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Originally posted by brad
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I worked at QF Engineering for 17 year. Hands-on in the components area & then planning for sheet metal, undercarriage, machine shop, interiors, evacuation systems, prop shop & other stuff, so I was never directly involved in the wheel shop.
From observation:
Widebody rims are in 2 halves with an o-ring seal. The o-ring gets a light coating of oil/lube but everything else is wiped clean with alcohol.
The tire is dropped on the rim-half, o-ring fitted & the other rim-half fitted & bolted/torqued. Tire assembly is placed in a cage, then they simply try & inflate the tire. If it won't seat with normal pressure then i think they used talc to lubricate the bead.
They did have some type of purging process but I never looked very closely (usually walking to the canteen). They used to let them sit for a few days as well & would periodically check the pressure.
Sorry i can't be more helpful but it wasn't my area. Ask me about bench testing an RR RB211 Variable Inlet Guide Vane controller & I can make a bit more sense (not much though).
From observation:
Widebody rims are in 2 halves with an o-ring seal. The o-ring gets a light coating of oil/lube but everything else is wiped clean with alcohol.
The tire is dropped on the rim-half, o-ring fitted & the other rim-half fitted & bolted/torqued. Tire assembly is placed in a cage, then they simply try & inflate the tire. If it won't seat with normal pressure then i think they used talc to lubricate the bead.
They did have some type of purging process but I never looked very closely (usually walking to the canteen). They used to let them sit for a few days as well & would periodically check the pressure.
Sorry i can't be more helpful but it wasn't my area. Ask me about bench testing an RR RB211 Variable Inlet Guide Vane controller & I can make a bit more sense (not much though).
RB 211's? BIG!
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