Note:
- Thoroughly clean all parts to be assembled.
- Before assembly, lubricate with fresh engine oil all the parts that form the nodes of rotation or sliding.
- Replace all gaskets, o-rings and seals with new ones.
1. Install the main bearing shells.
Note (3S-FE, 4S-FE). The main bearing shells vary in width: 19.2 mm and 22.9 mm. The 22.9mm wide bearings fit the Nq3 main journal, and the 19.2mm wide bushings fit the rest of the main journals.
The upper shells of the main bearings have an oil channel and oil holes.
3S-FE, 4S-FE
A) Align the tabs of the upper bearing shells with the grooves (grooves) bed of the cylinder block and insert the liners.
b) Align the tabs of the lower bearing shells with the grooves (grooves) in the main bearing caps and install them.
Note: Each main bearing cap is numbered.
2. Install the upper thrust washers in the #3 main bearing block bed with the oil grooves facing out.
3. Lay a cranked shaft in the block of cylinders.
4. Establish covers of radical bearings and persistent half rings.
A) Install the two thrust washers on the #3 bearing cap with the oil grooves facing outward.
b) Install five main bearing caps.
Note: each bearing cap has a number and a label "before".
V) Apply a light coat of engine oil to the threads and under the heads of the main bearing cap bolts.
G) Install and evenly tighten the main bearing cap bolts in several passes in the sequence shown.
Torque:
- 3S-FE, 4S-FE - 58 Nm
- 3C-T - 103 Nm
d) After screwing in the bolt and using a wrench, check that the crankshaft rotates evenly and without jamming.
e) Using a dial gauge, measure the crankshaft axial clearance while moving the crankshaft with a screwdriver (see above).
If the axial clearance is greater than the maximum, replace the thrust half rings.
5. Install the piston and connecting rod assembly.
A) Put pieces of hose on the threaded parts of the connecting rod bolts to prevent damage to the crankshaft journals.
b) Using a ring compressor, install the piston kits into the cylinders according to their numbers, orienting the marks "before" on the pistons towards the front of the engine as shown.
6. Establish the bottom covers of rods.
A. Install the lower connecting rod caps to the connecting rods.
A) Check the numbering of the connecting rod bearing caps and connecting rods,
b) Install the connecting rod caps so that the marks "before" were facing the front of the engine.
B. Install nuts on connecting rod bolts.
Note:
- The nuts are tightened in two steps.
- If any of the connecting rod bolts is broken or deformed, replace it.
A) Apply a layer of engine oil to the threads of the bolts, under the nuts of the connecting rod caps.
b) Initially tighten the connecting rod cap nuts evenly over several passes.
Torque:
- ZS-T - 66 Nm
- 4S-FE - 54 Nm
- 3S-FE (1st stage) - 25 Nm
- 3S-FE (2nd stage) — tighten by 90°
V) Paint the bolts and nuts as shown in the illustrations.
G) Tighten the nuts by 90°as shown in the illustrations.
d) Make sure the marks on the nuts are now 90°from the mark on the connecting rod bolts.
If any nut is not tightened to the specified torque, replace the bolt and nut.
(All engines)
e) Check that the crankshaft turns evenly and without jamming.
and) Using a dial indicator, measure the end play while moving the connecting rod back and forth, (see above.)
If the end play is greater than the maximum, replace the connecting rod assembly. If necessary, replace the crankshaft.
7. Install the new gasket and rear oil seal retainer by tightening the six bolts.
- Tightening torque - 13 Nm