Camshaft, Removing And Installing: Installing
- Tightening Specification. Refer to Figure.
Replace Seals And Sealing Rings.
Replace Any Bolts That Were Tightened With An Additional Turn.
Risk Of Contaminating Lubricating System And Bearing.
- Cover open parts of engine.
Danger Of Eye Injury.
- Wear protective eyewear.
-- Using a rotating plastic brush, remove any remaining sealant from the cylinder head and guide frame.
-- Clean the sealing surfaces. They must be free of oil and grease.
-- Oil running surfaces of both camshafts.
-- Place the camshafts in the cylinder head, being careful of their position so the guide frame can be laid on top without tension.
LEFT CYLINDER HEAD
- Intake camshaft
- Exhaust camshaft
- Groove on end of shaft must lie as shown in illustration.
RIGHT CYLINDER HEAD
- Exhaust camshaft
- Intake camshaft
- Groove on end of shaft must lie as shown in illustration.
CONTINUED FOR BOTH SIDES
-- Check the location of the compressor ring ends.
- The compression ring ends -1 and 2- must face upward or downward, and must never face sideways.
Note The Expiration Date Of The Sealing Compound.
-- Cut the tube nozzle at the front marking (nozzle diameter: about 2 mm).
-- Lay the seal -2- in the groove on the guide frame.
Risk Of Contaminating Camshaft Bearing With Excess Sealant.
- Do not apply sealant beads thicker than indicated.
-- Apply sealant beads -1, 3 and 4- to the clean guide frame sealing surfaces as shown in the illustration.
- Thickness of sealant beads: 2.5 mm.
The Guide Frame Must Be Installed Within 5 Minutes After Applying The Sealant.
-- Place the guide frame on the cylinder head.
Ensure Camshafts Can Be Inserted In Guide Frame Axial Bearing Without Force.
-- Install the :T40116 into the guide frame and cylinder head.
-- Tighten the guide frame bolts. Refer to Figure.
The Sealant Must Harden For Approximately 30 Minutes After Installing The Guide Frame.
-- Drive in the sealing plugs -arrows- until they are flush.
-- Remove the :T40116 with the :T10133/3 .
-- Rotate intake camshaft to "TDC" and tighten camshaft adjuster bolt -2- on camshaft with a socket SW 24 -1- inserted between.
When Tightening The Bolt, Use Pliers To Counterhold The Socket.
-- Position a lever or ratchet with the :T10035 on the bolt and turn the camshaft until the threaded hole for the :T40070 faces up.
-- Then install the :T40070 loosely on the intake camshaft.
- The :T40070 is correctly positioned when the holes for the cylinder head bolts remain free.
-- Change the camshaft adjuster bolt -2- and the 24 mm socket -1- to the exhaust camshaft.
-- Turn the exhaust camshaft until the threaded hole for the :T40070 faces up.
-- At the same time, position a 24 mm open end wrench on the :T40070 and turn the :T40070 against the exhaust camshaft in direction of -arrow-.
-- Install the :T40070 on the exhaust camshaft by hand to prevent damage to the threads (a second technician is needed).
-- Tighten the :T40070 to 25 Nm -arrows-.
-- Turn the crankshaft to "TDC" in direction of engine rotation -arrow-.
-- Install the :3242 in the hole and tighten to 20 Nm. Rotate the crankshaft -1- back and forth slightly to center the pin completely, if necessary.
Install in reverse order of removal.Note The Following:
-- Install the high pressure pump. Refer to HIGH PRESSURE PUMP, REMOVING AND INSTALLING .
-- Position the camshaft timing chain on the camshafts. Refer to Installing .
Risk Of Damaging Valves And Piston Heads After Working On Valve Train.
- The motor must not be started for about 30 minutes after installing camshafts because the hydraulic equalization elements must seat themselves.
- To ensure valves do not strike pistons when starting, carefully rotate engine at least two full revolutions.