Nexen DPC-13T User Manual

Clutch and Pilot Assembly

Models DPC-13T and DPC-15T

1

FORM NO. L-20093-L-1209

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
[phone]

www.nexengroup.com

DANGER

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, cause injury or death. Comply with
all applicable codes.

This document is the original, non-translated, version.

Conformity Declaration: In accordance with Appendix II B of CE Machinery Directive (2006/42/EC):

A Declaration of Incorporation of Partly Completed Machinery evaluation for the applicable EU directives was
carried out for this product in accordance with the Machinery Directive. The declaration of incorporation is set
out in writing in a separate document and can be requested if required.

This machinery is incomplete and must not be put into service until the machinery into which it is to be
incorporated has been declared in conformity with the applicable provisions of the Directive.

Copyright 2009 Nexen Group, Inc.

FORM NO. L-20093-L-1209

Nexen Group, Inc.

560 Oak Grove Parkway

Vadnais Heights, Minnesota 55127

ISO 9001 Certified

2

TABLE OF CONTENTS

General Specifications ------------------------------------------------------------------------------------------------------------------------- 4

General Safety Precautions ------------------------------------------------------------------------------------------------------------------- 4

Introduction ------------------------------------------------------------------------------------------------------------------------------------------ 5

Installation ------------------------------------------------------------------------------------------------------------------------------------------- 5

Lubrication ------------------------------------------------------------------------------------------------------------------------------------------- 8

Air Connections ----------------------------------------------------------------------------------------------------------------------------------- 9

Operation ------------------------------------------------------------------------------------------------------------------------------------------ 11

Parts Replacement ----------------------------------------------------------------------------------------------------------------------------- 12

Replacement Parts ----------------------------------------------------------------------------------------------------------------------------- 15

Warranty -------------------------------------------------------------------------------------------------------------------------------------------- 16

3

FORM NO. L-20093-L-1209

GENERAL SPECIFICATIONS

Specifications:

Torque Up to 4067 Nm (36000 in-lbs)

Actuation Pressure 1 - 5.5 bar (14.5 - 80 psi)

Service Temperature 4.5 - 104 C (40 - 220 F)

Approximate Weight Up to 115 kg (254 lbs)

GENERAL SAFETY PRECAUTIONS

CAUTION

Use lifting aids and proper lifting
techniques when installing, removing,
or placing this product in service.

CAUTION

Watch for sharp features when
interacting with this product. The
parts have complex shapes and
machined edges.

WARNING

Ensure proper guarding of the product is used.
Nexen recommends the machine builder
design guarding in compliance with OSHA 29
CFR 1910 “Occupational Safety and Health
Hazards”.

CAUTION

Surface temperature may
exceed safe handling limits
during operation. Do not touch.

CAUTION

Use appropriate guarding for moving
components. Failure to guard could
result in serious bodily injury.

CAUTION

This product has possible pinch
points. Care should be taken
when interacting with this product.

WARNING

This product is capable of emitting
a spark if misused therefore is not
recommended for use in any explosive
environment.

Use appropriate guarding for moving
components. Failure to guard could
result in serious bodily injury.

FORM NO. L-20093-L-1209

CAUTION

This product has possible pinch

CAUTION

points. Care should be taken
when interacting with this product.

4

INTRODUCTION

LEDOM

GNIHSUB

EPYT

MUMIXAM

EROB

TLOBPU-LLUP

GNINETHGIT

EUQROT

T31-CPD F 005.3 .SBL.TF57

T51-CPD J 000.4 .SBL.TF211

LEDOM ELCRICTLOB SELOHTLOB

T31-CPD ]mm55.902["052.8 decapSyllauqE6

T51-CPD ]mm06.822["00.9 decapSyllauqE6

Nexen’s modularized DPC (Dual Friction Plate) Clutches
are designed to mount on shaft ends, or on through shafts
using customer supplied Q.D. (Quick Detachable) Bushings.
The dual friction plate design eliminates thrust loading of
bearings when the DPC Clutch is connected to the Pilot
Assembly, or a bearing supported Flywheel, Sheave, or
Sprocket.

