Note: crankshaft oil seal replacement procedures (front and back) for MPI engines are similar to the corresponding procedures for GDI engines.
Camshaft oil seal replacement
Before you start removing parts, do the following:
- A) Remove the air filter and air filter bracket.
- b) Remove ignition coils.
- V) Drain the engine oil.
Removal of parts is carried out in the order of the numbers indicated in the figure "Camshaft oil seal replacement".
When removing parts, pay attention to the following operations:
1. Removing the camshaft pulley with timing belt assembly,
A) Turn the camshaft clockwise until the timing mark on the camshaft pulley aligns with the corresponding timing mark, and set the No. 1 cylinder piston to TDC on the compression stroke.
Camshaft oil seal replacement (4G15 engine). 1 - vent hose connection, 2 - positive crankcase ventilation hose, 3 - power steering hydraulic pressure hose retainer, 4 - cylinder head cover, 5 - cylinder head cover gasket, 6 - cylinder head cover seal (under the candles), 7 - front upper timing belt cover (when installing, adjust the clearances in the valve drive), 8 - camshaft pulley and timing belt assembly, 9 - camshaft oil seal, 10 - rocker arm assembly with rocker arms, 11 - camshaft position sensor connector, 12 - camshaft position sensor bracket, 13 - camshaft position sensor rotor shaft, 14 - camshaft.
Caution: Always turn the crankshaft in a clockwise direction only.
Engine 4G15.
Engine 4G93.
b) Using a band or wire, secure the timing belt to the camshaft pulley in the position as shown in the illustration.
V) Secure the camshaft pulley against rotation using a special fork holder and special bolts.
Attention: be careful not to rotate the camshaft after removing the pulley.
2. Removing the camshaft seal.
A) Cut part of the working edge of the camshaft oil seal.
b) Wrap the tip of a screwdriver with a cloth, insert it into the slot of the stuffing box and remove the stuffing box.
Attention: be careful not to damage the camshaft, cylinder head and cylinder head cover.
3. Removal of rocker axles complete with rocker arms.
Loosen the bolts securing the rocker shaft assembly with the rocker arms and remove the assembly assembly.
Attention: do not disassemble the rocker arm axle assembly with rocker arms unless absolutely necessary.
Installation is made in an order, the return to removal.
When installing parts, pay attention to the following operations:
1. Installing the camshaft position sensor bracket.
A) Remove any remaining sealant from the camshaft position sensor bracket.
Camshaft oil seal replacement (4G93 engine). 1 - engine management harness retainer, 2 - vent hose connection, 3 - positive crankcase breather hose, 4 - cylinder head cover, 5 - cylinder head cover gasket, 6 - cylinder head cover seal (under the candles), 7 - rocker arm assembly with rocker arms, 8 - camshaft position sensor connector, 9 - wire "masses", 10 - camshaft position sensor bracket, 11 - camshaft position sensor rotor, 12 - power steering hydraulic hose clamp, 13 - timing belt front upper cover, 14 - camshaft pulley and timing belt assembly, 15 - oil seal camshaft, 16 - relay and fuse box in the engine compartment, 17 - camshaft.
b) Apply the specified sealant to the mating surface of the sensor bracket and install it to the cylinder head.
Sealant - Mitsubishi Genuine Part MD970389, Three Bond 1207F or equivalent
Engine 4G15.
Engine 4G93.
V) Tighten the camshaft position sensor bracket bolts to specification.
Tightening torque - 14±1 N.m
2. Installation of the rocker arm assembly with the rocker arms.
A) Remove the rocker axle spring.
b) Install and lightly tighten the bolts of the rocker shaft of the intake valves so that no rocker on the side of the intake valves presses on the valves, in) Install the rocker axle spring on top of the axle so that it stands at a right angle; to the spark plug guide.
Note: You must install the rocker shaft springs before installing the rocker shaft with exhaust rockers.
G) Tighten bolts of fastening of an axis of yokes of inlet valves in gathering with yokes nominal moment.
Tightening torque - 31±3 N.m
d) Establish an axis of yokes of yokes of final valves in gathering with yokes and tighten bolts of fastening of an axis the nominal moment.
Tightening torque - 31±3 N.m
and) Make sure the chamfer of each rocker shaft is positioned as shown in the illustration.
4. Installing the camshaft seal.
A) Apply a small amount of engine oil to the lip of the oil seal around its entire circumference.
b) Using a special mandrel, press in the oil seal as shown in the figure.
5. Installing the camshaft pulley with timing belt assembly.
A) Install the camshaft pulley, aligning the alignment marks, and fix it from turning with a special fork holder and special bolts. Then tighten the mounting bolt to the specified torque.
Tightening torque - 88±10 N·m
b) Remove the band or wire securing the timing belt to the camshaft pulley.
After completing the installation of the parts, perform the following operations:
- A) Fill with engine oil.
- b) Install the ignition coils.
- V) Install the air filter bracket and air filter.