CHAPTER 1 INTRODUCTION - TB-9-2920-225-34-10004

TB 9-2920-225-34-1

CHAPTER 1

INTRODUCTION

GENERAL

Section I.

1-1. Scope. These procedures are applicable to

solution to this problem, until maintenance and

Direct Support and General Support levels. The

provisioning studies are finalized, at which time

pertinent information may be incorporated in

instructions are limited to the model described,

TM 92920-225-34 and TM 92920225-34P. The

but may also aid in repairing other 100 AMP

100 AMP regulator is illustrated in figure ll.

regulator (Solid State) models which may be in

use. Repair beyond that covered is permissible if

c. This bulletin contains instructions for the

time and skills are available.

repair of nine different models which are described

in the chapters listed below:

1-2. Purpose. This bulletin describes the checkout

Chapter 2

Vap-Air (four models)

and repair procedures for the 100 AMP regulator

Chapter 3

Leece-Neville (four models)

(Solid State), NSN 2920-00-900-7993.

Chapter 4

Leland Airborne (one model)

1-3. General. a. The 100 AMP (Solid State) regu-

For simplicity, the regulator model numbers are

lator, NSN 2920009007993, procured under a

abbreviated with a portion of the last digits e.g.,

military standard performance-type specification.

Vap-Air model 2644000205 is abbreviated as

As such, the design and detail drawings are pro-

model 05, Leece-Neville model R0015027RA is ab-

prietary to each of the manufacturers and are

breviated as model 5027RA.

not available. At present, there are three suppliers

of the regulators:

d. A 100 AMP regulator checker is described in

(1) Leece-Neville.

chapter 5. In addition, TB 92300-409-30, (Gen-

erator System Tester (Go/No-Go), provides fabri-

Code Ident 35510 (FSCM)

cation instructions for a regulator test stand.

Sheller-Glove Corp.

Leece-Neville Cleveland Div.

e. Replacement parts which are not identical

1374 E. 51 St.

with the original parts may cause a change in per-

Cleveland, OH 44103

formance of the regulator. The repair facility

Telephone AC 216 4310740

should remain aware of this possible performance

(2) DC Electronics.

change and use substitute parts with reasonable

Successors in 1978 to Vap-Air

caution. Replacement parts should be obtained

Code Ident 34904 (FSCM)

with the following priorities:

DC Electronics Inc.

(1) Where parts are available in the supply

544 N. Highland Ave.

system, the stock number is provided.

Aurora, IL 60506

(2) Where no stock number is available, the

Telephone AC 312844-5170

part should be either obtained from a non-repair-

(3) Leland Electrosystems Inc.

able regulator (cannibalization) or ordered from

Code Ident 07639 (FSCM)

the manufacturer.

Leland Electrosystems Inc.

(3) Appendix A lists all National Stock Num-

740 E. National Road

bers (NSNS) in ascending National Item Iden-

P.O. Box 128

tification Number (NIIN) sequence for quick

Vandalia, OH 45377

referral to the Federal Supply Code for Manufac-

Telephone AC 513898-5881

turer ( FSCM). Addresses for FSCMS are listed in

b. The 100 AMP regulator was originally desig-

SB 708-41/42.

(4) When all else fails, try a substitute part

nated as non-repairable. However, since fielding,

and monitor the performance of the repaired

the regulator has consistently appeared as a back

regulator.

order item. This bulletin is provided as an interim

1-1