Toyota RM787U, Руководство по обслуживанию и ремонту

Страница: 1010 / 1976

A05207
Intake
7
8
5
6
3
4
1
2
9
10
A05197
7
8
5
6
3
4
1
2
9
10
Exhaust
A05284
Align
Intake
A05198
Intake
Main Gear
Sub-Gear
Service Bolt
EM-38
- ENGINE MECHANICAL CYLINDER HEAD
981
Author: Date:
2001 SIENNA (RM787U)
(3) Uniformly loosen and remove the 10 bearing cap
bolts, in several passes, in the sequence shown.
(4) Remove the 5 bearing caps and intake camshaft.
(b) Remove the exhaust camshaft.
(1)
Uniformly loosen and remove the 10 bearing cap
bolts, in several passes, in the sequence shown.
(2) Remove the 5 bearing caps, oil seal and exhaust
camshaft.
32. REMOVE CAMSHAFTS OF LH CYLINDER HEAD
NOTICE:
Since the thrust clearance of the camshaft is small, the
camshaft must be held level while it is being removed. If the
camshaft is not kept level, the portion of the cylinder head
receiving the shaft thrust may crack or be damaged, caus-
ing the camshaft to seize or break. To avoid this, the follow-
ing steps should be carried out.
(a) Remove the intake camshaft.
(1)
Align the timing marks (1 dot mark) of the camshaft
drive and driven gears by turning the camshaft with
a wrench.
(2) Secure the exhaust camshaft sub-gear to the main
gear with a service bolt.
Recommended service bolt:
Thread diameter 6 mm
Thread pitch 1.0 mm
Bolt length 16 - 20 mm
HINT:
When removing the camshaft, make sure that the torsional
spring force of the sub-gear has been eliminated by the above
operation.