LEMON Manuals: Even more car manuals for everyone
Home >> Buick >> 2007 >> Lucerne CX >> Repair and Diagnosis >> External Pages >> Different car >> Section 209 (Rear Drive Axle) >> Diagnostic Information and Procedures >> Rear Differential Carrier Leak Diagnosis

Rear Differential Carrier Leak Diagnosis

WARNING: This page is about a different car, the 2006 Pontiac Montana SV6, 2006 Chevrolet Uplander, and 2006 Buick Terraza. However, it is still accessible from the selected car via links, so may be relevant.
Rear Differential Carrier Leak Diagnosis

Cause Correction
GM P/N 12378514 Hypoid Gear Oil has ultraviolet dye already included within the oil.
Drain and fill the unit with new oil before using the J 28428-E  black light, when inspecting for leaks. See Special Tools . Ultraviolet dye J 28431-6  is not approved for use. See Special Tools .
Restricted or damaged ventilation tube assembly Replace the ventilation tube as required.
Worn, scored or missing drain and/or fill plug sealing washers Install new sealing washers and tighten the plugs per specifications.
Worn or damaged drive pinion oil seal
  1. Inspect the torque tube propeller shaft oil seal surface for excessive wear or damage.
  2. Inspect the torque tube propeller shaft bearings for wear or damage. A worn bearing may allow excessive movement of the propeller shaft within the torque tube.
  3. Replace the components as required.
Cut or damaged drive pinion housing O-ring seal Replace the O-ring seal as required.
Worn or damaged axle shaft oil seals Replace the axle shaft oil seals as required.
Cut or damaged clutch pump check valve O-ring seals Replace the O-ring seals as required.
Leaking clutch pump check valve Replace the clutch pump check valve assembly.
Carrier housing porosity or a leaking side cover seal surface Replace the differential assembly.
scientia non olet · About LEMON Manuals