Front Axle

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The 1200s' front axle (spindle) is an integral part of the Strut assembly. The spindle, grease catcher, and knuckle arm (steering arm) complete the "Front axle".

Also see:

• Brakes
• Front Suspension

Overview

Front Axle

Knuckle Arm

The "Knuckle arm" (steering arm) bolts to the balljoint, and the strut is bolted on top of the knuckle arm. Datsun knuckle arms come in two basic sizes:

• narrow bolt spacing for 45mm strut tubes (used by B110)
• wide bolt spacing for 50.8 mm strut tubes (used by most other Datsuns)

Additionally, the size of the taper hole for the ball joint is important.

• B110 uses the small taper
• Most others use a large taper

Then there is the length of the arm -- long arme give a slower steering response, but less effort is required to turn the wheels. Short arms give faster response.

The good news is there is only one size for B110. See the part numbers below.

B310 Steering Knuckle Arms

B310

Part Numbers

steering arm
40052 = Knuckle Arm RH
40053 = Knuckle Arm LH

Knuckle Arm RH

• B10: 40052-18000 (different from newer models)
• B110: 40052-H1000 <- 40052-H5000
• PB110: 40052-H2501
• B120: 40052-H5000 to 1974, 40052-H7400 (75-8504), 40052-H7440 (8504-)
• B210: 40052-H5000 (74-75 A12)
• B210: 40052-H7400 (1976-up A engine, except USA)
• B210: 40052-U0101 (USA, also PB, also L16)
• B310: 40052-W5000 (All US, all A15, most A14)
• B310: 40052-H7200 (A12, A13, and budget A14 models)
• B310: 40052-W5060 (big engines, 8001-up)