Mazda 3 Workshop Manual page 642

Mazda 3 Workshop Manual – Engine + Wiring Diagrams + Diagnostic Trouble Codes
16. Remove the camshaft caps.
17. Remove the intake and exhaust camshafts.
18. Remove the tappets.
19. Select a proper tappet according to the result of the valve clearance inspection and install it.
Tappet to be selected: thickness of the removed tappet + measured valve clearance - standard
valve clearance (0.3 mm {0.0118 in})
Standard valve clearance [Engine cold]
0.27-0.33 mm {0.0107-0.0129 in}
20. Align the timing marks on the crank pulley and the engine front cover, and then align the No.1 cylinder
to the TDC.
21. Install the intake and exhaust camshafts with the No.1 cylinder so that it is near TDC of the
compression stroke.
22. Install the camshaft caps to the position shown in the figure, and temporarily tighten the No.2 and
No.7 camshaft installation bolts.
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