345B EXCAVATOR GREASE LUBRICATED LINK ASSEMBLIES Caterpillar


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345B EXCAVATOR GREASE LUBRICATED LINK ASSEMBLIES [PELJ0192]
UNDERCARRIAGE
TRACK GP
345B EXCAVATOR GREASE LUBRICATED LINK ASSEMBLIES
 Information Release Memo

UC03-07 

 
  AVS?

Undercarriage  

 

June 2003    

 
345B EXCAVATOR GREASE LUBRIAVSED LINK ASSEMBLIES

Grease lubricated track (GLT) link assemblies are now available in the parts system for 345B, 345B L, 345B Series II, & 345B LC Series II.  Grease lubricated tracks will increase the durability of the link assembly by decreasing the wear of the track pin and internal wear of the bushing.  The new GLT link assemblies are interchangeable with the sealed link assemblies.  The part numbers for the new grease lubricated track are listed in Attachment I.

The GLT link assemblies also have a 1.5 mm larger bushing diameter for additional external bushing wear life.  These improvements will provide an additional 2000 hours or more of undercarriage life for most Hydraulic Excavator applications.  The current sprocket segment can be used with the larger bushing diameter.  Expect grease retention to be longer than for other GLT track due to the use of rigid track seals from sealed and lubricated track.

 

 

 

 

 

 

 

 

 

                                                        345B GLT Cross Section


 

Features

 

Benefits

  • Internally greased pin and bushing with seal
  • Improved replacement for sealed link assemblies.  Minimum 25% increase in internal wear life (less pin and bushing wear).

 

  • Additional 2000 SMR before internal wear or evidence of lubricant loss.

 

  • Reduced undercarriage noise.
  • Reduced potential for frozen track joints.

 

  • More usable horsepower because of less internal friction.

 

  • Rigid Track Seal Assembly

 

  • Prevents debris from entering sealing system.
  • Retains grease between pin and bushing.

 

  • Larger Bushing O.D. (1.5 mm)

 

  • Minimum of 20% increase in external bushing wear life.

 

  • Greased pin and larger bushing combined

 

  • Improves balance in component wear life.
  • Extends undercarriage system life by 25-30%.
  • Improved sprocket wear because system stays matched longer.

 

  • Master Pin Assembly

 

  • Allows grease to be applied after assembly to resist pin walking.

 

Adaptability

The new link assemblies are adaptable to all 345B & 345B Series II Excavator link assemblies using 24 mm bolt hardware.  The track links and track pins are common components with the sealed link assembly.

This new link assembly is not available as a factory attachment on new 345 Excavators.  The previous Sealed Track will continue to be available from the parts department along with the Grease Lubricated Track.

Servicing

This new GLT track allows the master joint to be greased after the link assembly as been installed on the machine. The purpose is to prevent grease from contacting the press-fit area between the link and the bushing to minimize pin walking. A cross section of the new ?Pin Assembly? is shown below. When installing the track, reference Special Instructions (REHS1647), May 2003, for steps to install and lubricate the master joint.

 

                                                                                                Master Pin Assembly

When performing service on grease lubricated track link assemblies (turning pins and bushings, replacing components) refer to Undercarriage Reconditioning Bulletin (SEBF8598).   

Custom Track Service (CTS)

When performing CTS on 345B machines, refer to the 14th Edition of the CTS handbook (Media Number PEKP9400-02).  See wear chart on Attachment II for measuring external bushing wear with the increased bushing diameter.

Summary

Grease lubricated link assemblies offer a significant wear life and cost/hour advantage over comparable sealed link assemblies.

 

   

 

 

 

Amy Mathai                                                                 TCRobertson  

Undercarriage Marketing                                              Undercarriage Marketing

CV4111 ? (309) 675-3977                                          CV4111 ? (309) 675-7879

Mathai_Amy_M@cat.com                                           Robertson_Thomas_C@cat.com


 

345B L, 345B LC Series II Link Assembly

 

 

Qty.

