Nexen 802870 User Manual Download Page 7

7

FORM NO. L-21026-D-0105

CLUTCH ASSEMBLY

NOTE: Refer to Figures 5, 6, 7 and 8

1.

Remove the Retaining Ring (item 2) from the pilot
end of the clutch.

2.

Use a bearing puller tool to remove the Pilot Mount
Disc (item 15) and Ball Bearing (item 3) from the
Hub (item 1).

NOTE: A Sheave (Item 4-not shown) may be used
instead of the Pilot Mount Disc (item 15) when B-275
model #802872 or B-275 model #802873 is used.

3.

Remove the Spring Retaining Washer (item 23)
and Wave Spring (item 5).

4.

Fully support the Pilot Mount Disc (item 15) and
press the Ball Bearing (item 3) out of the Pilot
Mount Disc (item 15).

NOTE: Do not reuse this bearing.  The force required to
press the bearing out of the Pilot Mount Disc damages
the bearing.

5.

Clean the bearing bore of the Pilot Mount Disc
(item 15) with fresh safety solvent, removing all old
Loctite® residue.

6.

Apply an adequate amount of Loctite® 680 to evenly
coat the outer race of the new Bearing (item 3).

7.

Carefully align the outer race of the new Ball
Bearing (item 3) with the bore of the Pilot Mount
Disc (item 15).

8.

Support the Pilot Mount Disc (item 15).  Press the
new Ball Bearing (item 3) into the Pilot Mount Disc
by pressing on the outer race of the Ball Bearing.

NOTE: Use only a new bearing.  Do not reuse the old
bearing.  The force required to press the old bearing
out of the Pilot Mount Disc damages the bearing.

9.

Slide the Friction Disc - Piston sub assembly from
the Hub (item 1).

10. Remove the O-ring Seal (item 10) from the Piston

(item 13).

11. Remove the O-ring Seal (item 11) from the Air

Chamber (item 9).

12. Fully support the Piston (item 13) and press the

Friction Disc Assembly (item 7) out of the Ball
Bearing (item 32).

FIGURE  5

(continued...)

FIGURE  6

Friction Disc-Piston

Assembly

Hub

Air Chamber

Retaining Ring

(Item 2)

Bearing
(Item 3)

Spring Retaining

Washer

(Item 23)

Pilot Mount

Disc

(Item 15)

Friction Disc-Piston

Assembly

Hub

Air Chamber

Wave Spring

(Item 5)

®

DIST. AUTORIZADO

MEX (55) 53 63 23 31
QRO (442) 1 95 72 60

MTY (81) 83 54 10 18
[email protected]

Summary of Contents for 802870

Page 1: ...B275 Clutch Sheave Pilot and Coupling Mount FORM NO L 21026 D 0105 DIST AUTORIZADO MEX 55 53 63 23 31 QRO 442 1 95 72 60 MTY 81 83 54 10 18 ventas industrialmagza com...

Page 2: ...5900 www nexengroup com Copyright 2003 Nexen Group Inc Nexen Group Inc 560 Oak Grove Parkway Vadnais Heights Minnesota 55127 ISO 9001 Certified Read this manual carefully before installation and opera...

Page 3: ...ecifications 4 Accessories 4 Installation 5 Air Line Connections 6 Air Preparation 6 Clutch Assembly 8 Troubleshooting 10 Replacement Parts List 11 Warranty 12 DIST AUTORIZADO MEX 55 53 63 23 31 QRO 4...

Page 4: ...thermal horsepower rating of 0 05 at 1800 rpm The B 275 Clutch and Brake can operate at speeds up to 3600 rpm SPECIFICATIONS Product Number Bore Size Mounting Configuration Friction Facing Type 80287...

Page 5: ...he Pilot Mount B 275 Clutch 7 Insert and tighten the Set Screws provided with the Coupling Adapter BRAKE ADAPTER MOUNTING NOTE Refer to Figure 3 1 Using the Cap Screws provided with the Brake Adapter...

Page 6: ...w the use of lubricated air The preparation of the air is critical to the life of clutch brake seals To prepare the air filter the air to 5 microns or better The dew point specification should be 40 F...

Page 7: ...er race of the new Bearing item 3 7 Carefully align the outer race of the new Ball Bearing item 3 with the bore of the Pilot Mount Disc item 15 8 Support the Pilot Mount Disc item 15 Press the new Bal...

Page 8: ...22 Fully Support the Air Chamber item 9 and press the Hub item 1 out of the Air Chamber 23 Remove the Retaining Ring item 30 from the Air Chamber item 9 24 Fully support the Air Chamber item 9 and pr...

Page 9: ...nner race of the Ball Bearing item 8 and press the Hub item 1 into the Bearing Air Chamber assembly 35 Install the Retaining Ring item 2 into the Hub item 1 at the end where it meets the Air Chamber 3...

Page 10: ...of Never Seezfi or check the air line lubricator settings Failure to disengage Unexhausted air due to control valve malfunction Check for a control valve malfunction and replace the control valve if...

Page 11: ...0 Sheave Item 4 or ITEM DESCRIPTION QTY ITEM DESCRIPTION QTY 1 Hub 1 13 Piston 1 2 Retaining Ring Ext 2 15 Pilot Mount Disc pilot mount model only 1 3 Ball Bearing 1 18 Air Inlet Fitting 1 4 Sheave sh...

Page 12: ...RT 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...

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