Seven components are combined to install Nexen’s DPC
Clutch as an Element Clutch, Pilot Mount Clutch, or a
Sheave Clutch.

The seven basic components (each sold separately) are:
DPC”Clutch, Q.D. Bushing (customer supplied), Rotary Air
Union (supplied with DPC Clutch), Rotary Air Union Cap,
Sheave, Pilot Assembly, and Bushing.

INSTALLATION

NOTE: All DPC Clutch installations require a Q.D. (Quick

Detachable) Bushing. Refer to Table 1 for Q.D.
Bushing Specifications.

ELEMENT CLUTCH

The inner and outer assemblies of the DPC Clutch rotate
independently.

When mounted of a through shaft, the outer clutch assembly
rotates, and upon engagement, the inner clutch assembly
becomes the driven member.

When mounted on a continually running shaft, the inner
clutch assembly rotates, and upon engagement, the outer
clutch assembly becomes the driven member.

Nexen recommends mounting the DPC Clutch with the outer
clutch assembly rotating continuously; taking advantage
of the cooling effect of the fin to dissipate heat generated
when the clutch is engaged.

TABLE 1

Refer to Figures 1 & 2.

1. Remove Lock Nuts (Item 20).

2. Remove Friction Disc (Item 7), and Flange Mount
Housing (Item 6) from Flange Mount Disc (Item 5).

3. Set DPC inner assembly aside.

4. Using Cap Screws (Item 21), attach Flange Mount Disc
(Item 6) to bearing supported component. (See Table

2).

5. Tighten Cap Screws (Item 21) to recommended torque
(See Table 3).

6. Thoroughly inspect the tapered bore of the Splined
Hub (Item 1), and tapered surface of the Q.D. Bushing.
Remove any dirt, grease, or foreign material.

7. Install Q.D. Bushing into Splined Hub (Item 1); aligning
untapped holes in Q.D. Bushing with tapped holes in
Splined Hub.

NOTE
Do not strike the Q.D. Bushing to set it in the tapered
bore.

5

21

FIGURE 1

TABLE 2

6

20

7

1

Pull-Up

Bolts

Q.D. Bushing

8. Loosely insert the Q.D. Bushing Pull-Up Bolts, and
Lockwashers into the Q.D. Bushing, and the tapped
holes of the Splined Hub.

5

FORM NO. L-20093-L-1209

INSTALLATION (continued)

NOTE: Do not use lubricants or thread locking

compounds on Pull-Up Bolts.

9. Using a Dial Indicator, measure runout of motor shaft.
Runout must not exceed 0.002 T.I.R. (Total Indicated
Reading).

10. Insert Key into motor shaft keyway.

11. Slide the DPC Clutch inner assembly onto the motor
shaft.

NOTE
There must be a gap of approximately 1/32" between
the Friction Facing (Item 4), and the friction surface
of the Flange Mount Disc (Item 5). To obtain this
1/32" gap; insert three equally spaced 1/32" shims
between the Friction Facing and the Friction surface
of the Flange Mount Disc, and clamp the DPC inner
assembly, and the Flange Mount Disc together at
each shim location.

12. Alternately, and evenly, tighten Q.D. Bushing Pull-Up
Bolts to the recommended torque (See Table 3).

TABLE 3

NOITPIRCSED T31-CPD T51-CPD

)12metI(wercSpaC

02metI(tuNkcoL

stloBPU-lluP

.TF911

.SBL

.TF07

.SBL

.TF57

.SBL

Q.D. Bushing

Pull-Up

Bolts

.TF911

.SBL

.TF07

.SBL

.TF211

.SBL

NOTE
To avoid preloading of the bearings; the motor shaft
must be free to “float” when tightening the Q.D.
Bushing Pull-Up Bolts.

