Transfer Case Leak Diagnosis
WARNING: This page is about a different car, the 2007 Suzuki XL7. However, it is still accessible from the selected car via links, so may be relevant.
CAUSES - TRANSFER CASE LEAK DIAGNOSIS
| Cause | Correction |
|---|---|
| Drain and fill the unit with new oil with ultraviolet dye J 28431-6 before using the J 28428-E black light, when inspecting for leaks. | |
| Restricted or damaged ventilation assembly | Replace the ventilation assembly, as required. |
| Worn, scored, or missing drain and/or fill plug sealing washers | Install new drain plugs and tighten the plugs per specifications. |
| Worn or damaged input or output shaft oil seal | Replace the output shaft oil seal, as required. |
| Cut or damaged output housing O-ring seal | Replace the O-ring seal, as required. |
| Worn internal shaft oil seals Worn or damaged internal shaft oil seals may be detected by a fluid leak at the vent hole area on the bottom of the cover. |
Replace the oil seals, as required. |
| Worn or damaged right side axle shaft oil seal | Replace the axle shaft oil seal and axle shaft, as required. |
| Cut or damaged transaxle assembly-to-transfer case O-ring seals | Replace the O-ring seals, as required. |
| Cases or housings porosity or leaking seal surfaces | Replace the transfer case assembly if it cannot be repaired. |