CHIEF WK2 Guide de configuration

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

BUMPER REMOVAL -- Overland, Laredo and Limited (All Years)

BUMPER REMOVAL -- S-Limited, Summit and SRT (All Years)

WK2 Winch -- Chassis Mounts (All Years) [Inc. Hooks/Points and/or WK2 Air Suspension KIT]

WK2 Winch -- Chassis Mounts Non-Winch [Inc. Hooks/Points and/or WK2 Air Suspension KIT]

WK2 Oﬀ-Road Front Bumper (ACC Kit)

Bumper Fascia Trimming

WK2 Oﬀ-Road Front Bumper Installation

WK2 Oﬀ-Road Front Bumper (Number Plate Mount KIT)

WK2 Oﬀ-Road Front Bumper (Advanced Parking Sensor KIT)

Mounting WK2 Oﬀ-Road Front Bumper

WK2 Oﬀ-Road Front Bumper (Apex Grille)

WK2 Oﬀ-Road Front Bumper (Nomad Grille)

Bumper Completion

Appendix

Troubleshooting

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

WK2 Chassis Mounts

Chassis, Mount Brackets (LH + RH)

WK2 OFF-ROAD FRONT BUMPER “ORFB”

REF

QTY

DESCRIPTION

REF

QTY

DESCRIPTION

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

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

BOX 1

BOX 2

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

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)

M6 x 25mm Hex Head Bolt (SS316)

M6 Wedge-Lock Extended Washer (SS316)

M6 Hex Flange Nylock CL70 Nut (SS316)

REF

QTY

DESCRIPTION

REF

QTY

DESCRIPTION

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)

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]

BOX 3

BOX 4

(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

WK2 Oﬀ-Road Front Bumper Mach II Aero-Bar

Mach II Aero-Bar (Gloss Black or Billet Silver)

M12 Nut Plate

M12 x 30mm Countersunk Socket CL70 (SS316)

REF

QTY

DESCRIPTION

REF

QTY

DESCRIPTION

WK2 Oﬀ-Road Front Bumper (Nomad Grille)

Grille Bar (Gunmetal)

Mount, Grille Bar Inner (Left + Right)

Mount, Grille Bar Outer (Left + Right)

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]

WK2 OFF-R0AD FRONT BUMPER (FUSION FAIRLEAD) [All Variants]

REF

QTY

DESCRIPTION

REF

QTY

DESCRIPTION

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)

M12 Wedge-Lock Extended Washer (Zinc Flake)

M8 x 28mm Dia HD Flat Washer (Zinc)

BOX 5

BOX 6

BOX 7

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

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)

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

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)

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)

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

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)

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)

WK2 OFF-ROAD FRONT BUMPER (NUMBER PLATE MOUNT KIT - AUS)

REF

QTY

DESCRIPTION

REF

QTY

DESCRIPTION

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)

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

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

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.

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).

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.

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

Remove underside OEM fasteners

1. By hand, quarter turn the fasteners to release them.

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.

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

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)

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