1993/05/17 Caterpillar

New Radiator Tie Bars Resist Cracking {1353,1350}

Usage:

D25D (1HK),
D30D (3AJ, 1PK),
D350D (9RF),
D40D (2JJ),
D400D (8TF, 4EJ) Articulated Trucks

Reference: Special Instruction, SEHS9279, "Installation Of New Radiator Mountings ".

Description of Change: A new radiator tie bar mounting arrangement is being used. The new arrangement has a ball joint to help prevent fatigue cracks.

Adaptable To: The new radiator tie bar mounting arrangement can be installed on the trucks in the field with some modification. Some early trucks may need the radiator mountings given in the Reference.

Use the methods that follow to install the new radiator tie bars on machines in the field.

D25D, D30D, D350D Articulated Trucks

1. Remove the radiator grill and fuel tank using the method given in the Service Manual.

2. Install the parts shown in Chart and Illustration 1.

Location of parts required for D25D, D30D, D350D Articulated Trucks

D40D, D400D Articulated Trucks

1. Remove the radiator grill.

2. Modify the radiator shroud by removing material as shown in Illustration 2.

Radiator shroud modification. Dimension (A) 15.0 mm (.59 in).

3. Install the parts shown in Chart and Illustration 3.

Location of parts required for D40D, D400D Articulated Trucks.

Caterpillar Information System:

1993/05/17 Air Conditioner System Refrigerant Refill Capacity {7320,7300}

1993/05/17 Door Insulation Retention Method Is Improved {7308,7300}

1993/05/17 Relief Valve Tolerance Has Been Changed {5050}

1993/05/17 Steering Hoses With O-ring Face Seal Fittings Available {4304,4300}

1993/05/17 Deflector Plates Prevent Mudflaps From Coming In Contact With The Tires {4220,7252,4200}

1993/05/17 Holes Drilled Inside The Transfer Gearbox Case Can Improve Oil Flow {3106,3100}

1993/05/17 New Seals Assist In Preventing Cooling Oil Transfer From Brake To Wheel Oil {4251}

1993/05/17 Optional Bronze Thrust Disc Available {3160}

1993/05/17 Air Horn Group Now Standard To Meet Overseas Specifications {7402}

1993/05/10 New Oil Filter Base Supports Help Prevent Incorrect Oil Filter Base Installation{1306}

1993/05/10 New Gas Springs For Engine Enclosure Doors{5486,7263}

1993/05/10 New Mount Bracket Minimizes Contaminants Into Key Start Switch{1553}

1993/05/17 Battery Isolation Switch Has Been Moved To Improve Access {1411,1400}

1993/05/17 Hoist Cylinder Hoses With O-ring Face Seal Fittings Available {5057,5050}

1993/05/17 Cab Air Intake Sealing Can Be Improved {7342,7304,7300}

1993/05/17 Brake Fluid Reservoir Has Been Moved To Prevent Overheating {4291,4250}

1993/05/17 Method For Bleeding And Charging The Rear Suspension Has Been Changed {7200}

1993/05/17 Injection Pump Kits (Gasket/Solenoid) Available From Parts Service {1250,1251}

1993/05/17 New Fuel Injection Lines, Clamps, And Brackets Used In Fuel Injection Lines Groups {1252}

1993/05/24 New Snap-In Type Rod Wiper Replacement For Truck Suspension Groups And Hoist Cylinder Groups{7201,7213}

1993/05/24 Remote Grease Fittings Added To Steering Cylinders{4303,4300}

1993/05/24 New Turbocharger Guard Has Longer Service Life{1073,1050}

1993/05/24 Contour Series Operator's Seats Now Have Service Parts{7312}

1993/05/31 New Torque Converter Yoke Seal Improves Service Life{3105}