Differences
This shows you the differences between two versions of the page.
| Both sides previous revision Previous revision Next revision | Previous revision | ||
| articles:m104_head_gasket_replacement [2024/03/13 06:18] – john5788 | articles:m104_head_gasket_replacement [2024/09/03 05:45] (current) – [Install Upper Intake Manifold] john5788 | ||
|---|---|---|---|
| Line 55: | Line 55: | ||
| - Remove exhaust manifold | - Remove exhaust manifold | ||
| - | ===== Remove Intake Manifold ===== | + | ===== Remove |
| - Disconnect fuel injectors wire plugs | - Disconnect fuel injectors wire plugs | ||
| - Disconnect resonance flap wire plug | - Disconnect resonance flap wire plug | ||
| Line 73: | Line 73: | ||
| - Remove cylinder head bolts, starting with bolt #14 on the outside working towards the center | - Remove cylinder head bolts, starting with bolt #14 on the outside working towards the center | ||
| - Lift cylinder head off engine block. Cylinder head weight approximately 80 lb. | - Lift cylinder head off engine block. Cylinder head weight approximately 80 lb. | ||
| + | |||
| + | |||
| + | ===== Installing Cylinder Head ===== | ||
| + | - Clean mating surfaces and check for flatness. | ||
| + | - 0.004" tolerance between front and rear of engine block / cylinder head mating surface | ||
| + | - Clean cylinder head bolt holes | ||
| + | - Set engine timing to 30 degrees BTDC. | ||
| + | - Pistons are in position such that valves will not interfere when adjusted later | ||
| + | - Install new head gasket | ||
| + | - Install cylinder head | ||
| + | - Torque cylinder head bolts | ||
| + | - Lightly coat threads with engine oil for wet torque | ||
| + | - Follow tightening stages, order, and torque specs | ||
| + | - 1st stage: 55 Nm | ||
| + | - 2nd stage: 90 degrees | ||
| + | - 3rd stage: 90 degrees | ||
| + | |||
| + | ===== Setup Basic Timing ===== | ||
| + | - Set camshafts to TDC using a tool 4mm in diameter such as a punch or a 5/32" drill bit | ||
| + | - Turn intake camshaft advance magnet to the fully retarded position by turning it clockwise until stop | ||
| + | - Install timing chain with exhaust cam timing gear | ||
| + | - Tighten screws to 22 Nm | ||
| + | |||
| + | ===== Install Upper Timing Cover ===== | ||
| + | - Clean mating surfaces for upper timing cover and install U-shaped seal. | ||
| + | - Apply oil resistant sealant to metal seal surfaces of upper timing cover | ||
| + | - Replace o-ring for water passage in upper timing cover | ||
| + | - Install new timing chain guide rail | ||
| + | - Install upper timing cover, secure bottom screws first. | ||
| + | - Tighten screws to 21 Nm | ||
| + | - Lubricate chain guide rail pin with oil and reinsert through the timing cover | ||
| + | - Reinstall the cover for the pin by hand until fully seated. Tap the guide rail pin further if necessary. Avoid using the threads to push the pin in because they are made of aluminum and will strip. | ||
| + | |||
| + | ===== Install Upper Intake Manifold ===== | ||
| + | - Place intake manifold against cylinder head mating surface and install with only 4 screws | ||
| + | - Use the 4 screws that are not shared by the fuel rail. | ||
| + | - Reconnect knock sensor wiring while intake is loose | ||
| + | - Tighten hose clamps connecting upper and lower intake manifolds | ||
| + | - Reconnect resonance flap electrical connector | ||
| + | - Reinstall fuel rail and the remaining screws to secure both fuel and intake manifold to cylinder head | ||
| + | - Reconnect fuel supply and return line | ||
| + | - | ||