NOOK ActionJac 1-MSJ Installation and operating instructions

MACHINE SCREW JACKS
INSTALLATION, MAINTENANCE, &
LUBRICATION INSTRUCTIONS
TABLE OF CONTENTS
General instructions .................................... 2
Ordering Spare/Repair Parts ........................ 2
General Specifications ................................. 3
Lubrication................................................... 3
Installation Instructions................................ 4
Tips for Disassembly & Reassembly ........... 5
Disassembly Instructions ......................... 5-8
Exploded View of Jack Units..................... 6-7
Reassembly .............................................. 8-9
Troubleshooting ...................................... 9-10
Anti-Backlash Adjustment.......................... 11
THIS ACTIONJAC™ MACHINE SCREW JACK
WAS PROUDLY MADE IN THE USA BYTHE
EMPLOYEES OF NOOK INDUSTRIES, INC.

2 3
CAUTION - The customer is responsible
for providing stops at either end of travel.
Machine Screw Jacks are usually self-lock-
ing. However, self-lowering or creep could
result from vibratory conditions. In these
cases, a brake should be considered.
Overtravel could cause the lifting screw to
become disengaged from the drive sleeve.
GENERAL INSTRUCTIONS
Your Machine Screw Jack is a high quality,
sturdy unit designed to give many hours
of trouble-free service. However, certain
precautions and procedures must be ob-
served in handling, installing and servicing
the unit in order to obtain optimum perfor-
mance.
1. Any apparent or suspected dam-
age to equipment manufactured or
furnished by Nook Industries during
transport from the factory to the user
should be immediately reported to
both Nook Industries and the carrier.
2. Upon delivery all equipment fur-
nished should be carefully invento-
ried against shipping papers to de-
termine whether any shortages exist
in delivered material. Any such short-
ages must immediately be reported
to Nook Industries and the carrier.
3. The installation of most power trans-
mission equipment does not normally
require the services of a factory engi-
neer. These services are not included
in the selling price of the equipment
unless specifically agreed upon in
writing between the seller and pur-
chaser. In applications requiring a
more complex arrangement of com-
ponents, consideration should be
given to the use of a factory engineer
for construction super-vision or check-
out of the installation. These services
are available from Nook Industries by
contacting the Service Department.
4. The Seller’s warranty applies insofar
as the unit is operated within the rat-
ing and service conditions for which
it was specifically sold. The purchaser
must prevent the existence of any
destructive external conditions which
might typically include vibratory loads
due to critical speeds, severe shock
loading, mechanical or thermal over-
loads, or side loads.
5. Adequate installation, maintenance
and safety instructions must be given
by the user to personnel directly re-
sponsible for the installation and op-
eration of the equipment.
6. In the event of malfunction within the
warranty period, the manufacturer
must be informed promptly or, in any
event, within thirty days if it is intend-
ed that the warranty is to covert the
incident.
CAUTION - UNITS ARE NOT MEANT FOR
PERSONNEL SUPPORT. Refer all applica-
tions for potential personnel support to the
factory for approval.
ORDERING SPARE/REPAIR PARTS
This booklet contains general instructions,
operating, maintenance and troubleshoot-
ing instructions for your ActionJac™ Worm
Gear Jack. In the event spare or repair
parts are required, call your local represen-
tative or contact Nook Industries at (216)
271-7900 or 1(800) 321-7800.
Please provide the following information
when requesting spare/repair parts:
• Jack Size &Type Designation (i.e., 2 MSJ)
• Serial Number & Year of Manufacture (lo-
cated on housing nameplate)
• Stroke Length
• Part Description (see pages 6-7)
GENERAL SPECIFICATIONS
The worm gear driven Machine Screw
Jack incorporates an alloy steel worm
which drives a high tensile bronze worm
gear, accurately machined to the high stan-
dards of Nook Industries for maximum
load carrying capacity and uniformity of
motion transmission. All shafts are mount-
ed on heavy duty, anti-friction bearings to
increase operating efficiency of the drive
mechanism. Thrust bearings are provided
to support the rated thrust load of each
unit. Housings are made of high strength
material, well proportioned to handle the
rated thrust and torque loads of each size
unit.
CAUTION - In the absence of internal or
external stops, it is possible to run the lift-
ing screw out of the unit. Your Machine
Screw Jack is NOT equipped with internal
stops unless specifically requested in your
order.
A lifting screw cover is threaded into the
bottom of the unit on the upright model,
or in the top of the unit on the inverted
model, in order to keep the lifting screw
threads free of foreign material.
