SYNERGY MFG. 870 INDUSTRIAL WAY, SAN LUIS OBISPO, CA (805) 242-0397
5713 / 5714 JK HEAVY DUTY GAS TANK SKID PLATE
Version 1.1
GENERAL NOTES:
These instructions are also available on our website; www.synergymfg.com. Check the website before
you begin for any updated instructions and additional photos for your reference.
This skid plate assembly is designed to be used along with the Synergy 5710 Jeep JK skid plate
assembly or can be used with the stock cross member and skid plates. We make no claims that this skid
plate will work with any other aftermarket skid plates and is up the purchaser and installer to make it
work.
These installation instructions are for both 2 and 4 door JK models.
We recommend that you perform this installation with a close to empty gas tank, or empty it before you
drop the tank. A full fuel tank is very heavy.
PARTS LIST:
5714 JK 4DR Gas Tank Skid
(1) 5714-01 4DR Gas Tank Skid Plate
(1) 5714-03 Gas Tank Skid Rear Inner Bracket
(1) 5714-04 Gas Tank Skid Mid Inner Bracket
(1) 5714-05 Gas Tank Skid Front Inner Bracket
(1) 5714-06 Gas Tank Skid Rear Outer Bracket
(2) 5714-07 Gas Tank Skid Front / mid outer bracket
(1) 5714-11 Stock Cross member adapter
(1) Hardware kit
o (5) ½-13 UNC x 1.25” long hex head bolt
o (6) ½-13 UNC Flange nut
o (5) ½” Flat washer
o (1) ½-13 UNC x 1.25” long flat head socket cap screw
o (3) 3/8-16 UNC x 1” long flat head socket cap screw
o (10) 3/8-16 UNC Flange nut
o (7) 3/8-16 UNC x 1” long hex head bol
o (7) 3/8” flat washer
5713 JK 2DR Gas Tank Skid
(1) 5713-01 2DR Gas Tank Skid Plate
(1) 5713-02 Gas Tank Skid Front Inner Bracket
(1) 5714-03 Gas Tank Skid Rear Inner Bracket
(1) 5714-06 Gas Tank Skid Rear Outer Bracket
(1) 5714-07 Gas Tank Skid Front / mid outer bracket
(1) 5714-11 Stock Cross member adapter
(1) Hardware kit
o (3) ½-13 UNC x 1.25” long hex head bolt
o (4) ½-13 UNC Flange nut
o (3) ½” Flat washer
o (1) ½-13 UNC x 1.25” long flat head socket cap screw
o (3) 3/8-16 UNC x 1” long flat head socket cap screw
o (8) 3/8-16 UNC Flange nut
o (5) 3/8-16 UNC x 1” long hex head bol
o (5) 3/8” flat washer
Parts / Tools Needed to complete installation:
Basic simple hand tools.
Floor Jack & jack stands / vehicle stands.
Extra person to aide in gas tank removal.
APPROXIMATE INSTALL TIME: 1-2 hours with a vehicle lift. 3-4 hours without a vehicle lift.
1. Unpack the skid plate components from boxes, verify that all parts are intact and in good condition. The
following is a list of included components:
2. Read all the following steps before beginning installation. If you do not have the proper tools or ability to
install the components properly do not attempt installation. Find a creditable, local shop to do the
installation work.
3. Drain the gas from the tank if it’s not close to empty. You can do this by removing the filler hose form the
fuel tank and inserting a drain hose, it needs to be a small hose because there is a flapper valve installed into
the opening.
4. Remove the stock T-case skid plate or any aftermarket T-case skid plate
5. Loosen and remove the passenger side rear lower control arm bolt, pull the bolt out so it is flush with the
inside of the lower control arm bracket
6. It is very helpful to remove and install the tank if you remove the right rear coil spring and disconnect the
drive shaft at the pinion
WARNING: The fuel system is under constant pressure even with engine off. Before servicing fuel rail,
fuel system pressure must be released.
7. Remove fuel fill hose clamp (2) at rear of tank (3).
8. Remove fuel fill hose (1) from fuel tank.
9. Disconnect quick-connect fitting (2), (9) and (10)
The fuel tank skid plate and the fuel tank assembly are removed at the same time. They share common
fasteners.
10. Support tank with a hydraulic jack.
11. Disconnect quick-connect fittings at front of tank (1) and (4)
12. Remove all of the tank mounting bolts.
13. Partially lower tank to gain access to pump module electrical connector.
14. Disconnect electrical connector at fuel pump module.
15. Continue lowering tank for removal.
16. Lift fuel tank from skid plate.
17. Lay the new gas tank skid flat on the ground or work bench with the bottom side down.
18. Loosely bolt the mounting brackets to the skid plate as shown below, leave the outer 3/8 flat head bolt finger
tight but leave the inner 1/2” bolts very loose. Shown below is a 4 door Unlimited model. The 2 dr JK’s do
not have the middle brackets on either side.
4 door brackets shown from front to rear
2 door brackets shown front to rear
Use the supplied 3/8-16 UNC x 1.0” long bolts to attach the outer brackets, use the flange nuts on the inside
with no washers.
Rear outer bracket
Front and mid outer brackets
Use the supplied ½” bolts to attach the inner brackets, each bracket is made for a specific location, i.e., front,
middle and rear so make sure the brackets are in the correct location.
Use a washer under the bolt head and the flange nuts with no washers.
19. Position fuel tank into skid plate.
20. Position fuel tank assembly on a floor jack under the vehicle and prepare to install.
21. Partially raise tank to allow connections at top of tank.
22. Connect electrical connector to fuel pump module.
23. Continue raising tank snugly to body. If you are using the 5710 skid plate assembly, put the front flange of
the gas tank skid on top of the 5710 center skid plate as shown
24. Install hose (4) to tank and install clamp (3).
25. Install all of the stock tank mounting bolts into the frame, tighten enough to allow the tank and brackets to
move for positioning
26. If you are using the Synergy 5710 skid plate assembly, install the three 3/8 flat head bolts with flange nuts
in the from the bottom of the gas tank skid plate
27. Connect quick-connect fittings at front of tank.
28. Connect quick-connect fitting (2), (9) and (10)
29. If you are using the stock transmission cross member, attach the 5714-11 adapter to the front of the gas tank
skid and to the stock cross member with the factory bolts.
30. Tighten the bolts that secure the skid plate to the side brackets, tighten the ½” bolts to 50 ft-lbs, tighten the
3/8” bolts to 20 ft-lbs
31. Tighten the factory frame bolts to 30 ft-lbs.
32. Install the T-case skid plate, if you are using the Synergy 5710-02 T-case skid plate, use the new ½” flat
head bolt and flange nut, if you are using the stock T-case skid, use the new supplied ½” bolt, washer and
flange nut.
33. Installation is complete.
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