| Description | Date | Identifier | |
| Complaints and technical issues with the Phantom III model. | 25th Aug 1938 | Box 107 \ 2 scan0027 | |
| Various engine and chassis issues and their proposed remedies. | 25th Aug 1938 | Box 107 \ 2 scan0028 | |
| Log of axle modifications and reported issues at various mileages. | 2nd May 1935 | Box 107 \ 2 scan0029 | |
| Log of tests, modifications, and repairs conducted on a noisy axle. | 17th Oct 1938 | Box 107 \ 2 scan0030 | |
| Requesting the production of 50 sets of an anti-rattle device for a Bentley steering column for further testing. | 22th Dec 1938 | Box 107 \ 2 scan0031 | |
| Technical note specifying clutch wear allowances and spring deflection. | 12th Oct 1938 | Box 107 \ 2 scan0032 | |
| Customer complaints and guidance for service stations on handling incurable issues like gear rattles and collapsed filter elements. | 12th Oct 1938 | Box 107 \ 2 scan0033 | |
| Instructions for customers on testing dual petrol pumps to prevent road failures. | 12th Oct 1938 | Box 107 \ 2 scan0034 | |
| List of customer complaints and depot criticisms for the Phantom III model. | 10th Oct 1938 | Box 107 \ 2 scan0035 | |
| List of technical issues and criticisms for the 25/30 HP and Bentley models. | 10th Oct 1938 | Box 107 \ 2 scan0036 | |
| Correcting information regarding the supply of Starter Button Pig Tails discussed in a Service Complaints conference. | 1st Nov 1937 | Box 107 \ 2 scan0037 | |
| Customer complaints and technical issues with the 25/30 HP model. | 29th Aug 1938 | Box 107 \ 2 scan0038 | |
| The use of a grinding tool for valve seats and methods for dispensing oil at various depots. | 29th Aug 1938 | Box 107 \ 2 scan0039 | |
| Blueprint for a modified valve spring washer with an oil seal. | 23th Aug 1938 | Box 107 \ 2 scan0040 | |
| Minutes of a conference held to discuss customer complaints and improve inter-departmental relationships regarding defects. | 26th May 1937 | Box 107 \ 2 scan0041 | |
| Remedies for engine flooding and clutch issues on the Phantom III model. | 26th May 1937 | Box 107 \ 2 scan0042 | |
| Petrol pump efficiency, engine overheating in traffic, and transmission clonk on starting. | 26th May 1937 | Box 107 \ 2 scan0043 | |
| Issues and proposed solutions for Phantom III and 25/30 HP Horst models. | 26th May 1937 | Box 107 \ 2 scan0044 | |
| Technical report discussing issues with Bentley models including rear wheel drive, axles, pedals, and brakes. | 26th May 1937 | Box 107 \ 2 scan0045 | |
| Report page discussing oil consumption, component life, steering modifications, and depot feedback on accessibility. | 26th May 1937 | Box 107 \ 2 scan0046 | |
| Meeting minutes discussing inter-departmental cooperation, material supply, and complaint reporting procedures. | 20th Dec 1938 | Box 107 \ 2 scan0047 | |
| Investigation report on faulty soldering and overheating of a Dynamo for Chassis 3.AZ.72. | 20th Dec 1938 | Box 107 \ 2 scan0048 | |
| Cost analysis for engine bearing maintenance on a Bentley model. | 20th Dec 1938 | Box 107 \ 2 scan0049 | |
| Material card listing part numbers, quantities, and prices for three items. | 8th Apr 1938 | Box 107 \ 2 scan0050 | |
| Clock card detailing engine work including tightening nuts, adjusting tappets, and fixing a water leak. | 8th Apr 1938 | Box 107 \ 2 scan0051 | |
| List of questions and cost analysis regarding methods of dealing with Bentley bearings. | 13th Jun 1941 | Box 107 \ 2 scan0052 | |
| Log detailing the labor hours and tasks for engine work on a Bentley vehicle at the Paris Depot. | 13th Jun 1941 | Box 107 \ 2 scan0053 | |
| Labour cost and time breakdown for a bottom decarbonisation job. | 13th Jun 1941 | Box 107 \ 2 scan0054 | |
| Cost analysis for decarbonization services on two different models. | 13th Jun 1941 | Box 107 \ 2 scan0055 | |
| Cost analysis for a top decarbonisation job. | 13th Jun 1941 | Box 107 \ 2 scan0056 | |
| Cost calculation for a modification and rebore job. | 3rd May 1938 | Box 107 \ 2 scan0057 | |
| Job cost sheet for decarbonisation work, detailing labour hours, rates, and total cost. | 3rd May 1938 | Box 107 \ 2 scan0058 | |
| Costing sheet for a 'Top Decarb' service on two Bentley models, 140HK and 200FB. | 3rd May 1938 | Box 107 \ 2 scan0059 | |
| Cost analysis for two separate engine jobs, detailing labour hours, rates, and material costs. | 3rd May 1938 | Box 107 \ 2 scan0060 | |
