Mack ASET-AC (CEGR) Engine Manual

Manuals: Service Manual
GROUP 000 — GENERAL DATA
GROUP 100 — CHASSIS
GROUP 200 — ENGINE
GROUP 300 — CLUTCH, TRANSMISSION, TRANSFER CASE AND PTO
GROUP 400 — STEERING, AXLES, WHEELS AND TIRES, DRIVELINE
GROUP 500 — BRAKES, AUXILIARY SYSTEMS
GROUP 600 — CAB, TRUCK BODY
GROUP 700 — ELECTRICAL

This publication is intended to provide technicians with a working knowledge of the ASET AC diesel engine with cooled exhaust gas recirculation. MACK offers a similar engine to the AC which is more suited to the vocational applications called the AI/AMI. The AI/AMI engine is an internal exhaust gas recirculation design

engine. For service and overhaul procedures for the ASET AI/AMI engine, refer to the 5-110 ASET AI/AMI Engines Service Manual. ASET is an acronym meaning Application
Specific Engine Technology.

The ASET AC engine design is based on the E-Tech left-side redesign (LSR) with its plate-type oil cooler and oil filter mounting arrangement. A redesigned Centri-Max ULTRA, and later ULTRA PLUS, centrifugal oil filter assembly and cover housing with an integral oil fill tube, is incorporated on all AC engines.

The ASET AC utilizes a new EECU with greater capacity which is relocated to the front left-side of the inlet manifold. The increased capacity of the EECU requires the addition of a cooling plate to help dissipate heat. The AC design also provides for cooling of the exhaust gases being recirculated through the combustion chambers