Rear Axle

Revision as of 03:41, 24 June 2007; view current revision
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The Datsun 1200 used a leaf-spring live axle with an H145 differential. This is a Hitachi design with 145mm ring gear. It is a lightweight unit suitable to handle the torque from an A12 engine. Light weight is good. Heavy parts take more horsepower to accelerate.

Also see Rear Axle Swaps.

Maintainence

The stock Datsun 1200 differential is a reliable, long lasting part behind an A12 or A13 engine.

1. As long as it doesn't run dry on gear lube it will usually last forever. So check it every few months for signs of leaking.
2. The only common maintainence is to pack the rear wheel bearings every two years or so. This will also keep the bearings quiet and reduce gear lube leakage into the brake area.

Differential Lubricant

Since the differential is a typical hypoid-gear unit, you can use any lubricant designed for such:

• the traditional "90 weight" gear oil
• the newer 75W140 multi-weight gear oil

For maximum fuel economy, use a modern multi-weight gear oil.

The original specifications (which are still OK to use) are:

• Specification: API GL-4MIL-L-2105
  • CHEVRON Multiservice Gear Lub. 75,80,90,140
  • ESSO Gear Oil GP80,90,140
  • MOBIL Mobilube EP or GX80-90, 90, 140
  • SHELL Spirax 75EP,80EP, 90EP, 140EP
  • SUNOCO Multipurpose GearLub. GL-480,90,140
  • TEXACO Universal Gear Lub.EP80,90,140

reference: Owners manual
Online Owner's Manual

Part Numbers

Suppliers - USA

• Nissan
• RockAuto differential parts
• http://www.partsamerica.com

Rear Axle Seal

• Nissan 43252-H1000 SEAL-OIL REAR AXLE SHAFT

Rear Axle Bearing

• Nissan 43215-18000 BEARING-REAR AXLE
• Nissan 43255-H1000 COLLAR-REAR AXLE BEARING

NOTE: 180 is B10 part number, so B10 and B110 should interchange

Differential Axle Bearing
1.1811 in. I.D; 0.6299 in. width; Fits H145 & H150.
Taper Bearing Assembly: Cone Length=0.6299" Bore=1.1811" Outer Diameter=2.4409" Width=0.6791" Cup Length=0.5512" Cone Radius=0.06" Cup Radius=0.06"}
Application: Alfa, Mitsubishi, Ford, Mazda, Nissan, Plymouth, Porsche, Subaru
PartsAmerica

• SKF BR30206 - $16.99
• BCA 30206 - $29.99
• Motor City S30206 - $9.88

RockAuto.com

• TIMKEN Part # 30206M - $14.96
• BCA/NATIONAL Part # 30206 - $16.74

Pinion Seal
B110, through 1974 model year B210. Probably fits B10 as well.
Partsamerica.com pinion seal

• SKF Oil Seal #550219 $22.99

Pinion Bearing
Fits many cars, GM, Nissan, Isuzu, Mazda, Opel, etc
Taper Bearing Assembly: Cone Length=0.7874" Bore=1.1811" Outer Diameter=2.4409" Width=0.8366" Cup Length=0.6693" Cone Radius=0.06" Cup Radius=0.06"}
Rockauto

• BCA/NATIONAL Part # 32206 - $19.84

Partsamerica

• SKF BR32206 - $18.99