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 554 of 779
3. Average entrance temperature = 88° F
4. Fuel temperature =
70° F
5. Torque arm = 1.75 feet
Correction Factors:
1. Dry entrance pressure (1) in inches Hg -
Absolute 29.35-0 (2) = 29.35 = Correc -
tion = .0067
2. Average entrance temperature 88 F (3) -
Correction = .0154
3. Fuel temperature (4) - Correction = .010
4. Total correction - .0067 + .0154 +
.010 = 1.0321
SAMPLE CALCULATIONS :
bhp Observed
Correction Net bhp
612.0
X 1.0321 = 631.65
Fan hp
Fan hp@2400 rpm (Table 8-5) = 108
Corrected
Gross
bh p
Corrected net bhp + Fan hp = 631.65 +
108 = 739.65
Corrected Gross Torque
Corrected gross bhp x 5252 =
Brake Specific Fuel Consumption
8-7. Quality Control lest
a. General. A
50-hour quality control test shall
be conducted for the purpose of determining the
continued quality of the engine.
b. Control Test.
(1) Selection of test
sample.
Engines shall
be selected at the rate of one per month when
production is below 100 per month; or one in
every 100 engines when production exceeds 100
units per month; or on curtailed production at
least one every 60 days. Test engines shall be
identified as to production period, examined for
defects and subjected to the tests outlined in the
technical manual.
(2)
Fifty-hour quality control test schedule.
Each engine selected in accordance with sub
paragraph (1), above, shall be operated, a s
specified in table 8-6, for 50 hours as nearly
continuously as possible
(a) Starting with run No. 3, an oil con-
sumption reading shall be taken each one-half
(½) hour when operating at 2400 rpm full load.
(b) A blow-by check shall be made at
2400 rpm full load prior to runs No.'s. 3-11-15-
19 and 22. Normal reading will be 11 to 15
cubic feet per minute (CFM). Maximum per-
missible blow-by is 18 cfm. The blow-by can be
measured with a volumeter or gas meter between
the crankcase breather tube and exhaust pipe.
(c) Approximately 100 amp’s load shall
be applied to the generator during the complete
test.
(d) Readings shall be taken every one-half
(½) hour and will include all data taken on the
regular test.
(3)
Corrections.
Engine subjected to this
test shall be completely disassembled and all
interchangeable parts subjected to wear or stress
shall be inspected. A complete report including
the inspection and testing of the engine shall be
submitted to the Government inspector. Should
there be evidence of failure of parts requiring
correction as a result of this test, the inspector
shall refuse acceptance of subsequent production
engines until such corrections have been made
an d
objective
evidence presented to th e
Government inspector. Engines subjected to this
test shall be reassembled with new part s
replacing those found unsatisfactory durin g
examination.
(4)
Disposition of engines.
After correction
of all defects disclosed by the test, engine shall be
reassembled, given a final run in accordance
with paragraph 8-4, inspected in accordance
with paragraph 8-6, and if found acceptable,
shipped as a regular production engine.
(5)
Control test failure.
Failure of a control
test engine to pass any specified examination or
test shall be cause for rejection of subsequent lots
until satisfactory evidence is submitted to the
government inspector that the faults revealed by
the examination or test have been corrected.
8-12
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