Atwood Mobile Products MPD 87850 User Manual
LITERATURE NUMBER MPD 87850
BOLT SWIVEL
RETAINING RING SWIVEL
9
TUBULAR SWIVEL
JACKS
ENGLISH, FRANCAIS (et Canada) •Installation •Operation •Maintenance
Effective 12/10/07
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.
INSTALLATION
WARNING
JACK MAY FALL CAUSING INJURY
• Use ONLY Atwood mounting bracket and provided retaining ring with
Atwood Retaining Ring Swivel Jacks.
• Atwood mounting bracket is designed to ensure proper engagement of
the locking pin during use.
• Atwood mounting bracket and retaining ring is designed as a system
with Atwood jacks to ensure proper snap ring engagement, retention
and lock pin function.
CAUTION
HANDLE MAY INJURE OR DAMAGE PROPERTY
• BEFORE INSTALLATION, jack handle must clear all obstructions when in use.
• Install jacks in accordance with provided instructions.
CAUTION
• Adequate ventilation must be provided when welding.
WELDING INSTRUCTION
PREPARE THE METAL
Metal must be completely clean and free from rust or paint before welding. It is
difficult to arc against a dirty surface, but any contaminants will find their way
into the weld and reduce its strength. Light use of an angle grinder or flap
wheel will quickly remove surface rust and paint. For more inaccessible areas
an air grinder or dremmel can b e effective.
• 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% CO2.
• STICK WELDING - Use E6011 A.W.S. welding rod or equivalent with a
diameter as follows: 1/8” electrode set power between 115-130 Amps
DC or 5/32” electrode set power between 140-160 Amps DC.
HAZARDOUS FUMES
RETAINING RING SWIVEL JACKS
Instructions are for single lock pin swivel jacks.
CHOOSE THE CORRECT MOUNTING BRACKET - SEE ILLUSTRATIONS
SINGLE LOCK PIN JACK - USE MOUNTING BRACKET: (FIG 2)
Bracket Mounting:
Install Atwood mounting bracket as shown (FIG 1).
Jack Mounting:
To Disassemble:
• type of jack
• size of trailer frame
• type of jack installation
87501 87502 P/N’s used only for Series 8---- Atwood Jacks
MPD 87501 - Weld on bracket, fits most frames
MPD 87502 - Bolt on bracket, fits frames 2˝ or 3˝ wide and 3˝ , 4˝ or 5˝ deep
1. WELD-ON BRACKET
a. Following
welding along both sides of bracket from top to bottom.
2. BOLT-ON BRACKET around frame
a. Locate mounting plate against frame.
b. Put furnished bolts through holes that are above and below frame.
c. Assemble backing plates to bolts.
d. Put on lock washer, then nuts.
e. Torque nuts to 25-30 ft. lbs.
WELDING INSTRUCTIONS,weld bracket to side of frame by
WARNING
JACK MAY FALL CAUSING INJURY
• Retaining Ring must be installed in accordance with provided instruc-
tions.
• Do not over expand the retaining ring.
1. Place jack on bracket (FIG 1).
2. Attach the retaining ring (FIG 2-A & B) to the bracket.
a. Use Truarc®External Ring Pliers No. 0609 or equivalent snap
ring pliers to expand the retaining ring just enough to slide it
over the groove in the bracket.
b. When the retaining ring is directly over the groove, release the
pliers and allow the ring to retract completely into the groove as
shown in
c. Obtain Truarc
Needed only for Series 8---- Atwood Jacks
Truarc®Company LLC Telephone: (800)526-7055
70 East Willow St. website: www.truarc.com
Millburn, NJ 07041 USA
3. Inspect the ring.
a. Ring must be completely in the groove and a firm fit
b. To test for proper installation, attempt to rotate the ring. It
should require force to cause it to rotate in the groove. It should
not spin freely. Outer diameter of ring installed in groove should
be 2.724˝ diameter maximum (
1. Remove retaining ring using Truarc®External Ring Pliers No. 0609 or
equivalent snap ring pliers (see Jack Mounting).
2. Use caution when removing the jack.
3. Use new retaining ring when reinstalling the jack on the bracket.
FIG 3.
®
External Ring Pliers No. 0609 from:
FIG 3).
FIG 3.
1
TUBULAR SWIVEL JACKS
CAPACITY
USE ONLY ATWOOD MOUNTING TUBES WITH ATWOOD TUBULAR SWIVEL JACKS
Bracket Mounting:
1. Assemble jack with tube (4A) and pin (4B) installed. Use this as a
templet prior to welding
2. Tack a weld at two spots at 1800apart at the point where the
mounting tube (4A) and the frame contact each other.
3. Separate jack from mounting tube (4A).
4. Weld completely around mounting tube (4A).
Jack Mounting:
1. Fit jack bracket over mounting tube (FIG 4-A).
2. Slide lock pin (FIG 4-B) through jack and mounting tube holes.
3. Lock in place with hairpin cotter (
To Disassemble:
1. Remove hairpin cotter and lock pin.
2. Lift jack from bracket, use caution when removing the jack.
FIG 4-C) through end of lock pin.
