Nexen AIR CHAMP LSCC-32 User manual
1FORM NO. L-21099-E-0904
FORMNO. L-21099-E-0904
Straight-Bore Clutch
LSCC-32, 44, 54
FORM NO. L-21099-E-0904 2
In accordance with Nexen’s established policy of constant product improvement, the specifications contained in this
manual are subject to change without notice. Technical data listed in this manual are based on the latest information
available at the time of printing and are also subject to change without notice.
Technical Support: 800-843-7445
(651) 484-5900
www.nexengroup.com
Copyright 2004 Nexen Group, Inc.
Nexen Group, Inc.
560 Oak Grove Parkway
Vadnais Heights, Minnesota 55127
ISO 9001 Certified
Read this manual carefully before installation and operation.
Follow Nexen's instructions and integrate this unit into your system with care.
This unit should be installed, operated and maintained by qualified personnel ONLY.
Improper installation can damage your system or cause injury or death.
Comply with all applicable codes.
DANGER
3FORM NO. L-21099-E-0904
Table of Contents
Installation-----------------------------------------------------------------------------------------------------------------------------4
Maintenance --------------------------------------------------------------------------------------------------------------------------4
FacingKit-------------------------------------------------------------------------------------------------------------------------4
Repair Kit -------------------------------------------------------------------------------------------------------------------------5
Troubleshooting---------------------------------------------------------------------------------------------------------------------7
Repair and Kits ----------------------------------------------------------------------------------------------------------------------8
Parts List ------------------------------------------------------------------------------------------------------------------------------8
Maximum RPM----------------------------------------------------------------------------------------------------------------------8
Warranty -------------------------------------------------------------------------------------------------------------------------------9
FORM NO. L-21099-E-0904 4
INSTALLATION
1. Secure a sheave or sprocket onto the Pilot end of
the clutch using the appropriate bolts (See Table 1).
2. Insert the customer supplied key onto the machine
shaft.
3. Slide the LSCC onto the machine shaft. (See
Figure 1.)
4. Secure the Pilot to the machine shaft using the
three Set Screws (Item 16). (See Figure 1.)
5. Attach the airline in the six o’clock position to avoid
water from accumulating inside.
MAINTENANCE
Figure 1
16
Nexen offers two different kits to aid in the maintenance of the LSCC: a facing kit and a repair kit (See REPAIR
KITS SECTION for part numbers). The facing kit contains friction facings, steel friction plates, and springs. The
repair kit includes o-rings and bearings.
FACING KIT
NOTE: The following tools are needed to press the unit
apart: a shaft, two sections of I-beam, and standard
retaining ring pliers.
To press the unit together, you will use a hollow shaft
fixture, making sure there is contact with the inner race
of the bearing while pressing (See Table 2 and Figure 2).
1. Remove the Retaining Ring (Item 14) from the Hub
Item 2) at the Air Chamber end of the unit.
2. Set the unit on the two pieces of I-beam (as shown
in Figure 2) with the Air Chamber end of the unit
resting on the I-beams.
Figure 2
DISASSEMBLY
Shaft Ø Web Thickness
Table 1
Support the pilot end while pressing on the hub to prevent
the unit from falling to the floor.
ledoM ØtfahS ØtfahSwolloH beW ssenkcihT
23-CCSL
mm8.43-4.52 ]"73.1-00.1[ DI]"4.1[mm5.53 mm6.6 ]"52.0[
DO]"01.2[mm3.35
44-CCSL
mm1.34-3.14 ]"07.1-526.1[ DI]"08.1[mm7.54 mm2.01 ]"04.0[
DO]"06.2[mm0.66
45-CCSL
8.05-1.14 ]"00.2-26.1[ DI]"52.2[mm2.75 mm6.8 ]"43.0[
DO]"05.3[mm9.88
Table 2
PRPR
PRPR
PREE
EE
ESSSS
SSSS
SS
Always wear safety
goggles when
working with spring
or tension loaded
devices such as
retaining rings.
WARNING
Model LSCC-32 LSCC-44 LSCC-54
Bolt Size 1/4 - 20 1/4 - 20 5/16 - 20
5FORM NO. L-21099-E-0904
14
61
215
4
17
54
54
10
13
19
7
3
6
14
12
7
REPAIR KIT
The repair kit replaces bearings and o-rings.
NOTE: See Figure 2 and Table 2 for correct tools.
1. Remove the Retaining Ring (Item 14) from the Hub
(Item 2) at the Air Chamber end of the unit.
2. Set the unit on the two pieces of I-beam (as shown
in Figure 2) with the unit sitting on the I-beams.
3. Using an Arbor Press, align the proper diameter
shaft with the Hub and apply pressure with the
ArborPress.
NOTE: Support the pilot end of the unit as the Hub is
pressed out to prevent the unit from falling to the floor.
