DYNASTY 2006 CHASSIS INFORMATION — SECTION 10 • 331
Oil Change Intervals
The recommended oil change interval is based on average operating conditions, speeds and loads. Limited
service applications may allow the recommended interval to be increased. Severe applications may require the
recommended interval to be reduced. For more information, contact a Dana/Eaton service representative.
Recommended Interval Change:
• Change the fl uid whenever the seals are replaced, the brakes are relined or at 30,000 miles (48,000 km).
However, check the lubricant twice a year (spring and fall) for contamination. Change as needed.
• If yearly mileage is less than 30,000 miles, change the fl uid twice a year (spring and fall).
Lubricant Type:
• Texaco Syn-Star GL 75w/90 synthetic. Specifi cations, minimum ambient temperature - 15º F (-26.1º C).
There is no maximum ambient temperature. Lubricant temperature must never exceed 250º F (+121º C).
To Drain:
• Place a suitable container below the bearing cover and remove the drain plug. If the cover does not have a
drain plug, remove the screws retaining the cover plate to drain the lubricant.
• Replace plug or cover plate and fi ll bearing assembly with the recommended lubricant.
Lubrication Maintenance
The tag axle slack adjuster and “S” cam shaft
need to be lubed periodically to ensure proper
brake operation. Lubricate every 10,000 miles
or 3 months.
SHOCK ABSORBER
The shock absorber is a hydraulic device used to dampen suspension/ body movement. Road
surface irregularities are compensated for by the shock absorber. The Roadmaster chassis
incorporates the “Bilstein” shock in the design of the exclusive air glide suspension system.
This shock absorber is a telescopic, mono tube unit fi lled with nitrogen gas and hydraulic oil.
The result of the mixture is uninterrupted damping for the smallest of wheel defl ection.
By design, a self lubricating seal is used which will allow approximately 10% of the total
oil capacity to pass onto the piston rod. The gradual process of oil loss does not affect the
performance of the shock absorber during the service life. This process will be evident after
a long period of service by an oil fi lm on the body of the shock absorber. The appearance
of a coating or fi lm on the body or rod is completely normal, it is an indication the shock is
functioning normally.
Road holding, handling, balance and braking characteristics all can be contributed to the
shock absorber. The operating conditions for which the shock absorber must endure will
determine the life span. However, since the only moving part is the piston rod, there are no
springs, hinges or pins to wear out, get weak or deteriorate.
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