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WAR DEPARTMENT TECHNICAL MANUAL 
FIELD 
OPERATING 
LAMP 
WAR DEPARTMENT 
MAY 1945 WAR DEPARTMENT TECHNICAL MANUAL 
T M 8-610 
This manual supersedes TM 8-610, 28 January 1944. 
FIELD 
OPERATING 
LAMP 
WAR DEPARTMENT 
MAY 194 5 
United States Government Printing Office 
Washington: 1945 WAR DEPARTMENT 
Washington 25, D. C., 28 May 1945 
TM 8-610, Field Operating Lamp, is published for the infor- 
mation and guidance of all concerned. 
[AG 300.7 (26 Mar 45)] 
order of the Secretary of War: 
Official : 
J. A. ULIO 
Major General 
The Adjutant General 
G. C. MARSHALL 
Chief of Staff 
Distribution : 
AAF (5) ; AGF (5) ; ASF (2) ; T Of Opns (I'O) ; Dept (10) ; 
Base Comd (5) ; S Div ASF (1) ; SvC (5) ; PE (2) ; ASF 
Dep (Med Sec) (10) ; Dep 8 (Cent) (25) ; except St. Louis 
Med Dep (75) ; GH (4) ; SH (2) ; Conv H (2) ; USMA (2) ; 
A (2) ; CHQ (2) ; AF (5) ; T/O & E 8-187 (2) ; 8-510 (2) ; 
8-550 (4) ; 8-550S (4) ; 8-550T (4) ; 8-550-1-T (4) ; 
8-560 (2) ; 8-572S (2) ; 8-580 (3) ; 8-581 (3) ; 8-590 (2) ; 
8-610 (1); 8611 (1); 8-667 (2). 
Refer to FM 21-6 for explanation of distribution symbols. CONTENTS 
Paragraph Page 
PART ONE. INTRODUCTION. 
Section I. General. 
Scope 1 1 
Records 2 2 
II. Description and data. 
Description 3 2 
Data 4 2 
PART TWO. OPERATING INSTRUCTIONS. 
Section III. General. 
Scope 5 5 
IV. Service upon receipt of equipment. 
Unpacking and assembling fc. 6 5 
V. Operation. 
Lamp, operating, field, generator as power source 7 7 
110-volt line as power source 8 7 
220-volt line as power source 9 7 
Storage battery as a power source 10 8 
Emergency batteries as power source 11 10 
VI. Operation of auxiliary equipment. 
Field operating lamp generator 12 10 
PART THREE. MAINTENANCE INSTRUCTIONS. 
Section VII. Lubrication. 
Monthly 13 11 
VIII. Preventive maintenance services. 
Operator maintenance (first echelon) (daily).... 14 11 
Organizational maintenance (second echelon) 
(monthly) 15 12 
IX. Trouble shooting. 
Lamp fails to operate with generator as power 
■source 16 12 
Lamp fails to operate with 110- or 220-volt line 
as power source 17 12 
Lamp fails to operate with storage battery as 
source of power 18 13 
Lamp fails to operate with emergency batteries 19 13 
X. Maintenance operations. 
To replace lens 20 13 
To replace bulbs 21 16 Paragraph Page 
To clean corrosion from carrying case 22 16 
To replace rubber cushions 23 16 
To adjust lamp head yoke tension 24 17 
To clean socket contacts and threaded collar 25 17 
To clean or replace heat cylinder 26 17 
To replace dry batteries 27 18 
PART FOUR. AUXILIARY EQUIPMENT. 
Section XI. General. 
Description 28 19 
APPENDIX, SHIPMENT AND STORAGE ....... 21 
INDEX 22 Figure 1. Field operating lamp, front view, case closed. This manual supersedes TM 8-610, 28 January 1944. 
PART I 
INTRODUCTION 
Section I. GENERAL 
!. Scope 
a. These instructions are published for the information and 
guidance of the personnel to whom this equipment is assigned. 
