NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTING
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NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTINGPFP:00003
NVH Troubleshooting ChartEDS000I4
Use the chart below to help you find the cause of the problem.The numbers indicate the order of the inspec-
tion. If necessary, repair or replace these parts.
Reference page
Refer to MA section("Checking Transfer Fluid"
("CHASSIS AND BODY MAINTENANCE").
TF-13
TF-13TF-22TF-22
Possible cause and Suspected parts
FLUID (Level low)
FLUID (Wrong)
FLUID (Level too high)
LIQUID GASKET (Damaged)
OIL SEAL (Worn or damaged)
GEAR (Worn or damaged)
BEARING (Worn or damaged)
SymptomNoise 1 2 3 3
Fluid leakage 3 1 2 2
jumps out of gear 1
TF-22
TRANSFER ASSEMBLY
4. Using a flat-bladed screwdriver, remove the oil seal.
CAUTION:
Be careful not to damage the transfer case.
5. Remove the oil defense.
6. Using a brass rod, tap the adjusting shim evenly from the 2 cut-
outs on the transfer case to remove the adjusting shim and gear
ring bearing outer race.
7. Remove the filler plug, and breather tube.
INSPECTION AFTER DISASSEMBLY
Gears
●Check the gear faces and shaft for wear, cracks, damage, and seizure.
CAUTION:
If a malfunction is detected on the drive gear or drive pinion gear, replace the drive gear and drive pin-
ion gear as a set.
Bearings
●Check for seizure, peeling, wear, corrosion, sticking/abnormal noise/roughness in hand turning, and other
damage.
CAUTION:
When replacing the bearing, always replace the inner race and outer race as a pair.
Washers and shims
●Check for seizure, damage, and abnormal wear.
Oil seals
●Discard old oil seals; replace with new ones.
●If wear, deterioration of adherence (sealing force of lips), or damage is detected on the lips, replace them.
TFB0297D
SDIA0535E
SDIA0536E
