Atwood MPD 87083 Manuals

1 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 INSTALLATION AND OPERATION Installer: Provide these instructions to the consumer. Consumer: Keep documents for future reference. The Atwood Power Jack is a 12-volt DC motor driven screw jack intended for use on recreational type and marine trailers. Patent # D349800. Jack is used to level trailer or raise and lower coupler for hookup to tow vehicle.  CAUTION PERSONAL INJURY/PROPERTY DAMAGE • Retract jack fully before towing. • Do not use blocks to increase height of jack. • Use 3500 lb. Heavy Duty Power Jack if you use equalizer bars between the trailer and the tow vehicle. LIGHT WT STANDARD DELUXE HEAVY DUTY MARINE SHORT Max. Lifting Cap. LBS 1500 2500 2500 3500 1000 INSTALLATION 1. Block tires of trailer and securely support trailer tongue. 2. The Atwood RV Power Jack is designed to attach to the top surface of an A-frame type tongue having mounting holes typical of the Atwood A-frame couplers FIG 1. Use coupler installation instructions (MPD 87984) if installing coupler. The Marine Power Jack attaches to the side of a straight tongue trailer. 3. A lower support plate must be used for side support of the RV jack on the lower surface of the A-frame FIG 1. HOLE DIAMETERS: Light Weight 2.02˝ (MIN) 2.09˝ (MAX) Standard / Short / Deluxe / Heavy Duty 2.20˝ 2.28˝ Hole in lower support plate must align with hole in coupler. TO ORDER LOWER SUPPORT PLATE: Light Weight - Atwood MPD 80263 Standard / Short / Deluxe / Heavy Duty - Atwood MPD 80570 Using 1/8˝ fillet weld, No. E6011 AWS welding rod 1/8˝ diameter, machine amps (AC or DCRP) at 160-180 with 50 volts, weld plate full length on each side to underside of A-frame. The maximum frame height is 6 inches. 4. Place RV jack through holes in coupler and lower support plate, FIG 1-A. Attach with three (3) bolts (3/8˝ dia. x 5/8˝ long, grade 5, (provided) FIG 1-B. NOTE: Torque bolts to 15 foot lbs. minimum /20 foot lbs. max. Note: There must be metal to metal contact between jack and coupler. The three mounting bolts with attached star washers must be used. The star washers are designed to remove paint on the surface of jack flange. The bolts also should remove paint from the mounting holes in coupler. If there is a grounding problem (i.e. no power) check these two surfaces to be sure there is metal to metal contact between jack and coupler. For wiring, see WIRING ILLUSTRATIONS FIG 2 & 3. 5. Attach Marine Jack as shown. 6. Route wire lead from motor along trailer tongue to battery. Secure lead to jack housing and trailer frame using cable ties or equivalent. 7. Remove fuse from fuse holder. Connect the wire lead from the jack directly to the positive (+) terminal of the battery. Replace the fuse into the fuse holder. For auxiliary battery, connect lead to auxiliary battery positive (+) terminal so that jack may be used when connected to 115v. For additional wire, use #10 stranded copper wire or larger. 8. After reinstalling fuse, check installation by pressing switch marked “EXT” for jack extension or “RET” to retract the jack. 9. On the Short, Deluxe, Heavy Duty or Marine power jacks, check utility light by moving switch to “ON” or “OFF”.  CAUTION HAND OR FINGER INJURY • Hold foot pad near the bottom of the tube, when installing foot pad or caster. 10. Place foot pad, or caster for Marine power jack, over the end of jack, align holes, and place pin through holes. A cotter pin clip goes through the hole in the pin, preventing pin from coming out. OPERATION 1. To raise or lower jack, press switch marked “EXT” or “RET”. “Extend” and “Retract” refer to the jack, not the trailer. 2. Release switch when jack nears full retraction or full extension to prevent unnecessary wear on motor clutch. a. When jack reaches its maximum extended or retracted length or maximum load, a clicking noise will be heard. This is the overriding clutch built into the motor to prevent overload. Release switch immediately when clicking is heard. If the jack has been over extended or retracted, it may bind. If so, operate with the manual override handle, per STEP 3 below, to break it free. b. When the heavy duty power jack is being retracted, there may be some audible noise, coming from the brake area. This is normal and is due to the high load for which this jack is rated. 3. In case of electrical failure- raise or lower jack as follows: STANDARD & LIGHTWEIGHT POWER JACKS a. Remove top cover by loosening the four screws. b. Remove screws holding motor to mounting plate. c. Lift motor off jack. d. Turn hex drive nut with wrench or optional manual drive handle, part # 87891 (FIG 1-C). e. To reinstall electric motor on jack, rotate hex drive nut so the pin in the hex drive nut aligns with slot in motor drive shaft. f. Tighten hex nut to 25 inch lbs. torque. g. Reinstall motor and fasten with screws. h. Reinstall top cover and fasten with screws. SHORT, DELUXE OR MARINE JACKS Place manual override handle (FIG 1-C) into alignment tube and engage drive pin. Rotate handle clockwise to raise or counter- clockwise to lower the camper. ENGLISH, FRANCAIS (et Canada) •Installation •Operation •Maintenance Effective 11/21/07 POWER JACK RV and Marine Applications LITERATURE NUMBER MPD 87083 9