Depending upon which jack model is pur-
chased, the lifting screw is made of 4140
heat treated steel, 304 or 316 stainless
steel, or a special alloy. The threads of
the lifting screw for all models should be
well lubricated and kept free of grit, dirt, or
other abrasive contaminants. Fabric type
protective boots, or spiral steel protectors,
can be provided as an accessory to protect
the exposed portion of the lifting screw. In
the absence of positive stops, over-travel
may crush protective boots.
CAUTION - Standard units should not be
operated at input speeds over 1,800 RPM
without consulting the factory. Machine
Screw Jacks are designed for a maximum
of two hours intermittent operation per
day. For values higher than two hours per
day, for any continuous operation, or for
repeated operation over any segment of
total travel, consult factory.
LUBRICATION
The jack gearboxes are partially filled with
a lubricant at the factory unless otherwise
specified. Before operating any unit, verify
lubricant presence. All jack housings are
furnished with a grease fitting(s) and/or
pipe plug(s).
Lubricant inspection is recommended at
regular intervals. Once every six months
is satisfactory under normal operating
conditions, unless experience indicates
that regreasing should occur at shorter or
longer intervals. Severe operating condi-
tions such as high duty cycles, high am-
bient temperatures, or contamination will
shorten the lubrication inspection interval.
Lubricate internal jack components utiliz-
ing the grease fitting(s)/Port(s). When ap-
plying grease to the gearbox housing, suf-
ficient grease pressure is required in order
to properly apply grease to the bearing(s)
and worm gear. When applied at the facto-
ry, lubricant is typically applied at 5,000psi.
When utilizing an off-the-shelf, general-
purpose grease gun or auto lubrication
system, care must be taken to ensure
proper amount of lubricant is dispensed.
Only a small amount of lubricant would be
required. The below table is the amount
of lubricant applied at the factory. When
adding lubricant to the jack housing do
not exceed the amount specified. See jack
nameplate for specific lubricant installed in
the gearbox, or consult factory.
The lubricant must not contain any grit or
dirt, abrasives or fillers. It should not pre-
cipitate sediment, nor separate at temper-
atures up to 280°F. The lubricant must also
have resistance to oxidation and must be
non-channeling. For operating conditions
outside these limits, consult factory.

4 5
Amount supplied at factory as follows:
Jack capacity Lube [oz.]
MJ 0.8
1 Ton 1. 6
2 Ton 4
2 1/2 Ton 4.5
5 Ton 11
10 Ton 14
15 Ton 15
20 Ton 24
30 Ton 48
35 Ton 48
50 Ton 92
75 Ton 144
100 Ton 256
All units are suitable for intermittent opera-
tion providing that the housing tempera-
ture including ambient is not lower than
-20°F or higher than +200°F. Factory sup-
plied grease in standard units will operate
in this range. Consult factory for available
low-temperature greases when operating
below -20°F.
Lifting screws should be checked periodi-
cally to insure they are adequately lubricat-
ed. This is especially necessary in rotating
units where no lubrication is deposited on
the lifting screw through the jack housing.
CAUTION - The user is responsible to in-
sure lubricant compatibility. If improper
lubricant is used or insufficient lubrication
maintained, this will lead to degraded per-
formance and failure.
INSTALLATION INSTRUCTIONS
1. Be certain that the rating of the jack
exceeds the maximum load that may
be imposed upon it.
2. The foundation for the unit must
be rigid enough to maintain correct
alignment with connected machinery
Torque values for bolting are as follows:
Bolt Size
(in)
Approx.Torque Value
(ft-lb)
1⁄4
6
3⁄8
20
1⁄2
50
5⁄8
100
3⁄4
165
7⁄8
265
1 400
1
1⁄4
830
1
1⁄2
1350
1
3⁄4
2500
2 3650
IMPORTANT -Take up evenly on mounting
bolts to avoid damaging the housing.
9. If operating at the upper limits of the
unit rating, DO NOT STOP the down-
ward travel of the unit by running the
lifting screw attachments or the load
against the housing without check-
ing with Nook Industries, as serious
damage to the internal mechanism
may result. The customer is respon-
sible for providing mechanical stops
and switches for control of the prime
mover. Noneare included unless spe-
cifically quoted by and ordered from
Nook Industries.
CAUTION - If limit switches are furnished
by Nook Industries, they are NOT factory
set. Limit switches should be set by care-
fully moving to the set position by hand or
jogging. Care must be taken to avoid run-
ning lifting screws out of units or crushing
boots.
TIPS FOR DISASSEMBLY
AND REASSEMBLY
CAUTION - Disassembly of the actuator
will void the warranty.
Never perform any work on the jack or as-
and have ample strength to carry the
maximum load.
