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Coats CHD-4730W Operating And Maintenance Instructions Manual

Electro-hydraulic tire changer for medium and large size tires
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CHD-4730/W
Electro-Hydraulic Tire Changer For
Medium and Large Size Tires
Parts Identification
READ these instructions before placing unit in
service. KEEP these and other materials delivered
with the unit in a binder near the machine for ease
of reference by supervisors and operators.

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Summary of Contents for Coats CHD-4730W

  • Page 1 CHD-4730/W Electro-Hydraulic Tire Changer For Medium and Large Size Tires Parts Identification READ these instructions before placing unit in service. KEEP these and other materials delivered with the unit in a binder near the machine for ease of reference by supervisors and operators.

  • Page 2: Parts Identification

    Parts Identification The following pages include parts breakdowns with exploded view illustrations to help with ordering replacement or spare kits. Assemblies are noted where it is recommended that individual parts not be ordered separately. Note that the parts view illustrations are for multiple models and not all parts shown are on all models. Every effort is made to supply accurate exploded views, however, due to interim changes in manufacturing operations, some units may not be exactly as illustrated.
  • Page 3 32 *84399295 NUT M16 84299251 ROLLER 34 *84399192 SPLIT PIN D.4x36 35 *84399813 WASHER 20 (21x37x3) 36 *83001039 ROLLER 37 *86618140 TOOL-HOLDER 83000114 BEAD LOOSENER SPRING 39 *82109539 HOOK 40 *83001031 CAM • COATS Wheel Balancer COATS Wheel Balancer •...
  • Page 4 25 *84398807 WASHER 14 (15x28x2,5) 26 *84399121 SCREW 6x6 27 *84399377 SCREW 10x30 *83018210 CHUCK FLANGE RUBBER PROTECTION 29 *83018209 CHUCK RUBBER PROTECTION 30 *84399971 SELF-LOCKING NUT M10 31 *84399837 SCREW 8x20 • COATS Wheel Balancer COATS Wheel Balancer •...
  • Page 5 *83018173 EXHAUST PIPE 1/4” L=3000 *83018172 CONNECTING PIPE 1/4” L=3000 42 *84399969 NUT M10 43 *84399979 SEEGER RING D.30 44 *84398723 SCREW 6x12 45 *84197253 PUMP 46 *84396941 NUT M14 47 *84398802 NUT M14 • COATS Wheel Balancer COATS Wheel Balancer •...
  • Page 6 34 *84199145 STUD BOLT 1/4” 35 *84398904 SCREW TSP 4x25 4.8 *83001976 PLASTIC RING 37 *83199628 BRUSH *86611746 LEVER COVER 39 *84399229 SCREW TE M6x45 8.8 *86611747 LEVER COVER 41 *84597268 OVERLOAD CUTOUT • COATS Wheel Balancer COATS Wheel Balancer •...
  • Page 7 89299271 138/90 PLIERS FOR ALLOY RIMS 28 *83001061 LEVER 29 *86601002 BEAD LIFTING LEVER 30 *82010852 DOUBLE TOOL 32 *84396878 STEEL SHIM 12x25x0,5 33 *82033519 CLAMP SPACER 84294076 BALL GRIP THP 25 M.6x15 87019167 CLAMP SUPPORT SPACER • COATS Wheel Balancer COATS Wheel Balancer •...
  • Page 8 CHD - 4730 - 4730W Electro-Hydraulic Tire Changer For Medium and Large Size Tires OPERATING AND MAINTENANCE INSTRUCTIONS READ these instructions before placing unit in service KEEP these and other materials delivered with the unit in a binder near the machine for ease of reference by supervisors and operators.

  • Page 9: Technical Data

    1. INTRODUCTION Thank you for purchasing one of our tIre-changers: This label has been specifically designed to fit and remove truck, bus and commercial vehicle tires, with rims from 14” to 26” and maximum 47” (1200 mm) diameter. Any other use is improper and therefore not authorized. The machine has been constructed to the best quality principles.