Figure 2. Field operating lamp, side view, case open. They contain information on the operation and maintenance of 
the equipment, as well as descriptions of the major units and 
their functions in relation to the other components of the equip- 
ment. They apply only to Medical Department item No, 9981500 
Lamp, operating, field. (See figs. 1 and 2.) 
b. These instructions are arranged in four parts: Part One, 
Introduction; Part Two, Operating Instructions; Part Three, 
Maintenance Instructions; Part Four, Auxiliary Equipment, 
c. All requisitions for spare parts should be submitted in ac- 
cordance with the latest revision of ASF Supply Catalog Med 7. 
2. Records 
No special maintenance forms are required to be kept by the 
using personnel except as may be prescribed by the medical officer 
in charge. 
Section II. DESCRIPTION AND DATA 
3. Description 
Lamp, operating, field, is a portable operating lamp used as a 
medium of illumination for surgical operations performed at 
field installations. It is so constructed that field personnel may 
readily set it up by hand. For transport, the lamp and its up- 
right are disassembled and packed in a carrying case. The case 
is provided with a hinged lid and two handles, and contains three 
dry-cell batteries wired in series, totaling 135 volts for emergency 
lighting. 
4. Data 
a. Sources of power. See chart I. 
b. Types of bulbs used. (1) Part No. SR00021 Bulb, 50-50 
watt, 115-volt. (See fig. 3 (5).) 
(2) Part No. SR00022 Bulb, 50 C.P., 6-8-volt, single-contact 
base. (See fig. 3 (6).) 
c. Manufacturers; (1) Wilmot Castle Company, Rochester, 
New York. 
(2) American Sterilizer Company, Erie, Pennsylvania. 
d. Accessories. See figure 3. 
2 Figure 3. Field operating lamp, accessories. 
Med. Dept. No 
1. CLIP AND COVER. 
2. 9R00I06 CORD, BATTERY. 
3. 9R00I04 CORD, LINE. 
4. PERFORATED CORD PORT. 
5. SR0002I BULB, 50-50-WATT, II5-V. 
6. SR00022 BULB, 50 C.P., 6-8-V., SINGLE-CONTACT BASE. 
7. SR000I8 ADAPTER, SOCKET, MOGUL TO SINGLE-CONTACT BAYONET, 
8. SR00019 ADAPTER, SOCKET, MOGUL TO MEDIUM SCREW BASE. 
9. 9R00II2 CORD AND CAP, HEAD. 
N omenclature 
3 CHART I 
Source of power 
Voltage 
Approximate 
duration of 
power 
Bulb used 
Use receptacle 
labeled 
Dry cell batteries 
(three), 45 - volt, 
30 - cell, Signal 
Corps No. 3A26.. 
135 
When new— 
5 hours 
One year old— 
21/2 hours 
50-50-watt, 
115-volt, . 
Part No. 
SR00021. 
Emergency 
battery 
Storage battery, 
wet cell 
6-8 
Indefinite 
50 C.P. 6-8- 
volt single 
contact 
base, 
Part No. 
SR00022. 
8-v storage 
battery 
Line, a-c—d-c 
110-120 
Indefinite 
50-50-watt, 
115-volt, 
Part No. 
SR00021. 
110-120-v 
a-c—d-c 
Line, a-c—d-c 
220-240 
Indefinite 
50—50-watt, 
115-volt, 
Part No. 
SR00021. 
220-240-v 
a-c-d-c 
Lamp, operating, 
field generator ... 
110 
Indefinite 
50-50-watt, 
115-volt, 
Part No. 
SR00021. 
110-120-v 
a-c—d-c 
4 PART II 
OPERATING INSTRUCTIONS 
Section III. GENERAL 
5. Scope 
Part Two contains information for the guidance of the personnel 
responsible for the operation of this equipment. It contains in- 
formation on the operation of the equipment with the description 
and location of the major parts for operation of the unit. 
Note. Failure or unsatisfactory performance of equipment will be re- 
ported on WD AGO Form 468. If this form is not available, see TM 38-250. 
This form will be made out in duplicate by the using or service organization 
and forwarded in duplicate through command channels to The Surgeon 
General. 
