Ford Corsar Repair Manual page 114

CYLINDER HEAD -Inspection-
1 ' 1
S E M 7 9 5 A
S E M 7 8 8 A
W: Refer
to
S.D.S.
S E M 6 3 5 A
VALVE SEATS
Check valve seats for any evidence of pitting a t valve contact
surface, and reseat or replace if excessively worn.
When repairing valve seats, check valve and valve guide for
wear beforehand. If worn, replace them. Then correct valve
seat.
The cutting should be done with both hands for uniform
cutting.
REPLACING VALVE SEAT FOR SERVICE PARTS
1. Bore out old seat until it collapses.
The machine depth stop should be set so that boring cannot
continue beyond the bottom face of the seat recess in
cylinder head.
2. Ream the cylinder head recess.
Reaming bore for service valve seat (Oversize [0.5 mm (0.020
in)] ):
Intake:
43.500
-
43.516 mm (1.7126
-
1.7132 in) dia.
Exhaust:
37.500
-
37.516. mm (1.4764
-
1.4770 in) dia.
3. Heat cylinder head to
a
temperature of 150 t o 160°C (302
to 320" F ) .
4. Press fit seal until it seats on the bottom, and peen more than 4
points.
5. Cut or grind valve seat using suitable tool a t the specified
dimensions as shown in S.D.S.
6.
After cutting, lap valve seat with a lapping compound.
7. Check contact condition of valve seat.
CAMSHAFT VISUAL CHECK
Check camshaft for Scratches, seizure and wear.
CAMSHAFT END PLAY
1. Install camshaft and locate plate in cylinder head.
2. Measure camshaft end play.
Camshaft end play:
Standard
0.07
-
0.14 mm (0.0028
-
0.0055 in)
Limit 0.2 mm (0.008 in)