2. Clean the cylinder block using a soft brush and solvent.
3. Check the warping of the plane of the cylinder block joint with the cylinder head.
Maximum warpage:
- l series - 0.20 mm
- kZ series - 0.10 mm
If the warpage exceeds the maximum permissible value, replace the cylinder block.
4. Check the cylinder mirror for vertical marks.
If there are deep scratches, bore all four cylinders. If necessary, replace the cylinder block.
5. Control of cylinder diameter.
Note: There are three standard cylinder diameter sizes, labeled "1", "2" and "3" respectively. The markings are stamped on the lower left side of the rear side of the cylinder block (L series) or on the mating surface (KZ series).
L-series engines
KZ series engines
Using a bore gauge, determine the cylinder diameter at positions A, B and C in the axial and transverse directions.
Nominal diameter:
Engines 2L, 2L-T:
- Marking "1" - 92.00-92.01 mm
- Marking "2" - 92.01 - 92.02 mm
- Marking "3" - 92.02 - 92.03 mm
Engine 3L and 1KZ-T:
- Marking "1" - 96.00-96.01 mm
- Marking "2" - 96.01 - 96.02 mm
- Marking "3" - 96.02 - 96.03 mm
Maximum allowable diameter:
- Engines 2L, 2L-T - 92.23 mm
- Engine 3L and 1KZ-T - 96.23 mm
Repair, increased by 0.50 mm:
- Engines 2L, 2L-T - 92.73 mm
- Engine 3L - 96.73 mm
If the diameter exceeds the maximum permissible value, then bore all four cylinders. If necessary, replace the cylinder block.
6. Removing the wear groove.
If the wear is less than 0.2mm, use a reamer to remove the groove at the top of the cylinder.
7. (Only 1 KZ-T) Checking the main bearing bolts.
Measure the thread diameter of the bolt at several points along its length.
Nominal diameter - 13.5-14.0 mm
Minimum diameter - 12.6 mm
If the thread diameter is less than the permissible value, replace the bolt.
8. Check for a flow section in the block jet, clean if necessary.
(The original can be viewed on the website: www.ToyotaMAN.ru)