INFINITI QX56 2011 Factory Service Manual

BRM-6
< PRECAUTION >
REPAIRING HIGH STRENGTH STEEL
2. Precautions in spot welding HSSThis work should be performed under standard working condi-
tions. Always note the following when spot welding HSS:
 The electrode tip diameter must be sized properly according to
the metal thickness.
 The panel surfaces must fit flush to each other, leaving no gaps.
 Follow the specifications for the proper welding pitch.
Unit: mm (in)
Handling of Ultra High St rength Steel Plate PartsINFOID:0000000006248485
PROHIBITION OF CUT AND CONNECTION
Never cut and joint the lower lock pillar reinforcement (center pillar reinforcement inside frame parts) because
its material is high strength steel plate (ultra high strength steel plate).
The center pillar reinforcement must be replaced if this part is damaged.
PIIA0146E
PIIA0147E
Thickness (T) Minimum pitch (L)
0.6 (0.024)
0.8 (0.031)
1.0 (0.039)
1.2 (0.047)
1.6 (0.063)
1.8 (0.071) 10 (0.39) or more
12 (0.47) or more
18 (0.71) or more
20 (0.79) or more
27 (1.06) or more
31 (1.22) or more
JSKIA0781ZZ
Revision: 2010 May2011 QX56

REPAIRING MATERIALBRM-7
< PREPARATION >
C
DE
F
G H
I
J
L
M A
B
BRM
N
O P
PREPARATION
REPAIRING MATERIAL
Foam RepairINFOID:0000000006248486
During factory body assembly, foam insulators are installed in certain body panels and locations around the
vehicle. Use the following procedure(s) to r eplace any factory-installed foam insulators.
URETHANE FOAM APPLICATIONS
Use commercially available Urethane foam for sealant (foam material) repair of material used on vehicle.
Read instructions on product for fill procedures.
Example of foaming agent filling operation procedure
1. Fill procedures after installation of service part.
a. Eliminate foam material remaining on vehicle side.
b. Clean area after eliminating form insulator and foam material.
c. Install service part.
d. Insert nozzle into hole near fill area and fill foam ma terial or fill enough to close gap with the service part.
2. Fill procedures before installation of service part.
a. Eliminate foam material remaining on vehicle side.
b. Clean area after eliminating foam insulator and foam material.
c. Fill foam material on wheelhouse outer side. 3M™
Automix™ Flexible Foam 08463 or equiva-
lent
1. Urethane foam
A. Nozzle insert hole
: Vehicle front
JSKIA0129GB
Revision: 2010 May2011 QX56

BRM-8
< PREPARATION >
REPAIRING MATERIAL
NOTE:
Fill enough to close gap with service part while avoiding flange
area.
d. Install service part. NOTE:
Refer to label for information on working times.
1. Urethane foam
A. Fill while avoiding flange area
: Vehicle front
JSKIA0130GB
Revision: 2010 May2011 QX56

BODY COMPONENT PARTSBRM-9
< PREPARATION >
C
DE
F
G H
I
J
L
M A
B
BRM
N
O P
BODY COMPONENT PARTS
Underbody Component PartsINFOID:0000000006248487
: Both sided anti-corrosive precoated steel sections
: High strength steel (HSS) sections
: Both sided anti-corrosive steel and HSS sections
JSKIA1950ZZ
Revision: 2010 May2011 QX56

BRM-10
< PREPARATION >
BODY COMPONENT PARTS
NOTE:
 For the parts without a number described in the figure, it is supplied only with the assembly part that the part is included with.
 Tensile strength column shows the largest strength value of a part in the component part.
CAUTION:
If the high strength steel (ultra high strength steel) of this is broken, replace by assembly for the supply part. No. Parts name
Tensile strength
(MPa) Both sided anti-corrosive
precoated steel sections
1. Air box assembly Under 440 ×
2. Side dash (RH & LH) Under 440 ×
3. Lower dash a. T=2.0 mm
(0.079 in)
980
caution×
4. Trim mounting bracket assembly Under 440 —
5. Rear floor board reinforcement assembly Under 440 —
6. Jack mounting bracket Under 440 —
7. Rear floor rear Under 440 ×
8. 3rd seat front mounting bracket assembly Under 440 —
9. Rear floor reinforcement 440 —
10. Inner rear wheelhouse reinforcement (RH & LH) Under 440 ×
11. Rear floor front Under 440 ×
12. 2nd seat crossmember front reinforcement Under 440 ×
13. 2nd seat mounting member assembly 440 —
14. 2nd crossmember (RH & LH Upper) Under 440 —
15. Front seat mounting rear crossmember assembly 440 ×
16. Inner sill (RH & LH) T=1.4 mm
(0.055 in)
980
caution×
17. Front floor reinforcement 440 —
18. Front floor Under 440 ×
19. 2nd crossmember (RH & LH Lower) 440 ×
20. Hoodledge reinforcement (RH & LH) Under 440 ×
21. Hoodledge assembly (RH & LH) Refer to No.22 −24
22. Upper hoodledge (RH & LH) Under 440 ×
23. Lower hoodledge (RH & LH) Under 440 ×
24. Upper rear hoodledge (RH & LH) Under 440 ×
25. Side radiator core support (RH & LH) 440 ×
26. Upper radiator core support (RH & LH) Under 440 ×
27. Radiator core support main assembly 440 ×
28. Front side member assembly (RH & LH) 590 ×
29. 4th crossmember 590 ×
30. 2nd seat mounting crossmember b. T=2.0 mm
(0.079 in)
980
caution×
31. Rear side member (RH & LH) 590 ×
32. 3rd seat mounting bracket assembly Under 440 ×
33. 3rd rear crossmember assembly 590 ×
34. Rear crossmember 590 ×
35. Upper rear end crossmember assembly Under 440 ×
Revision: 2010 May2011 QX56

