brake, and block wheels before doing diagnostic or service procedures.

https://evalue.internationaldelivers.com/service_kb/DocTool/ArticleViewer.aspx?ControlID... 5/1/2017

IK1201238 ­ Medium Duty (I6) Low Pressure Turbo Center Section Replacement Proced... Page 4 of 14

Item 1: Interstage Cooler (ISC)

Return to top

https://evalue.internationaldelivers.com/service_kb/DocTool/ArticleViewer.aspx?ControlID... 5/1/2017

IK1201238 ­ Medium Duty (I6) Low Pressure Turbo Center Section Replacement Proced... Page 5 of 14

REPAIR-REMOVAL PROCEDURE
The Removal Steps from IK1200938 Must be completed before continuing.
If vehicle is equipped with an ISC perform steps 1 through 3. If vehicle is not equipped with an ISC continue to step 4.

Figure 1: Oil Supply Tube at Oil Cooler Housing
Item 1: Interstage Tube Seal (Replace as needed)
Item 2: Interstage Tube
Item 3: Bolt (s)
Item 4: Interstage Tube Support Bracket
Item 5: Nut (s)

1.

Remove 2 bolts (Figure 1, Item 3) and 2 nuts (Figure 1, Item 5) and interstage tube support bracket (Figure 1, Item 4).

https://evalue.internationaldelivers.com/service_kb/DocTool/ArticleViewer.aspx?ControlID... 5/1/2017

IK1201238 ­ Medium Duty (I6) Low Pressure Turbo Center Section Replacement Proced... Page 6 of 14

Figure 2: Interstage Tube Removal
Item 1: Spring Clamp
Item 2: Bolt
Item 3: Interstage Tube

2.

Remove bolt (Figure 2, Item 2) from interstage tube (Figure 2, Item 3).

3.

Loosen clamp (Figure 2, Item 1) and remove interstage tube from vehicle.

https://evalue.internationaldelivers.com/service_kb/DocTool/ArticleViewer.aspx?ControlID... 5/1/2017

IK1201238 ­ Medium Duty (I6) Low Pressure Turbo Center Section Replacement Proced... Page 7 of 14

Figure 3: Oil Supply Tube at Oil Cooler Housing
Item 1: LP Turbocharger Turbine V-Band Clamp
Item 2: LP Turbocharger Center Section
Item 3: LP Turbocharger Drain Tube
Item 4: LP Turbocharger Turbine V-Band Clamp Orientation

4.

Loosen LP Turbocharger V­Band Clamp (Figure 3, Item 1).

5.
Using a rubber mallet, tap LP turbocharger center section (Figure 3, Item 2) until loose and remove from turbine housing and
oil drain tube (Figure 3, Item 3).
6.

Using a clean emery cloth, clean turbine housing mating surfaces.

https://evalue.internationaldelivers.com/service_kb/DocTool/ArticleViewer.aspx?ControlID... 5/1/2017

IK1201238 ­ Medium Duty (I6) Low Pressure Turbo Center Section Replacement Proced... Page 8 of 14

Figure 4: Oil Supply Tube at Oil Cooler Housing
Item 1: LP Turbocharger Oil Drain Tube O-Ring (Yellow)
Item 2: LP Turbocharger Oil Drain Tube

NOTE
If center section is not available perform steps 7 and 8. If center section is available continue to installation section.

7.

Remove LP Turbocharger Oil Drain Tube O-Ring (Figure 4, Item 1) from Oil drain tube (Figure 4, Item 2) and discard.

https://evalue.internationaldelivers.com/service_kb/DocTool/ArticleViewer.aspx?ControlID... 5/1/2017

IK1201238 ­ Medium Duty (I6) Low Pressure Turbo Center Section Replacement Proced... Page 9 of 14

Figure 5: New Low-Pressure Turbocharger
Item 1: Complete LP Turbocharger
Item 2: LP Turbocharger V-Band Clamp Orientation
Item 3: LP Turbocharger V-Band Clamp

NOTE
Before removing the LP turbocharger center section note the position of the turbine clamp (Figure 3, Item 2) for installation on vehicle. If
the clamp is not in the same orientation it may contact or interfere with turbocharger oil supply tube installation.

8.
Loosen LP Turbocharger V-Band Clamp (Figure 5, Item 3) and remove LP Turbocharger Center Section (Figure 5, Item
1) from turbine housing.
NOTE
Once the old center section is removed place it in a box with new exhaust housing and send to the warranty center.
Return to top

https://evalue.internationaldelivers.com/service_kb/DocTool/ArticleViewer.aspx?ControlID... 5/1/2017

IK1201238 ­ Medium Duty (I6) Low Pressure Turbo Center Section Replacement Proc... Page 10 of 14

REPAIR-INSTALLATION PROCEDURE
1.

If HPCAC is internally contaminated with oil, refer to IK1201175 for the cleaning procedure.

Figure 6: LP Turbocharger Center Section Priming
Item 1: Oil supply port
Item 2: LP Turbocharger Center Section
Item 3: Oil drain port
Item 4: Turbine wheel nut

NOTE
Do Not Remove Compressor housing. Install LP Turbocharger Center Section with compressor housing it came with.

