Air Cleaner; Exhaust System - Hobart 100D20 Operation And Maintenance Manual With Illustrated Parts List

OM-2032 / Operation and Maintenance Manual
100D20 / Generator Sets

(2) Air Cleaner

The diesel-engine air cleaner (Fig. 5) is a dry-cartridge type. It is equipped with a service
indicator which signals the operator when the cartridge needs changing. A green "cylindrical"
flag (2) is forced upward in a glass enclosed viewing chamber (1) when air pressure within the
air cleaner housing drops below the outside air pressure. As the cartridge becomes loaded with
dirt and air, pressure within the cleaner lessens, the "flag" gradually rises higher in the glass
viewing chamber. When the "flag" reaches the top of the chamber, it locks in that position to
warn the operator that the cartridge must be changed. The "flag" is reset (unlocked) by pushing
the reset button (3) located on the indicator.
NOTE: The service indicator is mounted on the engine control panel and connected to the air cleaner
by a rubber hose.
The indicator flag is visible only when the engine is running or when the flag is locked in
WARNING position.

(3) Exhaust System

The exhaust system consists of a special noise reducing muffler (3, Fig. 6) which is connected
by a rigid pipe (2) to a conventional exhaust manifold (1) . The tail pipe outlet directs exhaust
out the right side of trailer frame. Some specifications provide the muffler as shown below.
Other specifications provide an optional vertical mounting (not shown). Refer to the generator
set identification chart for muffler mounting information.
Chapter 1-1
Page 8
1. Viewing Chamber
2. Indicator "Flag"
3. Reset Button
Air Cleaner and Service
Indicator
Figure 5
March 31/94 Revised