P7-146

Procedure 7-146
Date: September 20, 2018
Upper Marker Light Gasket Retrofit
Description:
This procedure outlines the steps to improve upper-marker light weather sealing by replacing the existing well-nuts
and installing new gaskets. This is applicable to all MCI coaches using the 07-07-6107 and 07-07-6108 marker
lights.
Read this entire procedure before beginning work.
Use Safe Shop Practices at All Times.
To avoid personal injury:
a. Proper Personal Protective Equipment (PPE) must be worn. Safety glasses and
protective gloves are required for working with DEF Fluid.
b. Turn the main battery disconnect switch to the OFF position.
c. Ensure that both the front and the rear wheels are chocked.
d. Positioning the ENGINE RUN and ENGINE START switches on the engine
compartment remote control box to the OFF position.
e. Allow enough time for components to cool down prior to working in the engine
compartment.
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Procedure 7-146
Material requirements:
Service Kit T07-3611 contains the following parts:
ITEM
PART NO.
QTY
U/M
1
2
3
4
07-07-1920
19-01-1635
19-03-0602
23-02-0027
14
28
28
1
EA
EA
EA
TUBE
DESCRIPTION
GASKET – MARKER LIGHT
SCREW – PANHEAD, 10-32x1.5, STAINLESS
NUT-WELL,BRASS INSERT,#10-32 UNF
THREAD LOCK-LOCTITE 242
Gasket (14 pcs)
07-07-1920
Well nut (28 pcs)
19-03-0602
1.0
Screw (28 pcs)
19-01-1635
Removing the front marker lights, gaskets, and wellnuts
Remove the 7 front marker lights from the front of the vehicle by removing and discard the two 8-32 screws on
each light.
Marker Light 07-07-6108
Remove and discard
the existing screws
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Procedure 7-146
Disconnect the marker light. Do not let the Deutsch connector fall into the vehicle.
Do not let the connector
fall into the vehicle.
Disconnect the lamp
Peel off the existing gaskets, then push the existing wellnuts out of the holes. Discard old gaskets and wellnuts.
Peel existing gasket off
Push both well-nuts out
Gasket and
Wellnuts Removed
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Procedure 7-146
2.0
Installing the well-nuts
Before installing well nuts, enlarge the mounting holes using 3/8 reamer.
Mounting Holes
Using warm water and soap, or a suitable adhesive remover, clean the marker light area completely.
Clean this area completely
Apply 2 drops of Loctite, 23-02-0027, to the well nuts, 19-03-0502, and insert them in the mounting holes.
Firmly press the well nuts into position into the mounting holes and let the adhesive dry for 1 minute.
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Procedure 7-146
3.0
Applying the new gasket
Peel the protective backing off the 07-07-1920 gasket to expose the adhesive and apply the gasket to the
fiberglass, using the screw-holes as a guide.
Remove Protective
Backing from Adhesive
4.0
Gasket Applied
Install the marker light
Reconnect the Deutsch connector to the marker light. Apply Loctite, 23-02-0027, to the 19-01-1635 screws
and fasten to marker light back to the coach. Do not exceed 5 Inch-Pounds torque
Fasten 19-01-1635
Screws to 5 Inch-Pounds
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Procedure 7-146
5.0
Updating the Rear Marker Lights
Repeat sections 1 through 4 for rear marker lights
Marker Light 07-07-6107
End of procedure
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