Toyota RM787U, Руководство по обслуживанию и ремонту

Страница: 991 / 1976

P12393
EM0BC-04
A05218
12 Pointed Head Bolt
Front
8
7
6
5
4
3
2
1
8
7
6
5
4
3
2
1
P25742
Painted Mark
Front
90
°
90
°
EM-60
- ENGINE MECHANICAL CYLINDER HEAD
1003
Author: Date:
2001 SIENNA (RM787U)
INSTALLATION
1. PLACE CYLINDER HEAD ON CYLINDER BLOCK
(a) Place 2 new cylinder head gaskets in position on the cylin-
der block.
NOTICE:
Be careful of the installation direction.
(b)
Place the 2 cylinder heads in position on the cylinder head
gaskets.
2. INSTALL 12 POINTED HEAD CYLINDER HEAD BOLTS
HINT:
The cylinder head bolts are tightened in 2 progressive
steps (steps (c) and (e)).
If any bolt is broken or deformed, replace it.
(a) Apply a light coat of engine oil on the threads and under
the heads of the cylinder head bolts.
(b) Install the plate washer to the cylinder head bolt.
(c) Install and uniformly tighten the cylinder head bolts on
each cylinder head, in several passes, in the sequence
shown, then repeat for the other side, as shown.
Torque: 54 N·m (550 kgf·cm, 40 ft·lbf)
If any of the cylinder head bolts does not meet the torque speci-
fication, replace the cylinder head bolt.
(d) Mark the front of the cylinder head bolt head with paint.
(e) Retighten the cylinder head bolts by 90
°
in the numerical
order shown.
(f) Check that the painted mark is now at a 90
°
angle to the
front.