| Description | Date | Identifier | |
| Report investigating a machine failure, attributing the cause to a worn jig and faulty workmanship. | 7th Apr 1937 | Box 149 \ 4 scan0226 | |
| Request for details regarding G.5 petrol pump failures and a defective switch. | 7th Apr 1937 | Box 149 \ 4 scan0227 | |
| The examination of a petrol pump from chassis 3-AZ-22, investigating a complaint of poor delivery. | 7th Apr 1937 | Box 149 \ 4 scan0228 | |
| Request to issue official orders for diaphragm assemblies and rubber pieces. | 8th Apr 1937 | Box 149 \ 4 scan0229 | |
| The porosity and leakage issues of S.U. petrol pump diaphragms, detailing results from endurance tests. | 8th Apr 1937 | Box 149 \ 4 scan0230 | |
| Testing alternative materials, such as synthetic rubber and oiled silk, for fuel pump diaphragms to resist alcohol-based fuels. | 8th Apr 1937 | Box 149 \ 4 scan0231 | |
| Order for three S.U. Petrol pumps for the Phantom III. | 9th Apr 1937 | Box 149 \ 4 scan0232 | |
| Sample pump from S.U.Co., discussing issues with C & A washers and plugs. | 9th Apr 1937 | Box 149 \ 4 scan0233 | |
| Letter to The S.U. Company Ltd. regarding returned Bentley petrol pumps for inspection. | 9th Apr 1937 | Box 149 \ 4 scan0234 | |
| Report on petrol pumps after 10,000 miles and a proposal to fit new diaphragms. | 13th Apr 1937 | Box 149 \ 4 scan0235 | |
| Request to order S.U. double unit petrol pumps and G.5. oil silk diaphragm assemblies. | 14th Apr 1937 | Box 149 \ 4 scan0236 | |
| Faults with returned petrol pumps and an investigation into a Bentley 'driving dog knock'. | 14th Apr 1937 | Box 149 \ 4 scan0237 | |
| Letter to The S.U. Company Ltd. regarding faults found in multiple pumps after testing. | 15th Apr 1937 | Box 149 \ 4 scan0238 | |
| Page 2 of a letter confirming an order for double pumps and oil silk diaphragms. | 15th Apr 1937 | Box 149 \ 4 scan0239 | |
| The dispatch of three petrol pumps to the S.U. Company for examination and repair. | 15th Apr 1937 | Box 149 \ 4 scan0240 | |
| Requesting an official order for two pieces of rubber from the British Goodrich Rubber Co. | 16th Apr 1937 | Box 149 \ 4 scan0241 | |
| S.U. petrol pump failures due to wood shavings. | 16th Apr 1937 | Box 149 \ 4 scan0242 | |
| Letter from S.U. Carburetter Co. Ltd. discussing pump testing issues and test apparatus. | 17th Apr 1937 | Box 149 \ 4 scan0243 | |
| Use and thickness of C. & A. washers in petrol pumps. | 19th Apr 1937 | Box 149 \ 4 scan0244 | |
| Configuration of mechanical and electrical petrol pumps for the Wraith engine. | 20th Apr 1937 | Box 149 \ 4 scan0245 | |
| Follow-up report on petrol pump diaphragm failures on a Bentley due to incompatibility with Discol fuel, proposing a new material. | 20th Apr 1937 | Box 149 \ 4 scan0246 | |
| Confirming the decision to add a mechanical petrol pump to Wraith and Bentley models due to the unreliability of electric pumps. | 21th Apr 1937 | Box 149 \ 4 scan0247 | |
| Instructions for replacing the diaphragms in the S.U. petrol pump. | 22th Apr 1937 | Box 149 \ 4 scan0248 | |
| Instructions for replacing a unit, securing a contact cover, and withdrawing a forked wedge. | 23th Apr 1937 | Box 149 \ 4 scan0249 | |
| Urgent request to manufacture 12 nickel-plated unions for S.U. petrol pumps to fit a Wraith pump onto a 25/30 chassis. | 23th Apr 1937 | Box 149 \ 4 scan0250 | |
