User guide

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
Installer: Provide these instructions to the consumer.
Consumer: Read and keep documents available for future reference.
Capacity Definition: The supporting, or support, capacity is the maxi-
mum vertical load that the jack can support.

WARNING
PERSONAL INJURY / PRODUCT DAMAGE
•
Never exceed the rated capacity stamped or labeled on jack tube.
• Jacks must be installed according to instructions provided to ensure
safe operation.
INSTALLATION

CAUTION
HANDLE MAY INJURE OR DAMAGE PROPERTY
• BEFORE INSTALLATION, JACK HANDLE MUST CLEAR ALL OBSTRUCTIONS WHEN
THEY ARE IN USE
.
• Install jacks in accordance with provided instructions.

CAUTION
HAZARDOUS FUMES
• Adequate ventilation must be provided when welding.
WELDING INSTRUCTIONS
• M.I.G. OR STICK - 5/32˝ fillet weld minimum.
• M
.I.G. WELDING
- Use A.W.S. ER 70S-3 or 6 wire or equivalent with a
diameter of .035 - .045. The recommended shielding gas mixture is
75% - 95% Argon & 25% - 5% CO
2
.
• STICK WELDING - Use E6011 A.W.S. welding rod or equivalent.
Recommended machine settings for specific electrode diamterer are
as follows: 1/8” electrode set power between 115-130 Amps DC or
5/32” electrode set power between 140-160 Amps DC.
Jack Screws
Jack screws are jacks with no mounting plates or brackets. Atwood
Mobile Products Engineering Department (574-262-2655) must authorize all
mounting (except U-Bolt Mounting) of jack screws for each application.
WELD-ON APPLICATION:
Supporting Capacity 1,000 lbs.
1. Weld jack to backing plate following
WELDING INSTRUCTIONS. Weld full
length of bracket on both sides.
Fixed Mount Jacks
Fixed mount jacks are only for use on 3˝, 4˝ or 5˝ frame or channel.
1. Install bolts through top holes in jack bracket and mounting strap,
then attach nut and lock washer
FIG 1.
2. Position jack on trailer tongue and repeat Step 1 for bolts below
trailer tongue
3. Torque to 25 ft. lbs.
A-Frame Top Mount Jacks- 1,000 - 5,000 lb. Jack Capacity

CAUTION
COUPLER OR FRAME DAMAGE
• A bottom support plate must be used with all A-Frame Top Mount
Jack Screws.
BOLT-ON APPLICATION:
1. Use 3-3/8˝ - 16 UNC Grade 5 bolts to attach A-frame jack mounting
plate to coupler
FIG 2-A or top support plate FIG 3-A. Torque to 15-
20 ft. lbs.
2. Weld top or bottom support plate to trailer frame following
WELDING
INSTRUCTIONS
. Weld completely around support plate to trailer frame FIG
2 & 3-B.
WELD-ON APPLICATION:
1. Follow
WELDING INSTRUCTIONS and completely weld around A-frame jack
mounting plate.
2. Weld top or bottom support plate to trailer frame following
WELDING
INSTRUCTIONS
. Weld completely around support plate to trailer frame.
MOBILE HOME
A-Frame Bottom Mount Jack -
6,000 - 11,000 lb. Jack Capacity
The following installation instructions vary according to the type of cou-
pler mounted on the trailer frame.
STRADDLE MOUNT COUPLER (FIG 4)
For complete Atwood Straddle Mount Coupler Installation, Operation,
and Maintenance instructions please see MPD 87985.

CAUTION
PRODUCT DAMAGE
• Straddle mount couplers are to be used only on mobile homes.
• Top and bottom support plates MUST be used with all Straddle
Mount Couplers.
• Must use 50˚ coupler with a 50˚ A-frame only.
•
Must use 60
˚ coupler with a 60˚ A-frame only.
• Larger beam reinforcements and improved attachments may be nec-
essary for adequate structural capacity.
COUPLER P/N # 83461, 84102 - 50˚ mount 32,000 lb. CAP.
COUPLER P
/N # 83551 - 60˚ mount 32,000 lb. CAP.
Top Support Plate P/N #82740 83480 (50˚), or 83670 (60˚)
Bottom Plate P/N 82672, 83400, 83470, 83511, 84150, 84151, 84160,
84161, 86081
COUPLER P/N # 84140 - 50˚ mount 40,000 lb. CAP.
COUPLER P/N # 83462 - 50˚ mount 44,000 lb. CAP.
COUPLER P/N # 84060 - 60˚ mount 40,000 lb. CAP.
COUPLER P/N # 83549 - 60˚ mount 44,000 lb. CAP.
Top Support Plate P/N #83480 (50˚), or 83670 (60˚)
Bottom Support PlateP/N
#82672, 83511, 84150, 84160, 84151, 84161
1. Align bottom support plate so that jack is as far forward as possi-
ble, but still clears the edges of the A-Frame members and the top
back of coupler. Outside edges of bottom support plate must
extend to or past web of beam.
2. Follow
WELDING INSTRUCTIONS
. Weld bottom support plate to bottom of
frame
FIG 4 -B.
3. Weld full length both sides and around the corners to inside edges
of the A-Frame beam.
ENGLISH, FRANCAIS (et Canada) •Installation •Operation •Maintenance
Effective 12/11/07
JACK SCREWS
FIXED MOUNT JACKS
A-FRAME JACKS
LITERATURE NUMBER MPD 87840
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