1993/02/22 Caterpillar

New Hydraulic Oil Temperature Switch{7488}

Usage:

205 (3HC, 4DC),
206 (2RC, 3GC),
211 (4EC, 5CC),
212 (3JC, 5DC),
213 (9XB, 3ZC),
214 (9MB, 1KB),
224 (2JC, 5TC),
213B (1EJ),
214B (4CF),
214B FT (9MF),
224B (7WF) Excavators

Description of Change: A new hydraulic oil temperature switch with more accuracy and better service life is used.

Adaptable To: The new 8U8120 Switch is a direct replacement for the former 5W2687 Switch (Cancelled). It is also necessary to install an 8U8124 Wire (ground) and a 5W9277 Terminal when replacing the switch. These changes are effective with 213B (1EJ333), 214B (4CF501), 214B FT (9MF379), 224B (7WF156) Excavators. Use the following procedure to adapt earlier machines for the new switch.

NOTE: Wire group (ground wire) (1) will be attached at various places depending on which machine is being worked on, see the appropriate Illustration.

1. Remove the wire from the 5W2687 Switch and replace the 5W9290 Terminal (eye) with (5W9277) Terminal (3).

2. Replace the 5W2687 Switch with (8U8120) switch assembly (2). Attach the wire from Step 1.

3. Attach ground wire (1) (8U8124 Wire Group).

Illustration 1. Typical Installation For 213B, 214B and 224B Excavators. (1) Wire Group. (2) Switch Assembly. (3) Terminal. (4) Hydraulic Oil Cooler.

Illustration 2. Typical Installation For 205A, 206A, 211A and 212A Excavators. (1) Wire Group. (2) Switch Assembly. (3) CC19p6

Illustration 3. Typical Installation For 213A, 214A and 224A Excavators. (1) Wire Group. (2) Switch Assembly. (3) Terminal. (4) Tool Box.

Caterpillar Information System:

1993/02/15 New Oil Pump Groups Do Not Require Key On Drive Shaft {1304}

1993/02/15 Improved Track Motor Lines {5057}

1993/02/15 Parts For Cooler Bypass Valve Provide Quieter Operation {5071}

1993/02/15 New Hydraulic Tank Cap Improves Main Hydraulic Pump Reliability {1273,5050}

1993/02/15 Procedure To Determine Idler Height {4159}

1993/02/08 Some Remanufactured Engine Information Plates May Contain Incorrect Horsepower And Performance Specifications{7557}

1993/02/08 Skirt Plate On Swing Frame Is Serviceable{7050}

1993/02/08 New Solenoid Valves For Excavators Prevent Water Entry{5479}

1993/02/01 New 9U6101 Lower Pilot Reamer Group Available{0670,1125}

1993/02/01 Installation Of Grease/Dust Seals For Swing Bearings{7063}

1993/01/25 Check Engine Water Pump Impeller Face Clearance If The Engine Experiences Symptoms Of Overheating {1361}

1993/01/25 Unit Injector Tip Seal Deterioration {1290}

1993/02/22 Procedure To Eliminate Possible Upper Stabilizer Struts To Radiator Misalignment{1353}

1993/02/22 Parts Service For Hydraulic Tank Warning Light Switch{5056,7450}

1993/02/22 New Stick Cylinder Assembly With Heat Treated Cap Prevents Bearing Bore Elongation{5458}

1993/02/22 Explanation Of Cold Weather Pump Output Control Function{1900}

1993/02/22 New Piston Assembly With New Rings Used{1214,1215}

1993/02/22 New Voltage Regulators Provide Improved Reliability{1410,1405}

1993/03/01 Improved Fuel Tank Strainer {1273}

1993/03/01 Rubber Belt Track Available {4170,4198}

1993/03/01 New Swing Drive Unit Replaces Swing Motor And Swing Drive {5058,5459}

1993/03/01 Improved Boom And Stick Spools For Leveling Operations {5051,5450,5461}

1993/03/01 Boom Spool Prevents Boom Drift On Cold Starts {5461}

1993/03/01 Proper Tee Orientation Prevents Sluggish Machine Operation {5450,5057}