.  Install the two screws with springs. Tighten them for about 10mm  Tighten the cylinder adjustment screw: when the screw will touch the washer turn the screw of two more turns.
  • Page 42  Remove the pipes guide and check if the air is leaking in between pipes and fittings.  In case of air leaking in between pipes and fittings, disconnect the air pressure, remove the pipes from the fitting and cut a piece of pipe to renew its end. ...
  • Page 43  It is also possible that cylinder is leaking air through the fixing screw underneath the arm. TO REPLACE THE CYLINDER  Disconnect the air pressure from the machine  Cut the stripe and disconnect the air pipes.  Remove the screw underneath the arm to release the cylinder. ...

  • Page 44: Horizontal Blocking Cylinder On 26": Check And Replacement

     Belt the air pipes to the fitting of the cylinder.  Mount the plastic guide.  Mount the cover.  Connect the air pressure and check if the machine works fine. 6.6 HORIZONTAL BLOCKING CYLINDER ON 26”: CHECK AND REPLACEMENT ...
  • Page 45 TO CHECK THE CYLINDER  Disconnect the air pressure from the machine  Remove the rear cover to access to the cylinder. According to the model the cylinder will be install in different configuration.  Check where the cylinder is leaking. TO REPLACE THE CYLINDER ...
  • Page 46  Slide off the horizontal arm until the blocking plate is free and then remove blocking plate and releasing spring.  On some models it is required to remove the rear screws with the springs and the washer in between cylinder and adjustment screw before sliding off the blocking plate.
  • Page 47  Disconnect the air pipe. In case of air leaking in between pipes and fittings, cut a piece of pipe to renew its end and then mount the cylinder again.  Connect the air pipe to the new cylinder.  Place the cylinder on its side of the tilt post by pressing it in the middle with a finger.
  • Page 48  On some other models the flaring must be oriented towards springs.  When the locking plate is place, with the right hand slide in gently the horizontal arm until to hang up the plate.  Place the releasing spring. Enter the spring by hand inside of the post and hold it. ...

  • Page 49: Vertical Rod Lift Cylinder: Check And Replacement

     On models with two springs adjust the position of the springs in order to center it with hole in the blocking plate and then install the screws  Place the washer, where available, in between the cylinder and screw and slide in gently the horizontal arm to complete the assembly.

  • Page 50: Valve With Yellow Button: Check And Replacement

    TO CHECK THE CYLINDER:  Pull the yellow button of the valve to allow the lifting of the vertical rod.  Check if the cylinder is leaking air. TO REPLACE THE CYLINDER:  Disconnect the air pressure and the power supply. ...
  • Page 51  Check if there is air leaking from the valve fittings or the valve rod. TO REPLACE THE VALVE:  Disconnect the air pressure and the power supply.  Remove the handles  Disconnect the air pipes from the valve. ...

  • Page 52: Handle With Valve: Check And Replacement

     Connect the air pipes to the valve.  Mount the handles.  Connect the air pressure and the power supply.  Check the machine works fine.  Mount the cylinder cover. 6.10 HANDLE WITH VALVE: CHECK AND REPLACEMENT  : 30’...

  • Page 53: Automatic Tool Cylinder: Check And Replacement

    TO REPLACE THE HANDLE WITH VALVE  Remove the pipes from the valve.  Remove the securing screw from the handle.  Push the handle downward to remove it from the arm.  Take the new handle with valve and remove the tape that hold the valve components inside of the handle. Once removed the tape make sure to do not lose any valve component.
  • Page 54  In case of need, place some soap with water on the interested part to better see where the leaking is coming from. TO CHECK THE FITTING AIR LEAKING  Position the cylinder where it leaks air.  Check if the leaking is in between the fitting and the cylinder flange. ...

  • Page 55: Automatic Tool Cylinder Valve: Check And Replacement

     Check if the machine works fine. 6.12 AUTOMATIC TOOL CYLINDER VALVE: CHECK AND REPLACEMENT  : 30’  : 3mm allen key,5,5 and 22mm end key.  : Defective valve may cause the following malfunction: 1. Air leaking from the valve. 2.

