New Diaphragm For Brakesaver Control Valve {1159,1155}
Usage:
3406B, 3408, 3408B Truck Engines
Description of Change: A new diaphragm is used in the brakesaver control valve groups on 3406B and 3408B Truck Engines. The new diaphragm has improved resistance to abrasion by changing the weave of the material.
Adaptable To: The new 9Y4811 Diaphragm is a direct replacement for the former 4W7137 Diaphragm, which is canceled. Use of the new diaphragm is effective on 3406B Truck Engines 4MG19930 and 8TC3280 and on 3408B Truck Engines 28V4777.
Caterpillar Information System:
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