1984-1989 Toyota 4Runner Idler Arm Replacement

crwdns2931653:01crwdne2931653:0 Idler Arm




• WARNING: Injury may result if this procedure is not followed properly. Use caution and follow all warnings.
• First the truck should be prepared to be worked on.
• Disconnect the negative battery terminal from the battery in order to be sure that no electrical current is running through the truck.
• Set the parking break and put the truck in 1st gear.
• Be sure to chock the wheels, so that it will not roll while you are underneath.
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• Locate the idler arm.
• It can be found underneath the vehicle, next to the front passenger tire bolted onto the frame.
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• The first step is to remove the set nut holding the arm to the relay rod.
• Begin with cleaning any oil and dirt from the set nut and then spray with the penetrating lubricant.
• Once the spray has sat for 5 minutes, use needle nose pliers to straighten the cotter pin and pull it out.
• During reassembly, never reuse a cotter pin. A new one should be included in a new arm. If a new arm is not purchased then one can be purchased from an auto parts store.
• Remove the set nut using a 19 mm socket.
• When installing the arm this nut should be torqued to 43 ft.-lb.
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• Now that the relay rods are disconnected, the arm can be unbolted from the frame.
• Spray both the bolts and the nuts with the penetrating lubricant.
• On the bolt head use the breaker bar and 17 mm socket; put the 17 mm box wrench on the nut on the back side of the arm.
• The wrench will get stuck on the frame and the breaker bar can then be used to break the rust off the bolt holding it onto the frame.
• Once the bolt is loose a socket wrench can replace the breaker bar to make the job easier.
• The (2) 4 1/4" bolts go on either side of the arm. The (1) 3 1/2" bolt goes at the top.
• All three bolts should be torqued to 70 ft-lb when putting the arm back on.
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• To separate the arm from the relay rods, a hammer may be used to gently tap up on the idler arm.
• Do not hit down on the relay rods; doing so may cause damage and require them to be replaced.
• A pitman arm puller can be used if the hammer is not able to knock it loose.
• The idler arm can now be removed from the frame.
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Colton Baker

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University of Memphis, Team 1-1, Kim Fall 2015 crwdns2935289:0University of Memphis, Team 1-1, Kim Fall 2015crwdne2935289:0

UM-KIM-F15S1G1

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