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Hofmann monty 3300-26 Service Manual

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  • Page 1 monty 3300-26 Service Manual...
  • Page 2 B L A N K P A G E...

  • Page 4: Table Of Contents

    TABLE OF CONTENTS INTRODUCTION GENERAL TOOLS AND SAFETY TOOLS AND SPECIAL TOOLS SAFETY GENERAL SAFETY RULES GENERAL PRECAUTION AND INSTRUCTION TSS INFO HUB APPLICATION INTRODUCTION CONNECTION TO THE MACHINE VIA BLUETOOTH® CONNECTION ACCESS WITH CREDENTIALSS (LOGIN) OFF-LINE NETWORKING OPERATION SETTING OF THE COUNTRY CODE GEOGRAPHICAL ALLOCATION AC/DC POWER DISTRIBUTION AC THEORY OF OPERATIONS...
  • Page 5 TOOL ADJUSTMENTS: VERTICAL CLEARANCE TOOL ADJUSTMENTS: HORIZONTAL CLEARANCE HORIZONTAL ARM ROLLERS: CHECK AND ADJUSTMENT GEAR BOX: CHECK AND REPLACEMENT TURNTABLE JAW: CHECK, REPLACEMENT AND ADJUSTMENT TROUBLE SHOOTING SECTION...

  • Page 7: Introduction

    1. INTRODUCTION GENERAL This Service Manual describes maintenance, check and repair operations of the passenger tire changer 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 an adhesive label applied to the machine frame.

  • Page 8: Tools And Safety

    2. TOOLS AND SAFETY TOOLS AND SPECIAL TOOLS To repair and/or check this tire changer, the following standard tools are required: Keys : 6mm to 30mm Tube type keys : 7mm to 17mm Allen keys : 2.5 mm to 12 mm Socket keys : 10mm to 27mm Allen socket keys...
  • Page 9 Air pressure reducer # EAA0348G92A. Use this reducer to adjust the tilting post end stroke screws and the turntable jaws. Cable control potentiometer # EAW0287G69A Use this tool check and calibrate the potentiometer. Dynamometric key: Use this key to lock the screws with the proper torque. Gauge with magnetic basement: Use this gauge to check the run out of the turntable.

  • Page 10: Safety

    Straight metal ruler on which to mark two reference lines as shown in the below pictures: PULLEY 2 SPEED: Mark a line at 1.5mm from the edge. PULLEY 1 SPEED: Mark a line at 2mm from the edge. Dynamometric key. - 2 Hex wrenches 13 mm.

  • Page 11: General Safety Rules

    GENERAL SAFETY RULES The machine must be used exclusively in the fields and according to the methods indicated in the documents. In case of problems during machine operation, immediately disconnect power supply, before any other action. In general, any intervention on the electrical system, such as connection of a plug or replacement of cables, when required, must be carried out by qualified electricians in compliance with the relevant national laws and regulations in force for the specific structure on which the operation is performed.

  • Page 12: Tss Info Hub Application

    3. TSS INFO HUB APPLICATION INTRODUCTION The TSS Info Hub App is an instrument that allows the technician to access the following services with a mobile device: ➢ Consulting technical documents (spare parts and accessories booklet, use and repair manuals, troubleshooting).

  • Page 13: Access With Credentialss (Login)

    Open the TSS Info Hub application and from the “Home” tap; > Via Bluetooth > Select the machine model of interest > Enter The communication status icon will indicate, connection Bluetooth® enable. > Touch the icon to exit. The connection device has a RED LED upon startup. The connection device has a RED LED when starting up and a GREEN LED when connected.
  • Page 14 2. Users with ID and Password can Login by touching the MAIN MENU (green box) or touch the back Wi-Fi icon on the top right (yellow box). NOTE: Touch the black Wi-Fi icon to access directly to Login without going through the MAIN MENU. 3.
  • Page 15 ATTENTION: In this condition, the following functions are not available: - Documents. - Software management. - Reporting issues. ➢ If you select an activity that is not available, the no network connection window is displayed. IMPORTANT! Each time that the password is changed, step 3 must be repeated to re-enable the OFF-LINE mode.

