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実用車 Great Dane Champion CPのPDF メンテナンス・マニュアルをオンラインで閲覧またはダウンロードできます。Great Dane Champion CP 17 ページ。

axle alignment
continued
5. Measure the distance, on each side, from the cen-
ter of the end of the front axle to the center of the
end of the rear axle (measurements C and D of the
tandem-axles illustration). These measurements
must be within 1/16" of each other. (Illustrated is a
gauge that simplifies this measurement.) It can be
made of drill rod or pipe fittings. The materials and
details are less important than that the resulting
gauge be rigid and true. (The pointer arms of the
gauge should be parallel and in the same plane.)
CORRECTING MISALIGNMENT
If any of the related measurements are not within stated
dimensions, inspect the trailer suspension thoroughly
for loose, worn, or broken connecting and supporting
parts. Replace worn or broken parts. Then adjust the
suspension to bring the axle or axles into alignment.

upper coupler and kingpin

Inspect the kingpin and the upper coupler on the trailer
at regular intervals to be sure that they have not suffered
damage or undue wear. Although the kingpin is made
of hardened forged steel, it is still subject to wear and
can be chipped or broken with abuse. Always check
the bottom locking flange of the kingpin to determine
its condition. The upper coupler fasteners should be
inspected to see that they are in place and properly
tightened.
Before coupling the trailer to its tractor be certain that
the tractor fifth wheel is properly lubricated and the fifth
wheel jaws are open to receive the kingpin.
If the bottom rail attachment fasteners of a van upper
coupler are damaged they should be replaced with
fasteners of the same design and strength. Loose or
missing fasteners must be replaced. Great Dane should
be contacted for replacement information. If this infor-
mation is not available, Grade 5 (minimum) bolts and
Grade B (minimum) locking type nuts may be used but
must be torqued properly.
Be careful in selecting the proper bolt grip length so
that threads are not at the interface of the coupler/rail
joint. It is recommended that, if possible, the next
larger diameter fastener should be used to provide a
good tight fit. If this is not practical, then replace the
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When there is a slight amount of irreducible misalign-
ment in one axle assembly of a tandem-axles trailer,
the other can sometimes be moved a corresponding
amount in the opposite direction to reduce the tendency
of the trailer to "dogtrack", but it should not be moved
more than 1/16" from its optimum alignment position.
This method of correcting misalignment is not recom-
mended as a permanent and sound solution – there is
no substitute for correctly installed and aligned axles.
The limits of 1/8" appear very small compared with the
overall dimensions of the trailer, but they are recognized
as the maximum permissible limits of misalignment.
Also, the relatively small size of these limits makes it
important that the measurements be accurate.
TOE-IN AND TOE-OUT
Toe-in and toe-out can be checked accurately with front
axle aligning equipment designed for automotive serv-
ice.
AXLE CAMBER
Axle camber should be measured accurately on an
alignment machine made for the purpose. It is often
advisable to consult a qualified specialist with the
equipment both to measure and to correct errors of
camber. NOTE: Most trailer axles have no camber.
fastener with the same size as removed. Drill a
companion hole of the same diameter with proper
spacing between the holes and add an additional
fastener. This method assures adequate fasteners to
contain the upper coupler loads.
BOLT TORQUE REQUIREMENTS
CLEAN DRY THREADS
LB-FT
BOLT SIZE
GRADE 5
GRADE 8
3/8" UNC
30
45
3/8" UNF
35
50
1/2" UNC
75
110
1/2" UNF
90
120
5/8" UNC
150
220
5/8" UNF
180
240
1" UNC
580
900
1" UNF
640
1000

pintle hook

1. Clean and check for proper operation. This should
be done at each TPM.
2. Inspect for worn, damaged or missing parts.
Replace only with compatible replacement
components.
3. Regularly lubricate the latch and lock pivots with a
light-oil lubricant. On models equipped with a
grease fitting, apply a small quantity of grease
through the grease zerk fitting.

support gear

The support gear and brace system is designed to
support a fully loaded trailer at its rated GVWR when
parked on a solid level surface. The brace system and
the mounting bolts should be maintained as manufac-
tured to provide a safe operating condition. Damaged
components must be replaced before the vehicle is
reloaded.
SUPPORT GEAR LUBRICATION
1. Lubrication quantity and recommended intervals
vary according to the conditions in which the
support gears are operated. It is good preventive
maintenance to lubricate the support gear one
time during the first six months of use and every
twelve months thereafter.
2. In severe cold-temperature operations, many
fleets completely fill the top head and gear box
with a high-quality, low-temperature lubricant.

rear impact guard

MAINTENANCE AND REPAIR
Federal Motor Carrier Safety Regulations for rear
impact guards require the proper maintenance and
repair of trailer guards. Trailer guards are subjected to
impacts and stress in docking and loading operations.
These impacts, as well as the stresses applied by the
use of dock restraint equipment, if excessive, can
damage any rear guard. A damaged guard may not
satisfy the performance requirements now mandated
by NHTSA and FMCSA, and may not be as strong as
originally designed and manufactured by Great Dane.
Great Dane cannot be responsible for a guard that
has been damaged, or for one that is not repaired in
accordance with Great Dane's design and manufactur-
ing specifications.
Rear impact guards clearly now have attained the
status of safety equipment and are as important as
lighting and reflector systems or braking systems,
which are also regulated by NHTSA, FMCSA and most
state departments of transportation. Pre-trip inspec-
tions have for years included the DOT bumper. Now
the integrity of rear impact guards must be maintained
to meet NHTSA standards. Broken welds, bent
components, missing or loose fasteners, excessive
corrosion or other damage to any trailer guard will
likely affect its performance in the event of a rear-end
collision. For these reasons, detailed guard inspection,
4. Check mounting bolts for proper torque. For 3/4"
bolts with dry threads use 275-325 lb-ft for grade
5 bolts and 400-450 lb-ft for grade 8 bolts.
5. Check air plunger adjustment. Refer to the
recommendations of the pintle hook manufacturer.
6. The structural mounting assembly must be
inspected at each TPM to insure against fatigue
problems.
service and repair records should be maintained on
all guards for your protection. Repairs must be made
in accordance with the guard's original design specifi-
cations. Any question regarding the repair of a Great
Dane guard should be directed to one of Great Dane's
Distributors or Branch Parts and Service facilities,
which are avail- able to discuss any proposed repair
with its customers. Where possible, Great Dane
recommends that all guard repairs be made at one
of Great Dane's service facilities.
PRESERVATION OF EVIDENCE
In the unfortunate event that a Great Dane trailer is
impacted by another vehicle in a rear-end collision, it
is essential for the protection of both you and Great
Dane that the condition of the guard and its attach-
ments be documented immediately. If possible, photo-
graphs should be taken before the vehicles are sepa-
rated. Photographs should also be taken after separa-
tion, including photographs showing the trailer under-
structure and all guard attachment components.
These photographs should be taken before any repair
is made. Moreover, any guard components that are
removed as part of a repair should be labeled and
saved until all claims arising out of the accident have
been resolved. If you have any questions about these
instructions, please contact Great Dane's Customer
Service Department.
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