  • Page 56: Bead Breaker Cylinders: Check And Replacement

     Connect the pipes.  Secure the valve with the nut and mount its knob.  Plug in the air pressure and power supply.  Check if the machine works fine again. 6.13 BEAD BREAKER CYLINDER: CHECK AND REPLACEMENT  : 30’...
  • Page 57 TO REPLACE THE CYLINDER:  Leave the cylinder in rest position.  Remove the seeger ring and the nut.  Disconnect the air pressure.  Disconnect the air pipes.  Unscrew the two securing screws that hold the cylinder.  Remove the defective cylinder.

  • Page 58: Turntable Cylinders: Check And Replacement

     Install front air pipe to the new cylinder and install in the cabinet.  Fix the cylinder with the two securing screws to the cabinet.  Connect the air pipes.  Connect the air pressure.  Tighten the nut. ...
  • Page 59 TO CHECK THE CYLINDER WHEN THERE IS AIR LEAKING THROUGH THE VALVE.  Disconnect the hose without air pressure from the cylinder  If the air pressure is getting out from the fitting, the cylinder leaks through the piston.  If the air pressure is getting out from the hose, the leaking could be caused by the manifold revolving or the by the valve.

  • Page 60: Manifold Revolving: Check And Replacement

     Release the air pipes from the cylinder  Disconnect the air pipes from the cylinder.  Unscrew the nuts that secure the cylinder to the bracket and then remove the washer.  Install the new cylinder and secure it with washer and nut. ...
  • Page 61 TO CHECK THE AIR LEAKING FROM THE FITTINGS  Place the turntable cylinders where there is the air leaking.  Check if there is any air leaking from the under pressure. TO CHECK THE INNER AIR LEAKING  Disconnect the hose without air pressure from the cylinder ...
  • Page 62  Sign the cylinder in conjunction of that one of the manifold. In order to install the manifold in same place and avoid to reverse the open/close motion of the jaws.  Unlock the turntable from the gearbox hammering the plate with a rubber hammer. ...
  • Page 63  Extract the manifold from the support and replace the O rings.  Make sure that the holes on the bracket are not sharp to avoid any possible damaging of the O ring during the assembly.  Lubricate the O rings and the bracket with white grease. ...

  • Page 64: Foot Pedal Assembly Valves: Check And Replacement

     Place the turntable on the gearbox. IMPORTANT! MAKE SURE TO DO NOT CRUSH PIPES.  Secure the turntable with the screw and Loctite.  Place the O ring and the plastic cover.  Connect the pipes to the manifold. ...

  • Page 65: Wheel Lift Cylinder: Check And Replacement

    TO REPLACE THE VALVE:  Disconnect the air pressure from the machine  Disconnect the air pipes.  Remove the four screws to have the get the valve dismounted.  Mount the new valve.  Connect the air pipes.  Plug the machine to the air pressure and to the power supply.
  • Page 66  Position the cylinder where it leaks air.  Check if the leaking is in between cylinder flange-cylinder liner or if it is coming from the piston rod.  In case of need, place some soap with water on the interested part to better see where the leaking is coming from.

  • Page 67: Wheel Lift Valve: Check And Replacement

     Take the new cylinder fix it to the lift with pins and seeger rings.  Install the pipes to the cylinder.  Connect the air pressure to the machine.  Check if the lift works fine. 6.18 WHEEL LIFT VALVE: CHECK AND REPLACEMENT ...

  • Page 68: Mh Cylinder: Check And Replacement

    6.19 MH CYLINDER: CHECK AND REPLACEMENT  : 30’  : medium cross screwdriver, end key 19mm, allen key 8mm  : Defective cylinder may cause the following malfunction: Air leaking. Low bead pushing pressure. Cylinder slides down itself. TO CHECK THE MH CYLINDER: ...

  • Page 69: Mh Cylinder Control Valve: Check And Replacement

     Install the new cylinder  Plug in the pipes  Connect the air pressure and check if it works fine again.  Mount the plastic cover 6.20 MH CYLINDER CONTROL VALVE: CHECK AND REPLACEMENT  : 30’  : End key 5 and 22mm, Allen key 3mm. ...

  • Page 70: Bead Inflating Valve: Check And Replacement

    6.21 BEAD INFLATING VALVE: CHECK AND REPLACEMENT  : 1h  : Medium flat screwdriver, 8,10 and 13mm end key.  : Defective inflation spool valve may cause the following malfunction: Air leaking. No inflating action. Air leaking from the blaster jet. TO CHECK THE SPOOL VALVE: ...
  • Page 71  Take the defective valve assy out and bolt the new one.  Install the first nuts, red arrow hand, by hand ‘till to eliminate any axial motion of the valve rod. Then mount all other nuts without lock them and the linkage. ...