  • Page 16: Setting Of The Country Code

    SETTING OF THE COUNTRY CODE > Tap Country Regulation to set the country where the machine is installed. > Tap Select New Country Code (a) and select the country. > Tap Set Country Code (b) to confirm the selection. Note: The button Enable Custom (c) allows to addition a country code non available in the list.

  • Page 17: Ac/Dc Power Distribution

    4. AC/DC POWER DISTRIBUTION AC THEORY OF OPERATIONS Always use the “One Hand Rule” when working with AC voltages by keeping one hand in your pocket or behind your back. Before removing the cables from the tyre changer, disconnect the AC power supply cable from the electrical socket.

  • Page 18: Layout Of The Connectors

    The electronic Inverter manages the following functions: Supplies 230VAC / 3 Phases to the centerpost motor M3. It detects the position of the gear motor with the proximity sensor. Manages the torque and the speed of the centerpost motor. It communicates with the connection unit. LAYOUT OF THE CONNECTORS INPUT POWER SUPPLY AC2/3...
  • Page 19 ARRANGEMENT AND FUNCTION OF THE LEDS LD20 ON Potentiometer in standby position LD20 OFF Potentiometer NOT in standby LD14 Pilot LED position LD22 ON Errore saved LD22 OFF No error saved LD12 Power supply LED LD9 – LD10 Connection unit LD11 ON Communicating proximity communication LED...

  • Page 20: Dc Theory Of Operations

    There is a hole in the inverter support used to check the adjustment of the potentiometer and the eventual error state. LD20 ON Potentiometer in standby position LD20 OFF Potentiometer not in standby LD22 ON Error saved LD22 OFF No error saved MOTOR M1 It is 3 phase, single speed, 0.9kw motor and must be wired at triangle.

  • Page 21: Stop Button

    STOP BUTTON: The stop button disables all the electric and electronic functions of the tire changer as soon as it is pressed. It is normally closed. The electronic inverter will be re-enabled only if the potentiometer is operating and if the rotation pedal is in the standby position for at least 3". This STOP key is not included on machines for North America.

  • Page 22: Electric Section

    5. ELECTRIC SECTION 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 TO CHECK IF ALL WIRES AND CONNECTORS ARE WELL FITTED. POWER SUPPLY CABLE AND PLUG: CHECK AND REPLACEMENT ...

  • Page 23: Turntable Motor M1 Cable: Check And Replacement

    ▪ Check wires continuity from power supply plug to main connector wires terminals. ▪ Cross the wire check to make sure that any wire in short circuit. IMPORTANT! TO CHECK GROUND (YELLOW/GREEN) WIRE, DISCONNECT THE WIRE END FROM THE TERMINALS. TO REPLACE THE CABLE: ▪...
  • Page 24 TO CHECK THE CABLE TO THE INVERTER: ▪ Disconnect the machine from the power supply. ▪ Remove the side panel from the cabinet to access to the motor M1 5.1. ▪ Disconnect the motor connector from the Electronic Inverter using the small flat screwdriver and the sheath ground from the cabinet ▪...

  • Page 25: Turntable Motor M1 And Belt: Check And Replacement

    ▪ Mount the motor terminal cover. IMPORTANT: WHEN REMOUNTING THE MOTOR TERMINALS COVER BE CAREFUL TO DO NOT CRUSH THE WIRES. ▪ Connect the machine to the power supply and check if it works fine. ▪ Disconnect the machine from the power supply.
  • Page 26 ▪ Turn the front nut to move the motor support and loose the belt. ▪ Use a screwdriver in between pulley and belt and rotate the pulley to remove the belt. ▪ Place a screwdriver through the fan protection and turn the motor pulley by hand to make sure that the fan is well blocked to the motor shaft.
  • Page 27 Measure the distance from the motor feet to the edge of the bracket (the measure of the picture is just an example) and write it. Remove the motor from its support. Take the new motor. Install the pulley by using rubber hammer. NOTE: The mounting of the new pulley must be done very carefully to avoid motor bearings damaging.
  • Page 28 Loosen the motor fixing screws. m. Move the motor to compensate the difference measured among the gearbox pulley and the steel ruler. Equalize the distances of the feet motor with the bracket (See point “e”). Tighten the motor screws firmly and then make sure that the alignment is unchanged. Mount the motor assembly helping yourself with the longer wood to fix it to the cabinet.
  • Page 29 Tighten the nut of the belt tensioner Place the washer and the nut by hand until to reach the torque settled. Tighten the inner nut Screw the counter nut...

