CHIEF WK2 Configuration guide

WK2 OFF-ROAD FRONT BUMPER
INSTALL INSTRUCTIONS
REVISION B
29 August 2022

WK2 OFF-ROAD FRONT BUMPER
INSTALL INSTRUCTIONS
TABLE OF CONTENTS
PAGE
PRE-INSTALLATION CHECKLIST
3
BUMPER REMOVAL -- Overland, Laredo and Limited (All Years)
9
BUMPER REMOVAL -- S-Limited, Summit and SRT (All Years)
10
WK2 Winch -- Chassis Mounts (All Years) [Inc. Hooks/Points and/or WK2 Air Suspension KIT]
14
WK2 Winch -- Chassis Mounts Non-Winch [Inc. Hooks/Points and/or WK2 Air Suspension KIT]
19
WK2 Off-Road Front Bumper (ACC Kit)
23
Bumper Fascia Trimming
24
WK2 Off-Road Front Bumper Installation
27
WK2 Off-Road Front Bumper (Number Plate Mount KIT)
27
WK2 Off-Road Front Bumper (Advanced Parking Sensor KIT)
28
Mounting WK2 Off-Road Front Bumper
32
WK2 Off-Road Front Bumper (Apex Grille)
34
WK2 Off-Road Front Bumper (Nomad Grille)
35
Bumper Completion
36
Appendix
37
Troubleshooting
39
Box 1 -- WK2 Chassis Mounts (Front)
Box 2 -- WK2 Off-Road Front Bumper “ORFB”
Box 3 -- WK2 Winch Cradle (2011-2015) OR (2016+)
Box 4 -- WK2 Apex Grille (all variants)
Box 5 -- WK2 Nomad Grille
Box 6 -- WK2 Mach II Aero-Bar (all variants)
Box 7 -- WK2 Fusion Fairlead (all variants)
Box 8 -- WK2 ACC KIT
Box 9 -- WK2 Advanced Parking Sensor KIT (all variants)
Box 10 -- WK2 Number Plate Mount KIT (USA & AUS)
VERIFY THAT ALL COMPONENTS HAVE ARRIVED

WK2 OFF-ROAD FRONT BUMPER
INSTALL INSTRUCTIONS
TABLE OF CONTENTS
REVISION B
29 AUGUST 2022
PAGE of3 40
WK2 CHASSIS MOUNTS (Front)
REF
QTY
DESCRIPTION
A
1
2
WK2 Chassis Mounts
Chassis, Mount Brackets (LH + RH)
A
WK2 OFF-ROAD FRONT BUMPER “ORFB”
REF
QTY
DESCRIPTION
REF
QTY
DESCRIPTION
A
B
C
D
E
F
G
H
I
J
K
L
1
1
2
2
4
10
10
20
4
4
4
2
WK2 Off-Road Front Bumper “ORFB”
WK2 Off-Road Front Bumper “ORFB"
Fairlead Cover
Bumper Mount (Left + Right)
Stone Guard (Left + Right)
Bumper Support
M10 x 30 Hex Head 10.9 Bolt (Zinc)
M10 x 25 Hex Head 10.9 Bolt (Zinc)
M10 Wedge-Lock Extended Washer (SS316, Black)
M10 CL10 Hex Flange Nut (Zinc)
M6 Bolt Head Protector, Slotted
M6 Nutsert, Thinsheet, SS316
M6 Sheetmetal Nut
M
N
O
P
Q
R
S
T
U
V
-
-
6
4
8
16
4
4
4
12
2
6
2
1
M6 x 40 Hex Head 10.9 Bolt (Zinc)
M6 x 20 Hex Head CL70 Bolt (SS316)
M6 x 20 Socket Button Head CL50 Bolt (SS316, Black)
M6 Wedge-Lock Extended Washer (SS316, Black)
M6 Hex Flange Nylock CL70 Nut (SS316)
M6 Hex Flange CL70 Nut (SS316)
Blanking Plug, 14mm Dia
7.5 x 16mm X-Mas Tree Plug (14mm Head)
M6 Wedge-Lock Extended Washer (Zinc Flake)
M8 x 28mm Dia HD Flat Washer (Zinc)
4g Anti-Seize Pouch
Chief Products Shop Rag
A
B
D
C
M
F
N
G
H
P
O
T
L
I
J
K
S
R
E
Q
BOX 1
BOX 2
U
V

