Chapter VIII: Section VII: Maintenance Allocation

Paragraph
Scope 24
Allocation of maintenance 25

24. SCOPE.

=a.= The scope of maintenance and repair by the crew and other units of the using arms is determined by the availability of suitable tools, availability of necessary parts, capabilities of the mechanics, time available, and the tactical situation. All of these are variable and no exact system of procedure can be prescribed.

25. ALLOCATION OF MAINTENANCE.

=a.= Indicated below are the maintenance duties for which tools and parts have been provided for the using arm and maintenance personnel. Replacements and repairs which are the responsibility of ordnance maintenance personnel may be performed by using arm personnel when circumstances permit, within the discretion of the commander concerned. Echelons and words as used in this list of maintenance allocations are defined as follows:

FIRST AND OPERATING ORGANIZATION DRIVER, OPERATOR
SECOND ECHELON: or crew, companies and detachments,
Table III battalions, squadrons, regiments, and
AR 850-15 separate companies and detachments
(first and second echelons, respectively).

THIRD ECHELON: Technical light and medium maintenance
Table III units, including post and port shops.
AR 850-15

FOURTH ECHELON: Technical heavy maintenance and field
Table III depot units including designated post
AR 850-15 and service command shops.

FIFTH ECHELON: Technical base units.
Table III
AR 850-15

SERVICE: Checking and replenishing fuel, oil,
(Including preventive grease, water and antifreeze, air, and
maintenance) par. 24 a battery liquid; checking and tightening
(2) and (3) in part nuts and bolts; cleaning.
AR 850-15

REPLACE: To remove an unserviceable part, assembly,
Par. 24 a (5) or subassembly from a vehicle and
AR 850-15 replace it with a serviceable one.

REPAIR: To restore to a serviceable condition,
Par. 24 a (6) in part such parts, assemblies or subassemblies
AR 850-15 as can be accomplished without completely
disassembling the assembly or
subassembly, and where heavy riveting,
or precision machining, fitting, balancing,
or alining is not required.

REBUILD: Consists of stripping and completely
Par. 24 a (6) reconditioning and replacing in serviceable
AR 850-15 condition any vehicle or unserviceable
part, subassembly, or assembly of
the vehicle, including welding, riveting,
machining, fitting, alining, balancing,
assembling, and testing.

RECLAMATION: Salvage of serviceable or economically
AR 850-15 repairable units and parts removed from
Par. 4 (c) in part CIR. vehicles, and their return to stock. This
75, dated 16 March ’43 includes the process which recovers
and/or reclaims unusable articles or
component parts thereof and places
them in a serviceable condition.

NOTES: (1) Operations allocated will normally be performed in the
echelon indicated by X.

(2) Operations allocated to the third echelon as indicated by E may
be performed by these units in emergencies only.

(3) Operations allocated to the fourth echelon by E are normally
fifth echelon operations. They will not be performed by the fourth
echelon, unless the unit is expressly authorized to do so by the
chief of the service concerned.

ECHELONS

CLUTCH 2nd 3rd 4th 5th

Bearings, clutch release—replace X
Clutch—replace and/or repair (reline) X
Hub, clutch—replace X
Hub, clutch—repair X
Sprocket assembly, clutch—replace X
Sprocket assembly, clutch—repair X

CONTROLS AND LINKAGE

Controls and linkage—service and/or replace X
Controls and linkage—repair X

ELECTRICAL GROUP

Battery—service (recharge) and/or replace X
Battery—repair X
Battery—rebuild E X
Cables, battery—replace and/or repair X
Coil, ignition—replace X
Head, speedometer—replace X
Head, speedometer—repair X
Head, speedometer—rebuild X
Horn assembly—replace X
Horn assembly—repair X
Light assemblies—service and/or replace X
Light assemblies—repair X
Panel, instrument—replace X
Panel, instrument—repair X
Switch assemblies—replace X
Switch assemblies—repair X
Wiring—replace X

ENGINE
(V-45″-Twin Engine)

