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GENERAL DESCRIPTION
Dupont 

® 

Gancin

®

 347-Y-937 (347-Y-A937

liquid and 347-8937 zinc dust) is a two part,
one coat epoxy based organic zinc rich
primer, applied 3-4 mil dry film thickness with
1.5 hour normal recoat time. NOTE: When
mixing one gallon of epoxy and one gallon of
zinc, this will yield only one gallon of usable
zinc primer.

Dupont  

®

 25P (25P base, VF525 activator)

high solid epoxy (safety blue color) mastic is
a two part, two coat system applied 4-5 mil
dry film thickness per coat over zinc primed
surfaces with a three hour recoat time.
NOTE: When mixing one gallon of paint 
with one gallon of activator this will yield 
two gallons of usable cover paint.

READ MANUFACTURES INSTRUCTIONS
THOROUGHLY FOR PROPER HANDLING
AND SPRAY OF PAINT SYSTEM.

SURFACE PREPARATION
GANCIN 

®

 347-Y-937 primer should be 

applied only to clean, dry metal. Grease, oil
and other contaminants should be removed
with solvent. Follow instructions in Duponts
literature for surface preparations.

MASKING COMPONENTS.
Certain exposed areas of the mounting
flange, reaction plate, pressure plate, spring
housing, cylinder and assembly must not be
painted and need to be masked before 
painting. The following areas, MUST NOT
BE PAINTED, include:All copper wear faces,
all bushing bores, all springs, clamp tubes 
cylinder bore, mounting flange face, spring
housing piston and friction discs. 

APPLICATION CONDITIONS
Do not apply primer or epoxy if material or
ambient temperature is below 35° F (2°C) or
above 110° F (43°C). Relative humidity
should be below 90%. All necessary 
precautions must be taken to avoid 
contamination of the prepared surfaces.

APPLICATION
Handling, mixing, recoat drying times and ap-
plications must be in strict accordance with
instructions in manufacturers literature. 

Within 8 hours after the surface is cleaned
and when dry, apply one coat of Dupont 

®

Gancin

 ®

 347-Y-937 organic zinc-rich 

coating at 3-4 mils dry film thickness. 

After the first coat has dried sufficiently for
recoat, (normally depending on film thick-
ness, temperature, humidity, and method of
application) apply one coat of Dupont 

®

 25P

epoxy mastic 4-5 mils dry film thickness.
After the intermediate coat has dried 
sufficiently for recoat, (normally depending
on film thickness, temperature, humidity and
method of application) apply a second coat
of Dupont 

®

 25P epoxy mastic 4-5 mils dry

film thickness to complete three coat paint
system for required corrosion resistance.

INSPECTION

Spot check for the following:

Cleanliness and dryness of prepared 
surfaces.

Wet and dry film thickness after each coat.

Visual inspection for skips, hidings and 
uniform color, especially after touch-up on
the final assembly.

5.0

ORDERING INFORMATION/
TECHNICAL ASSISTANCE

5.1

Equipment Reference

5.1.1

In any correspondence regarding Airflex 
Equipment, refer to the information on the
product nameplate and call or write:

Eaton Corporation
Airflex Division
9919 Clinton Road
Cleveland, Ohio  44144
Tel.: (216) 281-2211
Toll free: 800/233-5890
Fax: (216) 281-3890

Loctite and Locquic are registered trademarks of Loctite 

Corporation.
Polypak and Parker O-Lube are registered trademarks of Parker
Hannifin Corporation.
MOLUB-ALLOY 412ES is a trademark of Castrol Oil Co.
Nituff is a trademark of Nimit Industries Inc.
Dupont Gancin is a trade mark of Dupont High Performance 
Coatings.
Teflon is a trademark of dupont co., film division.

DBB 8104   PDF format

13

© Copyright Eaton Corp., 1998. All rights reserved.

(Revised: January, 1998)

Summary of Contents for Airflex DBB

Page 1: ...f genuine Airflex replacement parts The use of non genuine Airflex replacement parts could result in substandard product performance and may void your Eaton warranty For optimum performance contact Ai...

