atwood Truck Camper Jacks User Manual

A Division of Dura Automotive Systems

E E E R R R

E E R R

CAMPER JACK CONTROL

LITERATURE NUMBER MPD 87903

ACME & BALL SCREW

TRUCK CAMPER JACKS

INCLUDES REMOTE CONTROL

FOR ELECTRIC BALL SCREW JACKS

(4 JACK SETS)

ENGLISH, FRANCAIS (et Canada)

REFERENCE NUMBERS REFER TO ILLUSTRATIONS ON BACK PAGE

SAFETY ALERT SYMBOLS

Safety Symbols alerting you to potential personal safety hazards. Obey all safety messages following these symbols.

WARNING	CAUTION
avoid possible	avoid possible
injury or death	injury and/or property damage

FOR YOUR SAFETY

READ ALL INSTRUCTIONS BEFORE OPERATING JACKS Installer: Provide these instructions to the consumer. Consumer: Keep documents for future reference.

Atwood Acme and Ball Screw Truck Camper Jacks are designed to be used in sets of four with one at each corner of the truck camper. The maximum static load and lifting capacity is:

SCREW	SYSTEM	PER JACK
Acme	2,250 lbs.	1,250 lbs.
Ball	3,900 lbs.	2,200 lbs.
Heavy Duty Ball	5,000 lbs.	2,800 lbs.

Atwood makes two types of Electric Ball Screw Truck Camper Jacks (EBSTCJ); one with remote capability and one without. They are not interchangeable. Our remote control is designed for use only with Atwood Electric

Ball Screw Truck Camper Jacks (EBSTCJ) equipped for remote control capability. The camper must be wired specifically for the remote.

See Chart below for the recommended maximum loading for a four jack system based on the bracket kit used.

		Truck Camper Wet Weight
		2250 lbs. –	2250 lbs. –	3900 lbs. –
	Bracket Kit	or less	3900 lbs.	5000 lbs.
	Narrow Front
	Narrow Rear	X
	with lower clamp
	Wide Front
	Wide Rear	X
	with no lower clamp
	Wide Front
	Narrow Rear	X	X
	with lower clamp
	Wide Front, Wide	X	X	X
	Rear with lower clamp

WARNING

PERSONAL INJURY & PRODUCT DAMAGE

•Never store camper on the jacks.

•Never exceed rated jack and/or camper capacity. Camper can collapse and tip over.

•Do not operate jacks if the camper exceeds gross vehicle weight.

•Only operate jacks when camper is unoccupied and contents are secured and properly distributed.

•Maintain proper load distribution and a safe distance when raising or lowering camper.

•Park the camper on a firm, level site.

•Never walk under the camper when it is extended on the jacks.

•Do not lift the truck with the jacks.

•Installation •Operation •Maintenance

Effective 5/22/07

WARNING

PERSONAL INJURY & PRODUCT DAMAGE

•Unplug the remote control when not in use.

•Store remote in a secure place, away from access by children.

INSTALLATION

NOTE: Camper manufacturer must insure camper side walls are sufficiently reinforced at corners for mounting jacks.

1.Bolt together flat and formed pieces of each corner bracket using 3/8˝ x 1˝ grade 5 bolts, flat washers and bolt retainers (supplied) as shown in FIG 1 or 4. Bolts must extend from the formed piece through the flat piece.

2.Position brackets on corners so that jack will be perpendicular to ground when camper is level. (See FIG 3) On rear corners with a lower support bracket, place it at least 12˝ below main corner bracket. See FIG 3-A.

3.On all corner brackets and lower support brackets, drive 1/4˝ diameter lag screws (not supplied) into camper’s corner through center of each slotted hole into camper framework. Minimum length of lag screw must be 1-1/4˝. See FIG 2-A for wide brackets and FIG 5-A for narrow brackets.

NOTE: Holes are slotted to allow brackets to tighten up to the camper’s corners as installation is made. Positioning lag screws in center of slots permits bracket to shift without affecting the integrity of the corner.