| Test observations and measurements related to bearings and oil flow. | 27th May 1936 | Box 107 \ 2 scan0061 | |
| Return of hydraulic dampers from Cricklewood to investigate if complaints and replacements were justified. | 27th May 1936 | Box 107 \ 2 scan0062 | |
| Modifications, costs, and material specifications for various parts, primarily concerning the Phantom III model. | 30th Nov 1936 | Box 107 \ 2 scan0063 | |
| Cost analysis for tightening bearings on chassis B-154-GA for Mr Ferroud. | 30th Nov 1936 | Box 107 \ 2 scan0064 | |
| Analysis of cost for tightening bearings with the crankshaft in position on chassis B.10.GA. | 15th Dec 1936 | Box 107 \ 2 scan0065 | |
| Cost analysis for tightening up the bearings with the crankshaft in position for chassis B.122.GA. | 21th Dec 1936 | Box 107 \ 2 scan0066 | |
| Cost analysis for tightening bearings on Chassis B260-GA for Mr Embiricos. | 18th Dec 1936 | Box 107 \ 2 scan0067 | |
| Cost and operations for replacing engine bearings and connecting rods on a Bentley 3 1/2 Litre engine. | 19th Aug 1937 | Box 107 \ 2 scan0068 | |
| Outlining service work procedures for fitting rebored cylinders or changing piston rings on 25/30 & Bentley models. | 19th Aug 1937 | Box 107 \ 2 scan0069 | |
| List of operations for lowering a cylinder block onto pistons. | 19th Aug 1937 | Box 107 \ 2 scan0070 | |
| Blueprint diagram illustrating the process of lowering a cylinder head onto a 6-cylinder engine block. | 19th Aug 1937 | Box 107 \ 2 scan0071 | |
| Blueprint diagram illustrating a procedure for lifting a cylinder head off an engine block. | 19th Aug 1937 | Box 107 \ 2 scan0072 | |
| Diagram of a six-cylinder engine block with the cylinder head being lifted by a hoist. | 30th Jun 1939 | Box 107 \ 2 scan0073 | |
| Chart of complaints for the Bentley 4 1/4 litre engine, tracking issues from January to June 1939. | 30th Jun 1939 | Box 107 \ 2 scan0074 | |
| Chart logging engine failures for 3 1/2 and 4 1/4 litre Bentley models for the year 1939. | 1st Jan 1939 | Box 107 \ 2 scan0075 | |
| Chart tracking engine performance issues and modifications from January to June 1939. | 1st Jun 1939 | Box 107 \ 2 scan0076 | |
| Blueprint chart tracking reported mechanical faults by month for the first half of 1939. | 30th Jun 1939 | Box 107 \ 2 scan0077 | |
| Bar chart tracking reported clutch and brake system faults from January to June 1939. | 30th Jun 1939 | Box 107 \ 2 scan0078 | |
| Bar chart tracking vehicle faults and their causes from January to June 1939. | 1st Jan 1939 | Box 107 \ 2 scan0079 | |
| 1939 chart tracking vehicle faults and average mileage over a six-month period. | 1st Jan 1939 | Box 107 \ 2 scan0080 | |
| Bar chart tracking complaints and modifications for the Bentley 4¼ Litre engine from July to December 1938. | 1st Dec 1938 | Box 107 \ 2 scan0081 | |
| Charts detailing engine failures and complaints for 3 1/2 and 4 1/4 Litre Bentley models up to December 1938. | 31th Dec 1938 | Box 107 \ 2 scan0082 | |
| Bar chart of vehicle complaints for 4¼ and Bentley models from July to December 1938. | 31th Dec 1938 | Box 107 \ 2 scan0083 | |
| Two-part bar chart from 1938 tracking vehicle complaints by month, with the lower chart specific to Bentley models. | 23th Nov 1938 | Box 107 \ 2 scan0084 | |
| Bar chart of customer complaints for the 4¼ Bentley model for the second half of 1938. | 1st Jan 1938 | Box 107 \ 2 scan0085 | |
| Blueprint chart tracking customer complaints for the 4 1/4 litre Bentley engine during the first half of 1938. | 1st Jan 1938 | Box 107 \ 2 scan0086 | |
| Line chart tracking the number of complaints for various 4¼ Bentley components from January to June 1938. | 1st Jun 1938 | Box 107 \ 2 scan0087 | |
| Line graph charting the number of complaints for a 4 1/4 Bentley over several months in 1938. | 1st Jun 1938 | Box 107 \ 2 scan0088 | |
| Line chart tracking various customer complaints for the 4¼ Bentley model from January to June 1938. | 1st Jun 1938 | Box 107 \ 2 scan0089 | |
| Line chart tracking complaints for the 4¼ Litre Bentley across six categories from January to June 1938. | 30th Jun 1938 | Box 107 \ 2 scan0090 | |
| Chart tracking the number of complaints for the 4 1/4 Bentley in 1938. | 30th Jun 1938 | Box 107 \ 2 scan0091 | |
| Line chart tracking customer complaints for the 4¼ litre Bentley model from January to June 1938. | 30th Jun 1938 | Box 107 \ 2 scan0092 | |
