TB-9-2920-225-34-1
100 AMP REGULATOR
TECHNICAL BULLETIN; CHECKOUT AND REPAIR PROCEDURES
NOVEMBER 1981
TB-9-2920-225-34-1 - Page 4 of 70
TB 9-2920-225-34-1
CHAPTER 1
INTRODUCTION
Section I.
1-1. Scope.
These procedures are applicable to
Direct Support and General Support levels. The
instructions are limited to the model described,
but may also aid in repairing other 100 AMP
regulator (Solid State) models which may be in
use. Repair beyond that covered is permissible if
time and skills are available.
1-2. Purpose.
This bulletin describes the checkout
and repair procedures for the 100 AMP regulator
(Solid State), NSN 2920-00-900-7993.
1-3. General.
a.
The 100 AMP (Solid State) regu-
lator, NSN 2920–00–900–7993, procured under a
military standard performance-type specification.
As such, the design and detail drawings are pro-
prietary to each of the manufacturers and are
not available. At present, there are three suppliers
of the regulators:
(1)
Leece-Neville.
Code Ident
35510 (FSCM)
Sheller-Glove Corp.
Leece-Neville Cleveland Div.
1374 E. 51 St.
Cleveland, OH 44103
Telephone
AC
216 431–0740
(2) DC Electronics.
Successors in 1978 to Vap-Air
Code Ident
34904 (FSCM)
DC Electronics Inc.
544 N. Highland Ave.
Aurora, IL 60506
Telephone
AC 312844-5170
(3)
Leland Electrosystems Inc.
Code Ident
07639 (FSCM)
Leland Electrosystems Inc.
740 E. National Road
P.O. Box 128
Vandalia, OH 45377
Telephone
AC 513898-5881
b.
The 100 AMP regulator was originally desig-
nated as non-repairable. However, since fielding,
the regulator has consistently appeared as a back
order item. This bulletin is provided as an interim
GENERAL
solution to this problem, until maintenance and
provisioning studies are finalized, at which time
pertinent information may be incorporated in
TM 9–2920-225-34 and TM 9–2920–225-34P. The
100 AMP regulator is illustrated in figure l–l.
c.
This bulletin contains instructions for the
repair of nine different models which are described
in the chapters listed below:
Chapter 2
Vap-Air (four models)
Chapter 3
Leece-Neville (four models)
Chapter 4
Leland Airborne (one model)
For simplicity, the regulator model numbers are
abbreviated with a portion of the last digits e.g.,
Vap-Air model 26440002–05 is abbreviated as
model 05, Leece-Neville model R0015027RA is ab-
breviated as model 5027RA.
d.
A 100 AMP regulator checker is described in
chapter 5. In addition, TB 9–2300-409-30, (Gen-
erator System Tester (Go/No-Go), provides fabri-
cation instructions for a regulator test stand.
e.
Replacement parts which are not identical
with the original parts may cause a change in per-
formance of the regulator. The repair facility
should remain aware of this possible performance
change and use substitute parts with reasonable
caution. Replacement parts should be obtained
with the following priorities:
(1) Where parts are available in the supply
system, the stock number is provided.
(2) Where no stock number is available, the
part should be either obtained from a non-repair-
able regulator (cannibalization) or ordered from
the manufacturer.
(3) Appendix A lists all National Stock Num-
bers (NSNS) in ascending National Item Iden-
tification Number (NIIN) sequence for quick
referral to the Federal Supply Code for Manufac-
turer ( FSCM). Addresses for FSCMS are listed in
SB 708-41/42.
(4) When all else fails, try a substitute part
and monitor the performance of the repaired
regulator.
1-1
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