Usage:
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May 2002 |
HEAVY DUTY TRACK ROLLER IMPROVEMENTS FOR 320C, 322C AND 325C
Improved Heavy Duty Track Roller Groups are available in the parts system for the 320C, 322C and 325C. The Heavy Duty Track Rollers will help solve leakage problems customers have experienced in severe applications. Features and Benefits of new roller groups.
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Features |
Benefits |
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? (1) Two Solid Pins to Retain End Collars |
? Controls endplay that results from side loading |
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? (2) Increased Shell Bore Hardness (Rc48) |
? More resistance to deformation from high loads |
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? (3) Shell Geometry Provides Protection for Center Weld and End Collars |
? Prevents roller damage from track derailment |
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? (4) Cast Duo-Cone Seals |
? Keeps seal in position and prevents corrosion and face galling |
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? (5) Low Temperature Toric Seals |
? Response to ?35 deg C (-31 deg F) |
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? (6) Higher Strength Shaft Material |
? Greater load carrying capacity |
Adaptability
New roller groups cancel and replace the former roller groups at the group level. New roller groups are adaptable on former model 320, 322 and 325 Excavators.
Servicing
Since the former Heavy Duty and new Heavy Duty individual components are not interchangeable, they will be serviced as separate parts.
Part Number Information
Refer to Attachment I for new and former part number information.
Custom Track Service (CTS)
The changes to these track rollers do not affect the wear charts. When performing Custom Track Service (CTS), refer to the current wear charts in the 14th Edition of the CTS Handbook (Media Number PEK9400-02).
Summary
The Heavy Duty track roller improvements on the 320, 322 and 325 will help customers solve leakage problems in severe applications. The improved track rollers will give customers the satisfaction they are looking for in Caterpillar products.
LASchroeder TCRobertson
Undercarriage Marketing Division Undercarriage Marketing Division
Parts and Service Marketing Parts and Service Marketing
CV 4111 ? Tel (309) 675-3977 CV 4111 ? Tel (309) 675-7879
320C HEAVY DUTY TRACK ROLLERS
New Former
Qty Part No. Part No.
Single Flange (SF) 206-1265 152-4123
Components of Group
Roller Shell 1 209-3313 152-4137
Shaft 1 209-3312 8E-5035
Seal ? Duo-Cone Group 2 206-9211 9W-2142
Toric Ring* 2 162-2168 8H-2265
Seal ? Shaft O-Ring 2 7F-8268 7F-8268
Plug 1 9W-2146 6Y-0473
Mounting Hardware**
* Component of preceding assembly or group; quantity shown per assembly or group.
** Not included in roller group; quantity shown is required to mount each roller group.
322C HEAVY DUTY TRACK ROLLERS
New
Qty Part No.
Single Flange (SF) 197-4161
Components of Group
Roller Shell 1 205-3594
Bearing* 2 6I-9399
Shaft 1 200-6432
End Collar 2 158-8086
Pin - Dowel 2 159-9526
Seal ? Duo-Cone Group 2 206-9212
Toric Ring* 2 171-5713
Seal ? Shaft O-Ring 2 8F-6711
Plug 1 9W-2146
Mounting Hardware**
Bolt 4 7X-2565
Washer 4 8T-4123
* Component of preceding assembly or group; quantity shown per assembly or group.
** Not included in roller group; quantity shown is required to mount each roller group.
325C HEAVY DUTY TRACK ROLLERS
New Former
Qty Part No. Part No.
Single Flange (SF) 206-1264 152-4125
Components of Group
Roller Shell 1 206-9257 152-4138
Shaft 1 206-9260 158-8089
End Collar 2 158-8086 158-8086
Pin - Dowel 2 159-9526 159-9526
Seal ? Duo-Cone Group 2 206-9212 9W-2201
Toric Ring* 2 171-5713 6H-1309
Seal ? Shaft O-Ring 2 8F-6711 8F-6711
Plug 1 9W-2146 6Y-0473
Mounting Hardware**
* Component of preceding assembly or group; quantity shown per assembly or group.
** Not included in roller group; quantity shown is required to mount each roller group.
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