Disassembling the cylinder head of the cylinder

Disassembling the cylinder head of the cylinder
1. Remove the valve lifters and re-gulirovochnye washers. Caution: Place the pushers and adjusting washer in order to install them.
2. Remove the valves.
a) adapted with a suitable valve, squeeze the sobleniya pru ¬ Jin and remove the two biscuit.
Caution: Place the springs, valves, valve seats, dried in the manner of their installation. a) Remove the valve stem seals.
Checking, cleaning and repair parts cylinder head of the cylinder
1.Clean the surface of the piston heads and its surface of the cylinder, interfaced with the head unit cylindrical wood.
a) Turning the crankshaft by the pistons ¬ consequently in TDC. Scraper clean the surface of the piston of carbon deposits ¬ mappings.
b) remove the scraper remains gaskets cylinder head surface at ¬ STI connector block.
c) Compressed air to remove the carbon deposits and balances gaskets cylinder head surface with ¬ and Stay of bolt holes.
Warning: using compressed air, take care of your eyes.
2. Clean the cylinder head. a) Clean the cylinder head gasket from the remnants.
Caution: Be careful that no damage would be ¬ surface of the head ¬ ki unit interfaced with a gasket.
d) Clean the cylinder head (interfaced with the surface of the cylinder), using a soft brush and solvent ¬ Tel.
3. Check the cylinder head. a) Check the flatness of surfaces ¬.
Precision ruler and a flat probe, as shown in the figure, check the flatness of working surfaces of the cylinder head of the block ¬ wood, mating:
• The surface of the cylinder block of the ditch (the surface of the gas interface).
• The surfaces of the intake and exhaust manifolds.
Maximum permissible non-planar surface-borhood: gas interface:
4A-0E (AE101, AE111) 0.10 mm
others. 0.05 mm
Intake manifold mating: 4A-F, 5A-F, 4A-FE, 5A-FE, 7A-FE and
4A-0E (AE101, AE111) 0.10 mm
4A-BE (AE92, A № 11
and AT160). 0.05 mm
mating outlet
collector of 0.10 mm
If the value exceeds the acceptable flatness, replace the cylinder head.
4. Clean the valves.
a) remove the plaque scraper car-distich deposits from the valve.
b) a brush completely clean the valve.
5. Check the diameter of the rod cluster ¬ pans and inner diameters of the guide on the valves.
others:
a) Using calipers measure the internal diameters of the sending-ing valves (on 3 levels, as shown in the figure).
c) Subtract the value of the diameter of the valve stem from the values ??of internal diameter of valve guide and determine the gap between the valve stem and its direction of Governors.
The inner diameter of the valve stem guide: 4A-0E (AE101, AE111) .. 5.01 - 5.03 mm
others. 6.01 - 6.03 mm
b) Using the penetration of dye-tor, check for cracks in the combustion chambers, intake and vypu ¬ sknyh channels on the surface of ha ¬ zovogo joint.
If there are cracks, replace the first-cleverly block.
The diameter of the valve stem: 4A-GE (AE101, AE111):
4.970 - 4.985 mm
4.965 - 4.980 mm
5.970 - 5.985 mm
5.965 - 5.980 mm

The standard gap between the direction lyayuschey and valve stem:
Intake 0.025 - 0.060 mm
exhaust 0.030 - 0.065 mm
The maximum allowable gap between the guide and valve stem: vpusknogo.0, 08 mm
exhaust 0.10 mm
Using a punch and hammer, Vypressuyte valve guides.
If the gap is greater than the maximum value, then replace the valve and on the guide. 6. If necessary, replace the valve in ¬ pravlyayuschuyu. a) Slowly heat the cylinder head in a water bath to a temperature of 80-100 ° C. Note: If the guide sleeve is installed retaining ring, it is recommended to heating ¬ Bani break the old hub, use an old valve using ¬, wrapped duct tape and a hammer. For before-and-hold surfaces of bores under pushers use rags. Guide bush break for the snap ring groove and the ring will not interfere with you, pressing the guide.