3. The foundation should have a flat
mounting surface to uniformly sup-
port the jack unit. The opening for the
lifting screw cover (or lifting screw)
that passes through base must be as
small as possible to provide jack sup-
port over the largest possible area.
4. It is extremely important that the jack
be installed so that the lifting screw
is exactly plumb and that all connect-
ing shafting is aligned with the worm
shaft.
5. After precise alignment, each mem-
ber must be securely bolted and if
possible, doweled in place. Doweling
will assure exact repositioning if ever
removed. It is essential that a jack
unit be securely bolted down to its
foundation using bolts of the proper
diameter to fit mounting holes. Bolts
should be S.A.E. Grade 5 or equiva-
lent.
CAUTION - In the case of rotating units it
is essential, for proper alignment and pre-
vention of screw failure, that the load be
attached to the traveling nut only when the
load is in the position of travel closest to
the jack housing
6. After the Jacks, mitre boxes, cou-
plings, etc. are installed and aligned,
there should be no signs of binding or
misalignment.
7. Shaft coupling guards are the respon-
sibility of the customer and are not
provided unless specifically quoted
to and ordered by the customer.
8. Caution must be taken when operat-
ing jack at either extreme of travel. If
possible, hard external stops should
be provided.
sociated transmission equipment (mitre
boxes, couplings, etc.), until absolutely
certain that the prime mover cannot be re-
motely or automatically started. Also make
certain that load cannot affect personnel or
machinery when the Jac, brake, or other
holding devices are removed. Be sure dis-
assembly area is relatively clean to prevent
contamination of parts. Store all machined
parts on wooden blocks or skids to prevent
damage to machined surfaces.
Before starting disassembly, carefully re-
view a typical parts list or certified assem-
bly drawing of the unit.
When removing end caps, be sure to tape
shaft extension keyways and other sharp
edges to avoid damaging oil seals.
NOTES:
1. Be sure to clean and dry all parts be-
fore rebuilding.
2. It is advisable to replace old seals
when the unit is rebuilt.
3. Remove any protective coatings on
replacement parts before installing.
DISASSEMBLY INSTRUCTIONS
1 MSJ through 100 MSJ Models Only
Refer to typical parts, pages 6-7. No MJ
models are serviceable in the field. These
instructions are necessarily general, and
as such, cannot provide for minor details
of construction, which may vary from unit
to unit. For specific questions, consult fac-
tory giving order number and serial num-
ber from unit name plate.
Upright or Inverted Units
Disassembly
1. Unscrew lifting screw cover assem-
bly from unit.
2. Remove protective boot and end at-
tachment from lifting screw, if appli-
cable.

6 7
ACTIONJAC™MACHINE SCREW JACK
ALL MODELS 1-MSJ THROUGH 100-MSJ*
EXPLODED VIEW OF A TYPICAL ASSEMBLY
Views are illustrative only. See page 2 for ordering spare/repair parts.
* Models MJ-20 through MJ-200 should not be disassembled. These units arer not serviceable in the field.
KEYED SCREW
DESIGN
ROTATING SCREW
DESIGN
TRANSLATING SCREW
DESIGN
(UPRIGHT ASSEMBLY)
TRANSLATING SCREW DESIGN
(UPRIGHT ASSEMBLY)
Hex Soc. Set Screw
Hex Soc. Set Screw
Clevis End
Hex Soc. Set Screw End Cap
Key (special)
Hex Soc. Set Screw
Cover
Hex Soc. Set Screw
Top Plate End
Lifting Screw Lifting Screws
Thrust Bearing
Seal Ring (Rotating Design Only) Drive Sleeve & Gear
Thrust Bearing
Cover
Travel Nut
Shim
Lifting Screw Cover
Roller Bearing
Roller Bearing
Oil Seal
Shim
End Cap
Worm Shaft
Lifting Screw
Cover Housing Plug
(Rotating Design Only)
Sealed Bearing
(1 MSJ Only)
Housing Col. Bushing
Lifting Screw
Hex Soc. Set
Screw
Hex Soc. Set Screw Grease Fitting Housing
Cap
(1 MSJ Only)

8 9
3. Unscrew lifting screw from drive
sleeve.
4. Remove socket head set screws in
housing.
5. Unscrew housing cover.
6. Remove end caps on worm shaft as-
sembly.
CAUTION - Handle shims carefully to
avoid damage.
While tapping one end of the worm shaft
with a wooden mallet, turn the worm
shaft. This will loosen the bearing cup to
facilitate removal. (2 MSJ - 100 MSJ only)
7. Remove the worm shaft bearing
cups. (2 MSJ - 100 MSJ only)
8. Drive sleeve and gear assembly
should now lift easily from housing.