Section IV. SERVICE UPON RECEIPT OF EQUIPMENT 
6. Unpacking and Assembling 
a. Open the lid of the carrying case as shown in figure 4. 
b. Remove the base section (fig. 4 (2)), two of the intermediate 
sections (fig. 4 (3)), and the elbow section (fig. 4 (4)) of the 
lamp upright from the carrying case. 
c. Screw these sections together as tightly as possible by hand. 
d. Insert the upright, with the unthreaded end of the base 
section down, in the bracket (fig. 4 (12)) provided on the front 
of the carrying case. The pin head must be at an angle of 45° 
to the case when the upright is inserted. 
e. Lock the pin in place by rotating clockwise. 
/. Remove the remaining intermediate section and screw it into 
the elbow on the upper end of the upright. 
g. Pull back the knob on the head clamp (fig. 4 (10)) and re- 
lease the head clamp. 
h. Remove the lamp head with the adjustable yoke from the 
case. 
i. Screw the head assembly into the coupling on the end of the 
horizontal intermediate section. 
j. Remove the caps from the cord ports. (See fig. 4 (11).) 
5 12 
ir 
Med. Dept. No. 
1. RECEPTACLE BOX. 
2. BASE SECTION. 
3. INTERMEDIATE SECTION. 
4. ELBOW SECTION. 
5. PIN AND CHAIN FOR CASE LID. 
6. LID. 
7. 5R00004 LENS, STIPPLED GLASS. 
8. CASE HASP. 
9. CASE HANDLE. 
10. HEAD CLAMP. 
11. CORD PORT CAP WITH CHAIN ATTACHED. 
12. UPRIGHT BRACKET. 
Figure J+. Field operating lamp packed in case with lid open. 
Nomenclature 
6 k. Hook the cord coming from the mogul socket of the lamp 
head through a cord-retaining hook at the top of the upright. 
l. Pass the three-prong terminal plug at the end of the cord 
through the left cord port in the front of the case, substituting 
the perforated water-sealing cap on the cord for the plain cap 
covering the port during transport. 
m. The unit is then connected as described in section V for vari- 
ous sources of power. 
Section V. OPERATION 
7. Lamp, Operating, Field, Generator as Power Source 
a. This generator supplies 110 volts. 
b. The lamp head must be fitted with a (SR00021) 115-volt, 
50-50-watt mogul-base twin filament marine bulb. (See fig. 3 
(5).) The bulb operates with both filaments in parallel. 
c. Plug the feeder cord into the input (first) receptacle and the 
other end into the receptacle on the generator. 
d. Insert the lamp head cable plug into the 110-120-volt, a-c-d-c 
(third) receptacle. (See figs. 5, 6, and 7.) 
Figure 5, Receptacle panel complete. 
S. I 10-volt Line as Power Source 
a. The lamp head must be fitted with a 115-volt, 50-50-watt 
mogul-base twin filament marine bulb. The bulb operates with 
both filaments in parallel. 
h. Plug the feeder cord plug into the input (first) receptacle and 
the other end into the receptacle of the incoming line. 
c. Plug the lamp head cable into the 110-120-volt, a-c-d-c 
(third) receptacle. 
9. 220-volt Line as Power Source 
a. The lamp head must be fitted with a 115-volt, 50-50-watt 
7 mogul-base twin filament marine bulb. The bulb operates with 
both filaments in series. 
b. Plug the feeder cord female plug into the input (first) recep- 
tacle and the male plug into the receptacle of the incoming line. 
c. Plug the lamp head cable into the 220-240-volt, a-c-d-c 
(fourth) receptacle. 
Figure 6. Power hook-up diagrams. 
!0. Storage Battery as a Power Source 
a. The lamp head must be fitted with a 6-8-volt, 50-candlepower 
bayonet base bulb. (See fig. 3 (6).) 
b. Remove the input cord and substitute the female plug of the 
short storage battery cord (fig. 3 (2)) into the input (first) 
receptacle. 
c. Attach the two rubber covered clamp type terminal clips to 
the posts of any size storage battery to obtain 6- to 8-volt current. 
When using 12- to 24-volt batteries, it is advisable to shift the ter- 
minal clips from one set of cells to another frequently to equalize 
the power of the various cells. 
d. Insert the lamp head cable plug into the 8-volt storage bat- 
tery (fifth) receptacle. 