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a) calipers measure the diameter of the bore under the guide to the cor ¬ puse cylinder head.
Nominal diameter (cold): 4A-BE (AE101,
AE111) 9.679 - 9.701 mm
11.000 -11.027 mm rest
d) Select the new size of the outer diameter of the valve guide.
• If the diameter of the holes on the body-pravpyayuschuyu in the cylinder head is less than 11.027 mm (9.701 mm to 4, A-CE (AE101. AE111)). use will extend ¬ schuyu standard outer diameter.
• If the diameter of the guide hole in the hull cylinder head exceeds a 1.027 mm (9.701 mm for the 4A-GE (AE101.
AE111)), bore hole to the size of a 1,050-1 1.077 mm (9.729 -9.751 mm for the 4A-EE (AE101, AE111)) and use the direction lyayuschuyu with an outer diameter, increased by 0.05 mm. • If the diameter of the guide holes in the cylinder head housing than 11.077 mm (9.751 mm for the 4A-EE (AE101, AE 111)), replace the cylinder head. Note: (only for the 4A-OE (AE101, AE111)) guides the cluster ¬ pans vary in length, is not re ¬ confuse them during installation.
e) Again, gradually heat the second cylinder, neatly in a water bath to a temperature of 00 ° C. 80-1
e) Using a hammer and punch zapressuyte guide as long as the retaining ring, the mouth ¬ lished in the groove will extend ¬ ing, do not touch the surface of the cylinder ¬ agile.
Note: If you do not use a lock ring, it is recommended to embed the guide until it will not lift it above the surface-shatsya head of the block of 12.7 - 13.1 mm (8.2 - 8.6 mm 4A-BE (AE101, AE111)).
g) Using a 6 mm scan, expand the inner hole guide to provide a normalized clearance on the guide and valve stem. 7. Check valves and pritrite.
a) Pritrite (proshlifuyte) valves to remove traces of carbon and sample ¬ Rapin.
b) Ensure that the ground-valve chamfer forms an angle of 44,5 ° with respect to ¬ respect to the plane perpendicular to the axis of the rod.
The thickness of the cylindrical part of the burner valve that ¬: Rated:
4A-F, 4A-FE (AE101, AT190), 5A-FE,
7A-FE and 4A-CE. 0.8 - 1.2 mm
4A-FE (AE92, AE95, AT171 and AT180)
Intake 1.05 - 1.45 mm
final 1.19 - 1.59 mm
Minimum permissible. 0.5 mm
If the thickness of a cylindrical hour-Tee the valve is less than minimally acceptable value for menite-valve
d) Check the overall length of the valve.
with
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length of string
1 ™

4A-F, 5A-F and 4A-FE (AE92, AE95, AT171 and AT180): Rated:
Intake 97.45 mm
exhaust 91.90 mm
The minimum allowable:
Intake 90.95 mm
exhaust 91.40 mm
4A-FE (AE101, AT190), 5A-FE and 7A-FE: Rated:
Intake 87.45
exhaust 87.84
The minimum allowable:
Intake 86.95
exhaust 87.35
4A-OE (AE92, A number 1 and AT160): Rated:
Intake 99.60 mm
exhaust 99.75 mm
minimum allowable:
Intake 99.10 mm
exhaust 99.25 mm
4A-BE (AE101, AE111): Rated:
Intake 98.51 mm
prom 108.45 mm
The minimum allowable:
Intake 97.87 mm
prom 107.75 mm
If the length is less than the valve admits ¬ timoy, replace the valve, e) Check the front surface of the valve stem ¬ to ¬ met before the presence of wear. If the end of the cluster is worn ¬ pan, grind or replace the valve. After polishing, check the length of the valve. 8. Check and clean the valve seat ¬ new.
a) carbide cutter with a cone angle of 45 ° proshlifuyte seat cluster ¬ Lords, removing the minimum layer IU ¬ tal for treatment of workers facets saddles.
b) Check the landing valve seat.
Apply a thin layer of white paint on a bevel valve. Hold the valve to the working bevel seat, but not rotation schayte valve. Then remove the cluster pan and inspect the seat and chamfer the valve.
• If the paint remains on the whole circumference (360 °) bevel valve, the valve concentric. In the opposite case, replace the valve.
• If the paint is shown around the entire circumference (360 °) valve seat rail (sleeve) of the valve and valve seat are concentric. Otherwise pereshlifuyte chamfer.
• Ensure that the contact patch is in the middle of the work ¬ whose bevel valve and a width of 1.0-1.4 mm ¬ well.
Otherwise, adjust the bevel as follows: If the contact area is located too high on the bevel valve seat is used for pereshlifovki ¬ Use cutter with a cone angle of 30 ° and 45 °.
If the contact area is located too low on the bevel valve seat pereshlifovki then use those mills with a cone angle of 60 ° and 45 °.
d) After lapping valves ¬ cleanse those valve and seat.
9. Check the valve springs, a) Using a metal carbon ¬ nick (90 °), check neperpendiku-polarity of the valve spring.
Maximum permissible non-perpendicularity:
4A-F, 5A-F. 2.5 mm
4A-FE, 5A-FE, 7A-FE and
4A-OE (AE101, AE111) 2.0 mm
4A-OE (AE92, A № 11 iAT160 ).... 1.8 m