Disassembly
1. Using a special tool, compress the valve spring and remove the crackers from the valve stem. Slowly release the spring compressor and remove the spring cap, valve spring, spring seat and valve from the cylinder head.
Note. Have numbered plastic bags or containers ready to store the valves.
2. Use pliers to remove the oil deflector cap.
Note. Do not reuse the oil deflector cap.
Examination
Valve spring
1. Inspect each valve spring for cracks or damage. Measure the free length of the spring.
2. Install the spring on a flat horizontal surface and measure the deviation of the top of the spring from the vertical plane.
Spring length without load:
- 1.3L engine: 42.03mm
- 1.1L engine: 40.50 mm
- 1.3L engine spring length under 24.7kg load: 34.5mm
- 1.1L engine spring length under 15.6kg load: 32.0mm
- Maximum permissible deviation of the spring from the vertical plane: no more than 1.5°
Valve guides
Check clearance between valve stem and valve guide. If the clearance exceeds the limit, replace the valve guide with an oversized bushing.
Clearance between stem and valve guide:
- intake valves:
- 1.3L engine: 0.030–0.060 mm
- 1.1L engine: 0.020–0.047 mm
- Exhaust valves:
- 1.3L engine: 0.035–0.065 mm
- 1.1L engine: 0.050–0.082 mm
Valve Guide Replacement
Using tool 09221-21200 (engine 1.3 l) or 09222–02100 (engine 1.1 l) replace the guide bushings as follows.
1. Using a guide bushing press tool and a press, press the valve bushing out of the cylinder head towards the cylinder block.
2. Expand the hole in the cylinder head to install the oversized bushing.
3. Using the valve guide installer, press the valve guide into the cylinder head. The device ensures that the bushing is pressed to a strictly defined depth. Measure the protrusion of the top of the valve guide from the cylinder head. Note that valve guide protrusion is different for intake and exhaust valves.
4. After pressing in the valve guides, insert the new valves and check the clearance.
5. Check and, if necessary, replace the valve seats each time the valve guides are replaced.
Valve seat
Check the valve seat for overheating and damage to the seat in contact with the valve disc.
Repair or replace the valve seat if necessary.
Before machining the Hyundai Getz valve seat, check the valve guide for wear. If the valve guide is worn, replace it and grind the valve seat with a cutter, keeping the bevel width and centering of the valve seat and valve guide tight. After grinding, lap the valve against the seat using lapping paste.
Valve seat replacement
1. Any valve seat insert worn to the limit must be replaced at room temperature by shearing the wall as shown in Figure A.
2. After removing the old valve seat, it is necessary to bore out the seat for the oversized valve seat. Dimensions for processing are shown in the table.
3. Heat the cylinder head to 250°C and press in a new oversize valve seat. The valve seat must be at room temperature when pressed in. After installing a new valve seat, it is necessary to machine its working chamfer and perform valve grinding.
Valve
1. Inspect each valve for wear, damage, and deformation in the area «IN» and, if necessary, repair or replace it.
If the butt «A» rod is corroded or worn, restore the chamfers as necessary. This recovery should be limited to minimal metal removal. Also check the thickness of the working edges.
Valve head height, mm:
- nominal height of intake valves:
- 1.3L engine: 1.1
- 1.1L engine: 0.8
- nominal height of exhaust valves:
- 1.3L engine: 1.4
- 1.1L engine: 1.2
- minimum allowable intake valve height:
- 1.3L engine: 0.8
- 1.1L engine: 0.5
- minimum allowable height of exhaust valves:
- 1.3L engine: 1.1
- 1.1L engine: 0.9
Assembly
Note.
- 1) Clean all parts before installation.
- 2) Apply a thin coat of engine oil to all sliding surfaces.
1. Establish basic plates of springs. Using the special tool, install the oil seals on the guide bushings.
The use of the fixture ensures that the caps are installed in the required position. Improper installation of the valve stem seal adversely affects its sealing lip due to eccentricity and causes engine oil to leak through the valve guides. When installing, be careful not to twist the oil seal.
Do not reuse old oil seals.
2. Lubricate the valve stem with engine oil and install the valve. When installing the valve, do not apply much force so as not to damage the oil seal. Check for smooth valve movement.
3. Install springs and spring retainers. The springs must be installed with the side covered with enamel towards the plate.
4. Compress the spring with the special tool. Install crackers and remove the special device for spring compression.
5. Install the cylinder head.