2015/01/23 An Improved Suction Fan Group Is Now Used on Certain 620K and 620H Wheel Tractor-Scrapers {1356} Caterpillar


An Improved Suction Fan Group Is Now Used on Certain 620K and 620H Wheel Tractor-Scrapers {1356}
`
Wheel Tractor-Scraper:
621H (S/N: DBK1-UP; HKK1-UP; NYY1-UP; EAZ1-UP)
621K (S/N: WTL1-UP; WTP1-UP)
623H (S/N: EJD1-UP; DBF1-UP)
623K (S/N: WTM1-UP)
627H (S/N: LCT1-UP; DBW1-UP)
627K (S/N: WTN1-UP)
Service Magazine SEPD1906, December 2014, "An Improved Suction Fan Group Is Now Used on Certain 620K and 620H Wheel Tractor-Scrapers". Disregard this article. See the replacement article that follows.

Description of Change: A new adapter is now used in the suction fan group on the machines listed above. The new adapter is made of harder material and will allow for full engagement of the nut. Also, the torque value for the nut is increased to provide better retention.

Adaptable To:

Table 1
Sales Model     Adaptable to Machines     Effective in production with Machines    
621H     S/N:DBK1-UP     -    
S/N:EAZ1-125 -    
S/N:HKK1-139 -    
S/N:NYY1-129 -    
621K     S/N:WTL1-101     -    
S/N:WTP1-104 S/N:WTP105-106    
623H     S/N:DBF1-UP     -    
S/N:EJD1-105 -    
623K     S/N:WTM1-105     S/N:WTM106    
627H     S/N:DBW1-348     -    
S/N:LCT1-115 -    
627K     S/N:WTN1-103     -    

Table 2
Required Parts List    
Item     Quantity     Part Number     Description    
1     1     459-2579     Adapter    
2     1     9X-8257     Washer    
3     1     8T-3980     Nut    

  1. Remove six 8T-4195 Bolts, six 8T-4121 Hard Washer, and 385-5583 Fan Spider As. Save all parts.

  1. Remove 3E-8000 Jam Nut and 386-2460 Adapter. Discard all parts.



    Illustration 1g03716968

  1. Install 385-5583 Fan Spider As using new adapter (1), washer (2), nut (3), six 8T-4195 Bolts, and six 8T-4121 Hard Washers that were saved in Step 1. Tighten 8T-3980 Nut to a torque of 240 N·m (177 lb ft).

    Note: Before assembly, apply blue Loctite on the threads of nut (2). Also clean fan shaft and adapter surface to ensure that, the surfaces are free of dirt and oil.

Information System:

2014/08/29 New Power Actuator Group for the Hood Tilt Group Is Now Used on Certain Wheel Loaders {1427, 7251, 7275}
906K, 906M, 907K, 907M, 908K and 908M Compact Wheel Loaders Electrohydraulic System CAN Data Link - Test
906K, 906M, 907K, 907M, 908K and 908M Compact Wheel Loaders Electrohydraulic System General Information
627K Wheel Tractor-Scraper Sound Information and Vibration Information
621K Wheel Tractor-Scraper Sound Information and Vibration Information
826K Landfill Compactor, 825K Soil Compactor and 824K Wheel Dozer Engine Supplement Hood - Remove and Install
906K, 906M, 907K, 907M, 908K and 908M Compact Wheel Loaders Electrohydraulic System Output Components
906K, 906M, 907K, 907M, 908K and 908M Compact Wheel Loaders Electrohydraulic System Input Components
906K, 906M, 907K, 907M, 908K and 908M Compact Wheel Loaders Electrohydraulic System Electronic Control Module
3500E EPA Tier 4 Final and IMO-II/III Switchable Marine Engines Solenoid Valve - Test - Engine
906K, 906M, 907K, 907M, 908K and 908M Compact Wheel Loaders Electrohydraulic System Features
826K Landfill Compactor, 825K Soil Compactor and 824K Wheel Dozer Engine Supplement Muffler - Remove and Install
906K, 906M, 907K, 907M, 908K and 908M Compact Wheel Loaders Electrohydraulic System Electrical Power Supply - Test
2014/08/25 An Improved Cab Door Gas Spring and Door Stop Is Now Used on Certain Medium Wheel Loader Machines Equipped with Front Window Guards {7165, 7182, 7308, 7310}
826K Landfill Compactor, 825K Soil Compactor and 824K Wheel Dozer Engine Supplement Muffler - Remove and Install
906K, 906M, 907K, 907M, 908K and 908M Compact Wheel Loaders Electrohydraulic System Operator Control Switch (Switch to Ground) - Test
C280 Marine Engines Coolant Contains Fuel
906K, 906M, 907K, 907M, 908K and 908M Compact Wheel Loaders Electrohydraulic System Sensor Signal (Analog, Active) - Test
906K, 906M, 907K, 907M, 908K and 908M Compact Wheel Loaders Electrohydraulic System Sensor Signal (Analog, Passive) - Test
D8T Track-Type Tractor Power Train Equalizer Bar - Remove and Install
950 GC Wheel Loader Engine Supplement Muffler - Remove and Install
D6N Track-Type Tractor Case Pressure (Steering Pump) - Check
906K, 906M, 907K, 907M, 908K and 908M Compact Wheel Loaders Electrohydraulic System Sensor Signal (PWM) - Test
826K Landfill Compactor, 825K Soil Compactor and 824K Wheel Dozer Engine Supplement Refrigerant Compressor - Remove and Install - Engine in Chassis