Repair Instruction: Precaution

1. HINTS ON OPERATIONS
   Fig 1: Identifying Basic Repair Operations

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. JACKING UP AND SUPPORTING VEHICLE
   1. Care must be taken when jacking up and supporting the vehicle. Be sure to lift and support the vehicle at the proper locations.
3. PRECOATED PARTS
   1. Precoated parts are bolts and nuts that are coated with a seal lock adhesive at the factory.
   2. If a precoated part is retightened, loosened or moved in any way, it must be recoated with the specified adhesive.
   3. When reusing a precoated part, clean off the old adhesive and dry the part with compressed air. Then apply new seal lock adhesive appropriate to that part.
   4. Some seal lock agents harden slowly. You may have to wait for the seal lock adhesive to harden.
      Fig 2: Identifying Seal Lock Adhesive

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. GASKETS
   1. When necessary, use a sealer on gaskets to prevent leaks.
5. BOLTS, NUTS AND SCREWS
   1. Carefully follow all the specifications for tightening torques. Always use a torque wrench.
6. FUSES
   1. When inspecting a fuse, check that the wire of the fuse is not broken.
   2. When replacing fuses, be sure that the new fuse has the correct amperage rating. Do not exceed the rating or use one with a lower rating.
      Fig 3: Identifying Correct & Incorrect Fuses

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      PART DESCRIPTION TABLE
      
      

      Graphic	Symbol	Part Name	Abbreviation
      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002	Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002	FUSE	FUSE
      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002	Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002	MEDIUM CURRENT FUSE	M-FUSE
      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002	Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002	HIGH CURRENT FUSE	H-FUSE
      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002	Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002	FUSIBLE LINK	FL
      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002	Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002	CIRCUIT BREAKER	CB

7. clips
   1. The removal and installation methods of typical clips used for vehicle body parts are shown in the table below.

      HINT:

      If clips are damaged during a procedure, always replace the clips with new clips.

      REMOVAL AND INSTALLATION METHODS OF TYPICAL CLIPS FOR VEHICLE BODY PARTS
      
      

      Shape (Example)	Graphic	Procedures
      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002	Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002	Remove clips with a clip remover or pliers.
      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002	Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002	Remove clips with a clip remover or screwdriver.
      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002	Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002	Remove clips with a wide scraper to prevent panel damage.
      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002	Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002	Remove clips by pushing the center pin through and prying out the shell.
      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002	Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002	Remove clips by unscrewing the center pin and prying out the shell.
      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002	Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002	Remove clips by prying out the pin and then prying out the shell.

8. CLAWS
   1. The removal and installation methods of typical claws used for vehicle body parts are shown in the table below.

      HINT:

      If claws of caps or covers are damaged during a procedure, always replace the caps or covers with new ones.

      REMOVAL AND INSTALLATION METHODS OF TYPICAL CLAWS FOR VEHICLE BODY PARTS
      
      

      Shape (Example)	Graphic	Procedures
      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002	Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002	Using a screwdriver, detach the claws and remove the caps or covers.
      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002	Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002	Using a screwdriver, detach the claws and remove the caps or covers.
      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002	Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002	Using a screwdriver, detach the claws and remove the caps or covers.

9. REMOVAL AND INSTALLATION OF VACUUM HOSES
   1. To disconnect a vacuum hose, pull and twist from the end of the hose. Do not pull from the middle of the hose as this may cause damage.
      Fig 4: Identifying Correct & Incorrect Method Of Disconnecting Vacuum Hose

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   2. When disconnecting vacuum hoses, use tags to identify where they should be reconnected.
   3. After completing any hose related repairs, double check that the vacuum hoses are properly connected. The label under the hood shows the proper layout.
   4. When using a vacuum gauge, never force the hose onto a connector that is too large. If a hose has been stretched, it may leak air. Use a step-down adapter if necessary.
      Fig 5: Identifying Tags On Replacement Parts

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
10. TORQUE WHEN USING TORQUE WRENCH WITH EXTENSION TOOL
    Fig 6: Identifying Length Of Extension Tool & Torque Wrench

    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Use the formula below to calculate special torque values for situations where SST or an extension tool is combined with a torque wrench.
       Fig 7: Identifying Length Of SST & Torque Wrench

       Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

       Formula: 

       T' = L2/(L1 + L2) * T 

       FORMULA DESCRIPTION CHART
       
       

       T'	Reading of torque wrench {N*m (kgf*cm, ft.*lbf)}
       T	Torque {N*m (kgf*cm, ft.*lbf)}
       L1	Length of SST or extension tool {cm, (in.)}
       L2	Length of torque wrench {cm (in.)}

       NOTE: If an extension tool or SST is combined with a torque wrench and the wrench is used to tighten to a torque specification in this article, the actual torque will be excessive and parts will be damaged.

The TOYOTA TUNDRA is equipped with a Supplemental Restraint System (SRS). The SRS of this vehicle consists of the following:

1. Steering pad
2. Front passenger airbag assembly
3. Curtain shield airbag assembly
4. Front seat side airbag assembly
5. Center airbag sensor assembly
6. Front airbag sensor
7. Side airbag sensor
8. Seat position airbag sensor
9. Door side airbag sensor
10. Occupant classification ECU
11. Front seat outer belt assembly with pretensioner
    CAUTION:

    • Failure to carry out service procedures in the correct sequence could cause SRS parts to unexpectedly deploy and possibly lead to serious injuries. Furthermore, if a mistake is made when servicing SRS parts, they may fail to operate when required. Before performing servicing (including installation/removal, inspection and replacement of parts), be sure to read the following precautions.
    • Before starting work, wait at least 90 seconds after the ignition switch is turned OFF and after the cable of the negative (-) battery terminal is disconnected. (SRS parts are equipped with a backup power source. If work is started within 90 seconds of turning the ignition switch OFF and disconnecting the cable from the negative (-) battery terminal, SRS parts may deploy.)
    • Do not expose SRS parts directly to hot air or flames.