4. Remove the Friction Facings (Item 4) and Friction
Plates (Item 5) along with Springs from the drive
pins.
NOTE: Take carenottoloseany springs as they arenot
provided in this kit.
3. Using an Arbor Press, align the proper shaft (as
shown in Table 2) with the Hub and apply pressure
with the Arbor Press.
NOTE: Support the pilot end of the unit as the Hub is
pressed out to prevent the unit from falling to the floor.
4. Remove the Friction Facings (Item 4) and Friction
Plates (Item 5) along with the springs from the drive
pins.
REASSEMBLY
(Refer to Figure 3)
5. Using a degreaser, clean both ends of the unit
removing all facing dust and grease before
reassembly.
6. Reassemble the unit (Pilot end down) by replacing
(in order) the Facings, Friction Plates, and Springs
on the Drive Pins.
7. Position the unit in an Arbor Press and place the Air
Chamber/Piston combination on top of the Hub.
8. Holding the Air Chamber (Item 3) and the hollow
shaft on top of the Hub (Item 2), press the Air
Chamber (Item 3) back onto the Hub using the
hollow shaft fixture.
9. Insert the Retaining Ring (Item 14) back onto the
Hub (Item 1).
10. Verify that the unit is functional by applying air to
the unit and watching it engage and disengage.
Figure 4
Figure 3
Always wear safety
goggles when
working with spring
or tension loaded
devices such as
retaining rings.
WARNING
10 12
13
11 3
FORM NO. L-21099-E-0904 6
Figure 5
3
6
14
Figure 6
Figure 7
215
444
19
55
Refer to Figures 4 & 5.
5. Carefully and Slowly apply air to the Air Chamber
(Item 3) while rocking the bearing and piston
combination. The Piston (Item 11) and Bearing
(Item 10) should now be separated from Air
Chamber (Item 3) housing.
6. Remove Bearing (Item 10) from Piston (Item 11).
7. Clean the new Bearing (Item 10) and Piston (Item
11) surface and apply an adequate amount of
Loctite®680 to evenly coat the outer race of the
new bearing.
8. Press the new Bearing (Item 10) onto the Piston.
9. Press the Bearing (Item 6) out of the Air Chamber
(Item 3).
10. Clean the new Bearing (Item 6) and Air Chamber
(Item 3) surface and apply an adequate amount of
Loctite®680 to evenly coat the outer race of the
new bearing.
11. Install the new bearing (Item 6) into the Air
Chamber (Item 3), taking care to press on the OD
of the bearing to prevent Brinelling of the races.
12. Remove the O-rings (Items 12 & 13) from the
Piston (Item 11) and clean the piston so it is free of
any contaminants.
13. Install new O-rings (Items 12 & 13) and apply a
generous amount of lubrication to the O-rings and
the Air Chamber wall it rides against.
14. Remove Retaining Rings (Item 7 & 14) from the
Pilot (Item 2) end of the unit.
15. Remove the Hub (Item 1) from the Pilot (Item 2).
16. Using the proper fixtures, press the old bearing (Item
6) out of the Pilot (Item 2).
NOTE: Be sure to use a fixture that will support the
Pilot (Item 3), keeping the pins from being damaged.
17. Clean the new Bearing (Item 6) and Pilot (Item 2)
surface and apply an adequate amount of Loctite®
680 to evenly coat the outer race of the new
bearing.
18. Press new Bearing (Item 6) into Pilot (Item 2).
REASSEMBLY
19. Support the inner race of the pilot Bearing (Item 6)
and press the Hub into the Pilot (Item 1). Reinstall
the retaining rings.
20. Reinstall all of Friction Facings (Item 4), Friction
Plates (Item 5), Springs (Item 19) and Washers
(Item 20). (See Figure 7.)
21. Set the Pilot/Hug assembly on the Arbor Press and
place the Air Chamber/Piston assembly on top of
the Hub.
22. Holding the Air Chamber (Item 3) and the hollow
shaft on top of the hub, press Air Chamber back
onto the unit.
23. Insert the Retaining Ring (Item 14) onto the Hub
(Item 1).
24. Verify the unit is functional by applying air to the
unit and watching it engage and disengage.
6
215
7
7FORM NO. L-21099-E-0904
Springs
Friction Facings
Pilot
Retaining Ring
Retaining Ring
Hub
Bearing (Item 6)
Friction Discs
Clutch Release Bearing
(Item 10)
O-Ring
Air Chamber
Bearing (Item 6)
Retaining Ring
TROUBLESHOOTING
FIFI
FIFI
FIGG
GG
GUU
UU
URR
RR
RE 8E 8
E 8E 8
E 8
Symptom Probable Cause Solution
Failure to engage
Worn Friction Facings Replace the Friction Facings.
Air not getting to the Mutiple Disc.
Clutch
Check for a control valve malfunction
or low air pressure and replace the
control valve if necessary.