  • Page 30: Power Supply Cable And Plug On North America Version: Check And Replacement

    Hold in position w\o tightening Tighten firmly Connect the machine to the power supply. Activate the motor rotation and check that there is no belt slip. ▪ Check the rotation way of the motor: If it is wrong reverse only two motor wires. ▪...
  • Page 31 ▪ Remove the cover of the inverter box and disassemble the switch 5.5. ▪ Disconnect the cables U/T1 and V/T2 from the switch. ▪ Check the continuity of the cables from the power supply plug to the end of every cable. ▪...

  • Page 32: Main Rotary Switch Q1 For Noth America Version: Check And Replacement

    ▪ Cross the wire check to make sure that any wire in short circuit. IMPORTANT! TO CHECK THE GROUND CABLES (YELLOW/GREEN), DISCONNECT THEM FROM THE TERMINAL BOARD OF THE GROUND CABLES. POWER SUPPLY CABLES REPLACEMENT: ▪ Disconnect the power supply cables from the plug and from the switch. ▪...
  • Page 33 ▪ Disconnect the power supply connector from the inverter and remove the switch. ▪ Disconnect all wires from the main switch and remove it with a screwdriver. Turn switch to “Off”. Check that there is no continuity ( =infinity) between any terminals U/T1 - V/T2 - R/L1 and ▪...

  • Page 34: Electronic Section

    6. ELECTRONIC SECTION INVERTER T1: CHECK AND REPLACEMENT  : 1h  : Defective inverter/potentiometer may cause the following malfunction: 1. Motor does not turn at all. 2. The shut off switch of the tire shop shuts off. 3. Motor turns in slow speed only 4.
  • Page 35 Check the motor. Check if the gearbox can rotate without belt by hand freely. 5. THE TURNTABLE ROTATES PRESSING THE PNEUMATIC MOVEMENTS PEDALS. Check if the potentiometer is adjusted correctly at 2.6VDC and that the LED is on with the rotation pedal in the standby position.
  • Page 36 ▪ If there is no user interface, check directly if the LD20 LED on the board is on, as described in the steps below. ▪ Check through the inspection hole of the inverter support that the green LED is on when the rotation pedal is in the standby position.
  • Page 37 DANGER! WAIT 4’ BEFORE WORKING ON THE INVERTER AS ITS CAPACITORS MUST BE FULLY DISCHARGED. THE GRADUAL REDUCING OF THE LIGHT EMITTED BY THE LED LD5 WILL SHOW THE COMPLETE DISCHARGING OF THE CAPACITORS. WORKING ON THE INVERTER EARLIER THAN THE TIME RECOMMENDED, THERE WILL BE THE SERIOUS RISK TO UNDERGO AN ELECTRIC SHOCK OF 300VDC ▪...

  • Page 38: Turntable Potentiometer: Check And Replacement

    IMPORTANT! DO NOT scan the QR code of the user interface. ▪ Execute the “Panel/Box Replacement” function. ▪ The LED of the connection unit must be fixed red because the device has restarted. ▪ Reconnect the machine to the network by following the procedure on the TSS Info Hub User manual. ▪...
  • Page 39 ▪ Correct tightening of the screw TCEI M6. If the screw it is not tightened, the bushing moves. Remove the screw, apply adhesive LOXEAL 54-03, or similar, and tighten with at 5Nm/3.7ftlbs- ▪ Check the correct spring foot pedal preload. If the ends of the spring are not in contact with the metal bushing, bend them until contact is reached.
  • Page 40 ▪ Verify the play between foot pedal and connecting rod. ▪ The correct play is obtained with a 0,05mm spacer between lever and foot pedal. Tighten the screw TE M6 and the self-locking nut to get this. IMPORTANT! IF ONE OR MORE OF THE AFOREMENTIONED ADJUSTMENTS IS NECESSARY, ONCE COMPLETED CHECK THE ADJUSTMENT OF THE POTENTIOMETER AS DESCRIBED BELOW.
  • Page 41 TO REPLACE THE POTENTIOMETER ▪ Disconnect the potentiometer cable. Remove the rod from the potentiometer linkage ▪ Release the set screw that secure the linkage to the potentiometer. ▪ Remove the linkage from the potentiometer. ▪ Loosen the 2 screws to remove the potentiometer assembly.
  • Page 42 ▪ Install the new potentiometer unit. ▪ Fit the cable. ▪ Mount the linkage to the potentiometer. Make sure to bolt the rod to the middle hole on the pedal. Adjust the play to 0.05mm as described above. ▪ Connect the machine to the power supply ▪...