Note. The sulfuric acid used as part of the electrolyte of the storage 
battery attacks and destroys practically anything with which it comes in con- 
tact. Use rubber aprons to protect clothes and a solution of ammonia water 
or soda to neutralize any spilled solution. Cotton clothes are particularly 
susceptible to attack by acid. A quantity of soda solution or ammonia water 
should be kept readily available in all battery rooms, tents, trucks, or trailers 
for emergency use in treating acid burns. Pure sulfuric acid is exceedingly 
8 Figure 7. Receptacle box panel-wiring diagram. 
9 dangerous to the flesh. Normal battery electrolyte will not burn seriously 
if immediately neutralized or thoroughly washed off with cold water. The 
eyes are particularly sensitive and any quantity of electrolyte splashed or 
lubbed into them can cause loss of sight. They should be washed with water 
immediately and this condition reported to the medical officer. Never rub 
the eyes after working on a storage battery. 
1 i. Emergency Batteries as Power Source 
a. The lamp head must be fitted with a 115-volt, 50-50-watt 
mogul-base twin filament marine bulb, 
b. The feeder cord is removed from the input (first) receptacle 
and is not used. 
c. The lamp head cord is plugged into the emergency battery 
(second) receptacle. 
Section VI. OPERATION OF AUXILIARY EQUIPMENT 
12. Field Operating Lamp Generator 
Operation of the lamp, operating, field, generator, Medical Depart- 
ment Item No. 9931700 is described in TM 8-626. 
10 PART III 
MAINTENANCE INSTRUCTIONS 
Section VII. LUBRICATION 
I 3. Monthly 
a. The threaded ends of the upright sections should be lightly 
coated with oil, lubricating, preservative, special (PS) to prevent 
corrosion and to facilitate hand assembly. 
b. Apply a few drops of oil, lubricating, preservative, special 
( PS) to the lamp head bearing screw and the yoke tension washer. 
Section VIII. PREVENTIVE MAINTENANCE SERVICES 
14. Operator Maintenance First Echelon (Daily) 
a. Inspect the interior of the carrying case and clean if neces- 
sary. 
. b. Dry all sponge rubber or gum cushions and check to see that 
they are securely cemented in place to provide a watertight seal. 
Wiring of lamp head 
Figure 8. Wiring of lamp head. 15. Organizational Maintenance Second Echelon (Monthly) 
a. Inspect the dry batteries and compartment for corrosion and 
freshness of the batteries. 
b. Inspect the lens and heat cylinder for cleanliness. 
c. Inspect the socket contacts and threaded collar for corrosion. 
d. Inspect spare lens, bulbs, and adapters, and replace any lost 
or damaged parts. (See ASF Supply Catalog Med 7.) 
e. Inspect cords. 
Section IX. TROUBLE SHOOTING 
16. Lamp Fails to Operate With Generator as Power Source 
Possible causes 
Possible remedies 
a. 
Bulb burned out. 
a. Replace with 50-50-watt, 
115-volt marine bulb. 
b. 
in. 
c. 
Plugs not securely plugged 
b. Plug in securely. 
Damaged or broken wires. 
c. Repair or refer to higher 
echelon. (See fig. 8.) 
d. 
Power source fails. 
d. See TM 8-626 for opera- 
tion and maintenance of gen- 
erator. 
e. 
Socket contacts corroded. 
e. Clean. (See par. 25.) 
/• 
Threaded collar corroded. 
/. Clean. (See par. 25.) 
g• 
Plugs in wrong recep- 
g. Plug in proper receptacle. 
tacles. 
(See par. 7.) 
17. Lamp Fails to Operate With I 10- or 220-volt Line 
as Power Source 
Possible causes 
Possible remedies 
a. 
Bulb burned out. 
a. Replace with 50-50-watt, 
115-volt marine bulb. 
b. 
in. 
c. 
Plugs not securely plugged 
b. Plug in securely. 
Damaged or broken wires. 
c. Repair or refer to higher 
echelon. 
d. 
Power source fails. 
d. Check line fuses or report 
to post engineers. 
e. 