NOTE
Runout is minimized if a Dial Indicator is used as the Q.D.
Bushing Pull-Up Bolts are tightened. Place the contact
tip of the Dial Indicator on the machined surface of the
Splined Hub to measure runout. Runout at this surface
must be within 0.003 T.I.R when the Pull-Up Bolts are
tightened.

NOTE
Do not over tighten Pull-Up Bolts. If excessive
tightening torque is applied; bursting pressure is
created in the Splined Hub.

13. Remove all shims and clamps.

14. Install the Housing (Item 6), and Friction Disc (Item 7),
and secure them with Lock Nuts (Item 20).

15. Tighten the Lock Nuts (Item 20) to the recommended
torque (See Table 3).

Dial

Indicator

FIGURE 2

FORM NO. L-20093-L-1209

6

NOITPIRCSED T31-CPD T51-CPD

)12metI(wercSpaC

.TF911

.SBL

.TF911

.SBL

)82metI(wercSpaC

.TF84

.SBL

.TF84

.SBL

02metI(tuNkcoL

.TF07

.SBL

.TF07

.SBL

stloBPU-lluP

.TF57

.SBL

.TF211

.SBL

INSTALLATION (continued)

PILOT CLUTCH

Refer to Figures 3 & 4.

NOTE: The Pilot Clutch is a combination of the Element

Clutch and a Pilot Assembly.

Support
Bushing

23

5

28

Q.D. Bushing

1. Install Support Bushing, if required.

NOTE: The Support Bushing provides radial load support

at the shaft, and is used when bore sizes smaller
than standard are required.

a. Place Pilot Assembly face down, and fully support

the flange of the Extension Hub (Item 22).

b. Insert the Support Bushing into the bore of the

Extension Hub (Item 22).

c. Apply even pressure around the entire diameter of

the Support Bushing, and press the Support Bushing
into the Extension Hub.

NOTE: Do not use a hammer to install the Support

Bushing; a small Arbor Press is recommended.

2. Push the Pilot Assembly into the Element Clutch, and align
the counterbored holes in the Pilot Housing (Item 23) with
the tapped holes in the Flange Mount Disc (Item 5).

3. Install the Cap Screws (Item 21), and tighten them to the
recommended torque (See Table 4).

4. Align the counterbored holes of the Splined Hub (Item 1)
with the tapped holes of the Hub Extension (Item 22).

5. Install Cap Screw (Item 28), and tighten them to the
recommended torque (See Table 4).

FIGURE 3

FIGURE 4

TABLE 4

21

22

1

Pull-Up

Bolts

Q.D. Bushing

Pull-Up

Bolts

Dial
Indicator

6. Thoroughly inspect the tapered bore of the Splined Hub,
and the tapered surface of the Q.D. Bushing; remove any
dirt, grease, or foreign material.

NOTE: Do not use lubricants when installing the Q.D.

Bushing.

7. Install the Q.D. Bushing into the Splined Hub; aligning
the untapped holes in the Q.D. Bushing with the tapped
holes in the Splined Hub.

NOTE
Do not strike the Q.D. Bushing to “set” it in the tapered
bore.

8. Loosely insert the Pull-Up Bolts, and Lockwashers into
the Q.D. Bushing, and tapped holes of the Splined Hub.

NOTE: Do not use lubricants or thread locking compounds

on the Pull-Up Bolts.

9. Measure the motor shaft runout. The runout must not
exceed 0.002 T.I.R. (Total Indicator Reading).

10. Insert Key into keyway.

11. Slide “DPC” Pilot Clutch onto the motor shaft.

12. Alternately, and evenly tighten Pull-Up Bolts to the
recommended torque (See Table 4).

NOTE
Do not over tighten Pull-Up Bolts. If excessive tightening
torque is applied, bursting pressure is created in the
Splined Hub.

