Chevrolet Blazer/Jimmy 1969-1982 Repair Guide

Transfer Case

Print

FLUID LEVEL CHECK





Click image to see an enlarged view

Fig. Fig. 1 To check the transfer case fluid level, remove the filler plug ...



Click image to see an enlarged view

Fig. Fig. 2 ... then, if no fluid trickles out, add gear oil until the level is just below the edge of the opening



Click image to see an enlarged view

Fig. Fig. 3 When draining the transfer case fluid, first clean the dirt and dust from around the drain plug ...



Click image to see an enlarged view

Fig. Fig. 4 ... then loosen the drain plug



Click image to see an enlarged view

Fig. Fig. 5 Remove the plug and drain the transfer case's fluid into a suitable container

  1. With the truck parked on a level surface, remove the filler plug from the rear of the transfer case (behind the transmission). Be careful not to take out the drain plug at the bottom.
  2.  
  3. If lubricant seeps out, there is enough. If not, carefully insert a finger (watch out for sharp threads) and check that the level is up to the edge of the hole ( 1 / 2 in. below for full time four wheel drive).
  4.  
  5. Lubricant may be added with a suction gun or squeeze bulb. Conventional transfer cases require SAE 80 or 90 GL-5 Gear Lubricant; full time systems use 10W-30 or 10W-40 engine oil through 1980. Dexron II is used in transfer cases from 1981.
  6.  

No intervals are specified for changing transfer case lubricant, but it is a good idea for trucks that are worked hard or driven in deep water.

  1. With the transfer case warmed up, park on a level surface.
  2.  
  3. Slide a pan of at least 6 pts. capacity under the case drain plug.
  4.  
  5. Remove the filler plug from the rear of the transfer case (behind the transmission). Remove the drain plug from the bottom and allow the fluid to drain completely.
  6.  
  7. Wipe the area clean and replace the drain plug.
  8.  
  9. Add lubricant with a suction gun or squeeze bulb. Conventional transfer cases require SAE 80 or 90 GL-5 Gear Lubricant; full time systems use 10W-30 or 10W-40 engine oil through 1980. Dexron II is used in transfer cases from 1981.
  10.  
  11. When the lubricant level is up to the bottom of the filler hole ( 1 / 2 in. below for full time four wheel drive), replace the plug.
  12.  

 
label.common.footer.alt.autozoneLogo