Component Descriptions (Theory Of Operation); Maxxforce; And 13 - Navistar MaxxForce DT Diagnostic Manual

DIAGNOSTIC MANUAL

COMPONENT DESCRIPTIONS (THEORY OF OPERATION)

12.1. MAXXFORCE

®
1. Electrical connector
2. Turbocharger 1 Wastegate Control
(TC1WC) port
3. Vehicle air supply port
4. Exhaust Back Pressure Valve
(EBPV) port
Figure 35 ACV Assembly (MaxxForce® 11 and 13 Engines)
Air Control Valve (ACV) Assembly
The Air Control Valve (ACV) assembly contains the Low Pressure (LP) turbocharger wastegate control port,
High Pressure (HP) turbocharger wastegate control port, the Exhaust Back Pressure Valve (EBPV) control
port, and the Turbocharger 1 Turbine Outlet Pressure (TC1TOP) port. Although these components are integral
to the ACV, each circuit is controlled by the ECM. The ACV controls compressed air for each control valve.
The air supply port is connected to the vehicle's air system.
Proper operation of the ACV is critical in preventing an aftertreatment concern. When an ACV concern is
present, it will cause low engine performance and directly effect aftertreatment system operation.
138

11 AND 13

https://www.truck-manuals.net/
5. Turbocharger 1 Turbine Outlet
Pressure (TC1TOP) sensor port
6. Turbocharger 2 Wastegate Control
(TC2WC) port