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RB 211 Maintenance Scope
B-6
Rebuild the Module to the Rolls-Royce overhaul specification, fits and clearances etc. and ship
back to the Customer or replace in the ‘POOL’.
05 Module:
• Carry out dimension check of IPT Rotor setting.
• Inspect the IP Turbine Casing Assembly in the Bulk Condition, including Seal Segments, IP
NGV’s, HP and IP Roller Bearings and Static Abradable Seals.
• Inspect the IP Turbine Rotor Assembly in the Bulk condition. Check wear on IP
• Turbine blade ‘Z’ notch, turbine disc, shaft, coupling and IPT bearing.
• Insure no ‘coking’ in oil scavenge or vent lines in the ‘spider’.
• Carry out the following Repair Notes and Overhaul Information Alerts:
− RN5018 HP/IP support internal pipe inspection/test
− RN5037 IP Turbine Blade inspection criteria
• Embody the following modifications:
− Mod 1123 Revised vent connection, if required
06 Module:
• Visually Inspect all accessories, including Air and Oil Piping, Nose Bullet and P2 Air Filter.
• Electrically check Thermocouple Harness.
• Remove HP and IP Bleed Valves and Overhaul.
• Replace Seals in Davis Valve.
Rebuild
Using the Customers spare 04 Module, rebuild the engine to the Rolls-Royce Overhaul build
specification and fits/clearance limits.