2.
Using 15W­40 engine oil, prime the new LP turbo center section (Figure 6, Item 2) oil supply port (Figure 6, Item 1) while
spinning the turbine wheel nut (Figure 6, Item 4) until oil begins exiting the oil drain port (Figure 6, Item 3).
3.
Install new o-ring (Yellow) (Figure 4, Item 1) onto the LP turbocharger oil drain tube (Figure 4, Item 2) and lubricate with
P­80.

https://evalue.internationaldelivers.com/service_kb/DocTool/ArticleViewer.aspx?ControlID... 5/1/2017

IK1201238 ­ Medium Duty (I6) Low Pressure Turbo Center Section Replacement Proc... Page 11 of 14

Figure 7: LP Turbocharger Center Section Installation
Item 1: Turbine V-Band Clamp
Item 2: LP Turbocharger Oil Drain Tube
Item 3: Turbine V-Band Clamp Orientation

Note: the turbocharger oil supply tube is a one-time use
part, if removing/disconnecting oil supply tube for any
repair replace with new oil supply tube.
4.
Install the new LP center section onto the LP oil drain tube while installing into the turbine housing and secure with v-band
clamp from new LP turbo assembly.
5.

Using torque wrench, torque turbine V-band clamp (Figure 7, Item 1) to 13 lb-ft (17 N•m).

https://evalue.internationaldelivers.com/service_kb/DocTool/ArticleViewer.aspx?ControlID... 5/1/2017

IK1201238 ­ Medium Duty (I6) Low Pressure Turbo Center Section Replacement Proc... Page 12 of 14

Figure 8: Interstage Tube Removal
Item 1: Spring Clamp
Item 2: Bolt
Item 3: Interstage Tube

6.

Install interstage tube (Figure 8, Item 1) into hose and secure with spring clamp (Figure 8, Item 1).

7.

Torque clamp to 70 in lbs.

8.

Install bolt (Figure 8, Item 2) and torque to 23 ft lbs.

https://evalue.internationaldelivers.com/service_kb/DocTool/ArticleViewer.aspx?ControlID... 5/1/2017

IK1201238 ­ Medium Duty (I6) Low Pressure Turbo Center Section Replacement Proc... Page 13 of 14

Figure 9: Oil Supply Tube at Oil Cooler Housing
Item 1: Interstage Tube Seal (Replace as needed)
Item 2: Interstage Tube
Item 3: Bolt (s)
Item 4: Interstage Tube Support Bracket
Item 5: Nut (s)

9.

Install interstage tube support bracket (Figure 9, Item 4) and secure with 2 bolts (Figure 9, Item 3) and 2 nuts (Figure 9, Item 5).

10.

Torque bolts to 23 ft lbs and nuts to 45 ft lbs.

Once LP turbocharger Center Section has been installed proceed to installation
section of IK1200938, Step 1.
Return to top

https://evalue.internationaldelivers.com/service_kb/DocTool/ArticleViewer.aspx?ControlID... 5/1/2017

IK1201238 ­ Medium Duty (I6) Low Pressure Turbo Center Section Replacement Proc... Page 14 of 14

WARRANTY INFORMATION
Warranty Claim Coding:
Group: 12000 - Engine
Noun:

135 - Turbo, High Pressure or Single

Standard Repair Times:
SRTs are subject to change without notice, the time posted on the SRT homepage are correct and should be used.

High & Low-Pressure Turbo Center Section Replacement
Step

Repair

Model

Engine

IK1200938- H.P. Turbo Center Section
All
Replacement

CE/BE

Engines below 245hp

IK1200938- H.P. Turbo Center Section
All
Replacement

CE/BE

Engines with 245hp and up

IK1200938­ H.P. Turbo Center Section
All
Replacement

4300/4400

Engines below 245hp

IK1200938­ H.P. Turbo Center Section
All
Replacement

4300/4400

Engines with 245hp and up

IK1200938­ H.P. Turbo Center Section
All
Replacement

7300/7400/7500

Engines below 245hp

IK1200938­ H.P. Turbo Center Section
All
Replacement

7300/7400/7500

Engines with 245hp and
up

All

L.P. Turbo Center Section
Replacement

CE/BE

Engines below 245hp

All

L.P. Turbo Center Section
Replacement

CE/BE

Engines with 245hp and up

All

L.P. Turbo Center Section
Replacement

4300/4400

Engines below 245hp

All

L.P. Turbo Center Section
Replacement

4300/4400

Engines with 245hp and up

All

L.P. Turbo Center Section
Replacement

7300/7400/7500

Engines below 245hp

All

L.P. Turbo Center Section
Replacement

7300/7400/7500

Engines with 245hp and up

IK1201175

CAC Cleaning

All

All

SRT

High­Pressure
Turbocharger Center
Section (SRTs)

Low­Pressure
Turbocharger Center
Section (SRTs)

High-Pressure CAC
Cleaning (SRT)

Alternatively, the SRT code can be searched for, here.

OTHER RESOURCES
Master Service Information Site
Return to top
Hide Details

Feedback Information
Viewed:

7575

Helpful:

21

Not Helpful: 0
No Feedback Found

Copyright © 2017 Navistar, Inc.

https://evalue.internationaldelivers.com/service_kb/DocTool/ArticleViewer.aspx?ControlID... 5/1/2017