,
Section
1
-
Introduction
ABOUT
THIS
MANUAL
This manual provides complete service information
for Onan
NHE-NHEL
series recreational vehicle
generator sets, for the experienced serviceperson.
Subjects covered include: troubleshooting, dis-
assembly, repair, reassembly, and adjustments for
engine, generator, and control. The serviceperson
must possess thorough knowledge
of
internal com-
bustion engine principles, and basic knowledge of
electrical fundamentals. Refer to other Onan publica-
tions, such as Electrical/MechanicaI Fundamentals
(932-0408), Onan Generator Training Manual (932-
0404), Operators Manual NHE GenSet (940-0122),
and Installation Manual NHE GenSet (940-0622), for
additional information.
Read all service and procedures completely, observ-
ing all cautions and warnings, before beginning any
repair work. The generator set installation must main-
tain compliance with the applicable recreational veh-
icle codes and standards. The most critical areas of
concern are the exhaust system, fuel system, electri-
cal wiring, compartment construction, and ventila-
tion system. Improper servicing can create an unsafe
installation that might cause serious personal injury
or death,
or
damage to the vehicle or equipment.
<-
MODEL IDENTIFICATION
Always supply the complete Model Number, Spec
Number, and Serial Number as shown on the genera-
tor set nameplate (Figure
1-1)
when contacting an
Onan Dealer
or
Distributor. This information is
necessary to identify your generator set when order-
ing replacement parts.
Always use genuine Onan replacement parts ob-
tained from an authorized Onan Dealer
or
Distribu-
tor.
Universal type replacement parts (usually in-
tended for automotive use) often look similar but
might not perform to Onan specifications. Only
genuine Onan replacement parts are designed and
tested for specific applications to ensure reliable ser-
vice and dependable operation.
The model
number
consists
of
code
segments
which
designate various features
or
options. The following
typical model number is broken down to illustrate:
1
2
3
4
5
6
1.
2.
3.
4.
5.
6.
I
AWARNING
I
Kilowatt rating
Series identification
NHE
-
Gasoline fueled
NHEL
-
LPG fueled
Voltage code
1
-
120 volts
Starting method
R
-
Remote
Factory code for designating modifications,
options,
or
special features.
Specification letter. Advances when the factory
makes production modifications which affect all
models.
AC
Volts
DCV
RPM
Bat.
M-1572
FIGURE
1.1.
ONAN NAMEPLATE
INCORRECT SERVICE
OR
REPLACEMENT OF PARTS CAN RESULT IN
SEVERE
PERSONAL INJURY AND/OR EQUIPMENT DAMAGE. SERVICE
PERSONNEL MUST BE QUALIFIED
TO
PERFORM ELECTRICAL AND/OR
MECHA NlCA
L
SERVICE.
1-1
Redistribution or publication of this document
by any means, is strictly prohibited.
Redistribution or publication of this document
by any means, is strictly prohibited.
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