Tire Removal Process
Step 1
Remove Cage arms, quick release pins, and lower cage arms.
Step 2
Measure wheel diameter - Position lower blocks into place by adding 1" to previous wheel measurement, as shown to ensure the outer wheel diameter does not come into contact with block "upper step".
Step 3
Lay wheel and tire in accordance to lower blocks. Check for proper alignment by making sure the lower crossbar section is centered when looking down through the bearing hole.
Step 4
Set upper cross section on top of wheel and tire, rotate cage arms upward and allow quick release pin to lock into position. In accordance to your tire diameter, adjust the 4 upper crossbar blocks to center of sidewall on tire.
Step 5
Set Hydraulic assist on top of the Upper cross section and connect air hose.
NOTE: Double check Cage Arm fasteners, Lower and Upper sections to ensure the correct positioning before activating the Hydraulic assist.
Step 6
Apply pressure carefully until the tire becomes separated from both the lower and upper halves of the wheel.
NOTE: In most cases, the lower bead will break first, then upper bead will follow.
Step 7
Release hydraulic pressure and remove hydraulic assist from upper crossbar.
Step 8
Remove Cage arm quick release pins and lower cage arms, remove upper cross section. Remove tire from wheel.
Tire Installation Process
Step 1
Place wheel on lower crossbar blocks "bottom step" ensuring you have even spacing from wheel and the 4 blocks.
NOTE: At this point, once proper spacing is achieved, it's recommended to place a "mark" or "line", on the lower crossbar for this particular wheel assembly. Adjustments can be made for most sizes of aircraft wheels. If this is the only wheel assembly in your fleet, you will not have to adjust lower blocks again.
Step 2
Install tire onto wheel assembly. Reference AMM/CMM for proper tire placement onto wheel.
Step 3
Place the split portion of the wheel (split rim) or upper portion of wheel (bolted wheel) onto the tire.
Step 4
Set upper cross section on top of wheel and tire, rotate cage arms upward and allow quick release pin to lock into position. In accordance to your wheel diameter, adjust the 4 upper crossbar blocks to the outer edge of the wheel, ensuring you have a good seat on the wheel and enough spacing to install the wheel retaining ring (if split ring type). For bolted wheels halves, make sure you adjust 4 upper crossbar blocks to have a good seat on the wheel to compress wheel halves together to start the bolts.
Step 5
Set Hydraulic assist on top of the Upper cross section and connect air hose.
NOTE: Double check Cage Arm fasteners, Lower and Upper sections to ensure the correct positioning before activating the Hydraulic assist.
Step 6
Apply pressure carefully until the tire is compressed enough to install retaining ring on the wheel (split wheel) or bolts with nuts (bolted wheel halves).
Step 7
Release hydraulic pressure and remove hydraulic assist from upper crossbar.
Step 8
Remove cage arms quick release pins and lower cage arms, remove upper cross section. Remove assembled wheel and tire from bead breaker.