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Views: 0 Author: Site Editor Publish Time: 2025-01-26 Origin: Site
Completely deflate tire by removing valve core from valve before attempting any demounting operation. Check the valve stem by running a piece of wire through the stem to make sure it is not plugged.
READAND FOLLOW SAFETY INSTRUCTIONS. FAILURE TO DO COULD RESULT IN SERIOUS INJURY.
2.1.1 The task of servicing tires and wheels can be extremely dangerous and should be performed by trained personnel only, using the correct tools, and following the procedures presented here and in manufacturers' catalogs, instruction manuals, or government instruction material.
2.1.2 Always use approved tire and rim combinations for sizes and contours.
2.1.3 Always wear personal protection equipment when servicing tire and wheels.
2.1.4 Never exceed manufacturer's recommended tire inflation pressure.
2.1.5 Always use proper lifting techniques and mechanized lifting aids to move heavy components and assemblies.
2.1.6 Never rein flate a tire without determining and correcting its problem.
2.1.7 Parts that are cracked, worn, pitted with corrosion or damaged must be destroyed, discarded and replaced with good parts.
2.1.8 We never recommend to assembly rim by mixing rim components which manufactured by different companies.Always verify the compatibility of components before assembling GKZG rim components to other company's parts.
2.1.9 GKZG products comply with the design requirement respected to the environment protection requirements. Always deposit,use and discards parts in accordance with local legal requirements.
2.2.1 Use a "Safety Cage" show as figure 1 or other safety device to inflate tires-rims assembly.
Figure1 Safety Cage
2.2.2 Stay out of the range of the "trajectory" as indicated by area in thefigure 2 below. During deflation work, DO NOT allows other workers or third parties to approach the area of the trajectory.
Figure 2 Trajectory (danger zone)
In some cases, the hazardous trajectory may be different from the intended flight path.
Note: Operating as figure 2 is incorrect!
2.2.3 Inflate to approximately 20KPa (3 psi) and again check for proper engagement of all components. If assembly is correct, continue to inflate to recommended pressure. If assembly is incorrect, STOP and DEFLATE, find the cause.
2.2.4 Discard any lock rings with more than 10mm opening ends without any force.
2.2.5 DO NOT make modifications involving welding, heating, soldering, etc. Such modifications could lead to the deformation as well as the deterioration of the strength and structural integrity of the rim components.
Figure 4 Names of 3-piece Rim Components
Figure 5Names of 5-piece Rim Components
Only present correct procedures and expected effects. The required tools are for reference. For example, if special tire mounting equipment is applied, the action and place of the parts are different, but the procedures are the same.
4.1.1 Before any other removal action, remove the valve core (if it is a two-tire wheel, both tires deflate) to ensure that the gas is drained.
4.1.2 Lay the assembly on the floor.
4.1.3 Drive a bead unseating tool between the tire bead and rim flange, being careful not to damage the tire bead area. After the bead has been completely released around the tire, turn the tire and rim over and repeat the bead unseating procedure.
4.1.4 With the narrow ledge on top, thoroughly lubricate the rim flange and tire bead area with a vegetable-based lubricant.
4.1.5 Pry the bead over the rim flange using two tire irons. Take small bites to avoid damaging the bead. Continue until the top bead is completely over the rim flange.
4.1.6 To completely remove the tire from the rim, turn assembly over so the narrow ledge is down and lubricate the second tire bead and rim flange. Be sure the bead still on the rim is in the rim well and insert the tire irons under the opposite side of the bead. Work the rim slowly out of the tire by taking small bites alternately using both tire irons.
4.2.1 Lay the rim on the floor with the narrow ledge on the top. Thoroughly lubricate the tire bead area and rim flange with a vegetable-based lubricant
4.2.2 Push the bottom bead over the rim flange as far as possible and down into the rim well. Use tire irons to work the first tire bead completely over the rim flange, taking small bites and being careful not to damage the bead.
4.2.3 Use tire irons to lever the top bead over the rim flange. Locking pliers may be used to resist tire slipping back off rim.
4.2.4 Thoroughly lubricate the tire bead area and rim bead- seats on both sides of the tire.
4.2.5 Place the tire in a safety cage. Inflate the tire to seat the beads. Check for correct concentric centering of tire on rim. Successful mounting depends on how well the shape of the tire has been maintained. If the beads are in or near their molded position, they can be seated by inflating the tire. Where the beads have been squeezed together, the use of an in flat or ring will be required to provide a seal between the tire bead and rim.
If assembly is incorrect-STOP-DEFLATE-COR RECT THE ASSEMBLY-repeat procedure.
Completely deflate tire by removing valve core from valve (both tires of a dual assembly) before attempting any demounting operation.
4.3.1 Drive the end of two tire iron tools between the tire and side flange about 120 mm apart.
4.3.2 Pry both tools down and out. Leave one tool in position and place the second about 120mm beyond. Repeat in successive steps until the tire bead is completely unseated.
4.3.3 Depress the side flange down along the rim base. Pry the lock ring loose, starting at the split then remove the lock ring.
4.3.4 Hold the side flange down with tire iron to remove the "O" ring from ring groove.
4.3.5 Remove the side flange.
4.3.6 Turn tire and rim over and unseat second bead by inserting both tire iron tools between tire and fixed rim flange as instep 4.3.3. Repeat steps 4.3.3 and 4.3.4 until the tire bead is completely broken loose from the rim on the fixed flange side. Lift rim base out of tire.
