Toyota 2H valve adjustment specs
 

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  Toyota 2H valve adjustment specs
 
 

The Toyota 2H diesel engine was a 3.980 litre inline-6 engine offered on many Land Cruiser models throughout the world.

The instructions and images are taken from the Toyota 2H Engine Repair Manual. © Toyota Motor Corporation.

Disclaimer: I don't guarantee this information to be 100% accurate, nor can I help you if you're not familiar with your engine and how to go about servicing it. This is a simple service procedure, but if you are not mechanically inclined or are inexperienced in performing service on your Land Cruiser, have it done by a trusted mechanic.

 

  Adjustment of Valve Clearences
   
    1. Warm Up Engine

Allow engine to reach normal operating temperature.

    2. Remove cylinder head cover
  3. Set No. 1 cylinder to TDC / compression
(a) Align the groove on the pulley with the timing pointer by turning the crankshaft clockwise with a wrench.
 
(b) Check that the rocker arms on the No. 1 cylinder are loose and rocker arms on the No. 6 cylinder are tight.
 
If not, turn the crankshaft one revolution (360°) and align the mark as above.
 

4. Adjust valve clearences
(a) Measure only those valves indicated by arrows.
 
Valve clearance (Hot):
 
Intake 0.20 mm (0.008 in.)
Exhaust 0.36 mm (0.014 in.)
  • Using a feeler gauge, measure the valve clearance between the valve stem and rocker arm. Loosen the lock nut and turn the adjusting screw to set the proper clearance. Hold the adjusting screw in position and tighten the lock nut.
  • Recheck the valve clearance. The feeler gauge should slide with a very slight drag.
(b) Turn the crankshaft one revolution (360°) and align the mark as above.
Adjust only the valves indicated by arrows.
 
Measure only those valves indicated by the arrows.
5. Install cylinder head cover.
 

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