| Customer complaints and proposed solutions for the Phantom III model. | 8th Jul 1938 | Box 107 \ 2 scan0093 | |
| Modifications and complaints regarding clutches, speedometer drives, and 25/30 HP components. | 8th Jul 1938 | Box 107 \ 2 scan0094 | |
| Ongoing issues and modifications for various Bentley components. | 8th Jul 1938 | Box 107 \ 2 scan0095 | |
| Phantom III top gear coming out of mesh and a query about possible modifications. | 12th Jul 1938 | Box 107 \ 2 scan0096 | |
| Stuck drain ball valves on 25/30 HP carburettors. | 12th Jul 1938 | Box 107 \ 2 scan0097 | |
| Bent driving shafts in a Bentley Chassis B.15.HM following a customer complaint about a knock in the rear axle. | 12th Jul 1938 | Box 107 \ 2 scan0098 | |
| Misunderstandings regarding the re-conditioning of worn bushes in hydraulic type rockers for the Phantom III. | 24th Jun 1938 | Box 107 \ 2 scan0099 | |
| Methods to avoid the expense of re-boring cylinders by rectifying oil consumption issues. | 8th Jun 1938 | Box 107 \ 2 scan0100 | |
| Cylinder re-grinds and the mileage at which they are typically required for different car models. | 3rd Jun 1938 | Box 107 \ 2 scan0101 | |
| Investigation into recurring complaints of damper knocks and the actions taken. | 10th Jun 1938 | Box 107 \ 2 scan0102 | |
| Testing and subsequent actions taken for various chassis dampers. | 7th May 1938 | Box 107 \ 2 scan0103 | |
| Log detailing the testing, inspection, and repair actions taken on chassis dampers. | 21th Apr 1938 | Box 107 \ 2 scan0104 | |
| Log detailing the inspection and repair actions taken on rear dampers for various chassis. | 31th May 1938 | Box 107 \ 2 scan0105 | |
| The location of a car for investigation of a high pressure petrol pump. | 20th Jun 1938 | Box 107 \ 2 scan0106 | |
| The investigation into a carburetter popping issue on Chassis 3-DL-36. | 20th Jun 1938 | Box 107 \ 2 scan0107 | |
| Faults and proposed modifications for the 25/30 HP carburetter. | 20th Jun 1938 | Box 107 \ 2 scan0108 | |
| Discussion with the Duke of Kent's chauffeur regarding long roads in Germany. | 18th Jun 1938 | Box 107 \ 2 scan0109 | |
| Arrival and fitting of six KLG.FLB.50.X plugs to a customer's car. | 20th Jun 1938 | Box 107 \ 2 scan0110 | |
| Bentley clutch complaints, causes of 'jagger', and issues with plates and rivets, with reference to an enclosed chart. | 20th Jun 1938 | Box 107 \ 2 scan0111 | |
| Correcting chassis numbers for the Phantom III. | 22th Jun 1938 | Box 107 \ 2 scan0112 | |
| List of customer complaints regarding poor oil consumption and test results for various chassis. | 20th Jun 1938 | Box 107 \ 2 scan0113 | |
| List of vehicle chassis, their mileage, and their corresponding oil consumption figures. | 20th Jun 1938 | Box 107 \ 2 scan0114 | |
| Amendment to a depot sheet regarding the change-over of ammeters on various car models. | 16th Jun 1938 | Box 107 \ 2 scan0115 | |
| Listing current and previous part numbers for brake shoes on various car models. | 18th Jun 1938 | Box 107 \ 2 scan0116 | |
| The second page of a memorandum asking for a response regarding an arrangement for two depots. | 18th Jun 1938 | Box 107 \ 2 scan0117 | |
| Status and distribution of the Bentley Charts. | 8th Jun 1938 | Box 107 \ 2 scan0118 | |
| Letter discussing a customer's complaint about oil consumption, fair wear and tear under guarantee, and causes of cylinder wear. | 26th May 1938 | Box 107 \ 2 scan0119 | |
| Technical report discussing engine cylinder wear, oil consumption, and customer liability for 'fair wear and tear'. | 26th May 1938 | Box 107 \ 2 scan0120 | |
| Vehicle repair costs, mileage targets, and oil consumption. | 26th May 1938 | Box 107 \ 2 scan0121 | |
| Report comparing depot methods for dealing with complaints, chiefly concerning Bentley engine work and bearing failures. | 23th May 1938 | Box 107 \ 2 scan0122 | |
| Comparison of engine maintenance procedures and labour hours between different depots. | 23th May 1938 | Box 107 \ 2 scan0123 | |
| Breakdown of labour hours for engine maintenance procedures including top and bottom decarbonisation. | 23th May 1938 | Box 107 \ 2 scan0124 | |
| Recommendations for dealing with Bentley 4 1/4 litre engines at service depots. | 23th May 1938 | Box 107 \ 2 scan0125 | |
| Recommendations for engine modifications B and C concerning bearing problems, including labour hours and fitting instructions. | 23th May 1938 | Box 107 \ 2 scan0126 | |
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