| Request to manufacture 12 brass unions for S.U. petrol pumps. | 23th Apr 1937 | Box 149 \ 4 scan0251 | |
| Letter to The SU Co. Ltd. proposing a new procedure for replacing pump diaphragms. | 23th Apr 1937 | Box 149 \ 4 scan0252 | |
| 25/30 HP S.U. petrol pump and oil silk diaphragms. | 24th Apr 1937 | Box 149 \ 4 scan0253 | |
| Instructions for changing diaphragms on G.5 S.U. pumps after 10,000 miles. | 24th Apr 1937 | Box 149 \ 4 scan0254 | |
| Letter to the AC-Sphinx Sparking Plug Co. Ltd. requesting performance curves for a 'T' type fuel pump and inquiring about the production of an 'AJ' type pump. | 26th Apr 1937 | Box 149 \ 4 scan0255 | |
| Specification update regarding the addition of a mechanical petrol pump to the Wraith III and Phantom III Series 2 chassis. | 26th Apr 1937 | Box 149 \ 4 scan0256 | |
| Request to issue an official order to the S.U. Company for one spherical single unit pump. | 27th Apr 1937 | Box 149 \ 4 scan0257 | |
| The return of an S.U. single unit pump, a spherical double pump, and G.5. diaphragms assemblies. | 27th Apr 1937 | Box 149 \ 4 scan0258 | |
| The despatch of an attached petrol pump to Mr. Crawford for Sg's car. | 27th Apr 1937 | Box 149 \ 4 scan0259 | |
| Arranging for parts to be ready for fitting the 3rd pump scheme, LeC.5378. | 28th Apr 1937 | Box 149 \ 4 scan0260 | |
| Under-bonnet temperature readings for the petrol pumps on a 35-EX Phantom III. | 28th Apr 1937 | Box 149 \ 4 scan0261 | |
| Questioning the received wisdom that spare petrol pumps must be kept wet with petrol to remain functional. | 28th Apr 1937 | Box 149 \ 4 scan0262 | |
| Withdrawal of standardisation sheet X.no.1263 and its replacement for a pump scheme on the Phantom III. | 28th Apr 1937 | Box 149 \ 4 scan0263 | |
| Deterioration of spare petrol pumps and their diaphragms when stored under the bonnet without petrol. | 29th Apr 1937 | Box 149 \ 4 scan0264 | |
| Examination report on the issues found with S.U. petrol pumps for a Phantom III vehicle. | 2nd May 1937 | Box 149 \ 4 scan0265 | |
| Conflicting reports on petrol pump failures due to vapour lock on car 35-EX. | 4th May 1937 | Box 149 \ 4 scan0266 | |
| Production and delivery schedule for S.U. petrol pumps. | 5th May 1937 | Box 149 \ 4 scan0267 | |
| Petrol pump vapourisation investigation for car 35-EX. | 5th May 1937 | Box 149 \ 4 scan0268 | |
| Performance and testing of petrol pumps, referencing a 12,482-mile test on car 34-EX. | 5th May 1937 | Box 149 \ 4 scan0269 | |
| Request for the approximate cost of making an S.U. magnet pot from mild steel. | 6th May 1937 | Box 149 \ 4 scan0270 | |
| Requesting a new scheme for routing the petrol and exhaust pipes on the Phantom III and Wraith chassis. | 10th May 1937 | Box 149 \ 4 scan0271 | |
| Proposal to replace the two-piece petrol pump bracket with a one-piece die-casting on the 25/30 HP chassis, foregoing the usual road test. | 10th May 1937 | Box 149 \ 4 scan0272 | |
| Experimental work on petrol pumps to address vapour lock issues for the 'Nairobi car'. | 14th May 1937 | Box 149 \ 4 scan0273 | |
| Letter from The S.U. Carburetter Co. Ltd. regarding a guarantee on diaphragms. | 14th May 1937 | Box 149 \ 4 scan0274 | |
| Follow-up letter to AC-Sphinx Sparking Plug Co. Ltd. requesting particulars for a T type pump. | 19th May 1937 | Box 149 \ 4 scan0275 | |
| Request to complete the scheme for fitting an A.C. combined vacuum and fuel pump to the Wraith engine. | 20th May 1937 | Box 149 \ 4 scan0276 | |
