Jeep CJ/Scrambler 1971-1986 Repair Guide

Transfer Case


See Figures 1, 2 and 3


The transfer case should be checked in the same manner as the manual transmission. The level should be up to the filler hole. Use the same viscosity oil as in the transmission. The filler hole is on the right side. Check the oil level at the top hole. The bottom one is for draining.

Some NP-207 models have a two piece fill plug, i.e., a small threaded plug inside a larger one. If your transfer case is so equipped, the fluid level is checked at the bottom of the smaller plug. To remove the smaller plug, hold the larger one firmly with a wrench while removing the smaller plug.

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Fig. Fig. 1: Dana 300 transfer case drain and fill plugs

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Fig. Fig. 2: The transfer case drain plug can be removed through the hole in the skid plate

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Fig. Fig. 3: Remove the transfer case fill plug with a wrench, the level is correct when fluid runs out of the fill hole


All manual transfer cases are to be serviced at the same time and in the same manner as the manual transmissions. The transfer case has its own drain plug which should be opened. Do not rely on the transmission drain plug to completely drain the transfer case, even if they are interconnected. Once the transfer case has been drained, replace the drain plug, remove the fill plug and fill the transfer case. The Dana and Spicer transfer cases used SAE 80W-90 gear oil.