Blue Bird Coachworks 450 LXi, Руководство пользователя

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6-1 Tire/Wheel Change Procedures
450 LXi Owner Manual
~ 6-1-2 ~
Rev. “C”
6-1.1.2 Drive Axle Dual Wheels
Repeat steps 1 through 10, Front Axle Wheels.
Loosen inner lug nuts (studs with square heads), if inner wheel is to be replaced.
Remove outer lug nuts from the (5) studs which have lock rings and slide hub cover over remaining lug nuts.
Remove the (5) remaining lug nuts and wheel.
Remove inner lug nuts and inner wheel, if inner wheel is to be replaced.
Install replacement wheel and inner lug nuts. Tighten progressively, in the sequence shown on lug nut tightening
diagram, starting with #1 and proceeding with #10. Final torque should be between 450 and 500 foot-pounds.
Install outer wheel (or replacement wheel) and lug nuts over inner lug nuts marked 1, 3, 7, 9 and 6. Torque nuts in the
following sequence, 1, 7, 6, 3 and 9 to between 450 and 500 foot pounds.
Install hub cover over the (5) lug nuts holding wheel to hub. Place lock rings and lug nuts on remaining inner lug nuts 10,
5, 2, 4 and 8.
Replace wheel saver.
Torque nuts in the following sequence 10, 2, 8, 5 and 4 to between 450 and 500 foot-pounds. Wheel must be on the
ground for fi nal torque.
Return to step 13 of Front Axle Wheels and continue.
6-1.2 Tire Infl ation – Towing – Trailer
6-1.2.1 Tire Infl ation
Under-infl ation causes needless tire wear and promotes excessive fuel consumption. Check tire pressures on a regular basis.
The Federal Certifi cation Label shows the cold tire infl ation pressures necessary to support the Gross Axle Weight Ratings.
These pressures can be reduced to greatly improve the ride quality after the actual axle weights have been determined (see
Vehicle Loading in the Introduction section).
The chart below is taken from the Michelin Tire Data Book and shows the recommended tire infl ation pressures for various
axle weights. If any axle weight is on the borderline, always use the higher pressure. Be sure weight is distributed evenly side
to side.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
LOADS PER AXLE (lbs.) AT DIFFERENT PRESSURES
2 TIRES: SINGLE (8) 4 TIRES: DUAL (D)
INFLATIONS PRESSURE (psi)
MICHELIN SIZE - 12r-22.5 MAX. SPEED - 65 MPH
lbs.
psi 70 75 80 85 90 95 100 105 110 115
S 9,410 9,980 10,560 11,140 11,740 12,310 12,910 13,480 14,060 14,780
d 16,840 17,860 18,960 20,030 21,130 22,190 23,220 24,220 25,220 26,440
In addition, a tire infl ation information plate is located inside the road side luggage compartment near the air
gauge and hose. These are normal pressures as long as the axle weights are not in excess of those shown.
NOTE: When checking torque on dual wheels loosen all outside lug nuts. Check torque on inner lug nuts (studs
with square heads) for torque value shown above, then torque outer lug nuts to value shown above.