NOTE: Runout is minimized if a Dial Indicator is used as

the Q.D. Bushing Pull-Up Bolts are tightened.
Place the contact tip of the Dial Indicator on the
machined surface of the Splined Hub to measure
runout. Runout on this surface must be within

0.003 T.I.R. when the Pull-Up Bolts are tightened.

7

FORM NO. L-20093-L-1209

NOITPIRCSED T31-CPD T51-CPD

)12metI(wercSpaC .SBL.TF911 .SBL.TF911

)82metI(wercSpaC .SBL.TF84 .SBL.TF84

)33metI(wercSpaC .SBL.TF911 .SBL.TF911

02metI(tuNkcoL .SBL.TF07 .SBL.TF07

stloBPU-lluP .SBL.TF57 .SBL.TF211

INSTALLATION (continued)

SHEAVE CLUTCH

Refer to Figure 5.

NOTE: The Sheave Clutch is a combination of the Element
Clutch, Pilot Assembly, and Sheave.

1. Proceed with Steps 1 through 5 for the Pilot Clutch

installation.

2. Slide the Sheave (Item 32) onto the Pilot Assembly.

3. Align the sheave mounting holes with the tapped holes
in the Pilot Housing (item 23).

4. Using Cap Screws (Item 33), and Lockwashers (Item

34), secure the Sheave onto the Pilot Assembly.

5. Tighten the Cap Screws (Item 33) to the recommended
torque (See Table 5).

6. Proceed with Steps 6 through 12, for the Pilot Clutch
installation.

LUBRICATION

FIGURE 5

TABLE 5

33

34

32

23

Nexen pneumatically actuated devices require clean, pressure regulated air for maximum performance and life.

NOTE

All seals in Nexen pneumatically operated devices are lubricated for life, and do not require additional lubrication.

However, some customers prefer to use an air line lubricator, which injects oil into the pressurized air, forcing
an oil mist into the air chamber. This is acceptable, but care must be taken to ensure once an air mist lubrication
system is used, it is continually used over the life of the product as the oil mist may wash free the factory
installed lubrication.

Locate the lubricator above and within ten feet of the product, and use low viscosity oil such as SAE-10.

Synthetic lubricants are not recommended.

Nexen product's bearings are shielded and pre-lubricated, and require no further lubrication.

LUBRICATOR DRIP RATE SETTINGS

CAUTION

4. Close the air line to the unit when a drop of oil forms
in the Lubricator Sight Gage.

These settings are for Nexen supplied
lubricators. If you are not using a Nexen
lubricator, calibration must follow the
manufacturer's suggested procedure.

5. Connect the air line to the unit.

6. Turn the Lubricator Adjustment Knob clockwise until
closed.

1. Close and disconnect the air line from the unit.

2. Turn the Lubricator Adjustment Knob counterclockwise
three complete turns.

3. Open the air line.

7. Turn the Lubricator Adjustment Knob counterclockwise
one-third turn.

8. Open the air line to the unit.

FORM NO. L-20093-L-1209

8

AIR CONNECTIONS

NOITPIRCSED T31-CPD T51-CPD

)13metI(wercSpaC

.TF57

.SBL

.TF211

.SBL

All Nexen pneumatically actuated devices require clean
and dry air, which meet or exceeds ISO 8573.1:2001
Class 4.4.3 quality.

NOTE
For quick response, Nexen recommends a quick exhaust
valve and short air lines between the Control Valves and
the product. Align the air inlet ports to a down position
to allow condensation to drain out of the air chambers
of the product.

CAUTION

Low air pressure will cause slippage and
overheating. Excessive air pressure will
cause abrupt starts and stops, reducing
product life.

SHAFT END MOUNTING

Refer to Figure 6.

1. Install two Elbow Fittings (Item 17) into the Rotary Air
Union Cap (Item 30).

The following is a common air supply scheme used with
this product. This is an example and not an all-inclusive
list. All air circuits to be used with this product must be
designed following EN983 guidelines.