BOLT SWIVEL JACKS
Bolt around frame bracket:
1. Position jack on trailer tongue where jack can be freely swiveled.
2. Put bolts through bracket holes that are above and below frame.
3. Assemble furnished backing plates/lock washers/nuts on bolts (
FIG 5).
4. Torque nuts to 20-25 ft. lbs.
Weld on frame bracket:
1. Position bracket with tabs located against bottom of tongue in a
location where jack can be freely swiveled (
2. Following
WELDING INSTRUCTIONS, attach bracket along top and bottom
with 1-1/2˝ minimum weld bead. Weld entire length of vertical
FIG 5. Tabs on bottom of bracket locate bracket squarely
edges
with bottom of frame.
3. Using provided socket head screws, attach jack to welded bracket
with open side of bracket toward the ground. Torque screws to 2025 ft. lbs. Make sure screw heads do not protrude above surface
of bracket.
FIG 5).
OPERATION
WARNING
JACK MAY FALL IF NOT PROPERLY ENGAGED
• SINGLE LOCK PIN STYLE - Locking pin end must be inserted fully into
bracket pin hole. Lock Pin shoulder must contact bracket tab before
use. Do not raise or lower tongue if the handle is not correctly locked.
• Dirt, sand, ice, etc., must not obstruct the proper seating of lock pin.
• Visually check that locking pin end(s) are inserted fully into bracket
receiving hole(s).
• Never pull on lock pin(s) when any weight of the trailer is on the jack.
TEST JACK FOR LOCK PIN ENGAGEMENT ON ALL JACKS
• Try to move jack to ensure proper engagement side to side with your
hand before applying load to jack.
• Locking pin(s) end(s) must be inserted fully into bracket pin holes
FIG 6-B.
TOP WIND JACKS:
1. Pull handle up to horizontal position.
2. Turn handle clockwise to raise tongue, counter-clockwise to lower.
Prevent caster from rotating.
3. Push handle down along jack tube for storage.
SIDE WIND JACKS:
1. Turn handle clockwise to raise.
2. Turn handle counter-clockwise to lower. Prevent caster from rotating.
RETAINING RING SWIVEL JACKS:
1. Pull on locking handle with one hand FIG 6-A.
2. Swivel jack to vertical or horizontal position FIG 7 & 8.
3. Release locking handle. It must engage hole(s) on assembled bracket
FIG 6-B.
4. Put jack in horizontal position before towing FIG 7-B & 8-B.
TUBULAR SWIVEL JACKS:
1. Remove hairpin cotter and lock pin FIG 4.
2. Swivel jack 90˚ FIG 7 & 8.
3. Replace lock pin and hair cotter
4. Put jack in horizontal position before towing
5. Replace lock pin and hair cotter
FIG 4.
FIG 7.
FIG 4-B.
THE CAPACITY OF THE JACK IS
IDENTIFIED ON THE TUBE OF
THE JACK -
WARNING
PERSONAL INJURY
• Never exceed the rated capacity identified on jack.
JACK CAPACITY DEFINITION
Working Capacity =
Supporting Capacity =
Maximum Load
Maximum V
CAUTION
jack can support for castering and
easy lifting of a fully loaded trailer.
ertical Load
that the jack can support.
PERSONAL INJURY / PRODUCT DAMAGE
• Body and feet must be clear of trailer tongue when raising or lower-
ing jack.
• ALWAYS FULLY RETRACT & SWIVEL JACK TO HORIZONTAL POSITION before towing trailer.
DO NOT use blocks for additional ground clearance, trailer can tip and fall.
•
• Caster is intended to allow maneuvering of trailer for short distances on
smooth hard surfaces. Do not force caster over rough surfaces or obstacles.
• Lower jack to minimum height before moving trailer on caster.
• Do not use tow vehicle to move trailer with jack in vertical position.
• Replace jack if worn, damaged or not operating freely.
• When lowering jack, always provide footing (caster wheel or a jack
foot) beneath jack preventing dirt from entering center of ram.
BOLT SWIVEL JACKS
1. Pull on lock pin FIG 9.
2. Swivel jack to horizontal or vertical position
3. Release lock pin. Pin must fully engage bracket attached to trailer
tongue FIG 6-B.
4. When raising or lowering jack prevent caster from rotating while
cranking jack.
5. Put jack in horizontal position before towing
FIG 7 & 8.
FIG 7-B & 8-B.
MAINTENANCE
1. Lubricate jack at least every six months in the following manner.
a. Extend jack as far as possible.
b. Lubricate entire length of outside inner ram with SAE 30 heavy oil.
c. Squirt oil in oil hole or grease fitting provided at top of outer ram.
d. Clean dirt, mud or tar from jack.
2. For side wind jacks, follow procedure in
and lubricate gears with wheel bearing grease.
3. Should jack become difficult to operate: remove, clean and oil.
Inspect for bent or worn parts. Use only Atwood supplied parts for
replacement. Replace all bent or worn parts.
4. If it is not possible to get jack to operate freely, replace jack.
5. Should problems or questions arise, contact your dealer, the trailer
manufacturer or Atwood Service Department, 574-264-2131.
STEP 1. Then remove cap
2
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