9. Worm shaft assembly can be re-
moved if necessary.
NOTES:
1. Bearing cones are press-fitted to worm
shaft. If removal is required use bearing
puller.
2. Removal of the bearings from the drive
sleeves of Jacks equipped with Taper
Roller bearings, may result in their being
damaged.
Rotating Units Disassembly
1. Remove set screws from housing.
2. Unscrew housing cover.
3. Remove end caps on worm shaft as-
sembly.
CAUTION - Handle shims carefully to
avoid damage.
4. While tapping one end of the worm
shaft with a wooden mallet, turn the
8. Drive sleeve and gear assembly
should now lift easily from the hous-
ing.
9. Thrust bearing assembly can be re-
moved if required. (see note 2)
10. Worm shaft assembly can be re-
moved if necessary.
NOTES:
1. Bearing cones are press-fitted to
worm shaft. If removal is required us-
ing bearing puller.
2. Removal of the bearings from the
drive sleeves of Jacks equipped with
worm shaft. This will loosen the bear-
ing cup to facilitate removal.
5. Remove the worm shaft bearing
cups.
6. Drive sleeve and gear assembly can
now be lifted easily from the housing.
7. Thrust bearing assembly can be re-
moved if required. (see note 2)
8. Worm shaft assembly can be re-
moved if necessary.
NOTES:
1. Bearing cones are press-fitted to
worm shaft. If removal is required
use bearing puller.
2. Removal of the bearings from the
drive sleeves of Jacks equipped with
Tapered Roller bearings, may result in
their being damaged.
Keyed Units Disassembly
1. Remove key retaining bolt.
2. By turning worm shaft, drive lifting
screw and key from housing and re-
move key.
3. Remove set screws from housing
and cover.
4. Unscrew housing cover.
5. Remove end caps on worm shaft as-
sembly.
CAUTION - Handle shims carefully to
avoid damage.
6. While tapping one end of the worm
shaft with a wooden mallet, turn the
worm shaft. This will loosen the bear-
ing cup to facilitate removal.
7. Remove the worm shaft bearing
cups.
Tapered Roller bearings, may result in
their being damaged.
REASSEMBLY
Your jack can be easily reassembled by
reversing the procedure as previously
outlined. In reversing disassembly proce-
dures, be sure to pack worm, worm gear,
and all bearings with grease. Also coat all
seal areas with grease. After unit is reas-
sembled, fill with grease, see page 3.
Reassembly may required that one worm
shaft ball bearing be pressed onto worm
shaft after drive sleeve and worm are as-
sembled in the housing.
TROUBLE SHOOTING TIPS
Your ActionJac™ Machine Screw Jack will perform satisfactorily if suggestions described
in this booklet are carefully followed. It is estimated that approximately 98 percent of
Machine Screw Jack failures can be attributed to improper lubrication, misapplication,
and misalignment.
TROUBLESHOOTING CHART
TROUBLE WHAT TO INSPECT ACTION
Worm Shaft Failure 1. Type of Coupling Rigid Couplings can cause
shaft failure. Replace with
coupling will provide adequate
flexibility and lateral float.
2. Coupling Alignment Realign as required.
3. Presence of Excessive
Overhung Load
Check jack for allowable loads.
4. Unit Overload See Housing Failure No.1.
5. Shock Loading Apply coupling capable of ab-
sorbing shock and, if neces-
sary, replace with unit of suf-
ficient capacity. Shock loads
can significantly increase ap-
parent dead weight loads.
6. "Ganging" Units If several units are "in-line", the
worm shaft of the first unit
can assume 300% of the rat-
ed input torque. If this value is
exceeded, you must replace
with a larger unit.

10 11
TROUBLESHOOTING CHART (continued)
TROUBLE WHAT TO INSPECT ACTION
Housing Failure 1. Unit Overload Reduce load or replace with
unit of sufficient capacity.
2. Improper Support Unit should be supported over
entire base area, not just at bolt
hole locations.
3. Uneven Bolting Torque Take up evenly on mounting
bolts.
Bearing Failure 1. Unit Overload See housing failure No.1
2. Excessive Overhung
Load
See worm shaft failure No. 3
3. Coupling Alignment See worm shaft failure No. 2
4. Coupling Lateral
Alignment
Adjust spacing between con-
necting shafts to relieve end
pressure.
5. Bearing Adjustment Bearings must not be pinched.
Adjustable tapered bearings
must be set at proper lateral
clearance. All shafts should turn
freely when disconnected from
the load.
