After rebabbitting a cylinder block be sure to form oil grooves in the main bearings. (See Fig. 1226.) K. R. Wilson furnishes a tool for this purpose.
year: 1931
DE LUXE COUPE BACK WINDOW NOW ADJUSTABLE
The back window in the De Luxe Coupe has been changed from a stationary window to a window which can be raised or lowered. This change is now standard equipment on the De Luxe Coupe and can be obtained as special equipment at extra cost for those desiring it in standard coupe bodies. When a rumble seat is installed in a standard coupe the adjustable back window will be supplied at no extra charge. It will of course be necessary for the dealer to notify the Branch as adjustable back window installations must be made at the Branch.
Due to the amount of labor and expense involved it would not be practical for dealers to attempt to replace a stationary window with an adjustable window in old coupes.
TWO DESIGNS OF TRUCK REAR HUBS
Truck rear hubs AA-1113-F2 and AA 1114-F2 are now being used in 100% production. In these hubs the bearing sleeve is made integral with the hub. This construction eliminates the AA-1236-C rear hub sleeve and the A-23225 sleeve retainer rivet. The AA-1113-F2 and AA-1114-F2 hubs can be used interchangeably with the AA-1113-Fl and AA-1114-Fl hubs which have the sleeves installed.
TOP DRESSING
Top dressing should never be applied when a top is new, it should be applied only after the top material has become very dull, checked or cracked. It is also important that the correct top dressing is used with rubber and pyroxylin coated tops. Use M-255 for Pyroxylin coated tops only, Use M-255-B for Rubber coated tops only.
A-46116-R LOCK CYLINDER OBSOLETED
A-46116-R lock cylinder and key assembly has been obsoleted. If calls are received for this part after present stocks are exhausted, supply A-46123-E lock cylinder and A-11586-C key. The key can be cut on your key cutting machine and the tumblers in the lock cylinder then fitted to the key.
IDLER GEARS USED IN ELECTRIC WINDSHIELD WIPERS
To assist dealers in identifying the various fiber gears in the electric windshield wipers formerly used on the Model A, details of these gears are shown in Fig. 1207.
USE CARE IN STORING HEADLAMP REFLECTORS
Headlamp reflector surfaces that are exposed to sulphur fumes will turn the reflectors black. Rubber fumes from tires, etc., will also tarnish reflector surfaces. If any of these parts should become tarnished, they can be easily cleaned by dipping a soft cloth (preferably cotton flannel) into dry lamp black and rubbing the reflectors for a few minutes until their bright appearance has been restored.
LENGTH OF REAR FILLER BLOCK INCREASED
To still further increase the strength of the floor side sill rear filler block A-35081-R.H. and A-35082-L. H., used on Tudor and Touring Cars the length of these blocks has been changed from 3″ to 6″; the length of the bevel on the edge of the block has also been changed from 1 3⁄8” to 4 1⁄8”. (See Fig. 1208.)
CORRECTION (July 1931)
Please refer to Fig. 1192 in the June Service Bulletin and change the width of the slot shown in A-11357-BR starter drive service sleeve, from 3⁄4″ to 1⁄2″.
SUPPORT SPRING STRENGTHENED
To still further increase the strength of the A-6031 engine front support auxiliary spring, a flange has been added around the hole for the engine support stud and a bead added next to the hole. (See Fig. 1224.) This type of construction materially increases the strength of this part.
STARTER DRIVE SERVICE SUGGESTIONS
Three different type starter drive assemblies have been used on Ford cars, namely:
T-5018-1883 drive-Used on Model T cars.
A-11350-DR drive-Service replacement for the Abell drive used on early Model A cars.
A-11350-C drive-used in present production and service.
While the parts used in these drives resemble each other somewhat, there is considerable difference in their construction.
To avoid starter drive failure, it is absolutely essential that only the correct type parts are used with each type of drive. The following parts should be closely checked:
SHAFT SCREWS
Three different shaft screws have been used with the different types of starter drives used in Ford cars.
The shaft screws used with the Model T starter drive (T-5018-1883) are 5/8“ long and are carried under symbol No. T-5023-1983. (See Fig. 1189.)
The shaft screw A-11382-BR used on the early Model A starter replacement drive was a headless screw. (See Fig. 1189.)
The shaft screw A-11382-A used on the present Model A starter drive is 11/16” long. (See Fig. 1189.)
Under no circumstances should a T-5023-1983 screw be used in replacement of an A-11382-A screw, as the screw would doubtless pull out or break off at the head as it is shorter and was not designed for use with the heavier Model A drive spring. The A-11382-A screw can, however, be used in replacement of the T-5023-1983 screw.
To avoid any possibility of confusing or mixing these screws, carefully check your stock and make certain that no “T” screws are mixed with the “A” screws.
After present stocks are exhausted, we will obsolete the T-5023-1983 shaft spring screw and use the present design A-11382-A screw for any “T” replacements.
HEAD SPRING SCREWS
Fig. 1190 shows the different type starter head spring screws used in Ford cars. None of these screws can be used interchangeably due to the differences in design and material. Your stock of these parts should be carefully checked and kept segregated. T-5024-1781 is used with the “T” drive. A-11377-DR is used with the early replacement drive. A-11377-C is used with the present “A” drive.
STARTER DRIVE SPRING
Fig. 1191 indicates the distinguishing dimensions of the various size starter drive springs used in Ford cars. None of these springs can be used interchangeably. Check and segregate your stock. T-5022-2006 is used with the “T” drive. A-11375-DR is used with the replacement drive. A-11375-C is used with the present “A” drive
STARTER DRIVE SERVICE SLEEVES
Service sleeves installed on the various type starter drives used in Ford cars are shown in Fig. 1192. As none of these sleeves can be used interchangeably, care must be used to segregate stock so as to avoid mixing of any of these parts. T-2008-X is used with the “T” drive. A-11357-BR used with replacement drive. A-11357-A used with present “A” drive.
STARTER DRIVE HEAD
Fig. 1195 shows the different type starter drive heads used on Ford cars. None of these parts are interchangeable and under no circumstances should they be confused or mixed.
The A-11381-C can be distinguished from the A-11381-DR and T-5019-2007, by the bore diameter. The A-11381-C has a 5/8“ bore, the other two heads have but 1⁄2″. The T-5019-2007 and the A-11381-DR heads can be distinguished by the difference in the thread length of the tapped screw hole. The tapped hole in the A-11381-DR is approximately 5/16” deep. In the T-5019-2007 it is approximately 3⁄8” deep. Check and segregate your stock.