4.4.1 Clean all dirt and rust from interlocking faces of multi-piece rim components particularly the gutter sections which hold the lock ring and "O" ring in place. Failure to adequately clean all components will inhibit efforts to inspect, maintain, and reassemble the tire and wheel correctly.
4.4.2 Inspect rim base and wheel components for cracks, wear, corrosion and damage.
4.4.3 In situations where part condition is suspect or in doubt destroy the part, discard and replace with good part.
4.4.4 Inspect the tire for wear, cracks, tears, punctures and other damage.
4.4.5 Install valve spud on rim.
Follow valve spud manufacturer's recommendations- and installation instructions.
4.4.6 Place rim base on the floor with fixed flange side down. Lubricate both bead seats of the tire with vegetable base lubricant. Place tire over rim base.
4.4.7 Place side flange over rim base and push straight down with hands as far as possible. Make sure side flange does not bind on rim base.
4.4.8 Lubricate a new rubber "O" ring. Place "O" ring in groove on one side and stretch "O" ring snapping it into place rather than rolling it into place. Then lubricate the entire "O" ring area. (NOTE: It may be necessary to hold the side flange down with the tire iron tool in order to expose the "O" ring groove.)
4.4.9 Hold the side flange down to position it below both grooves in the rim base and snap lock ring into lock ring (upper) groove.
4.4.10 Check components to make sure that parts are correctly assembled.
NOTE: Lock ring should be fully seated in groove.
4.4.11 Place rim and tire in a safety cage during tire inflation. Stand out of the trajectory during inflation as illustrated (figure2). Inflate to approximately 3 psi and again check for proper engagement of all components. If assembly is correct, continue to inflate to recommended pressure.
If assembly is incorrect-STOP-DEFLATE-COR RECT THE ASSEMBLY-repeat procedure.
4.5.1 Completely deflate tire by removing valve core from valve (both tires of a dual assembly) before attempting any demounting operation.
4.5.2 After complete deflation (Remove driving key if present), place the assembly on the floor (with the lock ring side up).
4.5.3 Remove the lock ring, using two tire irons. (NOTE: If this is not possible, the tire bead may be unseated as shown in step4.5.5).
4.5.4 Remove the "O" ring by prying the bead seat band back and inserting as crew driver under the "O" ring and pulling it from the groove.
4.5.5 Drive the end of two tire iron tools into the pry bar pockets(A continuous lip is provided on some rims). Pry both tools down. Release the tools and move about 120mm around the rim,continue the procedure until the tire bead is unseated
4.5.6 Remove bead seat band using hoist or pry bars.
4.5.7 Remove the side flange.
4.5.8 Turn assembly over and repeat tire bead unseating procedure on the back side(Steps 4.5.5).
4.5.9 Lift rim base from tire using hoist.
4.5.10 Remove the side flange.
NOTE: In some cases it may be advantageous to use a hydraulic demounting tool. However, caution must be used to avoid bending the flange or breaking the butt weld. Follow procedure out lined in step 4.5.5.
4.6.1 Clean all dirt and rust from interlocking faces of multi-piece rim components particularly the gutter sections which hold the lock ring and "O" ring in place. Failure to adequately clean all components will inhibit efforts to inspect, maintain, and reassemble the tire and wheel correctly.
4.6.2 Inspect rim base and wheel components for cracks, wear,corrosion and damage.
4.6.3 In situations where part condition is suspect or in doubt destroy the part, discard and replace with good part.
4.6.4 Inspect the tire for wear, cracks, tears, punctures and other damage.
4.6.5 Install valve spud on rim.
Follow valve spud manufacturer's recommendations- and installation instructions.
4.6.6 Place rim base on floor, gutter side up. Place inner flange on rim base, lubricate tire beads with vegetable lubricant. Place tire on rim using tire handler or hoist with sling.
4.6.7 Depress the tire so that the lower tire bead is driven onto the back 5° Bead Seat taper of the rim. This will expose more of the gutter at the upper side of the rim base to facilitate assembly
4.6.8 Place the outer flange over the rim base on the tire.
4.6.9 Place the bead seat band on the rim base. If present, driver pockets must be aligned. Due to limited clearance between bead seats and rim base, bead seat band will bind if cocked slightly.
If necessary, remove and reinstall, or use rubber, plastic or brass faced mallet to tap, lightly upward on the bead seat band in order to get it to seat properly.
4.6.10 Lubricate a new rubber "O" ring. Place "O" ring in groove on one side and stretch "O" ring snapping it into place rather than rolling it into place. Then lubricate the entire "O" ring area.
4.6.11 Start the lock ring in the lock ring groove and push or walk it into place. Insert drive key as required in pockets.
4.6.12 Check components to make sure that parts are correctly assembled.
NOTE: Lock ring should be fully seated in groove.
4.6.13 Place rim and tire in a safety cage during tire inflation. Stand out of the trajectory during inflation as illustrated (figure2). Inflate to approximately 3 psi and again check for proper engagement of all components. If assembly is correct, continue to inflate to recommended pressure.
If assembly is incorrect-STOP– DEFLATE-COR RECT THE ASSEMBLY-repeat procedure.