6. Bearing Lubrication Add lubricant if necessary
7. Shock Loading See worm shaft failure No. 5
Drive Sleeve &
Worm Gear Wear
1. Unit overload See housing failure No.1
2. Bearing Adjustment See bearing Failure No. 6.
3. Lubrication Proper levels and grade must
be maintained. See lubrication
page.
Drive Sleeve &
Worm Gear Nut
Wear
1. Unit Overload See housing failure No. 1
2. Alignment Lifting shafts must be perfectly
plumb.
3. Lubrication See Gear Wear No.3
4. Side Load Eliminate side load
Lifting Screw Failure 1. Unit Overload See housing failure No. 1.
2. Alignment See lifting shaft failure No. 2.
3. Side Load Check with Nook Industries
Engineering Department for al-
lowable size load.
ANTI-BACKLASH ADJUSTMENT
The anti-backlash feature is set at the factory and normally does not require further
adjustment. However, as wear develops with extended use, it may become necessary
to adjust lash.
ADJUSTMENT PROCEDURE
1. Loosen Locknut (Item a)
2. Loosen Set Screw(s) (Item c)
3. To reduce backlash, rotate Adjusting Cap (Item a) clockwise until resistance is felt.
(Do not over tighten)
4. Place a reference mark between thread on Adjusting Cap and Housing.
5. Rotate Adjusting Cap (Item A) counter clockwise an amount equal to the A dimen-
sion on the o.d. of the threads. (See chart)
6. Tighten Set Screws.
7. Holding Adjusting Cap (Item a) stationary, tighten Locknut (Item b).
8. Operate jack through entire stroke, checking for tight spots. Note: If jack has been
used only over a portion of its stroke, backlash should be adjusted in the least
worn portion of the screw.
CAUTION - Care should be taken not to overtighten the anti-backlash system in order
to prevent binding or lockup between the drive nut and lifting screw. Overtightening can
cause a destructive heat buildup or failure.
a b c
A
Item Description
a Adjusting Cap
b Locknut
c Set Screw
Jack Model A
1, 2, 2.5-MSJ
7⁄32
5, 10-MSJ 5⁄16
15, 20, 30-MSJ 3⁄8
35-MSJ 1⁄2
50-MSJ 11⁄16
75-MSJ 13⁄16
100-MSJ 1

STATEMENT OF ASSURANCE
Thank you for purchasing another quality product from Nook Industries, Inc.
Every effort has been taken to assure this product was manufactured to the
highest industry standards of quality, precision, and performance.
GUARANTEE
Unless otherwise stated herein, Seller will repair or replace, without charge,
f.o.b. point of shipment, any parts proven to Seller’s satisfaction and upon
Seller’s examination to have been defective in material or workmanship when
furnished to the original purchaser, provided claim is made within five (5)
years after date of shipment of
1
⁄ 4 ton to 20 ton jacks or within one (1) year
after date of shipment for jacks 30 tons and larger. Deterioration or wear oc-
casioned by abuse, severe eccentric loading, overloading, chemical or abra-
sive action, or excessive heat shall not constitute defects. Equipment and
accessories not of the Seller’s manufacture are warranted only to the extent
that they are warranted by the manufacturers, and this warranty is applicable
only if the defect was the result of normal use, application, and service, and is
void if the product or any part hereof was tampered with, repaired, or altered
by any person other than the factory or authorized repair station. THERE ARE
NO OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING THAT OF
MERCHANTABILITY AND OF FITNESS FOR A PARTICULAR USE.
Under no circumstances shall Seller be liable for any loss of profit or for spe-
cial, consequential, or exemplary damages over and apart from the repair or
replacement of Seller’s part.
This warranty and any controversy or claim arising out of this warranty or
its interpretation, or any breach thereof, which cannot be amicably resolved
between Seller and the original purchaser with sixty (60) days of written no-
tice by the aggrieved party to the other, shall be finally settled by binding
arbitration submitted to the three (3) arbitrators selected from the panels of
the arbitrators of the American Arbitrator’s Association in accordance with
the rules and regulations of the American Arbitrator’s Association sitting in
Cleveland, Ohio, with each party to pay its own cost.
Authorization for return must be received from Nook Industries before return-
ing any equipment for inspection or warranty repair.
WARNING
The equipment shown in this bulletin is intended for industrial use only and
should not be used to lift, support, or otherwise transport human cargo, un-
less you have a written statement from Nook Industries, Inc. that the Jack
unit as used in your application is suitable for human cargo.
4950 East 49th Street / Cleveland, OH 44125
216.271.7900 - 800.321.7800 - fax: [phone]
www.nookindustries.com P-520-9
Rev. 4.0