TM 5-3805-280-24-2
Cylinder Block, Liners, Pistons and Rods
MEASURE CYLINDER BLOCK TOP DECK
10
48
FLATNESS
Measure cylinder block top deck flatness using D05012ST
Precision Straightedge and feeler gauge. If flatness is not
as specified, clean up top deck of cylinder block.
Maximum Acceptable Out-of-Flat, Entire Length or Width
(Used)--Specification
Measurement.............................................................. 0.08 mm (0.003 in.)
Maximum Acceptable Out-of-Flat (Any 150 mm (5.90 in.) Length--
Specification
Measurement............................................................ 0.025 mm (0.001 in.)
Top Deck Surface Finish (Surface Grind Only) (AA)--Specification
Surface Finish........................................... 0.8--3.2 micrometers (32--125
micro-in.)
Top Deck Surface Finish Wave Depth--Specification
Maximum Depth ..................................................... 0.012 mm (0.0005 in.)
Main Bearing Bore Centerline-to-Cylinder Block Top Deck--
Specification
Distance................................................................. 337.896--337.972 mm
(13.3029--13.3059 in.)
IMPORTANT: When cylinder block top deck or main
bearing bores are machined, the
dimension from crankshaft centerline to
top deck will be changed. Make sure
this dimension is within specifications,
otherwise, piston may contact cylinder
head.
RG,10,DT7395 1911NOV971/1
13-161
