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Brake Master Cylinder

Scott Brake Master CylinderThe Scott Brake Master Cylinder is one of the largest selling aircraft master cylinders in the world. Installed as standard equipment on Piper and other aircraft for many years, these units provide rugged and virtually trouble-free service with few wearing parts. One pair of master cylinders – one left hand (1248H) and one right hand (1260H) – is required on most aircraft. On the Piper Tri-Pacer, however, only one left master cylinder (1248H) is required.


  • Maximum Working Pressure: 350 lbs
  • Pedal Pressure: 100 lbs
  • Recommended Hydraulic Fluid: MIL-H-5606
  • Weight as Shown: 21 ounces dry

No. Description   No. Description
  Master Cylinder, LH, 1248H   7 Compression Cover U2728A
  Master Cylinder, RH, 1260H   8 Piston U1383A-000
1 Vent Screw Gasket U1159A   9 Pedal, RH Unit 1712
2 Bracket, RH Unit U1220A   10 Pedal, LH Unit 1714
3 Bracket, LH Unit U1232A   11 Diaphragm U750-384
4 Diaphragm Pad U2003-001   12 Screw MS35265-45
5 Spring 1256   13 Nut AC356-1032
6 Vent Screw UB-1258   14 Bolt AN3-20A