  • Page 72: Bead Blaster Valve And Air Tank: Check And Replacement

    6.22 BEAD BLASTER VALVE AND AIR TANK : CHECK AND REPLACEMENT  : 1h  : End key 12mm, big pliers.  : Defective bead blaster valve may cause the following malfunction: No air from air jet. Air leaking from diaphragm. TO CHECK THE BEAD BLASTER VALVE: ...
  • Page 73 6.24 MONOMETER: CHECK AND REPLACEMENT  : 30’  : End key 13, 14,15,16.17mm, Medium cross screwdriver, loctite.  : SB 852 TC, SB 929 TC,  :Defective manometer may cause the following malfunction: 1. The manometer is not accurate. 2.
  • Page 74  sintered air filter absorber # 0019181 and check if the manometer returns to zero. Remove the  If the manometer return to zero replace the air filter absorber only.  If the manometer does not return to zero, replace the manometer. TO REPLACE THE MANOMETER ...

  • Page 75: Spiral Pipes: Check And Replacement

     Fix the new manometer to the bracket with nipples fitting. Make sure that the washer will remain in the middle. Put just one drop of Loctite to seal.  Tighten the sintered air filter absorber # 0019181, also with one drop of Loctite, to nipples fitting. ...
  • Page 76 TO REPLACE THE SPIRAL PIPES:  Disconnect the air spiral pipes from the cylinders and the fittings.  Remove the side panel from the machine.  Disconnect the air pipe from inside of the cabinet.  Release the pipe strain relief and remove them from pipes protection. Then remove the protection from the bracket.
  • Page 77  Secure the pipes tightening the strain reliefs.  Slide in and out the arm to make sure that pipes are moving inside of their protection.  Mount the plastic covers of the cylinders. Passenger Tire Changers Service Manual 07-13 Rev.B...

  • Page 78: Mechanical Section

    CHAPTER 7 MECHANICAL SECTION 7.0 MECHANICAL SECTION The mechanical section is connected to the centerpost, the tool and to the bead breakers adjustments. Usually this parts do not require the replacement and in any case their replacement is required after years of intensive working. 7.1 TILTING POST ADJUSTMENT: CHECK AND REPLACEMENT ...
  • Page 79  Move the tower from the handle of the horizontal arm and check the play in between tower and support. If the tilting post will move tighten the two self - locking nuts at 90Nm / 66,4Lbft until to have removed completely the play.

  • Page 80: Automatic Tool: Check, Replacement And Adjustment

     Take a piece of paper and place it where the adjustment screw should work on the cabinet. Tilt forward the tower and pull the paper to verify if the end stroke screws are touching the cabinet.  If one of the screws does not touch the cabinet, unlock the related counter nut and, using a screwdriver, unscrew the screw until it will touch the cabinet.
  • Page 81  Loosen the screw underneath the tool and the two lateral set screws.  Unlock the tool with the rubber hammer  Remove completely the screws to complete the tool dismounting.  Take the new tool and mount it to the vertical rod. Tighten all screws so that the tool is not rigidly locked in place but can turn through a small sector relative to the support hub.
  • Page 82  Tighten one of the two adjuster screws until the tail of the tool is aligned to the rim edge.  Tighten both screws, keeping the tool in this position.  Move the tool away from the edge of the rim, then tighten the screw under the tool fully home. TO ADJUST THE TOOL FINGER STROKE ON THE CONTROL CYLINDER: ...
  • Page 83 TO ADJUST THE VERTICAL TOOL CLEARANCE:  Block a 17” rim diameter rim in good condition to the centre post.  Unlock the front screws and tighten all way down and then turn them backward of two turns each one. ...
  • Page 84  Block the vertical rod.  Check if the spring are completely compressed.  If they are completely compressed, turn the screws back until to see some light in between of the every wire of the spring.  Check if the machine works fine. ...

