BULLETIN NUMBER:
SB18-C-001A

IMPORTANT SERVICE
INFORMATION FOR:







SERVICE MANAGER

ISSUE DATE:
SEPTEMBER 2019

SERVICE ADVISOR
WARRANTY PERSONNEL

GROUP:
GLASS AND INTERIOR

TECHNICIAN
PARTS DEPARTMENT

DOOR WIND NOISE/WATER INTRUSION – IMPROVED DOOR SEAL
AND ADJUSTMENT PROCEDURE
AFFECTED VEHICLES


2011-2018 MY Isuzu N-Diesel vehicles produced prior to
12/18/2017



2011-2018 MY Isuzu N-Gas vehicles produced prior to 2/15/2018



2018 MY Isuzu FTR vehicles produced prior to 3/1/2018

This bulletin is being revised to update affected model years and supersedes
bulletin SB18-C-001. Please discard bulletin SB18-C-001.
INFORMATION
CONDITION
Some customers may complain about wind noise and/or water intrusion into the cab from
the driver and/or passenger doors of the affected N-Series and FTR trucks.
To correct this condition Isuzu Commercial Truck of America, Inc. (ICTA) is offering a new
door weather strip to improve sealing of the driver and passenger doors.
SERVICE PROCEDURE
WEATHER STRIP REMOVAL & INSTALLATION
1. Prior to starting this service procedure, on single cab N-Series vehicles check the
seal on the cab side of the door opening (See Figure 1) to determine if it is an
original seal design or a previously offered revision. (See Figures 2 & 3.)
a. If the original seals are present as shown in Figure 2, continue to Step
2.
b. If the seals on the vehicle’s cab are as those shown in Figure 3, replace
them with the original designed cab seal and continue to Step 2.
c. If vehicle is an N-Series crew cab or FTR vehicle continue to Step 2.

Additional sealing surface

Figure 1

Figure 2 - Original Seal

Figure 3 – Updated Seal

Original Cab Side Seals
Part Number

Description

Qty

8-98154-665-0

WEATHERSTRIP;FRT S/D,RH

As Necessary

8-98154-666-0

WEATHERSTRIP;FRT S/D,LH

As Necessary

2. Remove the side door seal shown in Figure 4 by pulling door seal from the door.


Using a trim panel tool or wire cutters remove mounting fasteners from
door. (See Figure 5.)

Figure 4

Figure 5

3. Wipe down seal mounting surface using a clean cloth.
4. Attach the new door seal:
 Start at the top, outside corner, as shown by red arrow in Figure 6.





Fasten the seal, working across the top of the door and working to the
bottom – see yellow arrows in Figure 6.
Go back to the top corner and connect the seal down the opposing side of
the door, working towards the bottom.
Now fasten the seal across the bottom, as shown by yellow arrows in
Figure 7.

Figure 6

Figure 7

5. Repeat the procedure on the remaining door/s.
DOOR ALIGNMENT INSPECTION
6. Measure the offset of the doors at the locations shown in Figure 8. Specifications
are shown in Table 1. Measurements are made using two metric rulers as shown
in Figures 9, 10 & 11.
K
F

S

Figure 8 – Offset Measuring
Sections S, F & K

Figure 9 – Section F – Top front corner
of door

Figure 10 – Section K – Top rear
corner of door

Figure 11 – Section S – Lower rear of
door

TABLE 1
Location
F
K&S

Door Surface Offset Specifications
Measurement
3.3mm
0.0mm

+/- 1.5mm
+/- 1.5mm

7. Close the door to ensure there is no binding and that the door closes correctly.
 If the door’s offset is in alignment and not binding, no further action is
necessary.
 If the door’s offset is not aligned or binds and adjustment is necessary,
proceed to Door Adjustment, Step 8.
DOOR ADJUSTMENT
8. Open and support the door with a piece of wood using a floor jack. (See Figure
12.)
9. Using a grease pencil make an alignment mark for reference on the door hinge
and front door panel. (See Figure 13.)

Figure 12

Figure 13

10. Loosen bolt Number 1 shown in Figure 14 using a 3/8” drive ratchet, a 1” long-3/8”
drive extension, and a 12mm crow’s foot. After the bolt is loose, remove the bolt
using a 12mm wrench. Replace bolt Number 1 with a new bolt, the part number
for which is provided on the last page of this bulletin.
IMPORTANT: DO NOT TORQUE BOLTS UNTIL AFTER DOOR ALIGNMENT IS
COMPLETED.

11. Install the new bolt by hand tightening, and then secure the bolt with the same
tools used to remove it earlier.
NOTE: The bolts should be loose enough that the door/hinge can be moved but
still tight enough that the assembly does not move freely.
12. Repeat Steps 8 through 11 for bolts 2, 3, and 4. (See Figure 14.)
NOTE: The gap between the top of the door and the cabin should be adjusted
with the window down to prevent glass breakage.
13. Adjust the doors.
a. If the door protrudes from the body or is recessed into the body lines, adjust
the door where the door hinge bolts to the door marked by red arrows in
Figure 15.


Red arrows – moving the door away from the interior will raise the door
from the cab when the door is closed.

b. If the door is not centered in the door frame, adjust the door where the door
hinge bolts to cab, marked by blue arrows in Figure 15.


Blue arrows – move the door in the direction needed to center the door in
the door frame.

14. When the doors have been adjusted correctly, torque all the door bolts to the

specified torque using a 3/8" drive torque wrench, a 1" long-3/8" drive extension,
and a 12mm crow’s foot. Tightening Torque - 21.6 N•m (15.9 lb•ft)

1

2

3
4

Figure 14

Figure 15 - View from inside driver’s door.
PARTS INFORMATION

The following part numbers are for revised seals and non-shouldered bolts. The nonshouldered bolts will allow slight movement so the door can be adjusted. Parts are to be
obtained from AIPDN.

Model
N-Series
N-Series
N-Series
FTR
FTR
ALL

Part Number
8-98484-919-0
8-98484-920-0
8-98486-845-0
8-98484-921-0
8-98484-920-0
8-98049-756-0

Description
WEATHERSTRIP;FRT S/D,RH
WEATHERSTRIP;FRT S/D,LH
WEATHERSTRIP;REAR S/D
WEATHERSTRIP;FRT S/D,RH
WEATHERSTRIP;FRT S/D,LH
HINGE BOLT

Qty
1
1
2 (as needed)
1
1
16 (4 per hinge, 8
per door, as
needed)

WARRANTY INFORMATION
The following labor operation information is provided for warranty claim submission and
applicable to vehicles still covered by the New Vehicle Warranty.
Labor Operation
C1067
C1068

C1127

C1128

Description
WEATHERSTRIP (DOOR SEAL), FRONT
DOORS BOTH - ALIGN OR REPLACE
WEATHERSTRIP (DOOR SEAL) - BOTH
WEATHERSTRIPS AND BOTH DOORS
ADJUSTED
WEATHERSTRIP (DOOR SEAL)- REAR
DOORS BOTH - CREW CAB - ALIGN OR
REPLACE
WEATHERSTRIP (DOOR SEAL)- REAR
DOORS BOTH - CREW CAB – REPL &
ADJUST

Labor Time
0.6
1.4

0.6

1.4