HINO S-series Truck Exhaust System Maintain Guide

Here is the illustration show the guide on how to perform maintain exhaust system for HINO S-series trucks.

 

Exhaust System
The exhaust system has a crucial role in meeting 2010 EPA regulations. In order to maintain compliance with the 2010 EPA emissions levels the Diesel Particulate Filter (DPF) and SCR package must not be moved. The distance between the engine exhaust manifold down pipe and Diesel Particulate Filter (DPF) / Selective Catalytic Reduction Package (SCR) must be maintained and the pressure in the system must be sustained at a constant level. Due to increased temperatures in the exhaust system during the regeneration cycle and the heat stress caused by these temperatures, body builders should closely evaluate the placement of equipment and provide protection to these added components as needed.

 

 

Preparations:

Nexiq USB Link

2024.04 HINO Diagnostic Explorer DX3/DX2 Diagnostic Software Free Download

HINO Trucks EPC Electronic Parts Catalog 2018 2016 Free Download

 

Diesel Particulate Filter (DPF) and Selective Catalytic Reduction (SCR) Restrictions
1 The DPF/SCR has exhaust pressure pipes and temperature sensors. Care must be taken when a body is installed so as to not damage pipe sensors.
2 The DPF/SCR should be free from impact or vibration during body installation.
3 The DPF/SCR must have enough room for disassembly of the unit for service and cleaning.
4 The DPF/SCR switch in the cab should not be removed or disabled. No modification or relocation of the DPF/SCR unit, pressure pipes, and sensor is permitted.

Exhaust System Modification
Modification of the exhaust system should be avoided. If modifications are absolutely necessary, the following points should be maintained.
1 Maintain the clearance specified in the table below between all parts of the exhaust system and any fuel lines, brake lines, brake hoses, electrical cables, etc. The exhaust outlet should not point toward any of these parts.

2 If a tool box is installed, it should preferably be made from steel. If a wooden tool box is installed, at least 7.8 inches of clearance should be maintained between the tool box and any parts of the exhaust system.
3 If the exhaust system is modified, it is the responsibility of those making the modification to ensure that the noise level meets appropriate standards.
4 If the exhaust system is modified it is the responsibility of those making the modification to ensure that the emission levels meet appropriate standards.
5 Exhaust system component temperatures are sufficient to ignite flammable materials; efforts should be made to prevent flammable materials from interacting with the exhaust system.

 

DPF/SCR Heat Shield Removal
The exhaust external heat shield does not impact vehicle emissions or emissions system durability. This shield can be removed or modified in order to facilitate body or equipment mounting, but the completed vehicle manufacturer should ensure that, when completed, the exhaust will be adequately shielded to prevent unintentional contact with hot exhaust components, and that heat transfer to body components is not so high as to present safety or durability risks. Detailed information on removal of the heat shield can be found in the Hino service manual.

 

S-Series No Modification Zones
The DPF/SCR unit CANNOT be modified or moved. The DEF tank and pump CANNOT be modified or removed. DEF lines and coolant lines CANNOT be.modified or rerouted.