DIAGNOSIS CHART
CONDITION
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POSSIBLE CAUSE
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CORRECTION
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Transfer case difficult to shift or will not shift into desired range.
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1) Transfer case electronically controlled shift system malfunction.
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1) Verify proper operation per the appropriate diagnostic manual.
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2) Insufficient or incorrect lubricant.
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2) Drain and refill transfer case with the correct quantity
of Mopar® NV245/247 Transfer Case Fluid.
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3) Internal transfer case components binding, worn, or damaged.
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3) Repair or replace components as necessary.
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Transfer case noisy in all drive modes.
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1) Insufficient or incorrect lubricant.
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1) Drain and refill transfer case with the correct quantity of Mopar® NV245/247
Transfer Case Fluid.
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2) Internal transfer case components binding, worn, or damaged.
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2) Repair or replace components as necessary.
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Transfer case noisy while in, or jumps out of, 4LO.
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1) Transfer case not completely engaged in 4LO position.
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1) While rolling 2-3 MPH and the transmission in NEUTRAL shift the transfer
case to the AWD or 4LOCK position, and then back into the 4LO position.
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2) Range fork, input gear, or range sleeve damaged, inserts worn,
or fork is binding on the shift rail.
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2) Repair or replace components as necessary.
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3) Low range gear worn or damaged.
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3) Repair or replace components as necessary.
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Lubricant leaking from transfer case seals or vent.
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1) Transfer case overfilled.
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1) Drain
lubricant to the correct level.
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2) Transfer case vent closed or restricted.
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2) Clean
or replace vent as necessary.
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3) Transfer case seals damaged or installed incorrectly.
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3) Replace suspect seals. Inspect and replace, if necessary, the seal slinger on the output flange associated with the damaged seal.
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