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From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Scheme to couple an HP pump to the standard double pump for customer complaint cases, including plumbing and wiring instructions.

Identifier  ExFiles\Box 149\4\  scan0384
Date  4th August 1937
  
To By.{R.W. Bailey - Chief Engineer} 1263 Rm{William Robotham - Chief Engineer}/JBD.{John B. Dixon - Fuel Systems}4/JH.4.8.37.

Will you please provide a scheme to couple up the H.P. pump in the frame to LeC.5191 to the standard double pump on the dash.

This scheme is for use on customers complaint cases. The parts are being made in the works and will be available on Monday.

We are arranging to break the existing petrol pipe and insert a T piece connecting up to the suction of the HP pump in the frame. A new pipe from the HP pump delivery will then be carried parallel with the existing pipe connecting up with the double pump on the dash using a union instead of the plug as on the production 3rd pump scheme.

Wiring.

Both pumps to be connected in parallel with the switch selecting either A or B on both pumps or all together. As there are no fuses on the pump the fuse box detailed for the production scheme RR.Sch. 1107 will be used and a position will have to be found for this box to clear the double pump.

Rm{William Robotham - Chief Engineer}/JBD.{John B. Dixon - Fuel Systems}
  
  


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