WK2 OFF-ROAD FRONT BUMPER
INSTALL INSTRUCTIONS
TABLE OF CONTENTS
REVISION B
29 AUGUST 2022
PAGE of4 40
WK2 WINCH CRADLE [All Variants]
REF
QTY
DESCRIPTION
REF
QTY
DESCRIPTION
A
B
C
1
1
2
WK2 Off-Road Front Bumper (Apex Grille)
Apex Grille (Gloss Black or Billet Silver)
Apex Grille Fascia (Gun Metal)
M6 x 20mm Countersunk Socket (SS316)
D
E
F
2
2
2
M6 x 25mm Hex Head Bolt (SS316)
M6 Wedge-Lock Extended Washer (SS316)
M6 Hex Flange Nylock CL70 Nut (SS316)
B
C
D
E
F
G
H
I
J
K
L
M
N
O
REF
QTY
DESCRIPTION
REF
QTY
DESCRIPTION
AA
AB
B
C
D
E
F
G
H
1
1
2
2
2
6
6
2
2
WK2 Winch Cradle
Winch Cradle (2011-2015)
Winch Cradle (2016+)
Chassis Strengthening Plate (Left + Right)
Bonnet Support Strut (Left + Right)
Top Mounting Plate
M12 x 35mm Hex Head 10.9 Bolt (Zinc)
M10 x 40mm Hex Head 10.9 Bolt (Zinc)
M8 x 25mm Hex Head 10.9 Bolt (Zinc)
M6 x 25mm Hex Head 10.9 Bolt (Zinc)
I
J
K
L
M
N
O
-
6
6
2
2
2
2
4
1
M12 Wedge-Lock Extended Washer (Zinc Flake)
M10 Wedge-Lock Extended Washer (Zinc Flake)
10 x 32mm Dia Flat Washer (Zinc)
M8 Wedge-Lock Extended Washer (Zinc Flake)
M6 Wedge-Lock Extended Washer (Zinc Flake)
M10 Hex CL10 Nut (Zinc)
6.5 x 27mm X-Mas Tree Plug (20.5mm Head)
4g Anti-Seize Pouch
WK2 OFF-ROAD FRONT BUMPER (APEX GRILLE) [All Variants]
A
B
C
D
E
F
BOX 3
BOX 4
AB
AA
(2011-2015)
(2016+)

WK2 OFF-ROAD FRONT BUMPER
INSTALL INSTRUCTIONS
TABLE OF CONTENTS
REVISION B
29 AUGUST 2022
PAGE of5 40
WK2 OFF-ROAD FRONT BUMPER (NOMAD GRILLE)
REF
QTY
DESCRIPTION
REF
QTY
DESCRIPTION
A
B
1
2
WK2 Off-Road Front Bumper Mach II Aero-Bar
Mach II Aero-Bar (Gloss Black or Billet Silver)
M12 Nut Plate
C
1
4
M12 x 30mm Countersunk Socket CL70 (SS316)
REF
QTY
DESCRIPTION
REF
QTY
DESCRIPTION
A
B
C
2
2
2
WK2 Off-Road Front Bumper (Nomad Grille)
Grille Bar (Gunmetal)
Mount, Grille Bar Inner (Left + Right)
Mount, Grille Bar Outer (Left + Right)
D
E
F
2
20
18
Vent Bar (Gunmetal) (Left + Right)
M6 x 20mm Socket Button Head CL50 Bolt (SS316, BLACK)
M6 Hex Flange Nylock CL70 Nut (SS316)
WK2 OFF-ROAD FRONT BUMPER (MACH II AERO-BAR) [All Variants]
A
B
C
D
E
F
A
B
C
WK2 OFF-R0AD FRONT BUMPER (FUSION FAIRLEAD) [All Variants]
B
C
D
E
REF
QTY
DESCRIPTION
REF
QTY
DESCRIPTION
A
B
C
1
2
2
WK2 Off-Road Front Bumper (Fusion Fairlead)
Fusion Fairlead (Gloss Black, Billet Silver or Gunmetal)
M12 x 20mm Hex Head 10.9 Bolt (Zinc)
M8 x 16mm Hex Head 10.9 Bolt (Zinc)
D
E
1
2
2
M12 Wedge-Lock Extended Washer (Zinc Flake)
M8 x 28mm Dia HD Flat Washer (Zinc)
BOX 5
BOX 6
BOX 7
A

