| Description | Date | Identifier | |
| Enquiry about fitting shells to connecting rods on a Bentley Chassis. | 9th Sep 1937 | Box 131 \ 2 scan0046 | |
| Flooding carburetter on a Phantom III vehicle, attributing the cause to debris found inside. | 9th Sep 1937 | Box 131 \ 2 scan0047 | |
| Condition of con rods and bearing shells for chassis B-117-JY after a top decarb. | 10th Sep 1937 | Box 131 \ 2 scan0048 | |
| Complaint about a noisy rear axle on a Bentley Chassis B-145-GP, attributing the fault to insufficient hardening of the pinion. | 10th Sep 1937 | Box 131 \ 2 scan0049 | |
| Requesting more information about a pinion bearing with a broken cage. | 11th Sep 1937 | Box 131 \ 2 scan0050 | |
| Broken cage in a pinion bearing and rattling complaints related to driving dogs. | 15th Sep 1937 | Box 131 \ 2 scan0051 | |
| Damaged ball race from Bentley Chassis B-81-HM, caused by the propeller shaft splines. | 15th Sep 1937 | Box 131 \ 2 scan0052 | |
| Recurring drive rattle issue with the driving dogs on a Bentley chassis B-177-CW. | 15th Sep 1937 | Box 131 \ 2 scan0053 | |
| Broken cage in a pinion bearing and issues with driving dogs. | 15th Sep 1937 | Box 131 \ 2 scan0054 | |
| Procedure and requirements for repairing connecting rods at Kingsbury Depot. | 18th Sep 1937 | Box 131 \ 2 scan0055 | |
| Oil pressure readings from Mr Lappin's car (B.117.JY) prior to engine dismantling. | 21th Sep 1937 | Box 131 \ 2 scan0056 | |
| The investigation and rectification of a thump and oil consumption issue on a Bentley Chassis B-202-GA. | 21th Sep 1937 | Box 131 \ 2 scan0057 | |
| Examination of six sets of KLG.FE. ignition plugs for the Phantom III. | 21th Sep 1937 | Box 131 \ 2 scan0058 | |
| Supply and fitting of Bentley pistons and their impact on oil consumption. | 21th Sep 1937 | Box 131 \ 2 scan0059 | |
| Requesting a correction to a chart of Bentley Bearings and Crankshafts. | 21th Sep 1937 | Box 131 \ 2 scan0060 | |
| Telegram received by telephone requesting a short pendulum lever for a customer's car. | 23th Sep 1937 | Box 131 \ 2 scan0061 | |
| Telegram confirming the despatch of a pendulum lever by post. | 23th Sep 1937 | Box 131 \ 2 scan0062 | |
| Main bearing, oil pressure, and connecting rod failures for a Bentley engine, chassis No. B.117.JY. | 30th Sep 1937 | Box 131 \ 2 scan0063 | |
| Analysis of connecting rod failures in 4¼-litre engines, discussing contributing factors like oil pressure and over-revving. | 30th Sep 1937 | Box 131 \ 2 scan0064 | |
| Analysis of engine bearing tightening issues, clearances, and their effect on oil consumption and pressure. | 30th Sep 1937 | Box 131 \ 2 scan0065 | |
| Analysis of bearing preload or nip in big end and crankcase journal bearings. | 30th Sep 1937 | Box 131 \ 2 scan0066 | |
| Investigation into a case of engine bearing thump and piston knock, detailing the diagnosis and rectification process. | 30th Sep 1937 | Box 131 \ 2 scan0067 | |
| Photograph of main bearing upper halves from Unit E.S.B.G., Chassis B.117 J.Y., after 13,101 miles. | 13th Oct 1937 | Box 131 \ 2 scan0068 | |
| Forwarding a broken Bentley front axle control ball pin for inspection. | 13th Oct 1937 | Box 131 \ 2 scan0069 | |
| Customer's faulty battery complaint and the proposed actions for examination and replacement. | 13th Oct 1937 | Box 131 \ 2 scan0070 | |
| Faults and potential repairs for two Bentley gearbox third motion shafts. | 13th Oct 1937 | Box 131 \ 2 scan0071 | |
| 24 worn tappets dismantled from chassis 3.AX.167 after a mileage of 13,224. | 14th Oct 1937 | Box 131 \ 2 scan0072 | |
| Response to an Owner's Complaint Report (No.W.51) clarifying a potential engine knock cause related to bearing clearance. | 16th Oct 1937 | Box 131 \ 2 scan0073 | |
| Examination and potential repair of Bentley Gearbox 3rd motion shafts. | 16th Oct 1937 | Box 131 \ 2 scan0074 | |
| Report investigating a recurring issue with a bad set of tappets on chassis 3-AX-107. | 21th Oct 1937 | Box 131 \ 2 scan0075 | |
| Page detailing the need to replace a damaged camshaft on a Phantom III. | 21th Oct 1937 | Box 131 \ 2 scan0076 | |
| Forwarding particulars on rocker pads bought from the Wolseley Co. regarding their special case hardening method. | 27th Oct 1937 | Box 131 \ 2 scan0077 | |
| List of faults from past models, compiled from service complaints, to inform the development of the Wraith. | 11th Nov 1937 | Box 131 \ 2 scan0078 | |
