1.3L petrol engine, 1.6L petrol engine (4A-L, 4A-LC), diesel working volume of 1.8 l
Distinctive features of the removal and installation of the diesel camshaft with a working volume of 1.8 liters are given at the end of the section.
Removing
Remove cylinder head cover with gasket.
Install piston first cylinder at TDC.
Attention: Do not change the position of the crankshaft in the future.
Remove toothed belt.
Remove ignition distributor.
Remove the fuel pump from the cylinder head, if it exists.
1.6L Engines (4A-L, 4A-LC)
Remove the valve rocker bolts in order from 1 to 5.
Remove and set aside the camshaft complete with rocker arms and springs.
Holding the camshaft from turning with a wrench, for example, HAZET 279-15, unscrew the gear wheel mounting bolt. Remove the wheel, using a rubber mallet if necessary.
Caution: Be careful not to damage the cylinder head with a wrench.
Check camshaft end play. Its value should be 0.08-0.18 mm. The maximum allowable axial play is 0.25 mm. If the gap exceeds the allowable value, the camshaft, and possibly the cylinder head, should be replaced.
To give bolts of fastening of covers of bearings of a camshaft in the sequence specified in drawing. Loosen the bolts in several steps.
Attention: For models from 8/84, the bearing caps are not removable.
Remove the bearing caps and put them in that order (or mark), so that they are installed in their original places during assembly.
Remove camshaft.
Installation
Lubricate the camshaft bearings with oil.
Install the camshaft so that the locating pin for centering the camshaft pulley points upwards.
Install the camshaft bearing caps as marked. Fasten by hand with bolts.
Install a new camshaft oil seal after lubricating it with oil.
Attention: Do not distort the seal during installation.
Coat the camshaft wheel bearing cap with sealant and install. Specialized workshops use TOYOTA No. 102 sealant for this (ET Nr.08826-00080) or some other silicone-based sealant.
Tighten the bearing cap bolts with a torque wrench in sequence. Bolts are tightened in two steps.
- 1 reception - with a force of 10 Nm
- 2 reception - with a force of 14 Nm
Turn the camshaft so that the locating pin of the wheel is directed to the upper marking of the bearing cover.
Install the camshaft wheel so that the dowel pin is in the hole "2E". Tighten the bolt to 50 Nm while holding the camshaft from turning with a wrench.
Caution: Be careful not to damage the cylinder head with the wrench.
Clean the camshaft wheel from water and oil.
Put on the toothed belt and tighten it.
1.3L engines up to 7/84, 1.6L engines (4A-L, 4A-LC)
Loosen the locknuts for the valve adjustment screws.
Reinstall the camshaft complete with rocker arms and springs.
Tighten the rocker arm mounting bolts in three steps in the direction shown in fig. sequences with the following efforts:
- 1 pass - 10 Nm
- 2 reception - 20 Nm
- 3 reception - 25 Nm
Check valve clearances.
Install the cylinder head cover with gasket.
Withdrawal. Diesel working volume 1.8 l
The presence of noise in the operation of the gas distribution mechanism indicates that the radial clearance of the distribution wool is too large. The radial clearance must be measured before dismantling the camshaft in a specialized workshop. It should be 0.037-0.073 mm. Its maximum allowable value is 0.1 mm.
Attention: After removing the toothed belt, the camshaft must not be rotated. This can cause damage to valves and pistons if they collide.
Remove intake manifold.
Remove the camshaft sprocket while holding the camshaft from turning with tool SST 09278-54011 or other suitable tool.
Unscrew the 5 bolts securing the camshaft oil seal support and remove the support.
Loosen the camshaft bearing cap bolts in several steps in the direction from the outer covers to the inner ones.
Installation
Tighten the bearing cap bolts with a torque wrench from the inside to the outside. Tighten in three steps:
- 1 pass - 10 Nm
- 2 reception - 14 Nm
- 3 reception - 18 Nm
Install the camshaft oil seal on TOYOTA No. 102 sealant (ET Nr. 08826-00080) or some other silicone-based sealant and tighten with 5 bolts.
Secure the camshaft wheel with a bolt to 100 Nm while holding the camshaft from turning with tool SST 09278-54011.
Install intake manifold.