Countries:

CANADA, MEXICO, UNITED STATES Document ID: IK1201501

Availability:

ISIS, NotSIR

Revision:

6

Major System:

ENGINE

Created:

1/6/2025

Current Language: English

Last Modified: 7/14/2025

Other Languages: NONE

Author:

Viewed:

Gintarus Andriusis

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Title : S13 Gear Housing Leak (By The Air Compressor)
Applies To : S13 Integrated Powertrain LT RH HX

Change Log
Please refer to the change log text box below for recent changes to this article:
07/14/2025 - Updated the service part table
05/21/2025 - Updated tools availability
05/14/2025 - Adding figures under warranty information to clarify on claiming this repair
05/06/2025 - Added parts catalog part number for the installation tool
04/15/2025 - Added warranty information, added clarification on tools
02/17/2025 - Added repair instruction steps.

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Description
The purpose of this document is to properly identify and repair a leak at the rear gear housing boss.
If the repair below is followed, ensure the campaign warranty process is followed. Filing instructions are listed in the Warranty section
below. Please note, the SRT allowance is for the entirety of this article

Symptoms
Diagnostic Trouble Codes & Dashboard Indicator Lights:
DTC/Light

Description

No Faults or Warning Lights
Customer Observations or Concerns:
Oil drip at the bottom of the rear gear housing near the compressor

Special Tools / Software
Tool Description

Tool
Number

Parts Catalog Part
Comments
#

Punch and Extension Handle
tool

12-573-01

1257301

Field repair installation
tool

International shipped tools at NO COST to the main Dealer locations on the week of 4/29/2025. Additional tools are available for purchase
through tools catalog. Tool availability for purchase through Parts Catalog - timing TBD

Service Parts Information
Kit Description

Part Number

Quantity Required

Ribbed Sleeve

7109504C1

1

Plug

7109506C1

1

Loctite 603

acquire locally

Notes

Diagnostic Steps

Step Action
DIAGNOSTIC:

1

Decision
Yes: Go to step 2

Per Figure 1 below, inspect for oil being present at
the bottom of the gear housing near the air
compressor
YES/NO QUESTION?

No: Reference IK1201505 for other leak locations

Is oil present at the bottom of the gear housing at
the area as shown in Figure 1?

Figure 1

Step Action

Decision

DIAGNOSTIC:
Use Figure 2, Figure 3, and Figure 4 below to
assist in inspecting for oil seeping past the
machined exposed boss surface

Yes: Go to Repair Steps

*NOTE* The International S13 engine has oil dye
added from the plant
2

*NOTE* If oil is noticed, clean it using a degreaser
and verify that the oil is coming through the
machined surface
*NOTE* Run a regen for half-hour, this would
give sufficient time to develop a leak after
cleaning to assist in confirming the leak location

No: Reference IK1201505 for other leak locations

YES/NO QUESTION?
Is there oil leaking at the machined boss area?

Figure 2 - Using a mirror to inspect between the lower compressor stud and the block

Figure 3 - Using a mirror to inspect between the lower compressor stud and block

*NOTE* - Below Figure 4, the air compressor is removed to assist in showing the area in question; the compressor does not need to be
removed to inspect for the boss leak
Figure 4

Repair Step(s)
The steps below are specific to repairing a leak at the exposed machined boss as described above
1. Bring the vehicle to a level surface, wheels chocked, and let the vehicle run until the engine reaches operating temperatures
2. Shut the engine off - let it sit for approximately 15 minutes
NOTE: For repair effectiveness, this repair needs to be completed with the engine still warm/hot after shutting the vehicle off - do not let it
sit for an extended period of time before performing the repair
3. Clean off the area around the cap screw (reference Figure 5) with engine degreaser to ensure no debris could be introduced into open oil
system
4. Remove the cap screw at the bottom of the gear housing (reference Figure 5) to expose the oil galley and allow the residual oil to drain
Figure 5

5. Assemble the tool by installing the extension handle onto the sleeve and installing punch (reference Figure 6)
Figure 6

6. Take the sleeve, spray it with a degreaser to ensure it is clean, and install the sleeve onto the tool with the tapered end facing away from
the tool (reference Figure 7)
Figure 7

7. Align the sleeve with the oil gallery and use a hammer to hit the extension handle until the 3rd step of the tool makes contact with the
housing (reference Figure 8)
Figure 8

8. Remove the tool from the galley
9. Take the new plug, spray it with degreaser, apply Loctite 603 onto the threads and inner face of the hex head, using a torque wrench, install
and tighten the plug into the oil galley to 25Nm (reference Figure 9)
Figure 9

10. Using a degreasing spray, ensure all the oil has been cleaned off in the area
11. Perform a regen for half an hour
12. Verify that the leak is no longer present at the exposed machined boss
***NOTE*** If the leak is still present, open a Technical Service case file for further direction

Warranty Information
Please follow steps outlined below
Repair

SRT

Hrs

DIAGNOSTICS AND SLEEVE INSTALL

A40-25A06-1

2.0

Warranty Figure 1

Warranty Figure 2

Warranty Figure 3

ADMINISTRATIVE PROCEDURE
The expense will be charged to Warranty. Claims should be submitted in the normal manner, referencing the Proactive Field Change Number.
It is important that the coding be completed properly to assist in processing the warranty claim. Complete instructions will be found in the
Warranty Policy Manual, Section 10.

As with all claim submissions, items acquired locally must be submitted in the Other Charges tab. The cost of any bulk items (such as a bag of
cable tie straps, roll of wire, barrel of oil, or tube of silicone) should be prorated for the cost of the individual pieces/amount used during each
repair.
To ensure this important improvement is made in a timely manner, all claims for this Proactive Field Change Number must be submitted within
12 months from the release of this document or within the normal warranty period for the vehicle, if after 12 months from the release date

Warranty Claim Coding:
Refer to the Warranty Coding Manual for Group and Noun Codes.
Standard Repair Time(s):
Refer to the SRT Manual for Repair Times

Other Resources
Master Service Information Site
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