Pic. 2.95. 1.8L engine camshafts
The camshafts of the 1.8 liter engine are shown in fig. 2.95.
Withdrawal
Disconnect the hose and vent hose of the positive crankcase breather valve.
Pic. 2.96. Removing the coolant pump pulleys and crankshaft
Remove the coolant pump pulley and crankshaft pulley (pic. 2.96).
Remove the timing belt cover.
Loosen the timing belt tensioner pulley bolts, loosen the belt tension, and temporarily secure the tensioner pulley.
Remove the timing belt from the camshaft sprocket.
Loosen the center cover bolts and then remove the cover.
Remove the ignition coil assembly.
Pic. 2.97. cylinder head cover
Loosen the cylinder head cover bolts and then remove the cover (pic. 2.97).
Remove the camshaft sprocket.
Pic. 2.98. Removing the camshaft bearing caps
Remove the camshaft bearing caps and timing chain (pic. 2.98).
Remove camshafts.
Remove hydraulic lifters.
Examination
Check the camshaft journals for wear. If the shaft journals are significantly worn, replace the camshaft.
Pic. 2.99. Checking the protruding part of the camshaft cams
Check the protruding part of the camshaft lobes for damage. If the shaft cams are damaged or their wear exceeds the allowable value, replace the camshaft (pic. 2.99).
Camshaft lobe height
Rated value:
- intake: 44.82 mm;
- outlet: 44.72 mm.
Maximum allowable value:
- intake: 44.72 mm;
- outlet: 44.62 mm.
Check the surface of the back of the camshaft cams for damage or significant wear and replace the shaft if necessary.
Check up a condition of a bed of a camshaft on absence of damage. If the wear of the camshaft bed exceeds the allowable value, replace the cylinder head assembly or the camshaft bearing caps.
- Axial clearance of the camshaft: 0.1–0.2 mm
Checking the camshaft oil seal
Check the seal lip for wear. If the working edge is worn out, replace an epiploon.
Check up a condition of a surface of a camshaft contacting with a working edge of an epiploon. If the shaft surface is worn, replace the camshaft.