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.
year: 1931
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.
Oil Grooves in Main Bearings
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.
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.
OVERHEATING
Should you encounter Model “A” cars or “AA” trucks that are overheating, always check the radiator splash plate to make certain it has been changed in accordance with instructions given on page 450 in the April 1930 Service Bulletin, also check the timing. Should the water in a radiator be allowed to get very low, causing a car or truck to overheat, always allow it to cool off a little before pouring cold water into the radiator, or keep engine running.
LUBRICATING SHOCK ABSORBERS
When lubricating shock absorber connecting links, the pressure gun should be held on the lubricator fitting until lubricant escapes from both the top and bottom of the link. (See Fig. 1183.) Some mechanics are failing to do this, as a result the upper ball joint does not receive lubrication and results in premature wear and a noisy shock absorber.