  • Page 10: Description Of The Machine

    2. DESCRIPTION OF THE MACHINE Fig.2 ON/OFF main switch Wheel support sliding ramp Clamping chuck control lever for rotation Tool tray CLOCKWISE/COUNTERCLOCKWISE rotation Motor belt protective cover Control lever for FORWARD/BACKWARD Bead loosening disk (optional) Movement of tool-arm carriage Fingen tool (optional) Control lever for UP/DOWN movement of clamping chuck arm Tool lock/release pin Controls stand...
  • Page 11 3. GENERAL .1_General SAFETy rules The tire-changer has been designed and manufactured exclusively for mountig/demounting tires onto/from the rims. Any other use is to be considered improper. The manufacturer cannot be held responsible for any damage or injury caused by an improper use.The machine may only be used by adult staff, previously authorized and trained.
  • Page 12 4. TRANSPORT, MOVING AND STORING The machine is delivered in a cardboard box on wooden pallet. The machine must be transported in its original package and kept in the position shown on the package itself. Move the machine by means of a fork-lift truck having enough loading capacity. Fit the forks as shown in fig.4 Should the machine be temporarily stored, make sure that the storing place has the following requirements: Max.

  • Page 13: Installation Site

    6. INSTALLATION 6.1_Installation site Chose the installation site according to the current rules on Safety at Work. The automatic tire-changer needs to be connected to the electric network. It is therefore advisable to install it in a place where this connection is available.

  • Page 14: Electrical Connection

    Ø 0,7 Ø 0,7 MAX 0,25% Ø 0,7 6._Parts assembling Mount the control stand by fitting the hose in its support and fix as shown in fig.7 Mount the tool tray and fasten it by means of the two bolts shown in fig.8 6._Electrical connection.

  • Page 15: Operation Test

    Fig.7 Fig.10 Fig. 8 6._Operation test Fig.9 Before working with tire-changer it is necessary to carry out some tests to check the correct operation and installation as well. All the following operations must be carried out with the tool-arm (17 fig 2) set in non-working position. Press handle 18 to unlock the arm.

