Page 32 - E BOOK ENGINE MECHANICAL M2

5. SERVICE POINTS OF 4B1 ENGINE COMPONENT

<Front Camshaft Bearing Cap Removal>
First remove a mounting bolt of the front camshaft bear-
ing cap and then a mounting bolt of each camshaft
bearing cap in the order shown in Fig. 5-13.

Loosening the installation bolts for the cam-
shaft bearing cap individually causes the instal-
lation bolts to jump out because of the valve
Caution
spring force, which may result in the damaged
threads. Always loose them as a group in sev-
eral stages.
Fig. 5-13

<Front Camshaft Bearing Cap Installation>
1. When replacing a camshaft bearing, select a bearing
with the size corresponding to the identification mark in
the table below.
Front camshaft bearing cap Camshaft bearing
identification mark
Identification Inner diameter mm
mark
1 40.000 - 40.008 1
2 40.008 - 40.016 2
Fig. 5-14 3 40.016 - 40.024 3

2. The identification mark of the camshaft bearing is
painted as shown in the illustration.

Fig. 5-15

3. Tighten each front camshaft bearing cap mounting
bolt to the initial torque of 17 ± 3 Nm in the order of
number shown (1).

4. Tighten each front camshaft bearing cap mounting
bolt to the specified torque of 30 ± 2 Nm in the order of
number shown (2).

Fig. 5-16

5 - 5 Pub. No. PTAE1225