Maintenance Manual for J2 Sedan
Mechanical Part of Engine
67
b.
Apply a film of engine oil onto washer, which is at the threaded portion of bolt.
c.
Tighten cylinder head bolts in sequence, until each bolt torque is 24.5 ± 2 N • m.
d.
Fully unscrew bolts.
e. Tighten the bolts until the torque of each bolt is 24.5 ± 2N • m.
f.
Paint marks on the bolt head and the cylinder
head (see Fig.1.1.040).
g.
Screw each bolt for more 90° with to the
tightening sequence.
h.
Re-tighten each bolt by 90°.
Attention:
■
When the two tightening angles are below
180 °, tightening performance can not be
assured; be sure to reach 180 ° when
tightening.
■
When the two tightening angles are above 184 °, completely loosen the bolt and re-tighten per
the initial sequence.
i.
If the old cylinder head bolts are replaced during the maintenance, operation should be performed
in sequence from “a” to “h”.
j.
If the old cylinder head bolts are not replaced during the maintenance, operation should be
performed in sequence “a, b, e, f, g and h”.
③
Then, perform the installation steps which are just contrary to dismantlement.
4) Check after Dismantlement
The steps for checking oil leakage, lubricant leakage and tail gas leakage are as following:
■
Before starting the engine, check the engine oil/coolant level. If the level is lower, replenish the
engine oil/coolant till the specified level is reached.
■
Perform the following steps to check whether the oil leakage occurs:
Turn the ignition switch to the “ON” position (when engine is stopped). With the oil pressure
acting on the oil pipe, check whether there is fuel leakage at the joint.
Start the engine. With the engine accelerating, recheck whether there is fuel leakage at the joint.
■
Run the engine to check whether the abnormal noise or vibration appears.
■
With engine warmed up completely, verify that there is no fuel leakage, tail gas leakage or any
oil/fluid (including engine oil and coolant) leakage.
■
After engine cooled down, recheck oil/fluid (including engine oil and engine coolant) level.
Replenish the oil/fluid to the specified level as required.
Fig.1.1.043
Painting Mark