  • Page 43: Turntable Cts Potentiometer On North America Version: Check And Replacement

    TURNTABLE CTS POTENTIOMETER ON NORTH AMERICA VERSION: CHECK AND REPLACEMENT  : 1h.  : Defective potentiometer may cause the following malfunction: 1. Turning the machine on the turntable turns itself with rotational pedal in rest position. TO CHECK THE POTENTIOMETER: ▪...
  • Page 44 ▪ Remove the cover of the inverter box (only NORTH AMERICA version) 5.4. ▪ Remove the cover of the potentiometer box. ▪ Check that the potentiometer unit is secured correctly to its bracket. ▪ Verify if the screw STEI M4 is present in the plastic potentiometer lever 5.2. ▪...
  • Page 45 ▪ Remove the seeger ring from the connecting rod. ▪ Loosen the 2 screws and to dismount the potentiometer from the bracket. ▪ Install the new potentiometer unit. ▪ Fit the cable. ▪ Connect the machine to the power supply. ▪...

  • Page 46: Stop Button: Check And Replacement

    ▪ Check that the machine is working properly. ▪ Switch off the machine and disconnect it from the power supply. ▪ Fit the cover of the potentiometer box. ▪ Fit the cover of the inverter box. ▪ Fit the lateral panel. STOP BUTTON: CHECK AND REPLACEMENT ...
  • Page 47 ▪ Take the Voltmeter and select it in Ohm. ▪ Position the Voltmeter terminals on the switch connector one and make that there is continuity: If there is not continuity in this step, the switch is defective. TO REPLACE THE STOP BUTTON ▪...

  • Page 48: Proximity Sensor

    PROXIMITY SENSOR  : 1h : A faulty proximity switch can cause the following malfunctions: 1. When the position search key on the user interface display is pressed the turntable does not move. CHECKING THE PROXIMITY SENSOR IF THERE IS THE USER INTERFACE: Enable the TSS Info Hub App and access the “Service Management”, 3.2.5 of the user manual.
  • Page 49 IMPORTANT! Do not use the tooth close to the shaft key, because it is the zero reference tooth and is therefore lower in height. ▪ Check that there are the position adjustment marks on the upper guard of the reducer. ▪...

  • Page 50: User Interface And Service Codes

    ▪ Screw in the sensor on the threaded hole of the reducer so that the head of the sensor touches the surface of the tooth, without forcing it (the flat surface of the nut must be on the side of the sensor head). ▪...

  • Page 51: Access To The "Service" Menu

    The user interface has a “SERVICE” function, enabled by following the indications in chapter 3.2.5 of the TSS Info Hub application User manual, used by the technician to check the correct operation of certain components and to calibrate the touch screen, when necessary. To enable “NUMBER OF ERRORS SAVED”...
  • Page 52 NUMBER OF ERRORS SAVED Number of times that the power module of the inverter (IGBT) has gone in over current or excessively high temperature. Number of times that the inverter has detected excess current. Number of times that the potentiometer on the pedal has gone out of range. Number of times that at switch on the inverter has detected the power supply <195VAC.

  • Page 53: Touch Screen Calibration

    TOUCH SCREEN CALIBRATION ➢ EXITING THE “SERVICE” MENU. To exit the "SERVICE" menu at any stage, press the "RETURN" key”.