| Ongoing vapour lock troubles with the Phantom III model, referencing previous conference minutes and test results. | 20th May 1937 | Box 149 \ 4 scan0277 | |
| Engine stalling and restarting issues experienced in traffic. | 20th May 1937 | Box 149 \ 4 scan0278 | |
| Letter from AC-Sphinx regarding delayed delivery curves for 'T' type pumps. | 20th May 1937 | Box 149 \ 4 scan0279 | |
| Letter from AC-Sphinx Sparking Plug Co. Ltd. regarding blueprints for a fuel pump. | 19th May 1937 | Box 149 \ 4 scan0280 | |
| Graph of vapor lock tests on an AC combination fuel pump and vacuum booster on a 1935 Pontiac Six. | 1st Jul 1935 | Box 149 \ 4 scan0281 | |
| Chart detailing vapor lock test results for an AC combination fuel pump and vacuum booster on a 1935 Pontiac Six. | 1st Nov 1935 | Box 149 \ 4 scan0282 | |
| Performance chart for a Type AJ pump showing delivery and static pressure against speed. | 14th May 1937 | Box 149 \ 4 scan0283 | |
| Letter from AC-Sphinx Sparking Plug Co. regarding the shipping of a type 'AJ' combined fuel pump sample from their associates in Flint, Michigan. | 14th May 1937 | Box 149 \ 4 scan0284 | |
| Continuation sheet from AC-Sphinx Sparking Plug Co. regarding the dispatch of a filter and instrument panel. | 5th Apr 1937 | Box 149 \ 4 scan0285 | |
| Performance results of a pump test. | 5th Apr 1937 | Box 149 \ 4 scan0286 | |
| Graph showing the output and pressure curve from a test on a 'T' type fuel pump. | 20th May 1937 | Box 149 \ 4 scan0287 | |
| The order of tools for producing a forging shown on an attached drawing. | 22th May 1937 | Box 149 \ 4 scan0288 | |
| Technical report on vapour lock and petrol pump troubles, detailing the problem's evolution and future testing plans. | 22th May 1937 | Box 149 \ 4 scan0289 | |
| Letter to Superflexit Ltd. reporting on the results of a 20,000-mile test on a flexible petrol pipe from a Phantom III. | 24th May 1937 | Box 149 \ 4 scan0290 | |
| Requesting the dispatch of a flexible pipe to Superflexit Ltd. | 24th May 1937 | Box 149 \ 4 scan0291 | |
| Letter from S.U. Carburetter Co. Ltd. regarding a set of case-hardened steel rollers. | 25th May 1937 | Box 149 \ 4 scan0292 | |
| Request for the petrol pumps from vehicle 37-EX for examination and repair. | 27th May 1937 | Box 149 \ 4 scan0293 | |
| Inquiry to James Booth Ltd. regarding the properties and price of Beryllium Bronzes for use as rollers. | 27th May 1937 | Box 149 \ 4 scan0294 | |
| Letter from Superflexit detailing the examination of a special Petrol Pipe from a Phantom III chassis. | 28th May 1937 | Box 149 \ 4 scan0295 | |
| Letter from Superflexit Limited concerning the presence of cellulose in filters and tubes. | 28th May 1937 | Box 149 \ 4 scan0296 | |
| Design change for the brass fittings on an S.U. pump. | 28th May 1937 | Box 149 \ 4 scan0297 | |
| Letter to The S.U. Company Ltd. regarding nuts and unions for Bentley pumps. | 28th May 1937 | Box 149 \ 4 scan0298 | |
| Letter to The S.U. Company Ltd. apologising for not sending the requested nuts. | 29th May 1937 | Box 149 \ 4 scan0299 | |
| Confirming a discussion about the supply programme for Phantom III petrol pumps. | 31th May 1937 | Box 149 \ 4 scan0300 | |
| Request for the return of a high-pressure pump from car 38-EX for examination and to provide the car's total mileage. | 31th May 1937 | Box 149 \ 4 scan0301 | |
