Lincoln Corsair Manuals

Lincoln Corsair: Rear Drive Halfshafts / Diagnosis and Testing - Rear Drive Halfshafts

Lincoln Corsair 2020-2022 Service Manual / Chassis / Driveline / Rear Drive Halfshafts / Diagnosis and Testing - Rear Drive Halfshafts

Preliminary Inspection

  1. Visually inspect the CV joints, housing, boots, and clamps for obvious signs of mechanical damage.
  1. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step
  1. If the cause is not visually evident, verify the symptom and REFER to Symptom Chart: NVH.

Symptom Chart(s)

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).

Symptom Chart: NVH

  Symptom Chart


Condition Actions
Driveline clunk - loud clunk when shifting from REVERSE to DRIVE   GO to Pinpoint Test A
Driveline clunk — occurs as the vehicle starts to move forward following a stop   GO to Pinpoint Test B
Grunting — normally associated with a shudder experienced during acceleration from a complete stop   GO to Pinpoint Test C
Driveline vibration - occurs at cruising speeds   GO to Pinpoint Test D

Pinpoint Tests


PINPOINT TEST A: DRIVELINE CLUNK- LOUD CLUNK WHEN SHIFTING FROM REVERSE TO DRIVE

Normal Operation and Fault Conditions

Halfshafts transmit rotary motion through constant velocity joints in a uniform manner. The outer CV joints use balls, have no length compensation and engage in the wheel hubs. The inner CV joints use balls, have length compensation, and are locked in to the differential by a snap-ring. The inner  CV  joints use balls, have length compensation, and are locked in to the differential by a snap-ring.

Possible Sources

  • Damaged or worn Constant Velocity (CV) joints
  • Loose hub nut
A1 CHECK THE HUB NUT TORQUE
  • Check the hub nut torque

Is the hub nut loose?
Yes Tighten the hub nut to specification.
REFER to: Wheel Bearing and Wheel Hub - AWD (204-02 Rear Suspension, Removal and Installation).
No GO to A3

A2 CHECK THE TORQUE ON SUSPENSION AND STEERING SYSTEM FASTENERS
  • Check the front lower arm nut torque
  • Check the rear lower arm nut torque
  • Check the tie rod nut torque
  • Check the rear shock absorber mounting fasteners torque
  • Check the stabilizer bar link nut torque
  • Check the upper arm nut torque (If equipped)

Is the any of the suspension and steering fastener loose?
Yes Tighten the fastener to specification.
REFER to: Front Lower Arm (204-02) .
REFER to: Rear Lower Arm (204-02) .
REFER to: Rear Shock Absorber (204-02) .
REFER to: Rear Stabilizer Bar (204-02) .
REFER to: Rear Stabilizer Bar Link (204-02) .
REFER to: Wheel Knuckle (204-02) .
No GO to A3

A3 CHECK THE CONSTANT VELOCITY (CV) BOOTS AND JOINTS FOR WEAR OR DAMAGE
  • Check the constant velocity (cv) boots and joints for wear or damage

Was damage found?
Yes Inspect the CV joints and halfshaft. Replace components as necessary.
REFER to: Rear Halfshaft (205-05 Rear Drive Halfshafts, Removal and Installation).
REFER to: Rear Halfshaft (205-05 Rear Drive Halfshafts, Removal and Installation).
REFER to: Rear Halfshaft RH - 1.5L EcoBoost (132kW/180PS) – I3 (Y1) (205-05 Rear Drive Halfshafts) .
No Inspect the vehicle for any other symptoms related to the halfshafts.

PINPOINT TEST B: DRIVELINE CLUNK — OCCURS AS THE VEHICLE STARTS TO MOVE FORWARD FOLLOWING A STOP

Normal Operation and Fault Conditions

Halfshafts transmit rotary motion through constant velocity joints in a uniform manner. The outer CV joints use balls, have no length compensation and engage in the wheel hubs. The inner CV joints use balls, have length compensation, and are locked in to the differential by a snap-ring. The inner  CV  joints use balls, have length compensation, and are locked in to the differential by a snap-ring.

Possible Sources

  • Loose hub nut
B1 CHECK FOR LOOSE HUB NUT
  • Check for loose hub nut.

Are any hub nuts loose?
Yes Tighten to specifications.
REFER to: Rear Halfshaft (205-05 Rear Drive Halfshafts, Removal and Installation).
REFER to: Rear Halfshaft (205-05 Rear Drive Halfshafts, Removal and Installation).
REFER to: Rear Halfshaft RH - 1.5L EcoBoost (132kW/180PS) – I3 (Y1) (205-05 Rear Drive Halfshafts) .
REFER to: Wheel Bearing and Wheel Hub - AWD (204-02 Rear Suspension, Removal and Installation).
No Inspect the vehicle for any other symptoms related to the halfshafts.

