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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).
List of new and replaced parts for a 20/25 HP chassis to fit Disc Type Dampers.

Identifier  ExFiles\Box 105\4\  scan0187
Date  10th December 1936
  
To. Rm{William Robotham - Chief Engineer}/HDY.{William Hardy}
BY/TWD{T. W. D???Aeith}5/E.10.12.36.

20/25-HP. CHASSIS.

GEAR BOX & ACTUATING GEAR. SECTION 6030.
REAR BRAKE EQUAL. GEAR. (FOOT). SECTION 6150.
FRONT BRAKE EQUALISER. SECTION 6151.
SERVO COUNTERSHAFT. SECTION 6156.
SERVO MOTOR & MECHANISM. SECTION 6180.

N.Sch.4406. Disc Type Damper for Servo Suspension Bracket.
N.Sch.4453. Disc Type Damper for Servo Suspension Bracket.

As requested, we send you herewith the list of parts required to enable Disc Type Damper to N.Sch's. 4406. and 4453. to be fitted to the above chassis.

New Parts. Replaced Parts.

Sec.6030.
K.3028. C'sk. Head Screw. 1 off. K.3022. 1 off.
GB.1795. Lug. Disc Damper Link. 1 " Additional.

Sec.6150.
G.57026. Pull Rod. 1 off. G.54868. 1 off.

Sec.6151.
G.57027. Pull Rod. 1 off. G.53529. 1 off.

Sec.6156.
G.57130. C'shaft Bearing Housing. 1 off. G.55976. 1 off.
GB.1796. Bush. 1 " Additional.
G.56298. Oil Guard. 1 off. - Not required.
G.77433. Outlet Pipe. 1 " - " "
K.4847. Taper Pin. 1 " - " "

Sec.6180.
GB.1804. Fulcrum Pin. Balance Lever. 1 off. G.53987. 1 off.
GB.1806. Damper Lever. 1 " G.54912. 1 "
GB.1807. Suspension Bracket. 1 " G.56207/8.1 "
G.83157. Pin. Outer Pressure Plates. 1 " Additional.
G.83159. Washer. Link Pin. 1 " "
G.83162. Bush. Friction Disc. 1 " "
G.83163. Nut. Bush in Friction Plate. 1 " "
G.84820. Clamping Disc Spring. 2 " "
G.83165. Friction Lining. Damper. 2 " "
GB.2349. Friction Plate. Outer. 1 " "
GB 1800 " " Inner. 1 " "
  
  


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