  • Page 85: Standard Tool: Check, Replacement And Adjustment

     Unlock the 6mm counter nuts  Tighten as much as possible the horizontal blocking cylinder adjustment set screws in order to block the arm.  Turn counter clockwise both set screws at ½ turn every step until the horizontal arm will move smoothly again. ...
  • Page 86  The tool may result with the tail too inward or too outward compared to the rim edge. TOO INWARD TOO OUTWARD  Tighten one of the two adjuster screws until the tail of the tool is aligned to the rim edge. ...
  • Page 87  Place the tool on the rim, as normal operation, and then lock it.  Make sure that the clearance between plastic protection and rim is 1mm.  If the clearance is higher, release the arm, unlock the screws and tighten them accordingly. Then lock the screws again.
  • Page 88  Tighten as much as possible the vertical blocking cylinder adjustment screw in order to block the rod.  Slide the yellow button valve all towards the operator in order to lift the vertical tool rod.  Turn counter clockwise the vertical blocking cylinder adjustment screw until the vertical rod will move upward.
  • Page 89  Block a 17” rim diameter rim in good condition to the turntable.  Unlock the horizontal arm.  Unlock the rear screws and tighten them all way in. Then turn them backward of two turns each one.  Lock the counter nuts. ...
  • Page 90  Place the tool on the rim, as normal operation, and then lock it.  Make sure that the clearance between plastic protection and rim is 1mm.  If the clearance is higher, release the arm, unlock the screws and tighten them accordingly. Then lock the screws again. ...
  • Page 91  Block a 17” rim diameter rim in good condition to the turntable.  Unlock the horizontal arm.  Unlock the rear screws and tighten them all way in. Then turn them backward of one turn each one.  Lock the counter nuts. ...

  • Page 92: Horizontal Arm Rollers: Check And Adjustment

     Press the yellow button to lock the arm.  Unlock the two counter nut and make sure that both screws are touching the blocking plate. Then lock again the counter nuts firmly.  Lock and unlock the arm some times to make sure that it will work fine. ...
  • Page 93 7.5 GEAR BOX: CHECK AND REPLACEMENT  : 2h  : End keys 8,10,13,17mm, socket 24mm, Seeger pliers.  : Incorrect gearbox may cause the following malfunctions: 1. Noisy rotation. 2. Low rotation torque. 3. Oil leaking. TO CHECK GEARBOX: ...
  • Page 94 TO REPLACE THE JAW  Open the jaws completely.  Unscrew the bolt with the eccentric without remove it completely  Remove the screw that hold the jaw, then remove the screw with the eccentric to have the jaw free. ...
  • Page 95  Position the eccentric spacer beneath the bolts so that the alignment marks on the eccentric spacers are all pointed at 90°to the jaw. Insure that the positioning marks are identical to each other in relative positioning.  Tighten the bolts while maintaining individual eccentric spacers positioning.
  • Page 96  Moving the eccentric spacers towards the outside of the turntable, the clamps will move toward the centre of the turntable.  Remove the gauge with magnetic base from the vertical hex bar.  Take a piece of paper and make sure that all 4 clamps should contact at the rim equally during the clamping operation.
  • Page 97 CHAPTER 8 TROUBLE SHOOTING SECTION COMPLAINT 1: Pressing the rotational pedal, the turntable does not turn in any direction, in one direction only or in second speed only.. Check the power supply at the wall. Check the power supply plug and fuses on the wall Check the power supply cable Check the rotary switch.
  • Page 98 Call Snap On Hot Line Centre COMPLAINT 13: The MH arm does not have force. Check airline pressure inlet. Check the air pressure outlet. Check the air filter –lubricator assembly. Check the MH cylinder. Check the MH valve. Call Snap On Hot Line Centre COMPLAINT 14: The automatic tool does not lift the tire bead.
  • Page 99 UPDATING GUIDE: REVISION A – June 2013 ________________________________________________________________________________________ ____________________________________________________________________________________________ REVISION B – July 2013 Inverter T1: Firmware update 8Updated) Pag. 6.24 Manometer: check and replacement (New) Pag. 6.25 spiral pipes: check and replacement (New) Pag. Passenger Tire Changers Service Manual 07-13 Rev.B...
  • Page 100 AUTHOR: Stefano Muzzioli Copyright statement This manual and the materials contained within are copyright protected. The manual, or any section, page, drawing, or diagram, may not be reproduced by any means without the written consent. The information and specifications in this manual are based on the latest information available at the time of publication. We reserve the right to change the specifications at any time without notice.

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