Checking the timing gear and fuel injection pump drive parts (engine 1KZ-T) [Toyota Land Cruiser J70]

1. Measure the inside diameter of the idler gear.

Nominal size - 44.0-44.025 mm

2. Measure the outside diameter of the idler gear shaft.

Nominal size - 43.965-44.0 mm

3. Calculate the clearance between the shaft and the idler gear.

If the gap is greater than the permissible value (0.025-0.06, maximum 0.2 mm) - replace the idler gear assembly together with the shaft.

4. Smooth rotation of the fuel injection pump drive gear bearing; replace if necessary.

5. Check the engagement clearance (nominal 0.02-0.15 maximum 0.2 mm) If at least one engagement is greater than the permissible value, replace all gears.













(The material was taken from a resource www.ToyotaMan.ru)

Note: The idler gear must be without compensation gears for these checks.

6. If necessary, replace the crankshaft seals and fuel injection pump drive gears, see section "Replacing oil seals".