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TRANSFER CASE (PART TIME 4408) 5D1-3 Cannot Front Wheel Drive when Shifted 4H,4L DIAGNOSIS Electric Shift Problems Action Overhaul and check, replace if necessary. Overhaul and check for wear and damage. Replace if necessary. Check sliding parts, replace if necessary. Checks Faulty or Damaged TCCU, Speed Sensor, Motor, Clutch or Internal Wirings Damaged or Worn Shift Cam, Hub, Fork and Rail Shift Binding Shift Fork, Hub Collar or Gear Checks Broken Drive Chain Action Check sliding parts, replace if necessary. Noise in 4WD Operation Checks Improper or low oil Loosened bolts or mounted parts Noisy T/C bearing Noisy gears Action Drain and replace with specified oil. Retighten as specified. Disassemble bearings and parts and check for wear or damage. Replace if necessary. Check for wear and damage including speedometer gear, replace if necessary. Noise in 4H or 4L Checks Worn or Damaged Sprockets or Drive Chain Incorrect Tire Pressure Action Disassemble and check for wear and damage, replace if necessary. Adjust tire pressure. Transfer Case Oil Leakage Action Replace the case. Clean case and parts and check for leakage. Remove breather hose and clean, replace if necessary. Use specified oil and adjust oil level. Retighten Use specified sealant and retighten. Replace Checks Cracked Transfer Case Leakage from Other Parts Breather Clogging Improper or too much Oil Loosened Sealing Bolts Improperly Applied Sealant Worn or Damaged Oil Seal |