2. Install an Adaptor Fitting (Item 16), and an Elbow Fitting
(Item 17) into each air inlet of the Piston/Drive Disc.

3. Using Cap Screws (Item 31), attach the Rotary Air
Union Cap (Item 30) to the tapped holes of the Q.D.
Bushing.

NOTE: The Rotary Air Union Cap air outlets must be

aligned at approximately 82-1/2º to the Piston/
Drive Disc air inlets for proper Hose (Item 18)
connection.

4. Tighten the Cap Screws (Item 31) to the recommended
torque (See Table 6).

5. Install Hoses (Item 18).

6. Install the Rotary Air Union (Item 15).

7. Connect the air supply to the Rotary Air Union.

NOTE: Do not use rigid pipe or tubing for this

connection. For fast engagement, and
disengagement, connect the air controls as
close to the “DPC” Clutch as possible. Where
long air lines are required, use a Quick Exhaust
Valve.

2

17

16

17

FIGURE 6

TABLE 6

18

18

17

30

16

17

31

9

FORM NO. L-20093-L-1209

AIR CONNECTIONS (continued)

THROUGH SHAFT MOUNTING

Refer to Figure 7.

1. Drill a 3/8" diameter hole into the center of the shaft;
deep enough to reach the desired air outlets.

NOTE: Air outlets should be approximately 3/8" from

the end of the Hub.

2. Tap the end of the Shaft 5/8–18 by 5/8" deep.

3. Drill a 11/32" diameter air outlet hole through the Shaft;
intersecting the air inlet hole approximately 3/8" from
the end of the Hub.

4. Tap both air holes 1/8-27 NPT by 5/8" deep.

5. Install two Elbow Fittings (Item 17) into each air outlet
hole.

6. Install an Adaptor Fitting (Item 16), and an Elbow Fitting
(Item 17) into each air inlet of the Piston/Drive Disc
(Item 2).

FIGURE 7

7. Install Hoses (Item 18).

8. Install the Rotary Air Union (Item 15).

9. Connect the air supply to the Rotary Air Union.

NOTE: Do not use rigid pipe or tubing for this

connection. For fast engagement, and
disengagement, connect the air controls as
close to the “DPC” Clutch as possible. Where
long air lines are required, use a Quick Exhaust
Valve.

FORM NO. L-20093-L-1209

10

NOITPIRCSED T31-CPD T51-CPD

)31metI(wercSredluohS .SBL.TF9 .SBL.TF9

)12metI(wercSpaC .SBL.TF911 .SBL.TF911

)82metI(wercSpaC .SBL.TF84 .SBL.TF84

)13metI(wercSpaC .SBL.TF57 .SBL.TF211

)33metI(wercSpaC .SBL.TF911 .SBL.TF911

02metI(tuNkcoL .SBL.TF07 .SBL.TF07

stloBPU-lluP .SBL.TF57 .SBL.TF211

LEDOM

RETUO

YLBMESSA

YLBMESSARENNI

T31-CPD .M.P.R0021 .M.P.R0002

T51-CPD .M.P.R009 .M.P.R0071

OPERATION

CAUTION

Never exceed life of facing material. Facing
life depends on the volume of material and
the total energy over the life of the unit.
Expected life (in hrs) can be found by:
Time=Volume/(Power*Wear Rate).

CAUTION

The temperature limits for this
product line are 4.5-104 Degree
Celsius (40-220 Degree F).

CAUTION

Prior to placing the DPC Clutch into
service; verify that all screws are secured
to the proper tightening torque (See
Table 7).

The DPC Clutch engages when air pressure is introduced
into the Cylinder/Drive Disc. Air pressure pushes the
Cylinder/Drive Disc against the Flange Mount Disc, and
forces the Piston/Drive Disc in the opposite direction.

WARNING

Ensure proper guarding of the product is
used. Nexen recommends the machine builder
design guarding in compliance with OSHA 29
CFR 1910 “Occupational Safety and Health
Hazards”.