Page 2: ...ic Maintenance 6 4 0 MAINTENANCE 6 4 1 Wear Limits 6 4 2 Wear Adjustment Disassembly 8 4 3 Friction Disc Replacement 8 4 4 Cylinder Seal Replacement 10 4 5 Spring Replacement 10 4 6 Bushing Replacemen...

Page 3: ...Tube 16 Spring Housing 28 Gear 17 Flat Washer 29 Wear Spacer 18 Lock Nut 31 Reaction Plate Sub assembly 19 Cylinder 32 Decal Plate 20 Hex head Screw 34 Release Spring 21 Polypak seal 36 Hex Head Screw...

Page 4: ...cast sur faces are painted with multiple coats of corrosion resistant paint Bronze bushings are provided in the reaction plate and pres sure plates to facilitate axial movement The clamp tubes 12 are...

Page 5: ...ngage ment or disengagement of the brake NOTE Airflex recommends guarding the brake application The guard should cover the face and the entire outer diameter of the unit 2 1 Preparation 2 1 1 Figure 1...

Page 6: ...e brake 2 2 1 Ensure the shaft is free of nicks or burrs and the ket fits properly in the shaft and gear Tap the key into the shaft keyway 2 2 2 Apply a light coat of anti seizing compound to the shaf...

Page 7: ...ust be made with flexible hose 2 3 1 6 The DBB brake does not require lubricated air however the solenoid valve may Consult the valve manufacturer 2 3 1 7 A pressure switch should be located in the ai...

Page 8: ...atic and electrical control interlocks should be periodically checked for correct settings and operation 3 3 5 Inspect for need for wear adjustment Refer to Section 4 2 4 0 MAINTENANCE Prior to perfor...

Page 9: ...e in form of circular grooves on iron surface Reaction Holes Maximum wear is 031 in 80 mm Wear will be in the form of elongation of the holes Original hole diameter is 1 343 34 11mm 12 Clamp Tube Reac...

Page 10: ...fer to section 4 5 for further dis assembly procedures 4 2 10 See section 4 4 for cylinder seal replacement 4 2 11 Inspect the clamp tubes springs 22 and release springs 34 and compare to the limits i...

Page 11: ...pposite friction disc Manual setting of the rivets using a punch very frequently results in splitting of the clinched end of the rivet When this occurs the rivet will ultimately fail in service due to...

Page 12: ...damaging the seal lips 4 4 7 Attach the cylinder to the pressure plate with the screws washers and spacer tubes removed in 4 4 1 Use Loctite Locquic Primer Grade T to clean and prepare the screw thre...

Page 13: ...05 require replacement See figure 12 4 6 3 Heat up area around bushing to release Loctite and drive old bushing s out 4 6 4 Clean out bores and remove old Loctite 4 6 5 Apply Loctite RC601 635 or 680...

Page 14: ...locknuts for use only when replacing friction discs See Figure 14 NOTE The socket size for locknuts 18 is 1 1 16 x 4 deep 4 7 9 While Supporting the weight of the cylin der spring housing pressure pl...

Page 15: ...N Handling mixing recoat drying times and ap plications must be in strict accordance with instructions in manufacturers literature Within 8 hours after the surface is cleaned and when dry apply one co...

Page 16: ...g 16 308137 12 308137 23 Polypak Seal 2 000402x0022 2 000402x0022 24 Warning Decal 1 203627 1 203627 25 Name Plate 1 307640 1 307640 26 Drive Screw 8 000153x0644 8 000153x0644 27 Spacer Tube 12 308201...

Page 17: ...ate May 1997 Revision Date Change 1 DEC 97 Complete restructuring 20 JAN 98 ADD friction disc and ring gear P N s to 6 0 8 0 REVISIONS DBB8104 PDFformat 15 Copyright Eaton Corp 1998 All rights reserve...

Page 18: ...t exists Eaton shall thereupon correct any defect at its option either by repairing any defective part or parts or by making available at Eaton s plant a repaired or replacement part This warranty doe...

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