MULTIQUIP Power WHISPERWATT DCA150SSI Operation And Parts Manual page 42

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 16 (Tire Wear Troubleshooting) will help pinpoint the
causes and solutions of tire wear problems.
Table 16. 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.
page 42 — DCa150SSI/DCa150SSIu 60 hz gen. • operatIon anD partS manual — rev. #0 (11/23/09)
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.
TrAILEr MAINTENANCE
Suspension
The leaf suspension springs and associated components
(Figure 60) should be visually inspected every 6,000 miles
for signs of excessive wear, elongation of bolt holes, and
loosening of fasteners. Replace all damaged parts
(suspension) immediately. Torqued suspension components
as detailed in Table 17.
figure 60. Major Suspension Components
table 17. 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
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