Socket contacts corroded. 
e. Clean. (See par. 25.) 
f- 
Threaded collar corroded. 
/. Clean (See par. 25.) 
9• 
Plugs in wrong recep- 
g. Plug in proper receptacle. 
tacles. 
(See pars. 8 and 9.) 
12 18. Lamp Fails to Operate With Storage Battery 
as Source of Power 
Possible causes 
Possible remedies 
a. Bulb burned out or im- 
a. Replace with 6-8-volt bulb. 
proper size. 
b. Plugs not securely plugged 
in. 
b. 
Plug in securely. 
c. Clip and battery terminals 
c. 
Clean. 
corroded. 
d. Battery weak or dead. 
d. Replace storage battery. 
e. Socket contacts corroded. 
e. 
Clean. (See par. 25.) 
•/. Threaded collar corroded. 
/• 
Clean. (See par. 25.) 
g. Plugs in wrong recep- 
9- 
Plug in proper receptacle. 
tacles. 
(See par. 10.) 
19. Lamp Fails to Operate With Emergency Batteries 
Possible causes 
Possible remedies 
a. 
Bulb burned out or im- 
a. Replace with 6-8-volt bulb. 
proper size. 
b. Plug not securely plugged 
in 
h. Plug in securely. 
c. 
Batteries weak or dead. 
c. Replace dry batteries. 
(See par. 27.) 
d. 
Socket contacts corroded. 
d. Clean. (See par, 25.) 
e. 
Threaded collar corroded. 
e. Clean. (See par. 25.) 
Section X. MAINTENANCE OPERATIONS 
20. To Replace Lens 
a. Remove the retainer screw and retainer (fig. 9 (2) and 
(10)), and clean all foreign matter out of the retainer. 
b. Secure new lens and tape the rim of the lens with adhesive 
or electrician’s tape about y2 inch wide. Be sure that the tape 
has equal overlap on both sides of lens and that tape ends meet. 
In some cases it may be necessary to use two layers of tape to 
provide a tight fit in the retainer ring. 
c. Install new lens with stippled face inward. (See fig. 9 (1)). 
d. Replace lens retainer and tighten retainer screw. 
e. A spare lens is packed in the cover of the carrying case. 
13 Figure 9. Lamp head assembly, sectionalized. 
STIPPLED FACE INWARD- 
14 Med. Dept. No. Nomenclature 
1. 5R00004 LENS, STIPPLED GLASS. 
2. 9R00092 RING, RETAINER, LENS. 
3. SR00024 SCREW, 6-32 x 3/16 INCH, WASHER H.M., 144 TO PKG. 
4. SR000I6 SOCKET, MOGUL. 
5. SR000I7 NUT, 8 x 32. HEX.. 144 TO PKG. 
6. SR00015 SCREW, 8-32 x I INCH, R.H.M., 144 to PKG. 
7. SR000I2 SCREW, 4 x 3/16 INCH, SHEET METAL, R.H., 144 TO PKG. 
8. SR000II SETSCREW, 8-32 x /2 INCH, HEADLESS, CUP PT.. 100 TO PKG. 
9. 9R00056 SCREW, BEARING, LAMP HEAD, STEEL. 
10. SR00020 SCREW, 4-40 x 3/4 INCH, FILL. H.M., 144 TO PKG. 
11. SR00009 CORD, JACKET, NO. 18, THREE-CONDUCTOR. 
12. 9R00086 PIN, LAMP HEAD. 
13. 9R00088 SPRING, HAT, LAMP HEAD. 
14. SR00023 CYLINDER, HEAT, 4 x 4 INCHES, AKLO. 
15. SR00022 BULB, 50 C.P., 6-8-V., SINGLE-CONTACT BASE. 
16. SR000I8 ADAPTER. SOCKET, MOGUL TO SINGLE-CONTACT BAYONET. 
Figure 9. Lamp head assembly, sectionalized. 