| Engine faults, complaints, and proposed improvements across various models. | 1st Nov 1937 | Box 131 \ 2 scan0079 | |
| List of faults and cures for engine, starter motor, and exhaust systems, continued on page 2. | 1st Nov 1937 | Box 131 \ 2 scan0080 | |
| Summary of complaints and issues related to vehicle transmission components. | 1st Nov 1937 | Box 131 \ 2 scan0081 | |
| Various faults, issues, and modifications related to vehicle brakes. | 1st Nov 1937 | Box 131 \ 2 scan0082 | |
| Issues and solutions related to vehicle suspension systems. | 1st Nov 1937 | Box 131 \ 2 scan0083 | |
| Steering-related issues, their causes, and the models affected. | 1st Nov 1937 | Box 131 \ 2 scan0084 | |
| List of miscellaneous component failures and issues observed in various car models. | 8th Nov 1937 | Box 131 \ 2 scan0085 | |
| Faulty axle from chassis B-58-KT with scored teeth and an oil leak. | 8th Nov 1937 | Box 131 \ 2 scan0086 | |
| Sludging and buckling issues with the Phantom III tappet filter. | 12th Nov 1937 | Box 131 \ 2 scan0087 | |
| Results of engine oil flow tests, comparing a worn engine to a recently overhauled one. | 20th Nov 1937 | Box 131 \ 2 scan0088 | |
| Diagram of a motor, reduction box, and clutch assembly connected to a pressurized fluid feed system. | 22th Nov 1937 | Box 131 \ 2 scan0089 | |
| Investigation report into faulty tappets from a Phantom III, chassis 3-AZ-55. | 22th Nov 1937 | Box 131 \ 2 scan0090 | |
| Comparing service complaints against the results from experimental and 10,000-mile tests. | 16th Nov 1937 | Box 131 \ 2 scan0091 | |
| Report detailing various engine faults and performance issues. | 16th Jul 1937 | Box 131 \ 2 scan0092 | |
| Summary list of faults and test findings for various vehicle components. | 16th Jul 1937 | Box 131 \ 2 scan0093 | |
| Log of reported faults and complaints concerning exhaust, transmission, and clutch systems. | 16th Jul 1937 | Box 131 \ 2 scan0094 | |
| Log of faults and experiments concerning propeller shafts, rear axles, and brakes. | 16th Jul 1937 | Box 131 \ 2 scan0095 | |
| Report detailing faults and investigations related to vehicle brakes and suspension systems. | 16th Jul 1937 | Box 131 \ 2 scan0096 | |
| Log of reported faults and observations for various vehicle components. | 3rd Dec 1937 | Box 131 \ 2 scan0097 | |
| Data on the average life and service mileage of spark plugs for the 25/30 and Bentley 4¼ models. | 3rd Dec 1937 | Box 131 \ 2 scan0098 | |
| Investigation into a customer complaint of a rear damper knock on a 20/25 HP chassis GRJ-57. | 15th Dec 1937 | Box 131 \ 2 scan0099 | |
| Phantom III engine overheating issues, listing affected chassis and the required steam valve adjustment. | 21th Dec 1937 | Box 131 \ 2 scan0100 | |
| Customer's complaint of steering wobbles and how to proceed with the owner. | 3rd Jan 1938 | Box 131 \ 2 scan0101 | |
| Summary of complaints for the 25/30 HP model regarding brake issues during January and February. | 3rd Mar 1938 | Box 131 \ 2 scan0102 | |
| Faults and their frequency across the carburetter, clutch, and engine. | 3rd Mar 1938 | Box 131 \ 2 scan0103 | |
| Faults and remarks on engine, electrical, and starter motor components. | 3rd Mar 1938 | Box 131 \ 2 scan0104 | |
| List of faults and their occurrence count for chassis lubrication, shock dampers, steering, and exhaust suspension. | 3rd Mar 1938 | Box 131 \ 2 scan0105 | |
| Categorized list of vehicle faults with a count of occurrences for each. | 3rd Mar 1938 | Box 131 \ 2 scan0106 | |
| Continued list of reported vehicle faults and complaints. | 3rd Mar 1938 | Box 131 \ 2 scan0107 | |
| Decision to revert to an original spring and the development of a new choke control scheme. | 24th Feb 1938 | Box 131 \ 2 scan0108 | |
| List of complaints regarding the Phantom III engine for January and February. | 4th Mar 1938 | Box 131 \ 2 scan0109 | |
| List of faults, remarks and modifications for engine and carburetter components. | 4th Mar 1938 | Box 131 \ 2 scan0110 | |
| List of reported faults and their frequency for steering, tyres, clutch, and transmission systems. | 4th Mar 1938 | Box 131 \ 2 scan0111 | |
| List of vehicle faults and proposed remedies for issues with brakes, servo, gearbox, starter motor, and dynamo. | 7th Mar 1938 | Box 131 \ 2 scan0112 | |