4.On wide brackets, use steel angles (not supplied) on inside of camper’s corners to provide sufficient support. See FIG 2-B. Use four

(4)3/8˝ bolts, lock washers and nuts (not supplied) to bolt through each wide corner bracket, side wall and steel angle. Torque bolts to 15-20 ft. lbs.

5.Mount jacks to 3/8˝ x 1˝ long grade 5 hex bolts protruding from corner brackets (installed in STEP 1 above). Use flat washers and locknuts (SUPPLIED) to retain jack. Torque to 15-20 ft. lbs. See FIG 2-C for wide and 5-B for narrow (bolt retainer not shown for clarity).

NOTE: Jack must be located so handle clears all obstructions when cranked.

NOTE: For trucks with dual rear wheels, use Swing-Out Brackets to allow the front jacks to swing out to a wider position to clear dual wheel fenders. Follow Swing-Out Bracket instructions MPD 87904 for proper installation and safe use.

6.For rear jacks with lower clamps, carefully spread clamps far enough to slip over rear jack tube. Push onto jack and attach to lower support brackets with 3/8˝ x 1˝ long, grade 5 hex bolts, flat washers, and locknuts provided. Torque bolts to 15-20 foot lbs.

Electric Ball Screw Jack WITHOUT REMOTE CONTROL - FIG 6 & 7

7.Locate electrical receptacles on front and rear of camper as shown by the rear view in FIG 9 with 4-wire connectors on driver side and 2- wire connectors on passenger side of camper. Receptacles must be mounted within 5˝ from edge of camper, see FIG 9-A.

8.Make electrical connections as shown in FIG 10 with front and back jacks on separate 30 amps circuits with fuses located within 18˝ of battery. Use 10 gauge stranded copper wire. Wiring must met RVIA codes.

A - Driver side	D - 30 amp fuse
B - Passenger side	E - Black w/White stripe
C - Red w/White stripe	F - Black
	G - Red

1

Electric Ball Screw Jack WITH REMOTE CONTROL - FIG 7

7.Mount two wire connectors on front and rear of camper within 5˝ from edge of camper.

CAUTION

PRODUCT DAMAGE

•Disconnect power to the power relay module prior to HiPot testing of the camper or the microprocessor will be damaged.

TO INSTALL THE WIRELESS REMOTE CONTROL, REFER TO INSTRUCTION MPD 87920.

OPERATION

WARNING

CAMPER CAN TIP OVER

•Soft or spongy areas may cause jacks to sink, causing camper to tip over. Park the camper on a firm, level site.

•Insure area below and around jack is clear of obstructions.

•Do not place blocks under the jack for additional ground clearance.

•Always keep the front of camper higher than or equal to the rear

of the camper. Never allow either side or end of camper to be more than 4˝ out of level. See FIG 12 and 13.

•Do not use the jacks to raise the truck, such as to change a tire. The jacks are designed only for lifting and lowering the camper onto the truck and for stabilization of camper.

CAUTION

PRODUCT DAMAGE

•Do not over extend or over retract jacks. Each jack has built in stops. Excessive force applied against the stops will cause damage.

•Do not use pneumatic tools to operate any jack. They can over-extend or over-retract the jack.

•Do not use the jacks to level the truck and camper. This will overload the jacks.

ACME JACK — FIG 14

CAUTION

PERSONAL INJURY/PRODUCT DAMAGE

•Do not use pneumatic tool to run drill adapter.

•Battery operated drills, 9.6V to 18V, are powerful. Hold drill with both hands to protect your wrist. Keep loose clothing and body parts away from drill as the reaction torque from the drill may cause it to kick back.

•Refer to your drill manufacturer’s operation manual.

To extend or retract jack, push handle onto drive shaft and rotate slightly until drive pin is engaged in handle slot. Rotate handle clockwise to raise camper or counterclockwise to lower camper. Follow instructions in TO LIFT OR LOWER TRUCK CAMPER section. To remove handle, reverse above procedure. A drill adapter is provided, for even faster setup or tear-down (FIG 15 and caution above). Follow instructions in TO LIFT OR LOWER TRUCK CAMPER section.