15 21. To Replace Bulbs 
a. Remove the reflector cap at the back of the lamp head by a 
slight counterclockwise turn. 
b. If the 50-50-watt, 115-volt bulb is to be replaced with a new 
bulb of the same size, unscrew and replace with a new one. 
c. If a 6-8-volt, bayonet base bulb is to be used, remove the 
50-50-watt bulb and its socket adapter and replace with a 
(SR00018) socket adapter and insert the 6-8-volt bulb. 
d. If a 6-8-volt bulb is replaced with a 50-50-watt bulb, re- 
move the bulb and adapter and replace with a 50-50-watt mogul- 
base bulb. 
e. If the 50-50-watt, mogul-base bulb is not available, a common 
50-watt bulb may be substituted when using 110-volt current, by 
using the socket adapter (SR00019) furnished with the lamp. 
/. Replace the reflector cap, bearing the lamp head cord to the 
lamp head by turning clockwise. 
Caution: Use only bulbs of the proper size, voltage, and watt- 
age recommended. A bulb too small will not give sufficient light 
and a bulb with wattage too great will overload the circuit or 
cause the lens to break. 
22. To Clean Corrosion From Carrying Case 
If the emergency batteries are old, they must be replaced and any 
corrosion must be cleaned out from the carrying case. 
a. Remove the old batteries. 
b. Scrape out any corroded areas. 
c. Apply a solution of sodium bicarbonate to the corroded areas 
to neutralize any acid that may be present. 
d. Dry the carrying case thoroughly. 
e. Apply a thin coating of vaseline to the corroded areas and 
wipe off the excess with a dry rag. 
/. Replace with fresh batteries, Signal Corps Number 3A26. 
23. To Replace Rubber Cushions 
a. All sponge rubber cushions must be in place for lamp to 
stand transportation properly, and all gaskets in place to water- 
proof the unit completely. 
b. Loose cushions may be cemented in place with ordinary 
tire patch cement. If compartment cushions are lost and new 
sponge rubber cushions are not available, they may be replaced by 
cushions cut from %-inch hair or cotton felt. 
c. Gaskets may be cemented in place with tire patch cement. 
Care should be taken when cementing to be certain that the sec- 
16 tions where gaskets meet are cemented together to make a water 
tight joint. The gaskets must be replaced with new gaskets of 
the same material. See ASF Supply Catalog Med 7. 
24. To Adjust Lamp Head Yoke Tension 
a. To increase tension so as to hold reflector more firmly in a 
given position, adjust as follows: 
(1) Loosen setscrews on both sides of yoke. 
(2) Tighten the yoke tension screws until desired tension is 
reached. 
(3) Tighten setscrews. 
b. To decrease tension on lamp head yoke, adjust as folloivs: 
(1) Unscrew setscrews. 
(2) Loosen yoke tension screws until yoke moves easily. 
(3) Tilt back and forth several times to free washers. 
(4) Tighten screws to desired tension. 
(5) Tighten setscrews. 
25. To Clean Socket Contacts and Threaded Collar 
If socket contacts or threaded collar are dirty or corroded they 
should be cleaned to brightness with crocus cloth or very fine 
emery paper. 
26. To Clean or Replace Heat Cylinder 
a. Remove the retainer ring and lens. 
b. Remove the cap from the back of the lamp. 
c. Turn the reflector up and remove the hat springs (fig. 9 
(13)) from the pins. (See fig. 9 (12).) Do not lose the pins 
which will drop out of reflector. Hold the hat in place until all 
the springs are removed from the pins, 
d. Wash the heat cylinder (fig. 9 (14)) with soap and water 
or Acetone, Med. Dept. No. 1003000. Rinse thoroughly with 
■water to remove any film and dry carefully. 
e. Clean the reflector each time the heat cylinder is washed. 
Clean and polish with a nongritty metal polish such as Polish, 
metal, type 3, paste, 1-lb container: Ord. No. K001-10-81090, 
Fed. Stock No. P-P-556A. Do not use gritty cleansers of any 
kind. 
/. To replace heat cylinder proceed as follows: 
(1) Hook two of the hat springs to their respective pins and 
holes of the hat. 
(2) Place the heat cylinder underneath the hat. 
(3) Secure the third spring. 
17 (4) Wipe the cylinder surface free from fingerprints before 
replacing lens. 
