J&M 1484 Running Gear - Manual (Page 7)

7
750-16 OWNER’S MANUAL
SET-UP INSTRUCTIONS FOR RUNNING GEAR
IMPORTANT: Set-up work to be performed by qualified servicemen only.
Mount tires on the wheels and inflate per the tire manufacturer’s recommendations and instructions.
IMPORTANT: Use short valve stem (HAL TECH #6008BS or JD Planter Stems) when using 22.5x13.5
wheels with disc brakes (valve stems are to the inside of the wheel). Standard valve stems will not
clear the brake caliper and support.
Mount the wheels to the hubs and tighten the tapered hub nuts to either 100 ft. lb torque or the flat
hub nuts to 135 Torque (see pg 8). Check the hub nuts after the first hour of operation, then every 10
hours of operation for the first 40 hours of use. These nuts must be kept tight at all times. Wheels
that are improperly installed on the running gear, resulting in product failure, will nullify the warranty
and shift the burden of liability to the owner/operator of the equipment.
Slide the coupling pole into the front and back assemblies, slipping the collar in the back assembly.
When mounting to a 440SD gravity box, spacing of the coupling pole (approximate distance between
holes on the coupling pole) should be 44”. Distance from center of axle to center of axle is
approximately 124”. If mounting to a 385SD gravity box, spacing of the coupling pole (approximate
distance between holes on the coupling pole) should be 24”. Distance from center of axle to center
of axle is approximately 104”
Attach either the rocking bolster or the standards (box attachment brackets) to the running gear.
Fasten the tongue to the front assembly using the tongue bolt (remove paint from the bolt before
attaching) and jam nut. Attach the tongue spring to the bracket on the tongue and hitch assembly.
For running gears without hydraulic brakes, check underneath the tongue and make sure that the
safety catch (7/8” x 2 1/4” bolt w/spacer) is secure.
Mounting Brake Lines to Running Gear with Hydraulic Disc Brakes. IMPORTANT: Running Gears
with Hydraulic Disc Brakes should be set up immediately after delivery from factory to prevent dirt
and moisture from entering brake system. Attach the brake lines and hoses per drawing for Optional
Hydraulic Disc Brake System. Be careful not to over tighten the fittings and strip the threads.
Always use DOT 5 Silicone Brake Fluid or equivalent. On Optional Disc Brake Systems, be sure
to remove paint from disc brake rotors before bleeding brake lines. Failure to remove paint
will cause brakes to not work properly. If running gear is stored for an extended period of
time, the brake discs will need to be cleaned with steel wool (be sure the brake pads are
not rusted fast to the brake disc). Also, check Caliper Retainer Area for free movement.
Free retainer and caliper from any seized paint or dirt by tapping retainer and spring with
rubber or wood mallet.
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2)
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SAFETY SIGNS
ATTENTION! BECOME ALERT! YOUR SAFETY IS INVOLVED!
Replace Immediately If Damaged or Missing!
IMPORTANT: Install new safety signs if the old signs are
destroyed, lost, painted over or cannot be read. When
parts are replaced that have safety signs, make sure you
install a new sign with each new part. New signs are
available from the manufacturer or your authorized dealer. Ref. # Description Part # Req’d
1 Sign, Caution DC-111 1
2 Sign, Fluid (Brakes) DC-113 1
3* Sign, Brakes Deactivated DC-122 1
4* Sign, Brakes Activated DI-123 1
DC-122
DI-123
* Decals DC-122 and DI-123
are located on the Brake Lock-
Out Latch (#21) used on Disc
Brake Systems Only.
DC-111 DC-113