BODY COMPONENT PARTSBRM-11
< PREPARATION >
C
DE
F
G H
I
J
L
M A
B
BRM
N
O P
Body Component PartsINFOID:0000000006248488
: Both sided anti-corrosive precoated steel sections
: High strength steel (HSS) sections
: Both sided anti-corrosive steel and HSS sections
JSKIA1951ZZ
Revision: 2010 May2011 QX56

BRM-12
< PREPARATION >
BODY COMPONENT PARTS
NOTE:
 For the parts without a number described in the figure, it is supplied only with the assembly part that the part is included with.
 Tensile strength column shows the largest strength value of a part in the component part. No. Parts name
Tensile strength
(MPa) Both sided anti-corrosive
precoated steel sections
1. Hood Under 440×
2. Front fender (RH & LH) Under 440 ×
3. Inner side roof rail (RH & LH) 590 —
4. Upper inner front pillar (RH & LH) c. T=1.6 mm
(0.063 in)
980
caution—
5. Inner center pillar (RH & LH) d. T=1.6 mm
(0.063 in)
980
caution×
6. Center sill reinforcement assembly (RH & LH) Under 440 ×
7. Side body assembly (RH & LH) Refer to No.8 −13
8. Upper front pillar reinforcement (RH & LH) 590 —
9. Lower center pillar brace (RH & LH) e. T=1.8 mm
(0.071 in)
980
caution—
10. Front pillar brace (RH & LH) 590 —
11. Outer sill reinforcement (RH & LH) 590 ×
12. Outer front side body (RH & LH) Under 440 ×
13. Front fender bracket assembly (RH & LH) Under 440 ×
14. Outer sill (RH & LH) Under 440 ×
15. Front door assembly (RH & LH) 440 ×
16. Outer front door panel (RH & LH) Under 440 ×
17. Rear door assembly (RH & LH) 440 ×
18. Outer rear door panel (RH & LH) Under 440 ×
19. Back pillar reinforcement (RH & LH) Under 440 —
20. Inner back pillar (RH & LH) Under 440 —
21. Inner rear side roof rail (RH & LH) Under 440 —
22. Inner rear pillar (RH & LH) 590 —
23. Lower inner rear pillar (RH & LH)v Under 440 —
24. Side panel reinforcement (RH & LH) Under 440 —
25. Outer rear wheelhouse (RH & LH) Under 440 ×
26. Inner rear wheelhouse (RH & LH) Under 440 ×
27. Outer rear wheelhouse extension (RH & LH) Under 440 ×
28. Roof assembly Under 440 —
29. Front roof rail 440 —
30. Roof bow No.3 Under 440 —
31. Roof bow No.4 Under 440 —
32. Roof bow No.5 Under 440 —
33. Rear roof rail 440 —
34. Rear fender (RH & LH) Under 440 ×
35. Back pillar assembly (RH & LH) Under 440 —
36. Rear fender bracket (RH & LH) Under 440 —
37. Fuel filler lid Under 440 ×
38. Rear fender extension (RH & LH) Under 440 ×
39. Back door Under 440 ×
Revision: 2010 May2011 QX56

BODY COMPONENT PARTSBRM-13
< PREPARATION >
C
DE
F
G H
I
J
L
M A
B
BRM
N
O P
CAUTION:
If the high strength steel (ultra high strength steel) of this is broken, replace by assembly for the supply part.
Frame Component PartsINFOID:0000000006248489
: High strength steel (HSS) sections
JSKIA1952ZZ
Revision: 2010 May2011 QX56

