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06-51914-01
2) Inspection of Turbocharger
When problem occurs with the turbocharger, it could cause engine power decline, excessive discharge
of exhaust gas, outbreak of abnormal noise and excessive consumption of oil.
On-board Inspection 1.
Check the bolts and nuts foe looseness or missing
Check the intake and exhaust manifold for looseness or damage
Check the oil supply pipe and drain pipe for damages
Check the housing for crack and deterioration -
-
-
-
Inspection of turbine 2.
Remove the exhaust pipe at the opening of the turbine and check, with a lamp, the existence of
interference of housing and wheel, oil leakage and contamination (at blade edge) of foreign materials.
Interference: In case where the oil leak sign exists, even the small traces of interferences on the
turbine wheel mean, most of times, that abrasion has occurred on the journal bearing. Must
inspect after overhauling the turbocharger.
Oil Leakage: Followings are the reasons for oil leakage condition -
-
Problems in engine: In case where the oil is smeared on inner wall section of the exhaust gas
opening.
Problems in turbocharger: In case where the oil is smeared on only at the exhaust gas
outlet section. *
*
Idling for long period of time can cause oil leakage to the turbine side due to low pressure of exhaust
gas and the rotation speed of turbine wheel. Please note this is not a turbocharger problem.
Oil Drain Pipe Defect
In case where oil flow from the turbocharger sensor housing to the crank case is not smooth
would become the reason for leakage as oil builds up within the center housing. Also, oil thickens
(sludge) at high temperature and becomes the indirect reason of wheel hub section. In such case,
clogging and damage of the oil drain pipe and the pressure of blow-by gas within the crank case
must be inspected.
Damages due to Foreign Materials.
When the foreign materials get into the system, it could induce inner damage as rotating balance
of the turbocharger gets out of alignment. -
-
-
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06-111914-01
3. TROUBLESHOOTING
The followings are cautions to take in handling defects of turbocharger, which must be fully aware of.
1) Cautions
After stopping the engine, check whether the bolts on pipe connecting section are loose as well as
the connecting condition of vacuum port and modulator, which is connected to the actuator.
During idling of the engine, check for leakage in the connecting section of pipe (hoses and pipes,
duct connections, after the turbocharger) by applying soap water. The leakage condition in the
engine block and turbine housing opening can be determined by the occurrence of abnormal noise
of exhaust.
By running the engine at idle speed, abnormal vibration and noise can be checked. Immediately
stop the engine when abnormal vibration and noise is detected and make thorough inspection
whether the turbocharger shaft wheel has any damages as well as checking the condition of
connections between pipes.
In case where the noise of engine is louder than usual, there is possibility of dampness in the areas
related with air cleaner and engine or engine block and turbocharger. And it could affect the smooth
supply of engine oil and discharge.
Check for damp condition in exhaust gas when there is sign of thermal discoloration or discharge of
carbon in connecting area of the duct.
When the engine rotates or in case where there is change in noise level, check for clogging of air
cleaner or air cleaner duct or if there is any significant amount of dust in the compressor housing.
During the inspection of center housing, inspect inside of the housing by removing the oil drain pipe
to check for sludge generation and its attachment condition at shaft area or turbine side.
Inspect or replace the air cleaner when the compressor wheel is damaged by inflow of foreign
materials.
Inspect both side of the turbocharger wheel after removing inlet and outlet pipe of the turbocharger. 1.
2.
3.
4.
5.
6.
7.
8.
9.
Page 557 of 796
01-6
3. TIGHTENING TORQUE
Description Tightening Torque (Nm) Remark
Oil drain plug (oil pan) 14 Hexagon, 5 mm
Oil filler pipe (upper) 8 ~ 10 -
Oil filler pipe (lower) 8 ~ 10 -
Oil cooler pipe 30 ~ 38 -
Oil pan 8 T 30
Torque converter housing/oil pump 20 -
Transmission rear mounting bracket
(left/right)36 ~ 44 -
Transmission rear mounting bracket
(center)20 -
Torque converter mounting bolt 42 -
Converter housing/engine 75 ~ 90 -
Converter housing/transmission housing 20 T 45
Valve bod
y8T 30
Valve body side cover 4 T 30
Solenoid valve 8 -
12-point collar nut 200 12-point, 30 mm
B2 housing bolt 16 T 45
Selector lever unit mounting bolt 6 -
Page 574 of 796
02-6
3. TIGHTENING TORQUE
Part nameTightening torque
(Nm)Numbers
Adhesive
1. Seal bolt (rolling plunger and guide spring) 53.9~67.6 1 EA Loctite
2. Guide bolt 14.7~21.5 1 EA Loctite
3. Pocket ball bearing bolt 29.4~41.1 1 EA Loctite
4. Reverse shift fork retainer bolt 53.9~67.6 2 EA Loctite
5. Backup lamp switch 29.4~34.3 1 EA Loctite
6. Oil drain plug 58.8~78.4 1 EA Loctite
7. Interlock bolt 14.7~21.5 1 EA -
8. Neutral switch 29.4~34.3 1 EA Loctite
9. Oil filler plug 58.8~78.4 1 EA Loctite
10. Extension housing 42.1~53.9 12 EA -
11. Concentric slave cylinder bolt 9.8~15.6 3 EA -
12. Front bearing retainer bolt 19.6~24.5 8 EA Loctite