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15

TRAILER BRAKES

TRAILER BRAKES–BRAKE ADJUSTMENT*

Brakes must be adjusted after the first 200 miles of operation when the brake shoes and drums have seated. After the initial adjustment the brakes should be readjusted at 3000 mile intervals or as use and performance requires. The brakes should be adjusted in the following manner:

1.) Jack up trailer and secure on adequate capacity jack stands. Lifting and support-

ing must be on the main I-beams or the perimeter tube frame that the axle is attached to. Check that the wheel and drum rotates freely. 2.) Remove the adjusting hole cover from the adjusting slot on the bottom of the brake

backing plate. 3.) With a screwdriver or standard adjusting tool, rotate the starwheel of the adjuster

assembly to expand the brake shoes. Adjust the brake shoes out until the pres- sure of the linings against the drum makes the wheel very difficult to turn. 4.) Now rotate the starwheel in the opposite direction until the wheel turns freely with

a slight lining drag. Usually 8 clicks. 5.) Replace the adjusting hole cover and lower the wheel to the ground. 6.) Repeat the above procedure on all brakes.

See your hitch specialist for your brake controller. They will provide a brake controller manual which gives information on proper controller adjustments. Load and road conditions will require different sensitivity settings of the con- troller. Heavy loads will need maximum sensitivity as opposed to an empty

trailer which will require a very light braking action.

*FOR ADDITIONAL SERVICE

& ADJUSTMENT SEE ENCLOSED DEXTER SERVICE

MANUAL.

Outer Bearing

Inner Bearing

Rubber Plug

Grease Flow

Grease Zerk

Metal End Cap

Spring Loaded Double Lip Seal

EZ-LUBE HUBS See EZ-Lube Hub instructions in Dexter service manual. Lube hubs every 12 months or 12,000 miles. Check the Dexter Service Manual for recommended wheel bearing lubrication specifications.

MATCH AIR PRESSURE & TIRE CAPACITY TO WEIGHT ON AXLES

TIRE LOAD LIMITS (LBS) AT VARIOUS INFLATION PRESSURES (PSI) COLD

125

120

115

110

105

100

95

90

85

80

75

70

65

60

55

50

45

40

35

30

25

PSI 20

TIRE SIZE

(Letters in parenthesis denote load range for which BOLD FACE loads are maximum)

1045(C)

840(B)

5.30-12 bias

1270 1360(C)

1190

1100

1000

905

795

B78-13 bias (ST175/80D13)

USE ONLY APPROVED TIRE AND WHEEL COMBINATIONS. FAILURE TO DO SO OR FAILURE TO COM- PLY WITH LOAD AND INFLATION LIMITS MAY RESULT IN SERIOUS INJURY OR DEATH.

2380 2540(D)

2270

1640 1760(C)

1720 1820(C)

1640 1760(C) 1720 1820(C) 2020 2150

1530

1610

1530 1610 1880

1430

1480

1430 1480 1760

1300

1360

1300 1360 1600

1170

1120

1170 1120 1430

1030

1070

1030 1070 1260

F78-14bias (ST205/75D14)

F78-15 bias (ST205/75D15)

ST205/75R14 ST205/75R15 ST225/75R15

Note: capacity limited to 2150 lbs. @ 50 PSI when mounted on 5 bolt wheel

3675 3750(G)

3415 3550

3300

3170

3042(E)

2905

2765

3000(D) 2485 2623(D)

2730 2335

2600 2205

2430 2030

2090(B) 2270 1700 1870

ST235/80R16 LT235/85R16

Note: Load range G tire requires compatible wheel, cannot be used with standard 16" wheels

4495 4650 4805(H)

4340

4180

3860 4020

3695

215/75R17.5

Note: Load capacity limited to 4500 lbs. @ 125 PSI with Dexter 17-241 single wheel

The information shown above is valid only for trailer (ST) or light truck (LT) design tires. Passenger car tires (P designation) used in trailer service must be de-rated 10% from the maximum load capacity branded on the tire sidewall (branded load capacity divided by 1.10 equals the load capacity for trailer service.)

Actual unit or axle load ratings will be determined by the lowest rated component (Tire, Wheel, or Axle)

16

TIRE LOAD LIMITS

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