MULTIQUIP Whisperwatt DCA150SSJU4F Operation And Parts Manual page 47

Torque suspension components (Figure 65) as referenced
in Table 16.
table 16. Suspension Torque Requirements
item
3/8" U-Bolt
7/16" U-Bolt
1/2" U-Bolt
Shackle Bolt
Spring Eye Bolt
Shoulder Type
Shackle Bolt
tires/Wheels/lug nuts
Tires and wheels are a very important and critical
components of the trailer. When specifying or replacing
the trailer wheels it is important the wheels, tires, and axle
are properly matched.
caution
alWaYs wear safety glasses when
removing or installing force fitted parts.
Failure to comply may result in serious
injury.
caution
DO NOT attempt to repair or modify a
wheel. DO NOT install in inner tube to
correct a leak through the rim. If the rim is
cracked, the air pressure in the inner tube
may cause pieces of the rim to explode (break off) with
great force and cause serious eye or bodily injury.
tire Wear/inflation
Tire inflation pressure is the most important factor in tire
life. Pressure should be checked cold before operation DO
NOT bleed air from tires when they are hot!. Check inflation
pressure weekly during use to insure the maximum tire life
and tread wear.
Table 17 (Tire Wear Troubleshooting) will help pinpoint the
causes and solutions of tire wear problems.
dca150ssju4f 60 hz generator• operation manual — rev. #0 (11/0614) — page 47
torque (ft.-lbs.)
Min-30 Max-35
Min-45 Max-60
Min-45 Max-60
Snug fit only. Parts must rotate freely.
Locking nuts or cotter pins are
provided to retain nut-bolt assembly.
Min-30 Max-50
traiLer MaiNteNaNCe
table 17. Tire Wear Troubleshooting
Wear Pattern
Center Wear Over inflation.
Edge Wear Under inflation.
Loss of camber
Side Wear
or overloading.
Toe Wear Incorrect toe-in.
Cupping Out-of-balance.
Wheel lockup and
Flat Spots
tire skidding.
lug nut torque requirements
It is extremely important to apply and maintain proper wheel
mounting torque on the trailer. Be sure to use only the
fasteners matched to the cone angle of the wheel. Proper
procedure for attachment of the wheels is as follows:
1. Start all wheel lug nuts by hand.
2. Torque all lug nuts in sequence (see Figure 66). DO
NOT torque the wheel lug nuts all the way down.
Tighten each lug nut in 3 separate passes as defined
by Table 18.
3. After first road use, retorque all lug nuts in sequence.
Check all wheel lug nuts periodically.
table 18. Tire Torque Requirements
First Pass
Wheel Size
ft-lBs
12" 20-25
13" 20-25
14" 20-25
15" 20-25
16" 20-25
Cause Solution
Adjust pressure to particular
load per tire manufacturer.
Adjust pressure to particular
load per tire manufacturer.
Make sure load does not
exceed axle rating.
Align wheels.
Align wheels.
Check bearing adjustment
and balance tires.
Avoid sudden stops when
possible and adjust brakes.
Second Pass Third Pass
ft-lBs ft-lBs
35-40 50-65
35-40 50-65
50-60 90-120
50-60 90-120
50-60 90-120