Bearings, main—replace E X
Bearings, connecting rod—replace E X
Breaker assembly, circuit—replace X
Breaker assembly, circuit—repair X
Breaker assembly, circuit—rebuild X
Carburetor—replace X
Carburetor—repair X
Carburetor—rebuild X
Cleaner, air—service and/or replace X
Cleaner, air—repair X
Cleaner, air—rebuild X
Cylinder assembly—replace X
Cylinder assembly—repair X
Cylinder assembly—rebuild (recondition) E X
Condenser—replace X
Engine assembly—replace *[4] X
Engine assembly—repair X
Engine assembly—rebuild E X
Gasket, cylinder head—replace X
Gears, timing—replace E X
Generator assembly—replace X
Generator assembly—repair X
Generator assembly—rebuild X
Head, cylinder—replace and/or repair X
Lines and connections—replace X
Lines and connections—repair X
Pistons, rings and pins assembly—replace E E X
Plug, spark—replace X
Points, circuit breaker—service and/or replace X
Pump assembly, feed—replace X
Pump assembly, feed—repair X
Pump assembly, feed—rebuild X
Pump assembly, oil—replace X
Pump assembly, oil—repair X
Pump assembly, oil—rebuild X
Pump assembly, oil scavenger—replace and/or
repair X
Pump assembly, oil scavenger—rebuild X
Rod, connecting—replace and/or rebuild
(recondition) X X
Sprocket, engine—replace X
Strained gasoline—replace and/or repair X
Valves—service X

EXHAUST GROUP

Muffler and exhaust pipe—replace X
Muffler and exhaust pipe—repair X

MISCELLANEOUS

Bars, safety—replace X
Bars, safety—repair X
Boxes, ammunition, battery and tool—replace X
Boxes, ammunition, battery and tool—repair X
Carriers, luggage and scabbard—replace X
Carriers, luggage and scabbard—repair X
Frame—replace and/or rebuild E X
Guards, mud—replace X
Guards, mud—repair X
Plate, skid—replace X
Plate, skid—repair X
Saddle—replace X
Saddle—repair X
Saddle—rebuild X
Springs, saddle post—replace X
Tank, fuel—replace X
Tank, fuel—repair X
Tank, oil—replace X
Tank, oil—repair X

SUSPENSION (FRONT)

Bars, handle—replace X
Bars, handle—repair X
Damper, steering—replace X
Drum, brake—replace X
Fork, front assembly—replace X
Fork, front assembly—repair X
Fork, front assembly—rebuild X
Fork, spring—replace X
Fork, spring—repair X
Fork, spring—rebuild X
Plate, rocker—replace X
Plate, rocker—repair X
Shoe assembly, brake—service and/or replace X
Shoe assembly, brake—repair (reline) X
Springs, cushion and rebound—replace X

SUSPENSION (REAR)

Chains, all—replace and/or repair X
Drum, brake, rear—replace X
Guards, chains—replace X
Guards, chains—repair X
Shoe assemblies, brake—service and/or replace X
Shoe assemblies, brake—repair (reline) X
Sprocket, rear—replace X
Wheels—replace X
Wheels—repair X
Wheels—rebuild E X

TIRES

Casings and tubes—replace X
Casings—repair E X
Tubes, inner—repair X

TRANSMISSION

Spring, kick starter—replace X
Sprocket, transmission countershaft—replace X
Starter, kick—replace X
Starter, kick—repair X
Transmission—replace *[4] X
Transmission—repair X
Transmission—rebuild E X

VEHICLE ASSEMBLY

Motorcycle—service X
Motorcycle—rebuild (with serviceable unit
assemblies) X E

[Footnote 4: The second echelon is authorized to remove and reinstall items marked by an asterisk. However, when it is necessary to replace an item marked by an asterisk with a new or rebuilt part, subassembly or unit assembly, the assembly marked by an asterisk may be removed from the vehicle by the second echelon _only after authority has been obtained from a higher echelon of maintenance_.]