Convertible Top - Improvements and Diagnosis

Classification:
BF93-005

Section:
Body/Frame

Model:
1991-92 M30 Convertible

Reference:
TECHNICAL BULLETIN ITB93-009

Date:
February 11, 1993

M30 CONVERTIBLE - PRODUCT IMPROVEMENT SUMMARY

APPLIED MODELS:
1991-92 M30 Convertible

SERVICE INFORMATION:

The M30 Convertible has evolved during the past two production years through the integration of various product quality improvements. However, due to the many "running production changes," and the use of a Random Production Schedule by the Convertible's principle vendor, ASC, it may not be possible to identify, by V.I.N. or Production Date, the build level of an M30 Convertible.

There is one significant production date, June 15, 1991, where several important top stack improvements were integrated. The improved top stack can be identified by the following:

The two (2) socket set screws that align the center rails have been eliminated. In their place are two (2) small, black-colored wedges that are secured to the outboard corners of the # 1 bow. These adjustable wedges assist in the center rail-to-rear rail alignment (Figure 1).

NOTE:
The significance of identifying the improved top stack assembly is that each vehicle equipped with the above-identified wedges has re-calibrated Control, Intermediate, and Balance Links in the Top Stack Assembly; ensuring consistent top stack release and closure and provides a dimensionally-correct foundation for any needed window adjustments.

These top stack improvements for the M30 Convertible will affect the nature of any repairs necessary to achieve a water-tight, dimensionally-correct top stack assembly, which also has acceptable wind noise parameters.

The "ASC Production Date" may not be helpful to the Infiniti Dealership Technician because M30 Convertibles are produced at the ASC Factory in an "as received," random, V.I.N. sequence. This means that the ASC Production Date does not sequentially relate to the vehicle's V.I.N. However, as of November 7, 1991, ASC stamped their production sequence number, starting with No. 471, on the ASC Conversion Label.

In this Bulletin, a series of tables have been prepared which identify possible complaint areas according to Symptom - Cause - Countermeasure - C/M Part # (where appropriate) - and ASC Production Date.

RELATED SERVICE INFORMATION:
^ ITB91-017A M30 Convertible Field Service Action.
^ ITB93-007 Header Reveal Molding Field Service Action.
^ ITB93-008 M30 Convertible Top Boot Fit (New Style Top Boot).
^ ITB92-053 Infiniti M30 Convertible System Service Responsibilities.

M30 CONVERTIBLE DIAGNOSTIC WORKSHEET:

To assist Dealerships and ASC Licensees in the diagnosis and repair of the M30 Convertible, the M30 Convertible Diagnostic Worksheet [P/N: "INF 110-D-3/92"] has been developed. The form will assist in defining Symptoms, Operating Conditions, Incident Location, and selecting the appropriate Countermeasure. The form will also aid in communication with ASC Licensees, by documenting the specific service conditions. The ASC Licensee should receive the form attached to the Infiniti Dealer's [sublet] Work Order (Infiniti Dealer retains the white copy; ASC Licensee will return the pink copy with the repaired vehicle).

Diagnostic Worksheets will be provided to all Infiniti Dealerships, free-of-charge. These forms can be ordered from Dyment Distribution Services using normal Forms and Literature Ordering Procedures. A reduced-size sample of the M30 Diagnostic Worksheet is included in this bulletin.

SPECIAL CAUTION for WATER/WIND LEAKS at DOOR GLASS INTERFACE WITH TOP STACK: Do not proceed with any window adjustments until you have confirmed that the topstack center rails are correctly aligned and that the upstops are in serviceable condition and correctly adjusted. Refer to Symptoms # 2 and # 5 for alignment information. Window adjustment procedures are detailed on page 10-5 of the July 1991 M30 Convertible Service Manual Supplement.

CONVERTIBLE TOP DIAGNOSTIC AID

Improper opening or closing of the top mechanism
Does the top open and close?
Do you hear anything working?
Does the top stop while opening?
Does the top stop while closing?
Is it difficult to pull into the augers from the pause position?
Once engaged in the augers, does the top pull down fully and evenly?

Water or air leaks into cabin
Is water found in the trunk?
After sitting in the rain?
After driving in the rain?
After washing the vehicle?
Where in the trunk do you see water?
Is the vehicle level when this happens?
Is water found on the cabin floor?
After sitting in the rain?
After driving in the rain?
After washing the vehicle?
Where in the cabin do you see water?
Is the vehicle level when this happens?
Is water or air entering the vehicle past the windows?
At the seam of the two windows?
At the seam of the two weatherstrips above the door windows?
At the seam of the two weatherstrips above the 1/4 windows?
Near the door mirror?
At the top rear of the door window?
Around the door itself?

Top cover/canvas or rear vision imperfections
Is there damage to the canvas?
Vandalism, weather or unknown?
Holes, tearing or other?
On the roof area?
On the "sail" panel area? (The area aft of the 1/4 windows)
Is there damage to the ceiling? (Interior roof fabric)
Vandalism, weather or unknown?
Holes, tearing or other?
On the roof area?
On the "sail" panel area? (The area aft of the 1/4 windows)
Does the canvas sag, look deformed or balloon?
While driving?
While stationary?
Which area?
Front, middle or rear?
Are there imperfections in the rear vision?
Distortion?
Scratches?
Inside or outside?
Discoloring?

I. WATER/AIR LEAKS

II. MECHANICAL REPAIRS TO TOPSTACK

III. AESTHETIC/SOFT MATERIAL PROBLEMS WITH TOPSTACK

WARRANTY INFORMATION

Rear Spoiler Attachments

Rear Tack Strips

Trunk Seal Not Contacting Trunk Lid