511. Detach tail exhaust pipe assembly
Remove 2 bolts and the tail exhaust pipe assembly.
2. Remove intermediate exhaust pipe assembly
Replace exhaust system
Detach 2 bolts and intermediate exhaust pipe assembly.
3. Detach front exhaust pipe assembly
Remove 2 bolts and front exhaust pipe assembly.
4. Install front exhaust pipe assembly
Using vernier calipers, measure the free length of the spring.
Free length: 42mm
Using the new gasket, install the front exhaust pipe to the exhaust manifold.
Notice:
zDo not use removed gasket any more.
5. Install front exhaust pipe assembly.
Torque: 43N. m
6. Install intermediate exhaust pipe assembly
Using the new gasket, install the intermediate exhaust pipe to the front exhaust pipe.
Torque: 44N. m
7. Install tail exhaust pipe assembly
Using the new gasket, install the tail exhaust pipe to the intermediate
exhaust pipe. See (Figure 117).
Torque: 43N. m
8. Check exhaust for leakage
Figure 117Tail Pipe side
Washer
843. Output Level
ECU output level is designed to send control signal to the actuators of the electronic control system based on
the orders of the microprocessor in the micro-controller. The microprocessor control the output level by
controlling the occurrence position of the pulse, its length and duty ratio.
(1) Injection output level
The microprocessor controls the pulse length of the injection output level by making sure whether to
trigger to circuit or not in the injection output level.
(2) Ignition input level
The ignition output level is designed to amplify the ignition signal from the microprocessor into the primary
current of the ignition coil.
(3) Electric fuel pump output level
ECU microcontroller control the pump relay through electric fuel pump output level, and then control the
on and off of the electric fuel pump based on the current operating conditions.
(4) Other output levels
Control the output levels of the idle control valve, carbon canister solenoid valve, malfunction indicator
lamp. MR479Q, MR479QA, MR481QA engine idle control are closed loop control system, their injection
and ignition control are also closed loop control system.
106Section 3 Front Wheel AlignmentAdjustment1. Inspect tire
2. Inspect toe-in
Toe-in
If the toe-in is not as specified, adjust the tie rod (but the left and
right tie rods must be adjusted symmetrically).
3. Adjust toe-in
(1) Loose the tie rod end lock nut.
(2) Turn the left and right tie rod in the same direction for same
revolutions.
Hint: Adjust the toe-in to the specified value.
Only adjust the one-side tie rod is not allowed.
(3) Make sure the left and right tie rods are of the same length.
(The difference should be less than 0.5mm).
(4) Tighten the lock nut of tie rod.
Torque: 45~50N.m
4. Inspect wheel limited turn angle
Turn the steering wheel fully and measure the turning angle.
Wheel angle:
If the wheel angle is less than the specified value, check whether the length of the right and left tie rod
ends.Tire Pressure 220KP a
Toe-in C-D: 0±3mmInside whe e l a ngle 37.6°
Outside whee l a ngle 33.3°FrontFrontTurn Left Inner
Outer
1155. Install the front stabilizer bar
Install stabilizer bar, 2 rubber bushings, the front stabilizer bar clamp and 4 bolts.
Torque: 50~60N.m
Notice:
(1) Align the inner rubber bushing with the mark on the stabilizer bar.
(2) The 4 bolts connecting the stabilizer bar clamp and front stabilizer bar support
frame welding assembly differ in length. The two short ones are close
6. Install stabilizer bar link rod assembly
(1) Attach the stabilizer bar link rod to the stabilizer bar with nuts.
Torque: 40~50 N.m
(2) Attach the stabilizer bar link rod to the front shock absorber bracket with nuts.
Torque: 40~50 N.mto engine.
3742. Repair Of Outer Plate
1 11 1
1Repair of crackle
The crackle on the metal outer plate can be repaired by CO2 gas Protecting welding. When welded, the
two sides of the metal plate should be aligned, and then spot-weld on the outside of the outer plate. If the
crackle length is less than 50mm, it should be welded from the crackle end, and along the run of the
crackle and the outside edge. If the crackle length is very long, it should be spot-welded in some intervals,
and then weld the crackle in several sections. So, it can prevent the crackle metal from being over-burnt
and warping because of an extremely high temperature.
If the crackle appears on the place that is greatly loaded and it is very convenient to weld, 2-step welding
can be adopted, that is, After spot-welding on the outside, then you can first weld on the inside of the
crackle. After that, a welding seam is then applied on the outside in the same run.
After the welding finishes, put a backing block under the crackle, and then use a hammer to gently knock
on the outside of the crackle to remove the remaining welding stress. Finally, trim the appearance of the
crackle to make it smooth and convenient to apply paint.
2 22 2
2Repair of partial damage of the outer plate
When the outer plate has partial rust or serious damage and even cannot be repaired, it can be mended by
cutting off the damage or pasting a new one on it.
How to cut off the damage:
a. Confirm the area that needs cutting;
b. Cut a paper example;
c. Cut the metal plate according to the paper example;
d. Paste the metal piece cut onto the surface of the area that needs cutting off;
e. Use a draw needle tip to make an outline along the sides of the metal piece. And cut off the
damaged or rusted area along the outline;
f. Use a wooden hammer or a backing block to smooth the cut, and use a file to file the burr, to assure
that the cut is parallel with both sides of the substitute piece and the clearance should be no more
than 1mm;
g. Substitute the damaged area with the piece. Use pliers to hold it and spot-weld the joint in an
interval of 50mm for fixation;
h. Weld in sections. First weld the central part and then the left and right in turn, to avoid deformation;
i. Use a hammer or block to knock on the seam to remove the remaining stress. And use a file or
hand grindstone to grind the seam to make it smooth to the plates around. Finally, paint the substitute
piece.
3 33 3
3Repair of uneven damage of the outer plate caused by crash
When the outer plate is crashed, a concave pit appears on it. The repair should be taken from the point C
(Figure 5-17). Put the block on the top of the protrusion area, use a hammer to knock it and correspondingly
change the position of the block. After the protrusion area is knocked down to the level, most of concave
in B area will spring back. It is already very much like the former outline of the plate. As to some little
remaining depressions, use a block with a same radian with the plate and use a hand to press the block
upwards. Knock the top point of the concave with a hammer (Figure 5-19).
376can make a reshaping repair according to lever principle by making use of different clearances. To repair
by prying without disassembling parts can maintain the original assembling quality and improve the working
efficiency.
4 44 4
4Repair of outer plate breakup welding
Outer plate being breakup welding is caused by bad welding between welding wire and metal plates. For
the general breakup welding of the welding seam, a new welding can be applied after removing the
welding wire accumulated at the joint. For the breakup welding of spot-welding, you can use a one-side
spot welder to spot-weld nearby the breakup welding points. The new points are 10-15mm away from
the original points. Before spot-welding, you should clean up the greasy dirt and rusty spot at the welding
points and also make sure that the plates are well aligned.
For the breakup welding that occurs at the flanging edges, an intermittent gas welding can be applied at
the edge of the plate to make the plate edge melted after the 2 plates are well aligned. The every seam
length of the intermittent weld is about 30mm, and the interval of welding seam can refer to the former
welding interval.
Another repair method for outer plate breakup welding is plug welding. It is better to apply CO2 gas
protecting welding. Drill a hole of diameter 6mm on the outer plate, and then press and well paste the
2 plates. Fill the hole with welding wire by CO2 gas protecting welding. When welding, the welding wire
moves in circular way directing to the inner plate to have the inner and outer plates merged together.
After welding, polish and trim the surface, and then paint.