  • Page 54: Pneumatic Section

    7. PNEUMATIC SECTION 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 55: Air Filter - Lubricator Assy: Check And Replacement

    If the air leak is from one or more tubes, it means that they could be marked or damaged inside the fittings and their seal is compromised. In this case we recommend disconnecting the tubes, cutting about 10 mm, reconnecting them and checking whether there is still the leak.
  • Page 56 VERSION NORTH AMERICA TO REPLACE THE GLASSES: ▪ Disconnect the air pressure from the machine. ▪ Turn counter-clockwise the glass to remove it from the assy. ▪ If you do not see the O ring coming out together with the lubricator glass during the dismounting,make sure that it is properly installed into its place inside of the filter holder.
  • Page 57 ▪ Refill the oil bowl through the hole up to the maximum level, end upper window. ▪ Tighten again the cap: Make sure to tighten the cap straight and not crooked. ▪ Connect the air pressure again to the machine. ▪...

  • Page 58: Tilting Post Cylinder: Check And Replacement

    TILTING POST CYLINDER: CHECK AND REPLACEMENT  : 30’  : Defective cylinder may cause the following malfunction: 1. Slow or no motion of the tilting post. 2. External air leaking from the flange or from the piston rod 3. Air leaking from fittings. 4.
  • Page 59 ▪ Position the cylinder where it leaks air. ▪ Disconnect the air pipe where there is not any air pressure. ▪ If the air is getting out from the cylinder fitting, the cylinder is leaking air. ▪ If the air is getting out from the valve fitting, the control valve is leaking air.
  • Page 60 ▪ Take out the cylinder and disconnect the air pipes. ▪ Connect the air pipes to the new cylinder. ▪ Extract the piston rod of about 5cm/2” ▪ Place the cylinder in its place and hold it from the piston rod while installing the screw in the bottom.

  • Page 61: Vertical Rod Locking Cylinder: Check And Replacement

    VERTICAL ROD LOCKING CYLINDER: CHECK AND REPLACEMENT  : 1h  : Defective vertical locking cylinders may cause the following malfunction: 1. Air leaking from the cylinder. 2. The vertical rod does not remain blocked.. TO CHECK THE CYLINDER: ▪ Remove the cylinder cover.
  • Page 62 ▪ Unlock and remove the two front adjustment screws and the two screws with springs. ▪ Lift the blocking plate and extract the cylinder with robust screwdriver. ▪ Install the new cylinder. ▪ Install the washer. ▪ Install the two front adjustment screws and turn them until end of stroke.

  • Page 63: Horizontal Blocking Cylinder: Check And Replacement

    HORIZONTAL BLOCKING CYLINDER: CHECK AND REPLACEMENT  : 30’  : Defective horizontall locking cylinders may cause the following malfunction: 1. Air leaking from the cylinder. 2. The horizontal rod does not remain blocked.. TO CHECK THE CYLINDER: ▪ Remove the cylinder cover. ▪...
  • Page 64 ▪ Remove the cylinder cover. ▪ Remove the protection of the cylinder. ▪ Place the tool on a piece of wood. ▪ Disconnect the air pipe from the cylinder. ▪ Remove the locking cylinder setscrew. ▪ Remove the upper screw from the vertical rod cap. ▪...

  • Page 65: Valve With Yellow Button: Check And Replacement

    ▪ Mount the new cylinder on the vertical rod. ▪ Secure the bottom side of the cylinder with the set screw. ▪ Install the air pipe. ▪ Mount the upper cover and cylinder prtection. ▪ Plug the machine to air pressure and power supply. ▪...

  • Page 66: Bead Breaker Cylinder: Check And Replacement

    ▪ Disconnect the air pipes from the valve. ▪ Remove the two bolts to dismount the valve from the arm. ▪ Mount the new valve to the arm. ▪ Connect the air pipes to the valve. ▪ Mount the handles. ▪...
  • Page 67 TO CHECK THE CYLINDER WHEN THERE IS AIR LEAKING THROUGH THE VALVE. ▪ Position the cylinder where it leaks air. ▪ Disconnect the air pipe where there is not any air pressure. ▪ If the air is getting out from the fitting, the bead breaker cylinder is leaking air. ▪...
  • Page 68 ▪ Disconnect the air pressure. ▪ Disconnect the air pipes. STANDARD VERSION VALVE WITH HANDLE COMMAND VERSION ▪ Unscrew the two securing screws that hold the cylinder. ▪ Remove the defective cylinder. ▪ Take the new cylinder and install the washers on the piston rod and grease the brackets for the securing screws.

