4
1.9 Tier 4F Compliance Information
In order to comply with tier 4F emissions regulations, the exhaust system in the
VT-70 High Output is equipped with a Diesel Oxidation Catalyst (DOC) that pas-
sively treats the exhaust gasses as they flow through the system. It does not
require operator intervention of any kind. The emissions system on the VT-70
High Output is designed to be tier 4F compliant for the life of the machine.
The tier 4F engine and emissions system in the VT-70 High Output requires Ultra
Low Sulfur Diesel (ULSD) fuel to operate properly. There are special considera-
tions regarding the use and handling of ultra low sulfur diesel fuel. Information on
these topics can be found on the following pages: 18-19 (section 2.10 - Fuel
Handling Precautions) and 34 (section 3.11 - Fluid Specifications).
The VT-70 High Output is also equipped with self-diagnostic features common to
modern diesel engines. Information regarding self-diagnostics can be found on
the following pages: 37 (section 4.1 -
NOTICE
message), 46-48 (section 4.11-1
- main menu and active faults - accessing fault information through the operator
interface).
1 INTRODUCTION
VT-70 High Output US ISO O&M
0404-853 2019-09
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