TM-9-2815-200-35

ENGINE, WITH CONTAINER:TURBOSUPERCHARGED, DIESEL ,FUEL INJECTION ,90-DEGREE “V” TYPE, AIR - COOLED ,12 - CYLINDER , ASSEMBLY ;MODELS AVDS-1790-2M (2815-856-4996), AVDS-1790-2A AND AVDS-1790-2AM (2815-856-9005)

TECHNICAL MANUAL; DIRECT SUPPORT, GENERAL SUPPORT AND DEPOT MAINTENANCE MANUAL INCLUDING REPAIR PARTS AND SPECIAL TOOLS LISTS

TM-9-2815-200-35 - Page 349 of 779

Figure 6-51. Cylinder identifying groove.

(1)

Cylinder barrel.

Refer to paragraph 6-

32. Ultrasonic Inspection of Cylinder Barrel, for

inspection procedures of the cylinder barrel.

(2)

Cylinder bore.

Inspect cylinder bore

for deep scratches,

scoring, or metal pickup.

Inspect joint between cylinder head and cylinder

barrel for pitting or erosion. Carefully run finger

over cylinder wall to check for ring ridge.

(3)

Cylinder bore dimensions.

Cylinde r

bores taper slightly at the head end (a room

temperature). The tapered section expands, and

is essentially straight at operating temperature.

Check bore dimensions, as described in (a )

through (d), below, against limits specified in

overhaul standards (table 6-15).

(a) With cylinder at room temperature,

take two cylinder bore measurements at top of

ring travel. Measure diameter approximately

parallel to line of valves, and then take cross

6-55