27. To Replace Dry Batteries 
a. Remove the cover plate which will expose the dry batteries. 
b. Clean any corrosion from the case. (See par, 22.) r 
c. Obtain three 45-volt dry batteries, type BA26, Signal Corps 
Number 3A26. 
d. Connect these batteries in series in the case. 
e. Replace cover plate. 
18 PART IV 
AUXILIARY EQUIPMENT 
Section XI. GENERAL 
28. Description 
a. Lamp, operating, field, dolly. A dolly mounted on casters 
and equipped with a handle, as shown in figure 10, is available for 
easy movement of the lamp in the operating room and from room 
to room; it is listed as Medical Department Item No. 9931600 
Lamp, operating, field, dolly. 
Figure 10. Dolly for field operating lamp. 
b. Lamp, operating, field, generator. A portable gasoline 
motor-generator unit, as shown in figure 11, is used as an 
emergency power source and listed as Medical Department Item 
No. 9931700 Lamp, operating, field, generator. TM 8-626 covers 
the operation and maintenance of this generator. 
c. Storage batteries. Storage batteries are not provided with 
the lamp. Spare batteries for use in trucks may be used with 
the lamp. 
19 Figure 11. Portable gasoline motor generator unit. 
20 APPENDIX 
SHIPMENT AND STORAGE 
Disassembling and Packing 
a. 'Detach the feeder cord from the receptacle box panel. Re- 
move the water-sealing cap and pull the cord through the port. 
b. Detach the lamp head cord from the receptacle and remove 
it from the cord port. 
c. Cover both cord ports by means of the two plain caps sus- 
pended by chains at the ports. 
d. Place the cords in one of the compartments in the case. 
e. Unscrew the head locking bushing from the coupling on the 
outer end of the horizontal intermediate section and make sure 
that the 50-50-watt, 115-volt marine bulb is in the lamp head un- 
less it is known that 110 or 220 volts will not be available when 
the lamp is used again. Do not store the lamp head with the 
6-8-volt bulb in place. 
/. Place the lamp head with the lamp head cord carefully 
coiled in its position under the head clamp in the case. Latch the 
head clamp in place. 
g. Place all extra bulbs and socket adapters as well as the stor- 
age battery cord in their respective compartments. 
h. Unscrew the horizontal intermediate section and disassemble 
the remaining-sections of the upright. 
i. Remove the base section by a slight counterclockwise turn 
and lift it out of its bracket. 
j. Place the sections in the case in the following order, from 
back to front: elbow, horizontal intermediate, two other inter- 
mediates, base. Latch the locking bar in place. 
k. Lower the lid and latch the hasps. 
21 INDEX 
Paragraph Page 
Adjusting lamp head yoke tension 24 17 
Assembling 6 5 
Auxiliary equipment 12 10 
Cleaning: 
Corrosion in carrying case 22 16 
Sockets contacts and threaded collar 25 17 
Heat cylinder 26 17 
Data 4 2 
Description 3 2 
Disassembling App. 21 
Generator: 
Operating with 7 7 
As auxiliary equipment 12 10 
Lamp, operating, field: 
Dolly 28a 19 
Generator 286 19 
Lubrication 13 11 
Maintenance: 
Daily 14a 11 
Monthly 15a 11 
Operator (first echelon) 14 11 
Organizational (second echelon) 15 11 
Operation with— 
Generator 7 7 
110-volt line 8 7 
220-volt line 9 7 
Storage battery 10 8 
Emergency batteries 11 10 
Operator maintenance (first echelon) 14 11 
Organizational maintenance (second echelon) 15 12 
Packing App. 21 
Records 2 2 
Replacing: 
Lens 20 13 
Bulbs 21 16 
Rubber cushions 23 16 
Heat cylinder 26 17 
Dry batteries 27 18 
Storage batteries 28c 19 
Trouble shooting using— 
Generator 16 12 
22 Paragraph Page 
110- or 220-volt line 17 12 
Storage battery v 18 13 
Emergency batteries 19 13 
Unpacking 6 5 
U. S. Government Printing Office: 1945—628026—TM 114 
23