Section 3. Parts List; Explanation Of Parts List Arrangement; Symbols And Abbreviations - Hobart 6921 Series Operation And Maintenance Manual

OM-2040 / Operation and Maintenance Manual
90D20 / Generator Sets

Section 3. Parts List

1. Explanation of Parts List Arrangement

The parts list is arranged so that the illustration will appear on a lefthand page and the applicable parts
list will appear on the opposite righthand page. Unless the list is unusually long, the user will be able to
look at the illustration and read the parts list without turning a page.

2. Symbols and Abbreviations

The following is a list of symbols and abbreviations used in the parts list.
* - item not illustrated
A, or AMP - ampere
AC - alternating current
AR - as required
DC - direct current
Fig. - Figure
hd. - head
hex - hexagon
Hz - Hertz (cycles-per-second)
I.D. - inside diameter
IN - inch
kVA - kilovolt-ampere
uF - microfarad
No. - number
NHA - next higher assembly
OM - Owners Manual
PRV - peak reverse voltage
PSI - pounds per square inch
Ref - reference (the item has been listed previously)
T-R - transformer-rectifier
V - volt (when used as a prefix to a five-digit number, indicates vendor code)
NOTE: An item which does not reflect an index number is an assembly which is not illustrated in its
assembled state, or it is similar (right-hand, left-hand, top, etc.) to an item which is illustrated.
February 28/94
Revised
Chapter 4-3
Page 1