  • Page 69: Turntable Cyliders: 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 or nuts, based on the version ▪...
  • Page 70 ▪ 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 CYLINDER WHEN THERE IS AIR LEAKING THROUGH THE VALVE. ▪ Disconnect the hose without air pressure from the cylinder ▪...

  • Page 71: Manifold Revolving: Check And Replacement

    ▪ 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. ▪ Connect the air pipes. ▪ Connect the air pressure to the machine. ▪...
  • Page 72 ▪ Connect the pipe to cylinder again. ▪ Disconnect the pipe without air pressure from the manifold. ▪ If the air pressure is getting out from the fitting, the manifold is leaking through the O rings. TO REPLACE THE MANIFOLD O RINGS ▪...
  • Page 73 IMPORTANT! ONCE REMOVED THE TURNTABLE MAKE SURE TO DO NOT LOOSE THE ROTATIONAL TANG. ▪ Remove the manifold rotational bolt and the dust proof O ring. ▪ 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.

  • Page 74: Foot Pedal Assembly Valves: Check And Replacement

    ▪ Mount the manifold. Make sure to place the white mark or the lower fitting in opposite compared to the tang. ▪ Install the dust proof O ring. ▪ Install the rotational bolts. ▪ Place the tang on the gearbox shaft. ▪...
  • Page 75 TO CHECK THE VALVES: ▪ Remove the side panel, 4.1. ▪ Check if there is any air leaking in between valve rod and the body. ▪ Position the cylinder where it leaks air. ▪ Disconnect the air pipe where there is not any air pressure. ▪...

  • Page 76: Bead Breaker Valve: Check And Replacement

    ▪ Mount the new valve. ▪ Connect the air pipes. ▪ Plug the machine to the air pressure and to the power supply. ▪ Check if the machine works fine. ▪ Mount the side panel, 5.1. 7.12 BEAD BREAKER VALVE: CHECK AND REPLACEMENT ...
  • Page 77 ▪ Check the valve following 7.8 TO REPLACE THE VALVE: ▪ Disconnect the air pressure from the machine. ▪ Disconnect all pipes from the valve. ▪ Disconnect the handle from the connecting rod. ▪ Unscrew the connecting rod from the valve one. ▪...
  • Page 78 ▪ Take the new valve: tighten the nut and install the washer. ▪ Place the 4 spacers near the fixing holes of the valve. Insert the rod of the valve through the hole on the upper surface of the sheet metal cover. ▪...
  • Page 79 ▪ Place the feeder thickness of 4mm between the washer and the upper surface of the protection valve. Tighten slightly the nut. ▪ Tighten the nut under the protection valve until the end. Check the space between the lower surface of the protection valve and the upper surface of the washer.

  • Page 80: Bead Inflating Valve: Check And Replacement

    7.14 BEAD INFLATING VALVE: CHECK AND REPLACEMENT  : 1h  : 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: ▪ Remove the side panel from the machine. ▪...
  • Page 81 ▪ 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 82: Bead Blaster Valve And Air Tank : Check And Replacement

    7.15 BEAD BLASTER VALVE AND AIR TANK : CHECK AND REPLACEMENT  : 1h  : 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 83: Monometer: Check And Replacement

    ▪ Mount the air pipes. ▪ Connect the air pressure and the power supply. ▪ Check if the machine works fine. ▪ Mount the side panel. 7.17 MONOMETER: CHECK AND REPLACEMENT  : 30’  :Defective manometer may cause the following malfunction: 1.

  • Page 84: Spiral Pipes: Check And Replacement

    TO REPLACE THE MANOMETER ▪ Remove the nipples fitting to get the manometer off. Pay attention to the washer. ▪ Check if there is Loctite on the hole of the manometer fitting ▪ Tighten the sintered air filter absorber # 0019181, also with one drop of Loctite, to nipples fitting. ▪...
  • Page 85 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 86 ▪ Extend the horizontal arm completely and adjust the length of the pipes. ▪ 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.

