Alternator Service Procedures - Manual Revision: Overview
89Ford27LIGHT TRUCK SHOP MANUAL-SECTION 31-44-ALTERNATOR-165 AMPERE-LEECE NEVILLE-RECOMMENDED SERVICE PROCEDURES
Article No. 89-18A-15
LIGHT TRUCK: 1988-89 ECONOLINE, F-150, F-250, F-350
ISSUE: Section 31-44, Alternator--165 Ampere--Leece Neville, has been prepared for recommended service procedures on heavy duty alternators used for 14 volt charging systems on ambulance applications. This section was not published in the 1988 and 1989 Light Truck Shop Manuals.
ACTION: If service is required, refer to the pages following this TSB article for the complete new section.
OTHER APPLICABLE ARTICLES: None
WARRANTY STATUS: INFORMATION ONLY
OASIS CODES: 2800
31-44-1 Alternator-165 Ampere-Leece Neville 31-44-1
SECTION 31-44 Alternator-165 Ampere-Leece Neville
SUBJECT PAGE
ADJUSTMENTS 31-44-1
DESCRIPTION AND OPERATION 31-44-1
DIAGNOSIS AND TESTING
Bench Tests 31-44-2
On Vehicle Tests 31-44-1
DISASSEMBLY AND ASSEMBLY
Alternator 31-44-6
SUBJECT PAGE
REMOVAL AND INSTALLATION
Alternator 31-44-5
Regulator 31-44-5
SPECIAL SERVICE TOOLS 31-44-9
SPECIFICATIONS 31-44-9
VEHICLE APPLICATION 31-44-1
VEHICLE APPLICATION Light Truck Vehicles Equipped With 165 Ampere Alternators.
DESCRIPTION AND OPERATION
The Leece Neville 165 ampere alternator is a selfcurrent limiting unit with a fully adjustable solid state regulator. The negative output terminal is internally grounded for negative ground systems. The alternator features sealed ball bearings, with slip rings and brushes that are in a sealed housing mounted on the slip ring end housing. Six silicon diodes mounted in heat sinks convert alternating current from the delta wound stator into direct current. A capacitor connected between the heat sinks assists in suppressing transient voltage spikes which could possibly damage the diodes. The brushes and voltage regulator are located in a waterproof housing that may be removed for replacement or inspection without disassembling the alternator.
ADJUSTMENTS
Before performing any tests or adjustments on the alternator, refer to Section 27-06, Belt Accessory Drive Service for belt inspection and adjustment procedures. Refer to Section 31-02, Charging System General Service for battery inspection and state of charge condition.