WK2 OFF-ROAD FRONT BUMPER
INSTALL INSTRUCTIONS
TABLE OF CONTENTS
REVISION B
29 AUGUST 2022
PAGE of6 40
WK2 OFF-ROAD FRONT BUMPER (ACC KIT)
REF
QTY
DESCRIPTION
REF
QTY
DESCRIPTION
A
B
C
D
E
F
G
H
1
2
2
2
2
2
4
4
WK2 Off-Road Front Bumper (Advanced Parking Sensor Kit)
Sensor Housing Top Bar (Gloss Black or Billet Silver)
Sensor Housing Inner (Left + Right)
Sensor Retainer Inner (Left + Right)
Sensor Housing Outer (Left + Right)
Sensor Retainer Outer Large (Left + Right)
Sensor Retainer Outer Small (Left + Right)
Sensor Harness Extensions (VATT-21-010)
Sensor Harness Extensions (VATT-21-011)
I
J
K
L
M
N
O
1
4
1
4
4
2
2
4
Blanking Plug 20mm Dia Head
Sensor Sticker Sheet
M6 x 60mm Countersunk Socket (SS316)
M6 Hex Flange Nylock CL70 Nut (SS316)
M6 x 12mm Button Head Socket (SS316)
M6 Flat Washer (SS316)
3.5mm (6G) x 13mm Screw, Self Tapping (Zinc)
REF
QTY
DESCRIPTION
REF
QTY
DESCRIPTION
A
B
C
D
E
1
2
1
2
4
WK2 Off-Road Front Bumper (ACC Kit)
ACC Guard (Textured Black)
ACC Mount Brackets Non-Winch (Left + Right)
ACC Mount Bracket Winch
M10 x 25mm Hex Head 10.9 Bolt (Zinc)
M6 x 20 Socket Button Head CL50 Bolt (SS316, Black)
F
G
H
I
2
2
2
4
M10 Wedge-Lock Extended Washer (SS316, Black)
M6 Wedge-Lock Extended Washer (SS316, Black)
M10 CL10 Hex Flange Nut
M6 Hex Flange Nylock CL70 Nut (SS316)
A
B
C
I
H
G
F
E
D
A
D
B
G
H
K
L
M
I
C
E
F
J
N
O
BOX 8
BOX 9
WK2 OFF-ROAD FRONT BUMPER (ADVANCED PARKING SENSOR KIT) [All
Variants]

WK2 OFF-ROAD FRONT BUMPER
INSTALL INSTRUCTIONS
TABLE OF CONTENTS
REVISION B
29 AUGUST 2022
PAGE of7 40
WK2 OFF-ROAD FRONT BUMPER (NUMBER PLATE MOUNT KIT - USA)
REF
QTY
DESCRIPTION
REF
QTY
DESCRIPTION
A
B
C
D
E
F
1
1
2
2
4
4
WK2 Off-Road Front Bumper (Number Plate Mount Kit USA)
Centre Plate - USA
Side Plate - USA
M10 x 25mm Socket Button Head CL70 Bolt (SS316, Black)
M10 CL10 Hex Flange Nut
M6 x 20mm Socket Button Head CL50 Bolt (SS316, Black)
M6 x 12mm Socket Button Head CL50 Bolt (SS316)
G
H
I
J
K
1
4
4
5
4
M6 x 20mm Countersunk Socket (SS316)
M6 Wedge-Lock Extended Washer (SS316, Black)
M6 Hex Flange CL70 Nut (SS316)
M6 Hex Flange Nylock CL70 Nut (SS316)
M6 Flat Washer (SS316)
B
A
H
G
F
E
D
C
I
J
K
WK2 OFF-ROAD FRONT BUMPER (NUMBER PLATE MOUNT KIT - AUS)
H
G
F
E
D
C
I
J
K
A
B
REF
QTY
DESCRIPTION
REF
QTY
DESCRIPTION
A
B
C
D
E
F
1
1
2
2
4
4
WK2 Off-Road Front Bumper (Number Plate Mount Kit AUS)
Centre Plate - AUS
Side Plate - AUS
M10 x 25mm Socket Button Head CL70 Bolt (SS316, Black)
M10 CL10 Hex Flange Nut
M6 x 20mm Socket Button Head CL50 Bolt (SS316, Black)
M5 x 12mm Socket Button Head CL50 Bolt (SS316)
G
H
I
J
K
1
4
4
5
4
M6 x 20mm Countersunk Socket (SS316)
M6 Wedge-Lock Extended Washer (SS316, Black)
M5 Hex Flange CL70 Nut (SS316)
M6 Hex Flange Nylock CL70 Nut (SS316)
M5 Flat Washer (SS316)
These install instructions will include instructions for the following compatible products:
•WK2 Recovery Point
•WK2 Recovery Hook
•WK2 Sump Protection Plate
BOX 10
BOX 10
COMPATIBLE PRODUCTS