TABLE 7

TABLE 8

Torque is transmitted through the Cylinder/Drive Disc and
Piston/Drive Disc splines to the Splined Hub attached to
the shaft with Q.D. Bushings.

Heat generated at the friction surfaces is dissipated by
windage created by fins on the Flange Mount Disc, and
Friction Disc.

When air is exhausted from the Cylinder, Return Springs
pull the Piston to a disengaged position.

CAUTION

Never exceed recommended
operating speeds (See Table 8).

11

FORM NO. L-20093-L-1209

PARTS REPLACEMENT

NOITPIRCSED T31-CPD T51-CPD

)31metI(wercSredluohS .SBL.TF9 .SBL.TF9

)12metI(wercSpaC .SBL.TF911 .SBL.TF911

)82metI(wercSpaC .SBL.TF84 .SBL.TF84

)13metI(wercSpaC .SBL.TF57 .SBL.TF211

)33metI(wercSpaC .SBL.TF911 .SBL.TF911

02metI(tuNkcoL .SBL.TF07 .SBL.TF07

stloBPU-lluP .SBL.TF57 .SBL.TF211

CAUTION

The Nexen DPC Clutch has been balanced
at the factory. During disassembly, mark the
components with chalk alignment marks to insure
correct alignment and balance as the DPC Clutch
is reassembled (See Fig. 8).

When reassembling the Nexen DPC Clutch,
make sure that all screws are tightened to the
recommended torque (See Table 9).

FRICTION FACING (ITEM 4).

Refer to Figure 9.

NOTE: Inspect Friction Facings for wear; and replace them

when they are approximately 9/32" thick. Friction
Facings can be replaced without removing the
DPC Clutch from the motor shaft.

1. Disconnect the air supply line, and Hose Assemblies
at the Piston/Drive Disc Elbow Fittings.

NOTE: If the DPC Clutch is shaft end mounted, remove

the Rotary Air Union End Cap (Item 30); on
through shaft installations, remove Elbow
Fittings (Item 17) from the shaft.

FIGURE 8

TABLE 9

Alignment

Mark

Alignment

Mark

Alignment

Mark

2. Remove Lock Nuts (Item 20).

3. Remove the Friction Disc (Item 7).

4. Remove the Shoulder Screws (Item 13), and Springs
(Item 14).

5. Slide the Piston/Drive Disc (Item 2) off the Splined Hub
(Item 1).

CAUTION

Working with spring loaded or tension
loaded fasteners and devices can cause
injury. Wear safety glasses and take the
appropriate safety precautions.

6. Remove the Retaining Ring (Item 10).

7. Slide the Cylinder/Drive Disc (Item 3) off the Splined
Hub (Item 1).

8. Remove Machine Screws (Item 11), and replace worn
Friction Facings (Item 4).

FORM NO. L-20093-L-1209

12

PARTS REPLACEMENT (continued)

NOTE: On some models of the DPC-13T and DPC-15T

the Machine Screws (Item 11) are assembled
with a green anaerobic thread locking
compound. If removal is difficult, strike the
end of the screwdriver with a hammer to break
the crystalline structure of this thread locking
compound before attempting to remove the
machine screws. The Machine Screws (Item

11) furnished with the new Friction Facings
have a locking patch and do not require the
use of a thread locking compound.

20

4

7

11

11

1

9. Reverse Steps 1 through 7 to reassemble the DPC
Clutch; noting all chalk alignment marks, and tighten all
screws to the recommended torque (See Table 9).

O-RINGS (ITEMS 8 & 9)

Refer to Figure 10.

NOTE: Replace O-Rings (Items 8 & 9) if there are noticeable

air leaks or a loss of torque.