B2 CHECK THE TORQUE ON SUSPENSION AND STEERING SYSTEM FASTENERS
  • Check the front lower arm nut torque
  • Check the rear lower arm nut torque
  • Check the tie rod nut torque
  • Check the rear shock absorber mounting fasteners torque
  • Check the stabilizer bar link nut torque
  • Check the upper arm nut torque (If equipped)

Is the any of the suspension and steering fastener loose?
Yes Tighten the fastener to specification.
REFER to: Front Lower Arm (204-02) .
REFER to: Rear Lower Arm (204-02) .
REFER to: Rear Shock Absorber (204-02) .
REFER to: Rear Stabilizer Bar (204-02) .
REFER to: Rear Stabilizer Bar Link (204-02) .
REFER to: Wheel Knuckle (204-02) .
No GO to B3

B3 CHECK THE CONSTANT VELOCITY (CV) BOOTS AND JOINTS FOR WEAR OR DAMAGE
  • Check the constant velocity (cv) boots and joints for wear or damage

Was damage found?
Yes Inspect the CV joints and halfshaft. Replace components as necessary.
REFER to: Rear Halfshaft (205-05 Rear Drive Halfshafts, Removal and Installation).
REFER to: Rear Halfshaft (205-05 Rear Drive Halfshafts, Removal and Installation).
REFER to: Rear Halfshaft RH - 1.5L EcoBoost (132kW/180PS) – I3 (Y1) (205-05) .
No Inspect the vehicle for any other symptoms related to the halfshafts.

PINPOINT TEST C: GRUNTING — NORMALLY ASSOCIATED WITH A SHUDDER EXPERIENCED DURING ACCELERATION FROM A COMPLETE STOP

Normal Operation and Fault Conditions

Halfshafts transmit rotary motion through constant velocity joints in a uniform manner. The outer CV joints use balls, have no length compensation and engage in the wheel hubs. The inner CV joints use balls, have length compensation, and are locked in to the differential by a snap-ring. The inner  CV  joints use balls, have length compensation, and are locked in to the differential by a snap-ring.

Possible Sources

  • Halfshaft Constant Velocity (CV) joint binding
C1 CHECK THE OUTER CONSTANT VELOCITY (CV) JOINT FOR CORRECT SEATING INTO THE HUB
  • Check the outer constant velocity (cv) joint for correct seating into the hub.

Is the outer Constant Velocity (CV) joint seated correctly into the hub?
Yes Inspect the vehicle for any other symptoms related to the halfshafts.
No Repair as necessary.
REFER to: Rear Halfshaft (205-05 Rear Drive Halfshafts, Removal and Installation).
REFER to: Rear Halfshaft (205-05 Rear Drive Halfshafts, Removal and Installation).
REFER to: Rear Halfshaft RH - 1.5L EcoBoost (132kW/180PS) – I3 (Y1) (205-05 Rear Drive Halfshafts) .

PINPOINT TEST D: DRIVELINE VIBRATION - OCCURS AT CRUISING SPEEDS

Normal Operation and Fault Conditions

Halfshafts transmit rotary motion through constant velocity joints in a uniform manner. The outer CV joints use balls, have no length compensation and engage in the wheel hubs. The inner CV joints use balls, have length compensation, and are locked in to the differential by a snap-ring. The inner  CV  joints use balls, have length compensation, and are locked in to the differential by a snap-ring.

Possible Sources

  • Incorrectly seated Constant Velocity (CV) joint in the wheel hub
D1 CHECK THE OUTER CONSTANT VELOCITY (CV) JOINT FOR CORRECT SEATING INTO THE HUB
  • Check the outer CV joint for correct seating into the hub.

Is the outer Constant Velocity (CV) joint seated correctly into the hub?
Yes Inspect the vehicle for any other symptoms related to the halfshafts.
No Repair as necessary.
REFER to: Rear Halfshaft (205-05 Rear Drive Halfshafts, Removal and Installation).
REFER to: Rear Halfshaft (205-05 Rear Drive Halfshafts, Removal and Installation).
REFER to: Rear Halfshaft RH - 1.5L EcoBoost (132kW/180PS) – I3 (Y1) (205-05 Rear Drive Halfshafts) .
REFER to: Wheel Bearing and Wheel Hub - AWD (204-02 Rear Suspension, Removal and Installation).


Differential Seals

NOTICE: When installing shafts, do not allow splines to contact seals during installation or damage to the seals may occur.

Halfshaft seals are susceptible to the same types of damage as drive pinion seals if incorrectly installed. The seal bore must be clean and the lip handled carefully to avoid cutting or tearing it. The seal journal surface must be free of nicks, gouges and rough surface texture.

For information on differential seals,
REFER to: Rear Halfshaft Seal (205-02 Rear Drive Axle/Differential, Removal and Installation).
REFER to: Rear Halfshaft Seal (205-02 Rear Drive Axle/Differential, Removal and Installation).

    Specifications

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