BRM-14
< PREPARATION >
BODY COMPONENT PARTS
NOTE:
 For the parts without a number described in the figure, it is supplied only with the assembly part that the part is included with.
 Tensile strength column shows the largest strength value of a part in the component part.
CAUTION:
If the high strength steel (ultra high strength steel) of this is broken, replace by assembly for the supply part. No. Parts name
Tensile strength
(MPa) Both sided anti-corrosive
precoated steel sections
1. Frame assembly Refer to No.2−36
2. Front bumper crossmember assembly T=1.8 mm
(0.071 in)
980
caution—
3. 2nd crossmember assembly 440 —
4. 2nd crossmember reinforcement (RH & LH) 440 —
5. 1st cab mounting bracket (RH & LH) Under 440 —
6. Front side member assembly (RH & LH) 540 —
7. Front suspension bracket assembly (RH & LH) Under 440 —
8. Engine mounting bracket assembly (RH & LH) Under 440 —
9. 2nd cab mounting bracket assembly (RH & LH) Under 440 —
10. 3way connector bracket assembly (RH & LH) Under 440 —
11. Piping bracket assembly (RH & LH) Under 440 —
12. Front bound bumper bracket assembly (RH & LH) 540 —
13. Lower front link mounting bracket assembly (RH & LH) 440 —
14. Diagonal member complete (RH & LH) 540 —
15. Rear engine mounting gusset assembly Under 440 —
16. Rear engine mounting member complete Under 440 —
17. Front fuel tank protector (RH & LH) Under 440 —
18. 3rd cab mounting bracket assembly (RH & LH) Under 440 —
19. Center side member assembly (RH & LH) 540 —
20. 6th crossmember assembly Under 440 —
21. Exhaust bracket (Front) Under 440 —
22. Fuel tank protector (RH & LH Rear) Under 440 —
23. Heat insulator bracket Under 440 —
24. Fuel tank protector assembly (RH & LH) 540 —
25. Rear suspension mounting bracket assembly (RH & LH) 540 —
26. 4th cab body mounting bracket assembly (RH & LH) Under 440 —
27. Rear brake hose bracket (RH & LH) Under 440 —
28. Rear shock absorber bracket assembly (RH & LH) 540 —
29. Rear side member assembly (RH & LH) 540 —
30. 5th cab body bracket (RH & LH) Under 440 —
31. 7th crossmember assembly Under 440 —
32. Exhaust bracket (Rear) Under 440 —
33. Spare wheel crossmember assembly Under 440 —
34. Front under cover bracket assembly Under 440 —
35. Rear end gusset (RH & LH) 440 —
36. Rear end crossmember assembly 540 —
Revision: 2010 May2011 QX56

CORROSION PROTECTIONBRM-15
< REMOVAL AND INSTALLATION >
C
DE
F
G H
I
J
L
M A
B
BRM
N
O P
REMOVAL AND INSTALLATION
CORROSION PROTECTION
DescriptionINFOID:0000000006248490
To provide improved corrosion prevention, the follo wing anti-corrosive measures have been implemented in
NISSAN production plants. When repairing or replacing body panels, it is necessary to use the same anti-cor-
rosive measures.
Anti-Corrosive Precoated Steel (Galvannealed Steel)
To improve repairability and corrosi on resistance, a new type of anti-
corrosive precoated steel sheet is adopted replacing conventional
zinc-coated steel sheet.
Galvannealed steel is electroplated and heated to form Zinc-iron
alloy, which provides excellent and long term corrosion resistance
with cationic electrodeposition primer.
NISSAN genuine parts are fabricated from galvannealed steel. Therefore, it is recommended that NISSAN
genuine parts or an equivalent be used for panel replacem ent to maintain the anti-corrosive performance built
into the vehicle at the factory.
Phosphate Coating Treatment and Cationic Electrodeposition Primer
A phosphate coating treatment and a cationic electrodeposition
primer, which provide excellent corrosion protection, are applied to
all body components.
CAUTION:
Confine paint removal during we lding operation to an absolute
minimum.
NISSAN genuine parts are also treated in the same manner. Therefore, it is recommended that NISSAN gen-
uine parts or an equivalent be used for panel replacement to maintain anti-corrosive performance built into the
vehicle at the factory.
Anti-corrosive WaxINFOID:0000000006248491
To improve corrosion resistance, anti-corrosive wax is applied inside the body sill and inside other closed sec-
tions. Accordingly, when replacing these parts, be sure to apply anti-corrosive wax to the appropriate areas of
the new parts. Select an excellent anti-corrosive wax which will penetrate after application and has a long shelf
life.
DOOR
SIIA2294E
PIIA0095E
Revision: 2010 May2011 QX56