1994/12/12 Caterpillar

Injector Solenoids on Engines Equipped with EUI Are Not Polarity Sensitive{1259}

Usage:

D11N (4HK) Track Type Tractors;
776C (2TK),
784B (5RK) Tractors;
777C (4XJ),
785B (6HK),
789B (7EK),
793B (1HL) Trucks;
5130 (7TJ, 5ZL),
5230 (7LL) Excavators

SUPPLEMENT: 08/07/95

Service Magazine; December 12, 1994; Page 7; "Injector Solenoids On Engines Equipped With EUI Are Not Polarity Sensitive"

Disregard this article. See the article with the same title in this issue.

--------------- END SUPPLEMENT ---------------

The EUI (electronic unit injector) solenoids (4) are not polarity sensitive. This means harness yoke (2) can be assembled onto the solenoid in any position, either side up. The rotational location of solenoid studs (3) can vary on each solenoid, therefore if the studs do not line up with the slots in the harness yoke, turn the harness yoke over. The wiring harness yoke is designed to attach to the solenoid regardless of solenoid stud position.

Connecting wiring harness to electronic unit injector solenoid. Captive nut holder (1). Harness yoke (2). Terminal stud (3). Solenoid (4).

Caterpillar Information System:

1994/12/12 Caterpillar Hose Press And Tool Usage{5057,0684}

1994/12/12 Procedure To Bleed And Charge The Rear Suspension{7213}

1994/12/12 Procedure For Measuring Oscillating Hitch Wear {7113,7114}

1994/12/05 Dry Start Priming Procedure for 3500 Machine Engines with Electronic Unit Injection (EUI){1250,1258}

1994/12/05 Flexible Hose Assembly Replaces Tube Assemblies In Turbocharger Water Lines Groups{1380}

1994/12/05 Hardened Spacers Used In Steer Pivot{4300,7051,7066}

1994/12/05 New Muffler Bracket Improves Muffler Support{1062}

1994/12/05 New Differential Group Housing Used In The Output Gear Group{3159}

1994/11/28 Be Sure Correct Piston Cooling Jets Are Installed{1331}

1994/11/28 Improved Spring Used In Belt Tightener Groups{1358}

1994/11/28 Screened Filter For Implement Motor Case Drain Return Line{5720,4351,4921}

1994/11/28 New Front Axle Shims Make Adjustment Easier{3250}

1994/12/12 Serviceable Parts For Custom Option Engine Prelube Group{1319}

1994/12/12 New Exhaust Bypass Valve (Wastegate) Used In Exhaust Bypass Group{1057}

1994/12/12 New Cylinder Blocks Made From Stronger Alloy{1201}

1994/12/19 New Roller Bearings Used In The 8E-9034 Transmission Planetary Group To Improve Service Life {3160}

1994/12/19 Small Cracks Around The Holes In The Front Wheels Can Be Repaired By Welding {4201}

1994/12/19 New Screen Assembly Prevents Large Debris From Transferring Into Differential Compartment {4051,3258}

1994/12/19 Primary Pressure For The Transmission Pressure Control Group Has Been Increased {0374,3150}

1994/12/19 New Filter Used For Screed Burner And Washdown Systems {1274,5642}

1994/12/19 Spacer Plate Is Available To Make Installation Of Permanent Hose Couplings Easier {0684,5057}

1994/12/19 Special Instruction SEHS9734-01 Is Available For Retrofitting R-12 Air Conditioning Systems To R-134a Refrigerant {7320,1809}

1994/12/19 New Connecting Rod Assembly Has Increased Fatigue Strength {1218}

1994/12/19 New Water And Oil Temperature Regulators Available {1330,1355}