Air leaks around the O-ring Seals Replace the O-ring Seals
Failure to disengage Broken or weak Springs Replace the Springs.
Excessive drag Defective Ball Bearings Replace the Ball Bearings.
FORM NO. L-21099-E-0904 8
ITEM DESCRIPTION QTY ITEM DESCRIPTION QTY
1Hub112
1
O-Ring Seal 1
2 Pilot Drive Flange 1 13
1
O-Ring Seal 1
3 Air Chamber 1 14 Retaining Ring 2
4
2
Friction Facing 3 15 Dowel Pin 6
5
2
Friction Plate 2 16 Set Screw 3
6
1
Ball Bearing 2 17
2
Compression Spring 12
7 Retaining Ring 2 18 Square Key 1
10
1
Clutch Release Ball Bearing 1 19 Slotted Spring Pin 1
11 Piston 1
14
6
1
2
15
4
16
17
54
54
10
13
19
11
3
6
14
12
7
7
PARTS LIST
FIGURE9
REPAIR KITS
1Denotes repair kit items. 2Denotes facing kit items.
Size 32 Size 44 Size 54
PSI Maximum RPM
80 300 250 250
70 400 300 300
60 550 350 350
50 800 450 450
40 1000 750 750
Table 3 Maximum Operating Speeds
Refer to Table 3 for maximum operating speeds (RPM) for
each LSCC model.
NOTE: Contact the factory if operating at higher speeds.
MODEL
LSCC-32
LSCC-44
LSCC-54
FACING KIT
923560
923552
923578
REPAIR KIT
923559
923551
923577
MAXIMUM RPM
9FORM NO. L-21099-E-0904
WARRANTY
Warranties
Nexen warrants that the Products will be free from any defects in material or workmanship for a period of 12 months
from the date of shipment. NEXEN MAKES NO OTHER WARRANTY, EXPRESS OR IMPLIED, AND ALL IMPLIED
WARRANTIES, INCLUDING WITHOUT LIMITATION, IMPLIED WARRANTIES OF MERCHANTABILITY AND FIT-
NESS FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. This warranty applies only if (a) the
Product has been installed, used and maintained in accordance with any applicable Nexen installation or maintenance
manual for the Product; (b) the alleged defect is not attributable to normal wear and tear; (c) the Product has not
been altered, misused or used for purposes other than those for which it was intended; and (d) Buyer has given written
notice of the alleged defect to Nexen, and delivered the allegedly defective Product to Nexen, within one year of the
date of shipment.
ExclusiveRemedy
The exclusive remedy of the Buyer for any breach of the warranties set out above will be, at the sole discretion of
Nexen, a repair or replacement with new, serviceably used or reconditioned Product, or issuance of credit in the
amount of the purchase price paid to Nexen by the Buyer for the Products.
Limitation of Nexen’s Liability
TO THE EXTENT PERMITTED BY LAW NEXEN SHALL HAVE NO LIABILITY TO BUYER OR ANY OTHER PERSON
FOR INCIDENTAL DAMAGES, SPECIAL DAMAGES, CONSEQUENTIAL DAMAGES OR OTHER DAMAGES OF
ANY KIND OR NATURE WHATSOEVER, WHETHER ARISING OUT OF BREACH OF WARRANTY OR OTHER
BREACH OF CONTRACT, NEGLIGENCE OR OTHER TORT, OR OTHERWISE, EVEN IF NEXEN SHALL HAVE
BEEN ADVISED OF THE POSSIBILITY OR LIKELIHOOD OF SUCH POTENTIAL LOSS OR DAMAGE. For all of
the purposes hereof, the term “consequential damages” shall include lost profits, penalties, delay images, liquidated
damages or other damages and liabilities which Buyer shall be obligated to pay or which Buyer may incur based
upon, related to or arising out of its contracts with its customers or other third parties. In no event shall Nexen be liable
for any amount of damages in excess of amounts paid by Buyer for Products or services as to which a breach of
contract has been determined to exist. The parties expressly agree that the price for the Products and the services
was determined in consideration of the limitation on damages set forth herein and such limitation has been specifically
bargained for and constitutes an agreed allocation of risk which shall survive the determination of any court of compe-
tent jurisdiction that any remedy herein fails of its essential purpose.
Limitationof Damages
In no event shall Nexen be liable for any consequential, indirect, incidental, or special damages of any nature whatso-
ever, including without limitation, lost profits arising from the sale or use of the Products.
Warranty Claim Procedures
To make a claim under this warranty, the claimant must give written notice of the alleged defect to whom the Product
was purchased from and deliver the Product to same within one year of the date on which the alleged defect first
became apparent.
Nexen Group, Inc.
560 Oak Grove Parkway
Vadnais Heights, MN 55127
800.843.7445
Fax: 651.286.1099
www.nexengroup.com
ISO 9001 Certified
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