1. Proceed with Steps 1 through 7 for Friction Facing
Replacement.

2. Remove old O-Rings (Items 8 & 9) and clean O-Ring
contact surfaces with fresh safety solvent.

3. Lubricate new O-Rings (Items 8 & 9), and O-Ring
contact surfaces with fresh O-Ring lubricant.

4. Install new O-Rings (Items 8 & 9).

5. Reverse Step 1 to reassemble the DPC Clutch, noting
the chalk alignment marks, and tighten all screws to the
recommended torque (See Table 9).

10

3

FIGURE 9

FIGURE 10

14

13

2

8

9

13

FORM NO. L-20093-L-1209

PARTS REPLACEMENT (continued)

PILOT ASSEMBLY BEARINGS (ITEM 25).

Refer to Figure 11.

NOTE: DPC Clutch Pilot Assembly Bearings (Item 25) are

prelubricated, sealed, and do not require further
lubrication.

1. Disconnect the air supply line, and Hose Assemblies
at the Piston/Drive Disc Elbow Fittings.

NOTE: If the DPC Clutch is shaft end mounted, remove

the Rotary Air Union Cap (Item 30). On through
shaft installations, remove the Elbow Fittings (Item

17) from the shaft.

2. Loosen the Q.D. Bushing.

a. Remove Q.D . Bushing pul l-up bolts and

lockwashers.

b. Insert the pull-up bolts into the tapped Q.D. Bushing

removal holes, and progressively tighten each one
until the Splined Hub (Item 1) is loose on the Q.D.
Bushing.

33

34

32

27

25

26

24 25

23

21

28

1

22

FIGURE 11

10. Remove Retaining Ring (Item 26).

11. Fully supporting the Pilot Housing (Item23); push out
the Bearings (Item 25), and Spacer (Item 24).

3. Wedge a screwdriver into the saw cut in the Q.D.
Bushing to loosen the Q.D. Bushing from the shaft,
then remove the DPC Clutch.

4. Remove the Cap Screws (Item 33), Lockwashers (Item

34), and Sheave (Item 32) if mounted to the DPC Clutch.

5. Remove Cap Screws (Item 28).

6. Remove Cap Screws (Item 21).

7. Remove the Pilot Assembly from the Element Clutch.

CAUTION

Working with spring loaded or tension
loaded fasteners and devices can cause
injury. Wear safety glasses and take the
appropriate safety precautions.

8. Remove Retaining Ring (Item 27) from the Pilot
Assembly.

9. Fully supporting the Pilot Housing (Item 32); press the
Hub Extension (Item 22) out of the Pilot Assembly.

12. Clean bearing contact surfaces of the Pilot Housing
(Item 23), and the Hub Extension (Item 22) with fresh
safety solvent.

13. Press first new Bearing (Item 25) onto Hub Extension
(Item 22).

14. Install the Spacer (Item 24).

15. Press the second Bearing (Item 25) onto the Hub
Extension (Item22).

16. Install Retaining Ring (Item 27).

17. Fully supporting the inner races of the new bearings;
push the Hub Extension (Item 22), with Bearings (Item

25), and Spacer (Item 24) into the Pilot Housing (Item

23).

18. Install Retaining Ring (Item 26).

19. Reinstall DPC Clutch (See Installation section).

FORM NO. L-20093-L-1209

14

REPLACEMENT PARTS

The Item or “Balloon” Number for all Nexen Products is used for
part identification on all Product Parts List, Product Price List, Unit
Assembly Drawings, Bills of Materials, and Instruction Manuals.

6

9

34

33

32

5

25 24 25 22

27

26

21

23

12

10

When ordering replacement parts, specify model designation, item
number, part description, and quantity. Purchase replacement
parts through your local Nexen Distributor.

