Section 4 · Pages 16–21 (6 pages)

Rear Axle

From the 1946 Buick Shop Manual Supplement

Changes to the 1946 Series 40-50-70 rear axle: a heavier ring and pinion gear set and differential case, a longer pinion bearing lock sleeve and the new Pinion Bearing Spacer J-1192B. A cutaway shows each change from 1942, and pinion setting tables give nominal micrometer readings for 1940–1946 models with Pinion Setting Gauges J-681A and J-2197, whose micrometer markings read in opposite directions.

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What this section covers

  • 1946 rear axle changes and parts interchangeability
  • Pinion bearing lock sleeve lengths
  • Pinion Bearing Spacer J-1192B
  • Pinion setting with gauges J-681A and J-2197
  • Pinion setting tables for plus and minus marked pinions
Year
1946
Make
Buick
Vehicle
Passenger Cars
Type
Service Manual, Supplement
Models
Special Series 40, Super Series 50, Roadmaster Series 70 (Models 41, 46-S, 51, 56-S, 56-C, 59, 71, 76-S, 76-C)
Publication
BPS 1.28
Pages
69

What’s inside

Shop manual supplement

  1. 0Contents and General Informationpp. 1–9
  2. 1BodyThe new cable-drive windshield wiper used on all 1946 series: motor and driver assembly on the dash, cable tensioner adjustment and installation. Notes that the Hydro-Lectric power top, windows and seat on Models 56-C and 76-C are covered in form BPS 1.29.pp. 10–11
  3. 2Frame and BumpersFrame bolt-hole spacing for the 1946 lower control arm shaft and frame interchangeability with 1942, front and rear bumper differences by series, and the hinged rear bumper section on the Model 59 Estate Wagon.pp. 12–13
  4. 3Chassis SuspensionEccentric upper pivot pins with rubber seals, the threaded lower control arm shaft and steel bushings with service package part numbers, shock absorber calibrations for Series 40-50 and 70, and chassis and overload spring part numbers by model.pp. 14–15
  5. 4Rear Axlepp. 16–21
  6. 5Brakes1946 brakes match 1942 except for molded primary shoe lining; advice on replacing primary shoes in pairs from the same carton.pp. 22–23
  7. 6Enginepp. 24–31
  8. 7Transmission and Universal JointLeather seal in the Series 40-50 torque ball and the speedometer gear tooth combinations for standard and optional high wheels by series and axle ratio.pp. 32–33
  9. 9SteeringCaster and camber adjustment with the eccentric upper pivot pins and a new service wheel alignment chart for 1942 and 1946 models, giving toe-in, camber, caster, king pin inclination and toe-out on turns.pp. 34–35
  10. 10Wheels and Tirespp. 36–39
  11. 11Chassis Sheet Metalpp. 40–43
  12. 12Electrical SystemStarter vacuum switch timing on Carter carburetors, AC 48 spark plugs, ignition coil and the silver-contact ignition switch for convertibles, flywheel timing marks and standard timing (4 degrees Series 40-50, 6 degrees Series 70), the rear license lamp and Model 59 stop and tail lamp wiring.pp. 44–46
  13. 12Radiopp. 47–55
  14. 14Accessoriespp. 56–61
  15. 15Tightening SpecificationsA new torque table in foot-pounds for 1942 and 1946 models, replacing the 1942 figures, covering engine, front suspension, steering, rear axle, shock absorber, brake and body bolts.pp. 62–63
  16. 16Lubricationpp. 64–68
  17. IndexAlphabetical subject index with section page numbers.pp. 69–69

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