TM 5-3895-346-14
ENGINE OVERHAUL
SPECIFICATIONS
AIR INTAKE SPECIFICATIONS - SERVICE TOOLS
SPECIFICATIONS
Specifications, clearances, and wear limits are listed below. It should be specifically noted that the clearances
apply only when all new parts are used at the point where the various specifications apply. This also applies to
references within the text of the manual. The column entitled LIMITS in this chart lists the amount of wear or
increase in clearance which can be tolerated in used engine parts and still ensure satisfactory performance. It
should be emphasized that the figures given as limits must be qualified by the judgment of personnel
responsible for installing new parts. These wear limits are, in general, listed only for the parts more frequently
replaced in engine overhaul work. For additional information, refer to the text.
TABLE OF SPECIFICATIONS, NEW CLEARANCES AND WEAR LIMITS
These limits also apply to oversize and undersize parts.
MINIMUM
MAXIMUM
LIMITS
ENGINE PART (Standard Size, New)
(inch)
(inch)
(inch)
Blower
Backlash--rotor gears (all)..................... 0.0005
0.0025
0.0035
Backlash between blower drive gear .....
and camshaft gear ................................ 0.0030
0.0070
Clearances: ..........................................
Thrust plate and thrust washer .............. 0.0010
0.0030
Rotor to air outlet side of housing ......... 0.0040
Rotor to air inlet side of housing............ 0.0075
Rotor to front end plate ......................... 0.0060
Rotor to rear (gear) end plate................ 00090
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