Installing Camshaft Adjuster
Conditions:
- Crankshaft at >>TDC<<
- The high pressure pump drive chain sprocket is secured with the :T10363
- The camshafts are secured with the :T10068A .
First install camshaft adjuster for intake camshaft as follows:
The camshaft adjusters are locked in their >>rest position<<. Therefore sensor wheel cannot be rotated when adjusting the valve timing. If locking mechanism in its >>rest state<< is not engaged (locked) turn adjuster in both directions by hand until it locks. If that is not possible, replaced camshaft adjuster.
The camshaft adjusters can be attached to the camshaft mount in only one position -arrows-. This is due to the alignment pin.
-- Place the intake camshaft adjuster with the timing chain in place on the camshaft timing chain. Note The Following:
- The timing chain for the high pressure pump drive train sprocket must not >>hang through<<.
- It must be easy to mount the camshaft adjuster with the timing chain >>taut<< and can then be tighten by hand.
- Arrow -1- on camshaft adjuster >>24E<< must align with the right notch -2- of control housing. Markings on control housing. Refer to Figure.
-- Tighten the camshaft adjuster retaining bolt by hand.
-- Count exactly 16 rollers on camshaft timing chain to the right from tooth with arrow -1- aligning with notch -2-. Mark this roller with a color marker.
-- Install the exhaust camshaft adjuster >>32A<< into the camshaft timing chain. The previously counted 16 rollers must lie between the arrow markings >>24E<< and >>32A<<.
-- Place camshaft adjuster >>32A<< with camshaft timing chain installed on exhaust camshaft. Note The Following:
- The arrow -1- on the camshaft adjuster >>32A<< must align with the notch -2- on the right side of the control housing. Markings on control housing. Refer to Figure.
It must be possible to insert the exhaust camshaft adjuster easily on the exhaust camshaft. If necessary, move the camshaft slightly back and forth.
-- Remove the :T10363 from the bearing shaft.
-- Remove the :T10068A .
-- Install the chain tensioner for camshaft timing chain -arrow-. Tightening specification 50 Nm.
-- Rotate the crankshaft 2 revolutions in direction of engine rotation and check the valve timing.
If the markings match:
-- Secure the respective camshaft to be tightened using a 27 mm open-end wrench -arrow-.
The :T10068A must not be inserted.
Be aware that all chain sprocket securing screws/bolts must be replaced.
-- Tighten the new mounting bolts for the intake and exhaust camshaft adjuster to 60 Nm + 90° (1 /4 turn.
-- Clean the sealing surfaces on the rear cover. Coat the sealing surface with Sealant:D 176 501 A1
-- Mount the cover and tighten the bolts -arrows- to 8 Nm diagonally.
Assembly is performed in reverse order.