MANUAL BALL SCREW JACK — FIG 16

To extend or retract jack, push handle onto alignment tube and depress release bar with plastic push collar (FIG 17). Hold plastic push collar in place with one hand and rotate handle slightly with the other hand until black pin engages at either end of handle “T” slot. Rotate handle clockwise to raise camper or counter clockwise to lower camper. Follow instructions in TO LIFT OR LOWER TRUCK CAMPER section.

WARNING

PERSONAL INJURY & PRODUCT DAMAGE

•Always maintain positive pressure on handle until the release bar is completely back into place, engaging the drive pin.

•Do not use quick-to-ground feature with handle in place. Handle will spin and can cause property and bodily injury.

To remove handle, hold plastic push collar in place with one hand and back handle off with the other hand until the pin is engaged in the middle of handle “T” slot. Release bar should audibly and visually spring back into position. To do so the handle must be in the vertical position (FIG 17).

NOTE: If jack is supporting camper, it may be necessary to rotate handle clockwise slightly to relieve load on Release Bar before Release Bar can be disengaged.

Manual Ball Screw Jacks have a quick-to-ground feature. To drop jack foot quickly to ground: push in both sides of Release Bar, then step down on jack foot to drop it to the ground.

NOTE: Quick-to-ground feature may not work freely until jack has been used several times because of close tolerances built into jack.

ELECTRIC JACKS

CAUTION

PRODUCT DAMAGE

•Do not over-extend or over-retract jacks. The electric jack has an internal slip clutch to help prevent damage; when clicking sound is heard, release switch. Continuing to hold the switch will wear out the slip clutch or cause damage to the motor.

•If the motor will not extend/retract the jack and the motor is making a ratcheting sound (clutch slipping), do not use the manual override. Immediately contact an Atwood Service Center and have jack replaced. Do not use the jack until replaced.

•If grinding operation should occur or any indications of improper or inadequate performance, have a trained service professdional inspect the jack set.

Electric Ball Screw Jack WITHOUT REMOTE CONTROL — FIG 6 & 7

Press switches on driver side jacks to raise and lower camper. Press top of switch to retract jack (RET) or bottom of switch to extend jack (EXT). You may need to first turn on power to jacks using switch inside your camper. Follow instructions in TO LIFT OR LOWER TRUCK CAMPER section.

Manual Override Operation: To manually extend or retract jack, place manual override handle (FIG 8-A) into alignment tube (FIG 8-B) and engage drive pin. Rotate handle counter-clockwise to raise or clockwise to lower camper.

Electric Ball Screw Jack WITH REMOTE CONTROL — FIG 7

Remove the hand held remote control from its secure compartment. Push activation switch to energize for wireless remote. Operator and all spectators must stand a safe distance from the camper.

To LIFT Truck Camper WITH REMOTE CONTROL

	EXTEND FRONT		Disconnect the front and rear tiedowns.
	JACKS FIRST		Extend front jacks so camper is 4˝ higher in
	Press and hold		front than in the rear. (see FIG 12).
	Extends single jack.
	EXTEND ALL JACKS		Once the camper front is higher than the rear,
			press and hold the ALL JACKS BUTTON, extend
			( ). Release when the camper is at the
			desired height.
	INDIVIDUAL JACK		Use the individual jack buttons to adjust an
	ADJUSTMENT		individual jack. Press and hold the extend or
	Press and hold		release buttons for the individual jacks as
			needed to keep the front of the camper 4˝
	Extends single jack.
	Retracts single jack.		higher than the rear, to prevent tipping over
	Press and hold.
			the camper. Keep all corners within 4˝ of
			level with each other.
	To LOWER truck camper WITH REMOTE
	RETRACT REAR JACKS		Retract rear jacks so camper is 4˝ lower in
	FIRST		rear than in the front. (see FIG 13).
	Press and hold.
	Retracts single jack.
	RETRACT ALL JACKS		Once the camper has the rear lower than the
			front, press and hold the ALL JACKS BUTTON,
			retract ( ). Release when the camper is at
			the desired height.
	INDIVIDUAL JACK		Use the individual jacks buttons to adjust an
	ADJUSTMENT	Press and hold	individual jack. Keep all corners within 4˝ of
		Extends single jack.
		Press and hold.	level with each other.
		Retracts single jack.

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