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GENERAL MAINTENANCE

5

2

2

5 BOLT

6 BOLT

8 BOLT

GENERAL MAINTENANCE (continued)

3. The tightening of the fasteners should be done in stages. Following the recommended sequence, tighten fasteners per wheel torque chart below.

4. Wheel nuts/bolts should be torqued before first road use and after each wheel removal. Check and re-torque after the first 10 miles, 25 miles, and again at 50 miles. Check periodically thereafter.

lbs.-ft. of torque. Torque wrenches are the best method to assure the proper amount of torque is being applied to a fastener.

NOTE: Wheel nut or bolts must be applied and maintained at the proper torque levels to prevent loose wheels, broken studs, and possible danger- ous separation of wheels from your axle. Be sure to always use only the fasteners matched to the cone angle of your wheel (usually 60° or 90°). The proper procedure for attaching your wheels is:

  • 1.

    Start all bolts or nuts by hand to prevent cross threading.

  • 2.

    Tighten bolts or nuts in the following sequence.

1

6

1

6

3

4

5

1

5

3

8

4

3

5

7

4

2

AXLE

WHEEL

STUD

STEEL WHEEL

ALUMINUM WHEEL

SIZE

SIZE

SIZE

TORQUE

TORQUE

2000#

13"

1/2”

50#-75#

N/A

3500#

15"

1/2”

90#-120#

90#-120#

5200#

15"

1/2”

90#-120#

90#-120#

6000#

16"

9/16”

90#-120#

90#-120#

7200#

16"

9/16”

90#-120#

90#-120#

8000#

12"-16.5"

5/8”

90#-120#

N/A

8000#

17.5"

5/8”

275#-325#

N/A

1st Stage

2nd Stage

3rd Stage

20/25

55/80

Full Torque

ft. lbs.

ft. lbs.

TORQUE STAGES

WHEEL TORQUE REQUIREMENTS

GENERAL MAINTENANCE (continued)

Warranties on axles and trailer will not apply to damage or injuries caused by loose or improperly tightened lug nuts or broken studs. Inspect wheel stud holes for roundness. If oblong, this is a sure sign that the unit has been run with improperly tightened lugnuts. In these instances, the rim must be replaced.

DOORS, BARLOCKS AND RAMP HINGES Door holdbacks are designed to hold doors open when on uneven ground. They are not designed to hold doors open under windy conditions. Lubricate all door and ramp hinges every 3 months with a SAE 30 weight engine oil. WD-40 and similar lubricants will free hinges, however, they will also lose all lubricating qual- ities within a short period of time. Use a conventional grease gun tip to apply grease at ramp hinges.

RIGHT

WRONG

Parallel with ground and tow vehicle

Trailer not level, adjust hitch

HITCH HEIGHT You must adjust the hitch ball height to position tag trailers in a level condition. This loads the axles equally and gives a desirable tongue weight. Under these conditions your trailer should ride properly and not sway back and forth.

COUPLER OPERATION Check the coupler or Kingpin for fatigue, damage, cracks or missing parts before towing. Test the lock mechanism for complete and correct latching so the trailer will not come unhooked. For ball type couplers, make sure the coupler and ball size match. If you are using a bumper hitch type coupler, it is recom- mended to put a bolt or similar device through the latch mechanism when hooking to the tow vehicle for safety. It is advised that mini fifth wheel hitches should have a wheel diameter that is close to the width of Pace American’s Pinbox. A smaller wheel diameter does not get adequate vertical support from the Pinbox and pushes the bottom plate upward. CHECK COUPLER SIZE PRIOR TO HOOKUP

6

GENERAL MAINTENANCE

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