Pro Series 51021 51 Receiver - Manual

Installation Instructions
Chevrolet Full Size Pickup
GMC Full Size Pickup
(All Models)
Part Numbers:
51021
Hitch Shown In Proper Position
For 6 Ft. beds with Optional
Heavy Duty Suspension.
Equipment Required:
Wrenches: 7/8, 13mm, 18mm, 19mm
Drill Bits: None
Note: On vehicles without factory bumper, it will be necessary to relocate license plate mounting bracket.
1.
Remove and discard M12 hex bolts from end of each frame rail if present.
2. Remove ground wire and ground wire bolt, if present, on driver’s side frame rail.
3. Lift receiver into position, locating slots in receiver over weldnuts in vehicle frame.
Note: For vehicles w/o bumper, locate slot in receiver over fore/aft slot near end of frame.
4. Install M12 hex bolt (supplied) and conical washer through receiver into weldnut in vehicle frame.
Note: See illustration for placement of fasteners on vehicles w/o bumper.
5. Install remaining fasteners as shown.
6. Reinstall ground wire and ground wire bolt to hole in side of side bracket.
Note: On 6’ bed models, spacer (Item 3) located at forward-most attachment on driver’s side may be oriented as shown in Figure 1, if
necessary to insure clearance of rivets. Spacer must sit flat on frame.
Rev. A 6-27-06 N51021 Sheet 1 of 1 z 2001, 2006 Cequent Towing Products
* Spacer .188 X 1.50 X 2.00 Qty. (2) Hex Nut M12 X 1.75 Qty. (2) 5
Spacer .25 X 1.50 X 2.00 Qty. (2) 9 Lock Washer 1/2 Qty. (4) 4
Hex Nut 1/2-13 Qty. (4) 8 Spacer .250 X 1.50 X 2.00 Qty. (4) 3
Flat Washer 1/2 Qty. (2) 7 Conical Washer 1/2 Qty. (4) 2
Hex Bolt 1/2-13 X 1.75 Qty. (4) 6 Hex Bolt M12 X 1.75 X 45 Qty. (2) 1
Tighten all M12 CL10.9 fasteners with torque wrench to 75 Lb.-Ft. (102 N*M)
Note: check hitch frequently, making sure all fasteners and ball are properly tightened. If hitch is removed, plug all holes in trunk pan or other body panels to
prevent entry of water and exhaust fumes. A hitch or ball which has been damaged should be removed and replaced. Observe safety precautions when working
beneath a vehicle and wear eye protection. Do not cut access or attachment holes with a torch.
This product complies with safety specifications and requirements for connecting devices and towing systems of the state of New York, V.E.S.C. Regulation V-5
and SAE J684.
Fastener Kit: 51021-051
Do Not Exceed Lower of Towing Vehicle
Manufacturer’s Rating or
500 (227 Kg) 5000 (2270 Kg)
Weight Carrying
Ball Mount
1000 (454Kg) 10,000 (4540 Kg) Weight Distributing
Max Tongue
WT (LB)
Max Gross
Trailer WT (LB)
Hitch type
Wiring Access Location: PU3
Tighten all 1/2-13 GR5 fasteners with torque wrench to 75 Lb.-Ft. (102 N*M)
1
6
2
3
4
5
8
4
7
3
9
Fasteners typical both sides
Frame
Bumper bracket
Typical both sides
Existing weldnut
Typical both sides
Rivet
Frame
Center of vehicle
Used to reinstall ground
wire and ground wire bolt
Figure 1.
* Only used on 6 FT, beds with Heavy Duty Suspension
*
*
Existing Spacer
Steel Step Bumper
Heavy Duty Suspension
Reinforcement
Required for
vehicles without
bumpers
3
SERIES 51®
8
Form: F205 Rev A 5-6-05