Ford Mustang (1999-2004) Service Manual: Gear Howl and Whine

Howling or whining of the ring gear and pinion is due to an incorrect gear pattern, gear damage or incorrect bearing preload.

Wheel Hub or Axle Flange Face Runout
NOTE: If the axle shaft assembly is removed, check runout of the shaft itself. The forged (unmachined) part of the shaft is allowed to have as much as 3.0 mm (0.120 inch) runout. This alone will not ...

Bearing Whine
Bearing whine is a high-pitched sound similar to a whistle. It is usually caused by worn/damaged pinion bearings, which are operating at driveshaft speed. Bearing noise occurs at all driving speeds. ...

Other materials:

Installation
1. Make sure the anti-rattle spring is correctly positioned in the caliper. 2. CAUTION: Make sure guide pin boots are correctly seated or damage to guide pins can occur. Install the disc brake caliper. 1. Hold the guide pins stationary. 2. Inst ...

Differential Case and Ring Gear - Conventional
Special Tool(s) 2-Jaw Puller 205-D072 (D97L-4221-A) or equivalent Installer, Differential Side Bearing 205-010 (T57L-4221-A2) Step Plate 205-D061 (D83T-4205-C2) or equivalent ...

Installation
Using special tool 205-024 NOTE: This is the preferred method for installing the pinion bearing cups. If necessary, proceed to Using special tools 205-153, 205-024, 205-231, and 205-D055 in this procedure for an alternate method. 1. Position the special too ...