Modify Engine Enclosure To Install Door Covers {7273,7263}
Usage:
120H (4MK, 6NM, 9YR, 2AN, 3GR),
135H (3YK) Motor Graders
Reference: Service Magazine, SEPD0398; December 22, 1997; Page 7; "New Screen Covers For Hoods and Side Panel Louvers Now Available To Prevent Debris and Snow Ingress".
Some earlier machines may not have the holes in the right and left side doors of the engine enclosure that are necessary for the installation of door covers. The following illustrations and chart depict the correct locations for the holes to be located for the snaps. The pop rivets and studs need to be installed in each hole. The holes are 3.4 mm (.13 in) diameter.
Illustration 1.
Hole Locations for Right Hand Side of Engine Enclosure.
Illustration 2.
Hole Locations for Left Hand Side of Engine Enclosure.
Caterpillar Information System:
1998/04/06 Improved Adjustment Procedure For Steering Console Cylinder Eliminates Steering Console Drift {5258}
1998/04/06 Circle Assembly Reinforcement For Severe Applications {6154,6157}
1998/04/06 Supplement For Tandem Housing Assembly {4062,4064,3007}
1998/04/06 Additional Tandem Sight Protection Added {4064}
1998/04/06 Parts Service For Replacement Pedal And Tread {3059}
1998/04/06 Improved Alternator Groups Now Available {1405}
1998/03/30 Use 136-3642 Crimp Tool Group For 4C-9900 And 6V-4900 Presses {5057}
1998/03/30 Use 1U-6189 Lamp Tool For Removal And Installation Of Small Control Panel Bulbs {1400,0709}
1998/03/30 Stronger Injector Hold Down Bolt Used In Fuel Injection Pump Groups {1290}
1998/03/30 Use Measuring Tools For Crimp Diameter {0700}
1998/03/30 Use 137-2700 Bore Welding Group (110V), 138-8215 Bore Welding Group (110V With Auto-Skip), 138-8212 Bore Welding Group (220V) And 138-8213 Bore Welding Group (220V With Auto-Skip) For Building Up Worn Or Damaged Bores {0672}
1998/03/30 Use 9U-6803 Tester For Hydraulic Cylinders {7562}
1998/04/06 Proper Communication Radio Installation Reduces Interference With Machine Electronics {1400}
1998/04/06 Access Hole Dimensions To Measure Brake Lining Pad Thickness {4254,4256}
1998/04/06 New Custom Product Support Literature Is Available For 793C Trucks Equipped With 3Z-6422 Hood Conversion Group (Factory Install) {0374,7251}
1998/04/06 Improved Material Deflector For Primary Conveyor Is Available {6621}
1998/04/13 New Transmission Input Hose Design Increases Service Life {3154}
1998/04/13 New Gears Used To Improve Service Life {4050}
1998/04/13 Special Instruction; REHS0078-01; "Retrofit Procedure For Spring Operated Exhaust Diverter" On 777, 777B And 777C Off-Highway Trucks Is Available {1061}
1998/04/13 Increased Capacity Air Compressor For Off-Highway Trucks {1803}
1998/04/13 Updated Wall Chart; SENR6389-01; "785B Final Drive Group Straight Bearing Assembly Wall Chart" For 785B Off-Highway Truck wheel Stations, Is Available {4208,4051}
1998/04/13 Updated Wall Chart; RENR1978; "785B Final Drive Group Tapered Bearing Assembly Wall Chart" For 785B Off-Highway Truck Wheel Stations, Is Available {4208,4051}
1998/04/13 Updated Wall Chart; SENR5669-01; "789B Final Drive Group Straight Bearing Assembly Wall Chart" For 789B Off-Highway Truck wheel Stations, Is Available {4208,4051}
1998/04/13 Updated Wall Chart; RENR1979; "789B Final Drive Group Tapered Bearing Assembly Wall Chart" For 789B Off-Highway Truck Wheel Stations, Is Available {4208,4051}