Yale Lift-Tech SHAW-BOX, Operation, Service & Parts Manual, Page: 8 / 68

Page 8
af. DO NOT lift loads over people.
ag. DO NOT leave a suspended load unattended unless
specific precautions have been taken.
ah. DO NOT allow sharp contact between two hoists or
between hoist and obstructions.
ai. DO NOT allow the rope or hook to be used as a ground
for welding.
aj. DO NOT allow the rope or hook to be touched by a
live welding electrode.
ak. DO NOT remove or obscure the warnings on the hoist.
al. DO NOT adjust or repair a hoist unless qualified to
perform hoist maintenance.
am. DO NOT attempt to lengthen the load rope or repair
damaged load rope.
an. Personnel not physically fit or properly qualified, shall
not operate hoist.
ao. Do not operate hoists unless hook moves in the same
direction as indicated on the push button. If opposite
direction occurs, see preoperation checks, Paragraph
2-4.b.
ap. Do not operate hoist unless limit switch is operating
properly.
aq. Center hoist over load before operating. Avoid side
pulls and swinging of load or load hook when
travelling hoist.
Figure 4-1. View of Hoist Showing Location of
Name Plates and Oil Plugs
Do not operate the hoist with the hoisting rope out
of the drum grooves. Such operation may result in
the rope breaking and dropping the load which can
cause damage to equipment and injury to operator
or other personnel. Hoist rope will remain in the drum
grooves during proper operation under normal
operating conditions, however, slack or kinked rope,
excessive side pulls, swinging or jerking of load, or
similar abuse, may cause the rope to leave the
grooves.
WARNING
ar. Observe recommended inspection and maintenance
procedures.
as. Use common sense and best judgement whenever
operating a hoist.
SECTION IV - LUBRICATION
4-1. GENERAL. The lubrication services outlined in Paragraphs
4-2 thru 4-6 should be performed at regular intervals to maintain
top hoist performance and insure long life. Intervals of at least
six (6) months, coinciding with spring and fall seasons, are
recommended. The reason for this is that, on hoists installed
out-of-doors and in unheated areas, a “cold test” oil is required
in cold (below freezing) climates making seasonal changes
necessary.
4-2. CHANGE GEARCASE OIL. (Figure 4-1)
a. Remove oil drain plug from bottom of gearcase and drain
out oil.
b. Flush out hoisting using kerosene. Reinstall drain plug.
c. Remove oil level plug from front of gearcase cover.
11058LB
d. Refill thru filler hole to proper level (bottom of oil level
plug hole) using Automatic Transmission Fluid DEXRON
III Type, suitable for all temperature ranges. The amount
of oil required depends upon overall size of gearcase;
two sizes are used for Series “700” hoists. To determine
size and amount of oil to add, measure width of hoist at
gearcase cover. If the width is 24-3/4 inches, add 6 quarts
of oil; and if 34-1/4 inches, add 18 quarts.
4-3. LUBRICATE HOISTING CABLE. Hoists are shipped from
the factory without an exterior coating of grease on hoisting
cable. It is recommended, where conditions permit, that the
cable be thoroughly coated at installation and kept well
lubricated with LUBRIPLATE Chain and Cable Fluid or equal.
4-4. LUBRICATE UPPER SHEAVE AND LOWER BLOCK
ASSEMBLY
a. Some hoists are equipped with roller-type upper and lower
sheave bearings and have grease fittings located in ends
of sheave pins. If hoist is so equipped, apply (*) NLGI No.
2 grease, such as Shell Oil Company’s Alvania No. 2 or
equivalent, for operating temperatures from +50°F to
+125°F For colder temperatures, (-20°F to +50°F) use
NLGI No. 1 such as Shell Oil Company’s Alvania No. 1 or
its equivalent. Hoists not equipped with grease fittings in
sheave pins have shielded ball bearings with lubricant
sealed in and do not require additional lubrication.
b. On Low Headroom Models, apply a few drops of S.A.E.
No. 50 oil to thrust bearings at trolley brackets.
(*) National Lubricating Grease Institute.
4-5. LIMIT STOP LEVER LUBRICATION. Some hoists are
equipped with a bar operated limit switch. Apply a few drops of
S.A.E. No. 50 oil to pivot points of limit rod.
4-6. LUBRICATE LIMIT SWITCH. Provide a light film of NLGI
No. 2 grease on bevel gear of limit switch.