  • Page 87: Mechanical Section

    8. MECHANICAL SECTION MECHANICAL SECTION The mechanical section is connected to the turntable, the tilting arm, the tool and to the bead breakers adjustments. Usually, these parts do not require the replacement and in any case their replacement is required after years of intensive working.
  • Page 88 ▪ 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 89: Standard Tool: Check - Replacement And Adjustments

    ▪ 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. ▪ Hold the screw and lock the counter nut. ▪ Check again if both heads touch the support. ▪...
  • Page 90 ▪ Mark a reference point at 17mm from the terminal end of the tool. ▪ Tighten one of the two adjuster screws until the tail of the reference point of the tool aligned to the rim edge.
  • Page 91 ▪ Tighten to 35 Nm the screw underneath the tool and screw all way in the two register nuts. ▪ Unlock and lock again the tool to make sure about the proper alignment.

  • Page 92: Tool Adjustments: Vertical Clearance

    TOOL ADJUSTMENTS: VERTICAL CLEARANCE  : 1h  : Defective tool may cause the following malfunctions: The tool damaged the tires and/or the rims ▪ Remove the top cover. ▪ Block a 17” rim diameter rim in good condition to the turntable. ▪...
  • Page 93 TO ADJUST THE VERTICAL ROD BLOCKING PLATE: ▪ Press the yellow button valve to lower completely the vertical tool rod. ▪ Tighten as much as possible the vertical blocking cylinder adjustment screw in order to block the rod. ▪ Pull the yellow button valve all towards the operator in order to lift the vertical tool rod.

  • Page 94: Tool Adjustments: Horizontal Clearance

    TOOL ADJUSTMENTS: HORIZONTAL CLEARANCE  : 1h  : Defective tool may cause the following malfunctions: The tool damaged the tires and/or the rims ▪ Remove the cylinder cover. ▪ Block a 17” rim diameter rim in good condition to the turntable. ▪...

  • Page 95: Horizontal Arm Rollers: Check And Adjustment

    TO ADJUST THE HORIZONTAL ARM BLOCKING PLATE: ▪ Unlock the horizontal arm. ▪ 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 96: Gear Box: Check And Replacement

    GEAR BOX: CHECK AND REPLACEMENT  : 2h  : Incorrect gearbox may cause the following malfunctions: 1. Noisy rotation. 2. Low rotation torque. 3. Oil leaking. TO CHECK GEARBOX: ▪ Turn the machine off or disconnect the machine from power supply. ▪...
  • Page 97 ▪ Rotate the shaft with the pulley so that there is a complete tooth in front of the hole (do not use the tooth close to the shaft key, because it is the zero reference tooth and is therefore lower in height.).

  • Page 98: Turntable Jaw: Check, Replacement And Adjustment

    TURNTABLE JAW: CHECK, REPLACEMENT AND ADJUSTMENT  : 30’ one or two jaws. 1h all 4 jaws.  : Defective jaw may cause following malfunctions: 1. Rims come off from the turntable during mounting or dismounting. TO CHECK THE JAWS: ▪...
  • Page 99 ▪ 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 100 ▪ Take a piece of paper and make sure that all 4 clamps should contact at the rim equally during the clamping operation. Readjust individual clamp if one or more clamp will not contact the rim properly. ▪ Lock all 4 screws firmly. ▪...

  • Page 101: Trouble Shooting Section

    9. TROUBLE SHOOTING SECTION COMPLAINT 1: The machine has problem with the turntable rotation. See Chapetr 5.1 COMPLAINT 2: Tilting post does not tilt or tilt very slowly or it tilts too fast. Check the air pressure. Check if there is air leaking from the cylinder. Check if there is air leaking from the valve.
  • Page 102 UPDATING GUIDE REVISION D February 2025 CHAPTER 6.1: Updated text and pictures Page AUTHOR: Stefano Muzzioli...
  • Page 103 B L A N K P A G E...
  • Page 104 Notice : The information contained in this document is subject to change without notice. S n a p - o n makes no warranty with regard to present documentation. Snap-on shall not be liable for errors contained here- in or for incidental consequential damages in connection with furnishings, performance, or use of this material. - Manufacturing Facilities - ·...

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