Great Dane Champion CP Manual de mantenimiento - Página 9
Navegue en línea o descargue pdf Manual de mantenimiento para Vehículo utilitario Great Dane Champion CP. Great Dane Champion CP 17 páginas.
suspensions
continued
The shock absorbers should be replaced at the first
sign of leaking hydraulic fluid. Worn shocks will allow
tire hop and yield poor handling characteristics.
Many air suspensions are equipped with air control
kits. The air control kit allows the raising or lowering
of the vehicle bed by inflating or exhausting air from
the air suspension. Do NOT operate the vehicle when
the suspension is in the lowered or raised position.
Improperly maintained air suspensions will result in
trailer suspension damage which includes bushing
wear and irregular tire wear.
By customer specification, Great Dane may have
installed any of the following air-spring suspensions on
your new trailers.
Neway or SAF Holland models
Reyco models
Hendrickson models
Meritor models
Tuthill models
Please reference the bibliography in the back of the
manual to obtain address for ordering manufacturer-
specific maintenance manuals.
running gear assembly
Inspection of upper running gear rail weld attachment
to the trailer for weld fatigue cracks is a requirement of
the annual FMCSA inspection. All trailer structures
should be inspected for weld fatigue cracks and/or
loose fasteners and any found should be corrected as
a part of routine PM (preventative maintenance) serv-
ice. Any defects in a trailer should be corrected to the
manufacturer specifications before the trailer is
returned to service.
FIXED SUSPENSION
1. If the trailer is equipped with a fixed suspension,
visually check all bolts connecting the suspension
frame assembly to the upper running gear rails.
2. If these bolts need replacing, use only Grade 5
(minimum) bolts with Grade B (minimum) locking-
type nuts. Be careful in selecting the proper bolt
grip length so that threads are not at the interface
of the rail/frame joint.
SERVICING RIMS & WHEELS
For information on servicing wheels and rims, refer to
OSHA 29 CFR 1910.177 and to the appropriate wheel
and rim manufacturer's manuals. Also refer to
Servicing Single-Piece and Multi-Piece Rim Wheels,
U.S. Department of Labor pamphlet, OSHA 3086 and
the accompanying two chart set, available from OSHA
regional offices.
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LEAF-SPRING SUSPENSION
Check the torque of all suspension bolts after initial
break-in period on the road and thereafter at regular
intervals not to exceed 25,000 miles. Follow the
torquing recommendations of the suspension
manufacturer. If they are not available, use the follow-
ing table of torque recommendations for clean dry
threads. The use of lubricants will apply more tensile
force for the same torque. If lubricants are used,
decrease torque approximately 30%.
1"
14 UNC
350 -375 lb-ft
7/8"
14 UNF
275 -300 lb-ft
5/8"
18 UNF
75 -90 lb-ft
5/8"
18 UNF
125 -155 lb-ft (step bolts)
1/2"
45 -50 lb-ft
It is especially important to maintain torque on U-bolts,
equalizer bolts, and torque arm bolts. Torque the nut
side of torque arm bolts only. Torquing the bolt heads
will not produce the desired clamping force.
NOTICE:
Loose U-bolts can result in spring
damage. Improperly torqued bushing bolts can
produce premature bushing wear.
warning
Tire and wheel/rim servicing can be extremely
dangerous and must be done only by trained
personnel using proper tools and procedures.
Information about tire and wheel servicing can
be obtained from:
US Department of Labor
OSHA Publications Office
200 Constitution Ave, NW
Room Number N3626
Washington, DC 20210
Telephone: 800-321-6742
NHTSA
Auto Safety Hotline
1200 New Jersey Avenue, SE
Washington, DC 20590
Telephone: 800-424-99153
www.safercar.gov
danger
Tires must only be inflated while in a restraining
device/safety cage.
SINGLE-PIECE RIM WHEELS
Illustrated, complete safe operating procedures are
provided on the wall chart "Mounting and Demounting
Procedures for Truck/Bus Tires" available from the
Department of Transportation, and OSHA.
The following minimum steps are recommended to
provide maximum safety when servicing single-piece
wheels:
• The tire must be completely deflated by the
removal of the valve core before demounting.
• Mounting and demounting of the tire must be per-
formed only from the narrow ledge side of the
wheel. Care must be taken to avoid damaging the
tire beads, and the tire must be mounted only on a
compatible wheel of mating bead diameter and
width. Proper tools must be used.
• A non-flammable bead lubricant must be applied to
bead and wheel mating surfaces before assem-
bling, unless the wheel manufacturer recommends
against the use of any lubricant.
rim and wheel inspection
and maintenance
1. Check all metal surfaces thoroughly, including area
between duals and on inboard side of wheel.
Watch for:
a. Excessive rust or corrosion buildup
b. Cracks in metal
c. Bent flanges, resulting from road obstructions
d. Deep rim tool marks on rings or in gutter areas
e. Loose, missing or damaged nuts or clamps
f.
Bent or stripped studs
g. Damaged or missing rim drive plates
h. Mismatched rim parts
2. Remove damaged rims or wheels.
• If a tire changing machine is used, the tire may be
inflated only to the minimum pressure necessary to
force the tire bead onto the rim ledge and create an
airtight seal before removal from the tire changing
machine.
• If a bead expander is used, it must be removed
before the valve core is installed and as soon as the
rim wheel becomes airtight (when the tire bead
slips onto the bead seat).
• The tire must always be inflated within a restraining
device/safety cage.
• The tire must not be inflated to more than the cold-
inflation pressure molded in the sidewall unless a
higher pressure is recommended by the manufac-
turer.
• Cracked, broken, bent, or otherwise damaged
wheels must not be reworked, welded, braced, or
other wise heated.
3. Mark damaged or hazardous areas so that part will
be removed from service.
warning
Excessively corroded or cracked rims or rings
can be dangerous. Deflate tires prior to the
removal of rims or wheels from vehicle.
4. Replace damaged parts. Insure that replacements
are made with the proper sizes and types of rim
wheels.
danger
Be sure that replacements are made with the
proper sizes and types of rim wheels.
5. Inflate tires only to recommended air pressures.
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