Nomenclature" Column; Eff" (Effective) Column; Units Per Assembly" Column - Hobart 6921 Series Operation And Maintenance Manual

OM-2040 / Operation and Maintenance Manual
90D20 / Generator Sets
ALL part numbers appearing in this column are Hobart numbers. In all instances where the part
is a purchased item, the vendor's identifying five-digit code and his part number will appear in the
"NOMENCLATURE" column. Vendor parts which are modified by Hobart will be identified as
such in the "NOMENCLATURE" column. In case Hobart does not have an identifying part
number for a purchased part, the "HOBART PART NUMBER" column will reflect "No Number"
and the vendor's number will be shown in the "NOMENCLATURE" column. Parts manufactured
by Hobart reflect no vendor code or part number in the "NOMENCLATURE" column.

(3) "NOMENCLATURE" Column

The item identifying name appears in this column. The indenture method indicates item
relationship. Thus, components of an assembly are listed directly below the assembly and
indented one space. Vendor codes and part numbers for purchased parts are shown in this
column. Hobart modification to vendor items is also noted in thi column.

(4) "EFF" (Effective) Column

This column is used to indicate the applicability of parts to different models of equipment. When
more than one model of equipment is covered by a parts list, there are some parts which are
used on only one model. This column is used for insertion of a code letter "A", "B", etc., to
indicate these parts and to identify the particular model they are used on. Uncoded parts are
usable on all models.
Parts in this manual are coded as follows:
Parts coded "A" are used only on Spec 6921-1 or 6921A-1
Parts coded "B" are used only on Spec 6921-2 or 6921A-2
Parts coded "C" are used only on Spec 6921-4 or 6921A-4
Parts coded "D" are used only on Spec 6921-5 or 6921A-5
Parts coded "E" are used only on Spec 6921-6 or 6921A-6
Parts coded "F" are used only on Spec 6921-7 or 6921A-7
Parts coded "G" are used only on Spec 6921-8 or 6921A-8
Parts coded "H" are used only on Spec 6921-9 or 6921A-9
Parts coded "J" are used only on Spec 6921-10 or 6921A-10
Parts coded "K" are used only on Spec 6921-11 or 6921A-11
Parts coded "L" are used only on Spec 6921-12 or 6921A-12
Parts coded "M" are used only on Spec 6922-1, 6922A-1, or 6922B-1
Parts coded "N" are used only on Spec 6922-2, 6922A-2, or 6922B-2
Parts coded "P" are used only on Spec 6922-3, 6922A-3, or 6922B-3
Parts coded "Q" are used only on Spec 6922-4, 6922A-4, or 6922B-4
Parts coded "R" are used only on Spec 7126-1
NOTES: Series 6921A generator sets, with wide generator bearings, supersede Series 6921 generator
sets having standard generator bearings. Series 6922A generator sets are similar to corresponding
Series 6921A units, but without canopy insulation. Series 6922B generator sets are identical to
Series 6922A generator sets. The "B" designation is for administrative purposes.

(5) "UNITS PER ASSEMBLY" Column

This column indicates the quantity of parts required for an assembly or subassembly in which the
part appears. This column does not necessarily reflect the total used in the complete end item.
Chapter 4-1
Page 2
September 30/95 Revised