Installation Guide

GROSS LOAD CAPACITY WHEN USED AS A WEIGHT CARRYING HITCH: LBS. TRAILER WEIGHT & LBS. TONGUE WEIGHT.
* * * D O N OT EX CE ED V EH I CLE M AN U F ACT U RE R'S R EC OM M EN DED T OWI NG C AP AC I T Y .* * *
WARNING: ALL NON-TRAILER LOADS APPLIED TO THIS PRODUCT MUST BE SUPPORTED BY AUXILIARY STABILIZING STRAPS.
* * F AI LU RE T O PROPERLY S U P PO RT N ON -T RAI LER LOA D S W IL L V OI D P RO DU CT WA RRA N T Y * *
HAVING INSTALLATION QUESTIONS? CALL TECHNICAL SUPPORT AT 1-877-287-8634
INSTALLATION STEPS
PERI ODI CA LLY CH ECK T HI S RECE I V ER H I T CH T O EN SU RE T H AT ALL FAST EN ERS
ARE T I GH T AN D T H AT ALL ST RU CT U RAL COM PON EN T S ARE SOUN D.
Curt Manufacturing Inc., warrants this product to be free of defects in material and/or workmanship at the time of retail purchase by the original purchaser. If the product is found to be defective,
Curt Manufacturing Inc., may repair or replace the product, at their option, when the product is returned, prepaid, with proof of purchase. Alteration to, misuse of, or improper installation of
this product voids the warranty. Curt Manufacturing Inc.'s liability is limited to repair or replacement of products found to be defective, and specifically excludes liability for incidental or
consequential loss or damage.
3,500 525
MERCEDES BENZ GLK350
04/15/2014
13177
1. Remove 3 fascia clips from each side of the vehicle with a flat head screwdriver. This will allow the
fascia to flex slightly for socket access during installation.
2. Remove exhaust tips by removing T40 torx screws from 3 locations on each side of the vehicle with
a short torx bit and ratchet extension. Tips will be reinstalled when hitch installation is complete.
3. Lower exhaust by removing (2) isolators on the driver side muffler, (2) isolators on the passenger
side muffler, and (2) isolators forward of the mufflers.
(See RUBBER ISOLATOR REMOVAL DIAGRAM.)
Note: Exhaust can pivot on driver side at ball joint location for increased access to rear vehicle
mounting location.
4. Locate plastic fascia support webbing and drill out center inboard section. Enlarge section for
3/4" socket access in order to tighten hitch to nut plates over bumper beam.
5. Locate supplied nut plates from hitch and hardware assembly. Nut plate weldnut threads may need
to be cleaned with a wire brush before assembly. (See WELDNUT CLEANING DIAGRAM.)
6. Place supplied nut plates over bumper beam, as shown.
7. Raise hitch into position over exhaust.
8. Secure hitch to nut plates, with finger tightened 1/2" x 5" hex bolts and 1/2" conical toothed washers,
as shown. (Note: Be sure to slide hitch as far forward as possible but not so it rests on the weld
seam on the vehicle bumper beams.)
9. Raise mounting strap behind vehicle crossmember, as shown.
10. Secure mounting strap to hitch with finger tightened 7/16" hex flange nuts, as shown.
11. Raise nut plate in front of vehicle crossmember.
12. Secure nut plate to mounting strap with finger tightened 1/2" x 2 1/2" hex bolts and 1/2" conical
toothed washers, as shown.
13. Torque all 1/2-13 x 5" hex bolts to 75 lb-ft. Torque all remaining 1/2" hardware to 110 lb-ft and all
7/16" hardware to 70 lb-ft.
14. Raise exhaust back into position.
15. Reattach fascia screws (3 locations each side of vehicle.)
16. Reattach exhaust tips (3 mounting locations each side of vehicle.)
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