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Maintenance
Power Jack Maintenance
1� Inspect at least twice each year for corrosion.
Clean with a solution of baking soda and water,
and then apply a thin coat of grease. The motor
ground screw and mounting bolts must be cleaned
too if a ground continuity problem occurs.
2� Once each year, extend jack as far as possible and
clean inner ram tube. Coat tube with light coat of
silicone spray lubricant. The Electric Drive Motor
Landing Leg system is protected by a 30 amp fuse.
If replacement is necessary, replace only with a
12VDC 30 amp automotive spade fuse.
3� Before each use, inspect jack tubes and replace if
bent or damaged.
4� The Robofoot does not need to be lubricated or
modified after installation.
NOTE
Leave tow vehicle transmission in NEUTRAL
when lifting both units. Dolly wheels are not
recommended. Always retract stabilizing jacks
before using your jack under load.
Breakaway Switch
1� Pin
2� Breakaway Switch
To prevent corrosion within the breakaway switch, pull
the pin out and spray the inside of the switch through
the hole with an electric contact cleaner (such as Spra-
Kleen). Applying a drop of light household oil on the pin
and the groove near the base of the pin will allow the
pin to operate freely. Immediately reinsert pin. Perform
this procedure every 90 days.
CAUTION
Allow no more than 20 to 30 seconds pin
separation as damage to brake magnets may
8-10
occur.
Battery (Lead Acid)
Your Airstream trailer is factory equipped with a Lifeline
AGM GPL-27 battery installed.
Battery Amp Draw and Testing
For example, a battery with a 100 amp-hour capacity
can deliver 1 amp for 100 hours or it can deliver 100
amps for one hour. Batteries are able to deliver current
longer if they are discharged at a lower rate and deliver
less current at a higher discharge rate.
All batteries will have an Amp Hour (AH) rating. The
AH rating on a battery is its C/20 rate or 20 hour
discharge rate. As long as a battery is discharged over
a 20 hour, or longer period, it will deliver 100% of its
rated capacity. If it is discharged in less time at higher
currents it will deliver less capacity.
For proper load testing the battery needs to be fully
charge and the voltage should be greater than 12.8
volts. A typical load test should be 3 times the amp
hour for 15 seconds. At the end of 15 seconds the
voltage of the battery should stay above 9.6 volts. If the
battery cannot reach a fully charged voltage of 12.8 or
greater the batteries will need to be equalized.
NOTE
When checking the state of charge the battery
needs to have been disconnected from a charging
source and any loads for a minimum of four hours.
Before removing the batteries verify that shoreline
power is not connected. Risk of electrical shock
may be present.
The following chart shows the approximate % of
charge SOC (State of charge) vs. OCV (Open circuit
voltage) and specific gravity for Interstate batteries.
WARNING
2020 Classic
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