Dodge Caliber. Manual — part 1050
Clearance too Large
1. Remove camshafts (Refer to 9 - ENGINE/CYLINDER HEAD/CAMSHAFT(S) - REMOVAL).
2. Measured – spec = delta
3. Increase bucket thickness by delta.
4. Install camshafts (Refer to 9 - ENGINE/CYLINDER HEAD/CAMSHAFT(S) - INSTALLATION).
5. Verify that valve lash is correct.
REMOVAL
NOTE: This procedure is for in-vehicle service with camshafts installed.
NOTE: Camshaft buckets must be replaced if cylinder head or camshafts are replaced.
1. Remove cylinder head cover (Refer to 9 - ENGINE/CYLINDER HEAD/CYLINDER HEAD COVER(S) -
REMOVAL).
2. Remove camshafts (Refer to 9 - ENGINE/CYLINDER HEAD/CAMSHAFT(S) - REMOVAL).
3. Remove camshaft buckets.
4. Repeat removal procedure for each camshaft bucket.
5. If reusing, mark each camshaft bucket for reassembly in original position.
INSTALLATION
NOTE: If reinstalling original buckets they must go back in their original location or engine damage could
result.
1. Apply a light coat of clean engine oil to camshafts buckets prior to assembly.
2. Install camshaft bucket into cylinder head.
3. Repeat installation procedure for each camshaft bucket.
NOTE: If installing new buckets, the valve lash procedure must be performed.
PM
ENGINE 1.8L WORLD
9 - 1487
4. Install camshafts (Refer to 9 - ENGINE/CYLINDER HEAD/CAMSHAFT(S) - INSTALLATION).
5. Install cylinder head cover (Refer to 9 - ENGINE/CYLINDER HEAD/CYLINDER HEAD COVER(S) - INSTALLA-
TION).
9 - 1488
ENGINE 1.8L WORLD
PM
VALVES & SEATS-INTAKE/EXHAUST
DESCRIPTION
The valves are made of heat resistant steel. They have nitrided stems to prevent scuffing. Viton rubber valve stem
seals are integral with the spring seats. The valves have a single bead lock keepers to retain the springs.
OPERATION
The four valves per cylinder (two intake and two exhaust) are opened by using direct acting buckets which are
actuated by the camshaft.
CLEANING
1. Clean all valves thoroughly and discard burned, warped and cracked valves.
PM
ENGINE 1.8L WORLD
9 - 1489
SPRINGS & SEALS-VALVE
REMOVAL
CYLINDER HEAD ON
1. Remove cylinder head cover (Refer to 9 - ENGINE/
CYLINDER HEAD/CYLINDER HEAD COVER(S) -
REMOVAL).
2. Remove camshafts (Refer to 9 - ENGINE/CYLIN-
DER HEAD/CAMSHAFT(S) - REMOVAL).
3. Rotate crankshaft until piston is at TDC on com-
pression.
4. With air hose attached to adapter tool installed in
spark plug hole, apply 90-120 psi air pressure.
5. Using metric valve keeper remover (1), and remove
valve spring keepers and retainer.
6. Remove valve spring(s).
7. Remove valve stem seal(s) by a using valve stem
seal tool.
CYLINDER HEAD OFF
1. With cylinder head removed from cylinder block,
place a ball of rags in the combustion chamber.
2. Using Snap On metric valve keeper remover (1) or
equivalent, remove valve keepers with a downward
push.
3. Remove retainer and springs.
4. Before removing valves, remove any burrs from
valve stem lock grooves to prevent damage to
the valve guides. Identify valves, locks and retain-
ers to insure installation in original location.
5. Inspect the valves. (Refer to 9 - ENGINE/CYLIN-
DER HEAD/VALVE SPRINGS - INSPECTION).
INSPECTION
1. Whenever valves have been removed for inspection, reconditioning or replacement, valve springs should be
tested for correct tension. Discard the springs that do not meet specifications. The following specifications apply
to both intake and exhaust valves springs:
•
Valve Closed Nominal Tension—75 lbs. @ 38.0 mm (1.50 in.)
•
Valve Open Nominal Tension—134 lbs. @ 29.75 mm (1.17 in.)
2. Inspect each valve spring for squareness with a steel square and surface plate, test springs from both ends. If
the spring is more than 1.5 mm (1/16 inch) out of square, install a new spring.
9 - 1490
ENGINE 1.8L WORLD
PM
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст