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D - 4
EXTERIOR
If an electrical failure should ever occur the emer-
gency handle may be inserted into the jack post
and the jack can be raised or lowered. Access can
be obtained by twisting the level cap off.
If power head is removed the crank can still be
used.
CAUTION: If power head is removed it must be
synchronized with the jack post.
CAUTION: 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.
WARNING: Do not use the electric
toggle switch (raise and lower) with the manual crank in place on the jack post.
The crank will spin if the switch activates the motor and will cause serious injury.
Use your battery disconnect switch to cut power to the jack.
Maintenance
Once a year the power head should be removed and a liberal amount of grease (prefer-
ably a grease with high melting point) applied directly to the coupling on which the
drive pin rests. DO NOT POUR OIL into the top of the jack post.
Once a year the housing cover should be removed and the gears inspected for proper
lubrication. Remove 4 screws and tap around the edges of the housing to free the
cover. DO NOT insert screwdriver blade, this may damage mating surfaces. If lubrica-
tion is needed, use Mobilith 460 grease or its equivalent.
AXLE AND RUNNING GEAR
Each RUBBER TORSION axle is aligned during manufacturing, and double-checked
on a random basis. Alignment after delivery is the customer’s responsibility.
CAUTION: Never allow heat to he applied to the axle tube since the rubber
providing the spring torsion action will he severely damaged.
Hitting chuck holes or rough railroad tracks while going straight will only cause
misalignment after the tire has been struck many repetitive times. Of course, a deep
enough hole can affect the alignment immediately.
The worse culprit is a curb because they are normally struck at an angle. Surprisingly
rear axles are occasionally damaged when people are attempting to park beside a
curb and are backing up their trailer.
As you look under your trailer is it normal for the axle to be bent up in the middle. This
bend is how the camber is obtained.
Toe-in is built into the axle by very slight bends in the axle tube on each end.