AIR CONDITIONER AR 4841508 - Caterpillar

(7PR414-Up),
3412E (4CR505-Up) Industrial EnginesDescription of Change: Two new seal kits are available for hydraulic unit injector pump groups. The new seal kit is compatible with the 11 bolt flange on the former hydraulic unit injector pump group. The second new seal kit is compatible with a pump bearing design change.Adaptable To: The former 125-3225 Hydraulic Unit Injector Pump Group (with the nine bolt flange), released for the above HEUI Engines is discontinued. The 126-7235 Seal Kit for the 9 bolt flange pump is available for service. The new 133-1706 Seal Kit is available for the 133-1708 Hydraulic Unit Injector Pump Group (with the 11 bolt flange) in the 3408E (7PR412-413) and 3412E (4CR493-504) HEUI Engines. The 133-1708 Hydraulic Unit Injector Pump Group has been discontinued. The new 138-6256 Seal Kit is available for the 134-9404 Hydraulic Unit Injector Pump Group (with the new bearing design). The 134-9404 Hydraulic Unit Injector Pump Group is available for pump service. The new 138-6256 Seal Kit is effective with the above HEUI Engines.