REPAIR - TM-9-2520-270-340070

TM 9-2520-270-34

s. PLUGS.

(1) Inspect plugs for leakage or damaged threads.

(2) Inspect plugs for damaged or extruded preformed packings caused by excessive torque

when tightening plugs.

(3) Inspect plug seats for scoring, pitting, or corrosion.

t. CYLINDER BLOCK BALLS.

v i s u a l l y and physically by lightly

(1) Inspect cylinder block balls, one at a time,

sliding your fingernail over any suspect area.

(2) A ball is acceptable if the following surface conditions are present:

( a ) Extremely fine l i n e s o r v e r y l i g h t s m u d g e - l i k e m a r k s t h a t a r e r a n d o m

in pattern and cannot be felt.

(b) A dull or frosty appearance which is uniform in nature.

(3) A ball is defective if one of the following surface conditions is present:

(a) Any nick, chip, burr or discoloration (evidence of heating).

(b) A dull or frosty appearance which is a circular band.

u. CYLINDER BLOCK BALL RACE.

digs, discoloration (evidence of

(1) Inspect concave surface of race for scratches,

heating), scuff marks, and skid marks.

v. CYLINDER BLOCK BALL RACE TANG.

(1) Inspect the race tang for severe discoloration (evidence of heating) on the sides and

end of the tang.

( 2 ) Inspect the working surface of the race tang for pits, holes, or other evidence

t h a t metal has been removed or fallen out. Also look for cracks in the peened or

welded area.

REPAIR

a, GENERAL. Procedures for repair will be the same for most transmission and container parts.

General repair procedures are detailed in steps b thru p following. Special repair procedures

are covered in the task relating to the specific part. After repair, clean all parts well to keep

metal chips or abrasives out of the working parts of the transmission.

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