| Fault report detailing issues with various vehicle components like the rear axle, speedometer, clocks, horns, and petrol pumps. | 4th Mar 1938 | Box 131 \ 2 scan0113 | |
| Vehicle fault report detailing issues with ride comfort, radiator, bonnet, fan, springs, and hydraulic jacks. | 4th Mar 1938 | Box 131 \ 2 scan0114 | |
| Continued list of reported system faults and issues with their corresponding report counts. | 4th Mar 1938 | Box 131 \ 2 scan0115 | |
| Questioning the design of push rods with hydraulic tappets on a Phantom III following a failure. | 30th Mar 1938 | Box 131 \ 2 scan0116 | |
| Inviting personnel to lunch in connection with a works visit. | 5th Apr 1938 | Box 131 \ 2 scan0117 | |
| Arranging a Chassis Complaints Conference for Depot Managers. | 5th Apr 1938 | Box 131 \ 2 scan0118 | |
| List of Phantom III owners' engine complaints for the month of March. | 6th Apr 1938 | Box 131 \ 2 scan0119 | |
| Continued list of reported faults and their quantities for engines and Stromberg carburettors. | 6th Apr 1938 | Box 131 \ 2 scan0120 | |
| List of reported faults and their quantities for steering and clutch components. | 6th Apr 1938 | Box 131 \ 2 scan0121 | |
| Summary of reported faults and complaints for brakes, servo, gearbox, and dynamo systems. | 6th Apr 1938 | Box 131 \ 2 scan0122 | |
| List of reported faults and complaints for various vehicle components, continued from a previous page. | 6th Apr 1938 | Box 131 \ 2 scan0123 | |
| List of vehicle faults and their occurrences, categorized by system. | 6th Apr 1938 | Box 131 \ 2 scan0124 | |
| Engine complaints for the 25/30 HP model for March. | 8th Apr 1938 | Box 131 \ 2 scan0125 | |
| List of reported faults for Stromberg carburettors and brakes, with a count for each issue. | 8th Apr 1938 | Box 131 \ 2 scan0126 | |
| List of vehicle faults and their occurrences categorized by component. | 8th Apr 1938 | Box 131 \ 2 scan0127 | |
| List detailing faults found in various mechanical and electrical components, along with the number of occurrences for each fault. | 8th Apr 1938 | Box 131 \ 2 scan0128 | |
| Continued list of component failures and their tallied numbers. | 8th Apr 1938 | Box 131 \ 2 scan0129 | |
| Summary list of vehicle faults and customer complaints with corresponding counts. | 8th Apr 1938 | Box 131 \ 2 scan0130 | |
| Cover note for the agenda of a Chassis Complaints Conference. | 9th Apr 1938 | Box 131 \ 2 scan0131 | |
| Agenda for a conference discussing chassis complaints and the worst features of the Phantom III model. | 12th Apr 1938 | Box 131 \ 2 scan0132 | |
| List of common faults for the 25/30 HP and 20/25 HP models, suggested for discussion. | 12th Apr 1938 | Box 131 \ 2 scan0133 | |
| List of discussion points and worst features regarding Bentley vehicles, with handwritten annotations. | 9th Apr 1938 | Box 131 \ 2 scan0134 | |
| Announcing the agenda for a Chassis Complaints Conference to be held in Derby. | 9th Apr 1938 | Box 131 \ 2 scan0135 | |
| Agenda for a Chassis Complaints Conference, listing issues with the Phantom III model for discussion. | 12th Apr 1938 | Box 131 \ 2 scan0136 | |
| List of worst features for the 25/30 HP and 20/25 HP models, suggested for discussion. | 12th Apr 1938 | Box 131 \ 2 scan0137 | |
| Discussion document on Bentley vehicles, covering fuel, modifications, and a list of worst features. | 11th Apr 1938 | Box 131 \ 2 scan0138 | |
| Cover sheet for a series of charts showing the monthly position of complaints for the Bentley 4¼ Litre Chassis. | 11th Apr 1938 | Box 131 \ 2 scan0139 | |
| Line chart tracking the number of complaints for a 4 1/4 Bentley engine for the period of January to June 1938. | 30th Jun 1938 | Box 131 \ 2 scan0140 | |
| Line chart tracking various complaints for the 4¼ Bentley from January to June 1938. | 30th Jun 1938 | Box 131 \ 2 scan0141 | |
| Line graph charting customer complaints for Bentley 4 1/4 cars during the first half of 1938. | 1st Jan 1938 | Box 131 \ 2 scan0142 | |
| Chart of complaints for the 4¼ Bentley, graphing the number of faults from January to June 1938. | 1st Jan 1938 | Box 131 \ 2 scan0143 | |
| Chart tracking the number of complaints for a 4 1/4 Litre Bentley from January to June 1938. | 30th Jun 1938 | Box 131 \ 2 scan0144 | |
| Chart tracking customer complaints for the 4 1/4 Bentley model during the first half of 1938. | 30th Jun 1938 | Box 131 \ 2 scan0145 | |
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