Ford/Chevrolet/GMC Multi-Fit
3818AT
3818AT Installation Instructions
GROSS LOAD CAPACITY WHEN USED AS A WEIGHT CARRYING HITCH: 5,000lbs. TRAILER WEIGHT & 500lbs. TONGUE WEIGHT.
GROSS LOAD CAPACITY WHEN USED AS A WEIGHT DISTRIBUTION HITCH: 10,000lbs. TRAILER WEIGHT & 1,000lbs. TONGUE WEIGHT
***DO NOT EXCEED VEHICLE MANUFACTURER’S RECOMMENDED TOWING CAPACITY.***
'97 - '03
FORD F-150,F-250 LD
4
'99 - '08
FORD
SUPER DUTY
'04 - '05
FORD F-150
8
PASSENGER SIDE
FRAME RAIL
DRIVER SIDE
FRAME RAIL
ITEM
1
2
3
4
5
6
7
8
QTY
1
12
12
6
6
2
2
6
9
2
Parts List
PART NUMBER
DESCRIPTION
1/2"
FISHWIRE TOOL
7/16-14" x 1
CARRIAGE BOLT
7/16-14"
HEX FLANGE NUT
1/2-13" x 1-3/4"
CARRIAGE BOLT
HFN 1213
HEX FLANGE NUT
M14-2 x 40mm LG.
HEX BOLT
1/2"
CONICAL TOOTHED WASHER
CM-SP6
.250 X 1.00 X 3.00" SQUARE
HOLE SPACER
CM-13895-S
.250" STRAP
5
9
3
ALIGN HOLES IN STRAP
TO THE PLATE, MARK AND
DRILL HOLE IN FRAME RAIL
(BOTH SIDES)
'99 - '08
CHEVY 1500,2500 LD
PASSENGER SIDE
FRAME RAIL
4
1
8
2
7
5
6
FORD MOUNTING HOLES
CHEVY/GMC MOUNTING HOLES
HITCH WEIGHT: 51lbs.
DRIVER SIDE
FRAME RAIL
INSTALL TIME: 60 MINUTES
3
2
INSTALL NOTES:
– NO DRILLING REQUIRED
(ON '04-'05 FORDS ONLY)
9
'01 - '08
CHEVY/GMC
HD MODELS
GM HD MOUNTING HOLES
INSTALLATION STEPS
1) Place supplied fasteners into position on vehicle where where possible without drilling, per application.
2) Mount side plates to frame rails as shown above (Ford in, Chevy/GMC out). Raise center section into
position and loosely secure to side plates.
3) Drill remaining holes if neccessary. ('03-'04 ford trucks)
4) Install remaining fasteners.
5) Torque all 7/16" fasteners to 50lb-ft, all 1/2" fasteners to 75lb-ft, and all 14mm fasteners to 94lb-ft.
PERIODICALLY CHECK THIS RECEIVER HITCH TO ENSURE THAT ALL FASTENERS ARE TIGHT AND THAT ALL STRUCTURAL COMPONENTS ARE SOUND.
FOR INSTALLATION ASSISTANCE OR TECHNICAL HELP CALL 1-800-655-1662
www.ma s t e r l o c k.c om
Master Lock Company LLC, Milwaukee, WI 53154 U.S.A. | 800-308-9244
Master Lock Canada, Oakville, Ontario L6H 5S7 Canada | 800-227-9599
© 2007 Master Lock Company | All Rights Reserved
82957
08/07