Engine Mechanical - Overhaul - 1.8L (Bp): Adjustments Mazda MX-5 NB рестайлинг

VALVE CLEARANCE ADJUSTMENT

Perform this same procedure for all camshafts requiring valve clearance adjustment.

Scheme 10

Scheme 11

Scheme 12

Scheme 13

Scheme 14

Scheme 15

Scheme 16

1. Turn the crankshaft clockwise so that the cams on the camshafts requiring valve clearance adjustment are positioned straight up.
2. Remove the camshaft cap bolts as necessary. Remove only one pair of cap bolts at a time. Reinstall the cap bolts before removing the next pair. A: For EX side No. 1, 2, 3 cylinder adjustment shim removal. B: For IN side No. 1, 2, 3 cylinder adjustment shim removal. C: For EX side No. 2, 3, 4 cylinder adjustment shim removal. C: For IN side No. 2, 3, 4 cylinder adjustment shim removal. NOTE: For EX side No.2, 3 cylinder adjustment shim removal, remove bolts either A or C. For IN side No.2, 3 cylinder adjustment shim removal, remove bolts either B or D.
3. Install the SSTs on the camshaft using the camshaft cap bolt holes. Tightening Torque 11.3-14.2 N.m {115-145 kgf.cm, 100-125 in.lbf}
4. Align the marks on the SSTs (shaft and shaft clamp).
5. Tighten bolts A to secure the SST (shaft).
6. Face the SST (body) outside of the cylinder head, and mount it on the SST (shaft) at the point of the adjustment shim to be replaced.
7. Face the notch of the tappet so that a fine screwdriver can be installed.
8. Set the SST on the tappet by its notch.
9. Tighten bolt B to secure the SST (body).
10. Tighten bolt C, and press down the tappet.
11. Using a fine screwdriver, pry up the adjustment shim through the notch on the tappet. Remove the shim by using a magnet.
12. Select proper adjustment shim. New Adjustment Shim = Removed Shim Thickness + Measured Valve Clearance - Standard Valve Clearance (IN: 0.21 mm {0.0111 in}, EX: 0.31 mm {0.0122 in})
13. Push the selected shim into the tappet.
14. Loosen bolt C to allow the tappet to move up.
15. Loosen bolt B and remove the SST (body).
16. Remove the SSTs and tighten the camshaft cap bolts. Tightening Torque 11.3-14.2 N.m {115-145 kgf.cm, 100-125 in.lbf}
17. Inspect for the valve clearance. (Refer to «VALVE CLEARANCE ADJUSTMENT»(ref-182481-S25829294082005080800000) , «VALVE CLEARANCE INSPECTION»(ref-182481-S19788162222005080800000) .)