Part Number

Link Assembly - 52 Section

2

231-0841

Components of Link Assembly

      Track Link RH

52

209-6383

 

      Track Link LH

52

209-6384

 

51

8E-4272

      Master Pin Assembly

1

231-8888

      Bushing

51

227-3029

      Master Bushing

1

233-1634

      Seal (Master Joint)

4

8M-6239

      Seal Assembly (Rigid)

102

9W-6298

      Thrust Ring

102

3P-0623

      Plug

1

6Y-0473

      Spacer

2

8M-6238

      Lubricant (Cartridge)*

1

161-9203

 

Track Hardware*

 

 

      Bolt

204

150-4741

      Nut

204

150-4742

         

*Not part of Link Assembly; required to assemble track group

 

 

345B, 345B Series II Link Assembly

 

 

Qty.

Part Number

Link Assembly - 49 Section

2

231-0842

Components of Link Assembly

      Track Link RH

49

209-6383

 

      Track Link LH

49

209-6384

 

48

8E-4272

      Master Pin Assembly

1

231-8888

      Bushing

48

227-3029

      Master Bushing

1

233-1634

      Seal (Master Joint)

4

8M-6239

      Seal Assembly (Rigid)

96

9W-6298

      Thrust Ring

96

3P-0623

      Plug

1

6Y-0473

      Spacer

2

8M-6238

      Lubricant (Cartridge)*

1

161-9203

 

Track Hardware*

 

 

      Bolt

196

150-4741

      Nut

196

150-4742

         

*Not part of Link Assembly; required to assemble track group


 

 

345B GLT

 

 

 

8.50''    (215.9 mm) Pitch

 

 

 

 

 

 

 

 

Bushings for Grease Lubricated Track

 

 

 

 

 

 

 

 

 

 

 

 

 

Caliper

% Worn

Ultrasonic

 
 

Inches

(mm)

Inches

(mm)

 

2.89

73.4

0

0.48

12.2

 

2.88

73.2

9

0.47

11.9

 

2.87

72.9

18

0.46

11.7

 

2.86

72.6

27

0.45

11.4

 

2.85

72.4

36

0.44

11.2

 

2.84

72.1

45

0.43

10.9

 

2.83

71.9

54

0.42

10.7

 

2.82

71.6

63

0.41

10.4

 

2.81

71.4

72

0.40

10.2

 

2.80

71.1

76

0.39

9.9

 

2.79

70.9

80

0.38

9.7

 

2.78

70.6

84

0.37

9.4

 

2.77

70.4

88

0.36

9.1

 

2.76

70.1

92

0.35

8.9

 

2.75

69.9

96

0.34

8.6

 

2.74

69.6

100

0.33

8.4

 

2.73

69.3

104

0.32

8.1

 

2.72

69.1

108

0.31

7.9

 

2.71

68.8

112

0.30

7.6

 

2.70

68.6

116

0.29

7.4

 

2.69

68.3

120

0.28

7.1

 

 

 
PELJ0192

AVSpare?

?2003 AVSpare

Information System:

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PRODUCT LINE ADDITION: REMAN 3524B HAA ENGINE AVAILABLE FOR 797A & 797B TRUCKS
D11R/N NEW AND IMPROVED MASTER LINKS
UPDATED LINK ASSEMBLY IDENTIFICATION CODE MARKINGS
REMANUFACTURED FUEL INJECTORS FOR C10, C12 AND C15 ON-HIGHWAY TRUCK APPLICATIONS
UNDERCARRIAGE TRACK GROUP LIST
PRODUCT LINE ADDITIONS: REMANUFACTURED 3054 ENGINES FOR BACKHOE LOADER APPLICATIONS
PRODUCT LINE ADDITIONS: REMANUFACTURED 3412 MARINE HEAD
CUSTOM TRACK SERVICE HANDBOOK - 15th EDITION
NEW LINK ASSEMBLY AND TOUGH STEEL SEGMENTS FOR D5G/C TTT, 939C TTL
UPDATED CTS v5.0 COMPUTER PROGRAM
CHANGE IN SHIPPING INSTRUCTIONS FOR REMAN 3500 ENGINE CORES
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APPEARANCE CHANGE ON CAT® REMAN 3126B AND 3126E HEUI® INJECTORS
IDLER GROUPS AVAILABLE FOR TRACK TYPE TRACTORS AND EXCAVATORS
NEW D11R/N POST TURN TRACK SEALS
D10R/N CATERPILLAR® LINK ASSEMBLY WITH IMPROVED SEALABILITY (NACD ONLY)
UPDATE TO REMANUFACTURED 3054 ENGINES SELECTION CHART FOR BACKHOE LOADER APPLICATIONS