3

20

14

7

11

16

1

17

13

4

8

28

17

15

30

2

31

FIGURE 12

ELEMENT CLUTCH

ITEM DESCRIPTION QTY

1 Splined Hub 1
2 Piston/Drive Disc 1
3 Cylinder/Drive Disc 1
4 Friction Facing 2
5 Flange Mount Disc 1
6 Housing 1
7 Friction Disc 1
8 O-Ring (Large) 1
9 O-Ring (Small) 1
10 Retaining Ring 1
11 Machine Screw 16
12 Cap Screw *
13 Shoulder Screw **
14 Spring **
15 Rotary Air Union 1
16 Adaptor Fitting 2
17 Elbow Fitting 4
18 Hose Assembly (Not Shown) 2
19 Hose Assembly (Not Shown) 1
20 Lock Nut *
21 Cap Screw 6

MODEL * QTY ** QTY

PILOT ASSEMBLY

ITEM DESCRIPTION QTY

22 Extension Hub 1
23 Pilot Housing 1
24 Spacer 1
25 Bearing 2
26 Retaining Ring 1
27 Retaining Ring 1
28 Cap Screw 3

CAP, ROTARY AIR UNION, & FASTENERS

ITEM DESCRIPTION QTY

30 Cap, Rotary Air Union 1
31 Cap Screw 3

SHEAVES & FASTENERS

ITEM DESCRIPTION QTY

32 Sheave 1
33 Cap Screw 6
34 Lockwasher 6

DPC-13T 8 8

DPC-15T 10 8

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FORM NO. L-20093-L-1209

Nexen Group, Inc.
560 Oak Grove Parkway
Vadnais Heights, MN 55127

800.843.7445
Fax: [phone]
www.nexengroup.com

ISO 9001 Certified

WARRANTY

Warranties

Nexen warrants that the Products will (a) be free from any defects in material or workmanship for a period of 12 months
from the date of shipment, and (b) will meet and perform in accordance with the specifications in any engineering drawing
specifically for the Product that is in Nexen’s current product catalogue, or that is accessible at the Nexen website, or that is
attached to this Quotation and that specifically refers to this Quotation by its number, subject in all cases to any limitations
and exclusions set out in the drawing. NEXEN MAKES NO OTHER WARRANTY, EXPRESS OR IMPLIED, AND ALL
IMPLIED WARRANTIES, INCLUDING WITHOUT LIMITATION, IMPLIED WARRANTIES OF MERCHANTABILITY AND
FITNESS 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.

Exclusive Remedy

The exclusive remedy for the Buyer for any breach of any warranties provided in connection with this agreement will be,
at the election of Nexen: (a) repair or replacement with new, serviceably used, or reconditioned parts or products; or (b)
issuance of credit in the amount of the purchase price paid to Nexen by the Buyer for the Products.

Agent's Authority

Buyer agrees that no agent, employee or representative of Nexen has authority to bind Nexen to any affirmation, representation,
or warranty concerning the Products other than those warranties expressly set forth herein.

Limitation on 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 damages, 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 competent jurisdiction that any remedy herein fails of its essential purpose.

Inspection

Buyer shall inspect all shipments of Products upon arrival and shall notify Nexen in writing, of any shortages or other failures
to conform to these terms and conditions which are reasonably discoverable upon arrival without opening any carton or
box in which the Products are contained. Such notice shall be sent within 14 days following arrival. All notifications shall be
accompanied by packing slips, inspection reports and other documents necessary to support Buyer's claims. In addition
to the foregoing obligations, in the event that Buyer receives Products that Buyer did not order, Buyer shall return the
erroneously shipped Products to Nexen within thirty (30) days of the date of the invoice for such Products; Nexen will pay
reasonable freight charges for the timely return of the erroneously shipped Products, and issue a credit to Buyer for the
returned Products at the price Buyer paid for them, including any shipping expenses that Nexen charged Buyer. All shortages,
overages and nonconformities not reported to Nexen as required by this section will be deemed waived.

Limitation on Actions

No action, regardless of form, arising out of any transaction to which these terms and conditions are applicable may be
brought by the Buyer more than one year after the cause of action has accrued.

FORM NO. L-20093-L-1209

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