Checking rear wheel trim

Calculate the difference between distance "B" and distance "A" and compare (see: TECHNICAL CHARACTERISTICS AND SPECIFICATIONS - CHECKS AND ADJUSTMENTS - FRONT TRIM) the resulting value with the specified values.

NOTE: If the values are incorrect, replace both the suspension springs.

CHECKING REAR WHEEL TRIM

PRELIMINARY OPERATIONS

Wheel trim should be checked after the following operations and checks have been completed:

• tyres inflated to the specified pressure (see: REPAIR INSTRUCTIONS - BODYWORK - GR. 28 - WHEELS AND TYRES).
• Vehicle placed on a lift.
• Vehicle set in accordance with one of the following loading conditions:
  • running condition
  • static load (specified refill quantities and weight distribution as shown).
• Rock the vehicle a few times to settle the suspension.

1. Position the abutting tool on the resting plane of the vehicle.
2. Using a surface gauge measure distance "C" between the resting plane of the vehicle and the fulcrum of the rear swinging arm.

• Using a millimeter rule measure the distance.

3. Using the surface gauge measure distance "D" between the resting surface of the vehicle and the rear wheel centre line.

• Using a millimeter rule measure the distance.
• Calculate the distance between the distance "C" and distance "D" and compare (see: TECHNICAL CHARACTERISTICS AND SPECIFICATIONS - CHECKS AND ADJUSTMENTS - REAR TRIM) the resulting value with the specified values.

NOTE: If the values are incorrect, replace both the suspension springs.

CHECKING CHARACTERISTIC ANGLES

The characteristic angles should be checked after the following operations and checks have been completed:

• tyres inflated to the specified pressure (see: REPAIR INSTRUCTIONS - BODYWORK - GR. 28 - WHEELS AND TYRES).
• check that eccentricity and orthogonality of the wheels does not exceed:
  • 1 mm for steel rims
  • 0.3 mm for alloy rims.
• check that there is no clearance between wheel support and articulated pin of swinging arm.
• check that there is no axial play on the wheel bearings.