  • Page 16: Notes For Operation

    Fig.11 7. OPERATION 7.1_Notes for operation The non-observance of instructions and warnings can cause serious injuries to the operator or third persons. Do not use the machine before having read and understood all the instructions given in this manual. Keep unauthorized persons far from the working area. Make always sure to respect all the rules as previously recomended in the manual, when installing the tire-changer installation.
  • Page 17 7._Rim clamping The machine has been designed to work on 14”-26” tyres mounted on rims having central hole of min. 4” (100 mm.) – max. 12” (300 mm.) diameter. According to the kind of rim, it is therefore, necessary to act in different ways to lock it onto the flange. RIMS WITH CENTRAL HOLE Ø...
  • Page 18 7. TUBELESS TIRE 7..1_ Bead loosening and tire removing with ROLLER TOOL 1) Make sure that the tyre is clamped and deflated. ) Tip the tool-arm (17) in its working position, by lowering it until it gets hooked properly. Always check that the arm is properly hooked to the carriage. ) By means of levers (3) and (4) make the roller tool position close to the rim edge and outsideface of the tire(fig.16) ) Make the tire rotate and, at the same time, press the roller against the tire bead at brief steps.
  • Page 19 Fig.17 Fig.16 Fig.19 Fig.18 7.._Bead loosening and demountig with DOUBLE TOOL (optional # 90955) 1) Make sure that the tire is clamped and deflated. 2) Tip the tool-arm (17) in the working position, by lowering it until it gets hooked on the carriage. Always check that the arm is correctly hooked to the carriage.
  • Page 20 DO NOT keep your hands on the tool when setting it in working position so as to avoid any possible crushing between tire and tool. 8) Repeat the operations of points (5) and (6) until the second bead is completely detached (fig.21) 9) Go ahead on pushing the tire it comes completery off the rim (fig.22) DANGER! When the beads come off the rim, the tire will fall.
  • Page 21 ) Position the tire on the ramp and lower the spindle arm (make sure the g-clamp is at the hight point 5) Lift the rim with the tire hooked to it and turn it counterclockwise of about 6 - 8 inch (15-20 cm.) The tire will be positioned inclined across the rim (fig.
  • Page 22 7..5_Tire mounting with HOOKED TOOL (optional). 1) Make sure that the rim is clamped properly (see paragraph on “rim clamping”). ) lubricate both beads and rim with tire manufacturer recomended lubricant. ) Attach the g-clamp to the outside edge of the rim, at its highest point. ) Position the tire on the ramp and lower the spindle (make sure the g-clampis at the high point) 5) Lift the rim with the tire hooked to it, and turn it counterclockwise about 6-8 inches (15-20 cm.) The tire will be positioned inclined across the rim.(fig.
  • Page 23 Fig.29 1) Position the g-clamp outside the second bead, about 8 inches (20 cm) to the right of the valve (fig.30) 15) Turn the spindle clockwise until the g-clamp is in its lowest point (6 o’clock). Second bead be set in position, too. (fig.31) 16) Remove the g-clamp from the rim and slide the carriage away from the tire set the tool in its non working position.
  • Page 24 7. TUBE TIRES 7..1_Bead loosening and demounting with DOUBLE TOOL (optional) WARNING: Release inflation valve when deflating the tire so that the valve, falling inside of the rim, is not an obstacle during bead losen- ing. Follow all the steps described previously for tubeless tires bead loosening. With tube tires with tube, however, stop disk movement as soon as the bead has loosened to avoid damaging the tube inflation valve. 1) Tip the tool carrier arm (17 fig.
  • Page 25 10) Move the tool carrier arm to the inside face of the tire, turn the hook-tool 180° and lower the arm to its working position. Insert it be- tween rim and bead and move it until the bead is by the front edge of the rim (best to do this with the tire assembly turning). 11) Move the rim about 1,5-2 inches (4-5 cm) from the tool, making sure the hook does not detach from the rim.
  • Page 26 13) Turn the spindle until the valve is at the bottom (6 o’clock). 14) Move the ramp (10 fig. 36) under the wheel and lower the spindle until the tire is pressed down against the ramp. Move the ramp slightly towards the outside so. The tire will open a little, to create some space to insert the inner tube. NOTE: The valve hole may be asymmetrical to the centre of the rim.
  • Page 27 Fig.39 Fig.38 7.5 TIRE ASSEMBLy WITH -PIECE SPLIT RING 7.5.1_Bead loosening and demounting with DOUBLE TOOL. (optional) 1) Clamp the tire on the spindle as described previously and make sure it has been deflated. (see par. “rim clamping”) 2) Lower the tool carrier arm to its working position until its hook is engaged into position on the carriage. 3) Position the bead loosening as levelled with the rim (Fig.
  • Page 28 Fig.40 Fig.41 Fig.42 7.5._Tire mounting with DOUBLE TOOL (optional) 1) Move the tool carrier arm to its non-working position. If the rim has been removed from the spindle, put it back on the spindle as de- scribed in the section on “RIM CLAMPING”. If the tyre has the inner tube, position the rim with the valve slot at the bottom (6 o’clock).
  • Page 29 DANGER! PONTETIALLY HAZARDOUS OPERATION! Do it manually only if you are certain you can keep the tire balanced. For large and heavy tIres an adequate lifting device must be used. 9) Move the ramp to free the tirel from the spindle. 10) Remove the tire.
  • Page 30 12) Lower the spindle until the tire is resting on the ramp. 13) Move the ramp towards the outside until the tire together with split-ring is completely off the rim. 14) Remove the rim from the spindle. 15) Position the tire on the ramp with the split-ring turned towards the spindle. 16) Clamp the split ring on the spindle as explained in the section of RIM CLAMPING The tire is not much attached to the split-ring.
  • Page 31 8) Lubricate the O-ring and its seating. 9) Position the locking ring on the rim with the help of the disk as shown in Fig. 46. Move the tool carrier arm to its non-working position and remove the tire clamping hub nut. Support the tire to prevent it from falling off.

  • Page 32: Oil Treatment

    11. OIL TREATMENT Oil is highly pollutant!! Do not throw or release in the environment Treat oil waste disposal according to international and your local standards and regulations. 1. ORDINARy MAINTENANCE WARNING! Maintenance must be performed by authorized staff, only after disconnection of the plug from electric network Regular maintenance in accordance with the instructions is essential for correct operation of the tire-changer and for its long working life.
  • Page 33 Check frequently the oil level inside the hydraulic unit (T, fig. 47) by means of the relevant dipstick placed under the cap of the hydraulic unit (fig.47) If necessary, top up with oil AGIP OSO 46 or alike (ESSO NUTO H46, SHELL TELLUS OIL 46, MOBIL DTE 25, CASTROL HYSPIN AWS 46, CHEVRON RPM PHYDRAULIC OIL 46, BP ENERGOL HLP) WARNING! DISPOSE OF USED OIL IN APPROVED OIL WASTE CONTAINER.

  • Page 34: Optional Accessories

    15. OPTIONAL ACCESSORIES The following optional accessories are available for this tire changer Learn more about automotive tools we have.

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Chd-4730

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