British Leyland Triumph Toledo, Repair Manual

Page: 62 / 339

ENGINE
DECARBONIZE, REFACE ALL VALVES AND
SEATS, GrftlND-IN VALVES, TUNE ENGINE
12.29.21
Dismantling
1. Remove the cylinder hSad. 12.29.10.
2. Remove the inlet and exhaust valves. 12.29.62.
3. Remove carbon deposits from c§Vnbustion cham­
bers and ports.
4. Clean the face of the cylinder head, removing all
traces of carbon and high spots.
5. Clean out the water-ways. ,
6* R eface all seats, rem oving the m inim um o f m aterial.
7. ^ Clean carbon from all valves and re-face.
8. Lap-in the valves, using coarse followed by fine
grinding paste until a gas-tight joint is obtained.
Do not mix the valves.
9. Turn the crankshaft until Nos. 1 and 4 pistons are
at T.D.C.
10. Fill Nos. 2 and 3 cylinders with clean non-fluffy rag
to prevent carbon falling into the bores, and cover
the cam follower apertures.
11. Carefully, without scoring the piston crown, re­
move carbon deposits leaving a band of carbon
round the periphery of the piston crown. Avoid
carbon particles falling into the cylinder block
water-ways.
•
12. Repeat instructions 9 to 1 I on Nos. 2 and 3 cylinders.
1,3. Clean the cylinder block face, removing all traces
x— of carbon and high spots..
Reassembling
14. Reverse instruction 1 to 2.
15. Tune the engine, J2.49.02.
CYLINDER HEAD—RENEW CASTING
—Dismantle and reassemble 12.29.22
★ ★
4
Dismantling
1. Remove the cylinder head. 12.29.10.
2. Remove the inlet and exhaust valves. 12.29.62.
3. Remove the spark plugs.
Reassembling to new casting
4.
5.
6
.
7.
Fit the rocker shaft pedestal studs.
Fit the rocker cover studs.
Fit the inlet and exhaust manifold studs.
Lap-in all valves, removing all traces of compound.
Reverse instructions 1 to 2.
Tune the engine. 12.49.02.
12.29.21 *