| Petrol starvation tests conducted on car model 35-EX, under various temperature conditions. | 31th May 1937 | Box 149 \ 4 scan0302 | |
| Tests investigating engine hesitation and high-speed fuel starvation due to petrol temperature. | 31th May 1937 | Box 149 \ 4 scan0303 | |
| Analysis of fuel pipe placement and its effect on vehicle performance and vapour lock. | 31th May 1937 | Box 149 \ 4 scan0304 | |
| Test results and analysis regarding temperature reduction and fuel starvation by repositioning a pipe outside the vehicle frame. | 31th May 1937 | Box 149 \ 4 scan0305 | |
| Requesting a cutter be ground on the inside diameter to .605' concentric with the outside diameter. | 31th May 1937 | Box 149 \ 4 scan0306 | |
| Service troubles report for Bentley 3 ½ and 4 ¼ Litre models from the week ending May 29th. | 2nd Jun 1937 | Box 149 \ 4 scan0307 | |
| Use of aluminium washers versus copper asbestos washers for joints. | 2nd Jun 1937 | Box 149 \ 4 scan0308 | |
| Requesting the despatch of 24 magnet pots for Phantom III high pressure pumps to the S.U. Company. | 2nd Jun 1937 | Box 149 \ 4 scan0309 | |
| Cover letter for an enclosed list of S.U. petrol pumps removed from Bentley chassis during May 1937. | 3rd Jun 1937 | Box 149 \ 4 scan0310 | |
| List of S.U. petrol pumps removed from Bentley chassis during May 1937, detailing complaints and speedometer readings. | 2nd Jun 1937 | Box 149 \ 4 scan0311 | |
| Instruction to change the diaphragm specification from two layers of oil silk to a single layer due to trapped air issues. | 3rd Jun 1937 | Box 149 \ 4 scan0312 | |
| Official order for 200 pumps from the S.U. Company. | 3rd Jun 1937 | Box 149 \ 4 scan0313 | |
| Request for the manufacture of two types of end cutters and 48 cyanide hardened steel rollers. | 3rd Jun 1937 | Box 149 \ 4 scan0314 | |
| Letter to The S.U. Company Ltd. confirming a change to the number of oil silk layers used in diaphragms. | 3rd Jun 1937 | Box 149 \ 4 scan0315 | |
| Letter to S.U. Co. Ltd. requesting an alteration to the armature diameter for high-pressure pumps. | 4th Jun 1937 | Box 149 \ 4 scan0316 | |
| Letter to James Booth & Co. Ltd. requesting a quotation for Beryllium bronze rods. | 4th Jun 1937 | Box 149 \ 4 scan0317 | |
| The examination and repair of failed S.U. petrol pumps from vehicle 3-AX-99. | 4th Jun 1937 | Box 149 \ 4 scan0318 | |
| Supply schedule and issues with S.U. petrol pumps for the Phantom III frame. | 4th Jun 1937 | Box 149 \ 4 scan0319 | |
| Status update on the production and supply of high-pressure pumps and cost analysis for magnet pots. | 2nd Jun 1937 | Box 149 \ 4 scan0320 | |
| The examination of S.U. petrol pumps from vehicle 3-AX-99, detailing a failure and subsequent repair. | 4th Jun 1937 | Box 149 \ 4 scan0321 | |
| Letter chasing the delivery of a combined vacuum and fuel pump from AC-Sphinx Sparking Plug Co. Ltd. | 5th Jun 1937 | Box 149 \ 4 scan0322 | |
| The examination and faults found in an S.U. Petrol Pump from chassis 3-AZ-63. | 5th Jun 1937 | Box 149 \ 4 scan0323 | |
| Conclusion from an examination regarding a customer's unit failure, possibly page 2 of a report. | 5th Jun 1937 | Box 149 \ 4 scan0324 | |
| Ordering and fitting of high-pressure petrol pumps for the Phantom III to address vapour trouble. | 7th Jun 1937 | Box 149 \ 4 scan0325 | |
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