WK2 OFF-ROAD FRONT BUMPER
INSTALL INSTRUCTIONS
TABLE OF CONTENTS
REVISION B
29 AUGUST 2022
PAGE of8 40
INSTALLATION START
REQUIRED TOOLS
NOTES
Tape Measure
Felt Tip Marking Pen
Tape
Utility Knife
Punch Tool
1/2” (3/8”) Drive Ratchet
10mm Socket
16mm Socket
10mm Combination Spanner
16mm Combination Spanner
H4 Hex Key
Ruler (150mm Minimum)
Small reciprocating Saw (Saber Saw)
Smooth Files, Small (Flat & Round)
Screwdriver (flat blade)
1/2” (3/8”) Drive Extension
13mm Socket
18mm Socket
13mm Combination Spanner
18mm Combination Spanner
H8 Hex Key
• Left and Right are defined from the drivers perspective.
• All fasteners to be installed using supplied “Anti-Seize” for best
performance.
• Do not over-tighten fasteners.
• Photos are representative only. They may show prototype parts and
be taken from multiple vehicles.
IMPORTANT
• PROPER INSTALLATION IS ESSENTIAL TO THE PERFORMANCE OF THIS PRODUCT.
• ONLY INSTALL THIS PRODUCT ON A 2011-2021 JEEP GRAND CHEROKEE.
• ONLY USE THE PROVIDED HARDWARE FOR INSTALLATION.
• DO NOT MODIFY THE STRUCTURE OF THIS PRODUCT IN ANY WAY.
• CHECK PRODUCT REGULARLY FOR DAMAGE. REPLACE IMMEDIATELY AT FIRST SIGN OF DAMAGE.
• CHECK FASTENER TIGHTNESS REGULARLY AND TIGHTEN IF REQUIRED.
HELPFUL TIPS
•Final tightening of fasteners is best done after fitting all the components into place and gradually
tightening to achieve the best fit.
•Use of the supplied anti-seize will prevent fasteners from becoming seized and ensure ease of
disassembly in future.
•Due to the modular nature of the WK2 Off-Road Front Bumper, the installation steps vary
accordingly. Pay attention to the prompts in the blue boxes for guidance.
•It is recommended a second person assist when handling the vehicle Bumper Fascia and/or the
ORFB.

WK2 OFF-ROAD FRONT BUMPER
INSTALL INSTRUCTIONS
TABLE OF CONTENTS
REVISION B
29 AUGUST 2022
PAGE of9 40
2
Detach Fender Flare Fasteners
1. Remove (1) M6 Bolt on each side, (drivers &
passengers).
2. Remove (2) Plastic Rivets with punch tool on each
side, (drivers & passengers).
3. Remove (2) plastic push fasteners on each side,
(drivers & passengers).
NOTE: It might be easier to turn the wheel so that it points inwards.
1
Remove Lower Fascia
1. Remove the lower fascia and set aside. Refer to the
Owners Manual for basic instructions.
NOTE: This can be a tricky process. If you need some help, we’ve provided
a ‘How To’ article on our website, (www.chiefproducts.com.au/blogs/
how-to/11555201-wk2-lower-front-fascia-removal-installation).
3
Disconnect Fender Flares
1. Pull the wheel well lining from under the fender
towards the inside.
2. Push the (3) plastic tab style clips from the inside to
release the front of the fender.
3. Pinch the (2) plastic clips above the wheel from the
inside.
4. Do this for both sides (driver & passenger).
NOTE: Not required for SRT & Summit style Bumper Fascia.
4
Remove Plastic Fasteners from Engine Bay
1. Using a flat head screw-driver, remove (2) plastic push
fasteners.

WK2 OFF-ROAD FRONT BUMPER
INSTALL INSTRUCTIONS
TABLE OF CONTENTS
REVISION B
29 AUGUST 2022
PAGE of10 40
5
Remove underside OEM fasteners
1. By hand, quarter turn the fasteners to release them.
7
Disconnect High Pressure Headlamp Washer
1. Secure Washer Panel and gently draw out Washer
from the Bumper Fascia.
2. Holding the Washer gently, release the mount tags and
remove Washer Panel from Bumper Fascia.
6
SUMMIT
Releasing Bumper Fascia from Fender
1. Clear wheel liner from bumper connection.
2. Remove lower (white) clip from retainer by depressing
the tag.
NOTE: Use of a flathead screwdriver can help release plastic white clip.
Fender
Bumper
Retainer
8
Unclip Upper Facia
1. Unclip upper facia from wheel wells on each side
(drivers & passengers).
2. Unclip upper facia from head lights in engine bay on
each side (drivers & passengers)
3. Set aside the upper facia in a safe place.
NOTE: For 2011-2012 Australian WK2’s disconnect the headlight washer
hose on the left side of the vehicle, (not shown).
IF YOU HAVE:
• Summit Bumper (Go To Step 6)
• Overland Bumper (Go To Step 7)
IF YOU HAVE:
• High Pressure Headlamp Washer on Bumper Fascia (Go To Step 7)