TM 5-3805-280-24-1
Tests
Rated Engine--Specification
Speed .......................................................................................... 2100 rpm
NOTE: If using the JT07248 Turbo Boost Kit, a check
valve at the pressure gauge inlet traps the highest
reading for boost pressure and does not decrease
as the pressure decreases.
10. Record the highest pressure reading at rated engine
speed. The pressure increases as the engine speed
9010
is pulled down to rated engine speed and then
25
decreases.
9
Turbocharger Boost--Specification
Pressure ..................................................... 79--100 kPa (0.79--1.00 bar)
(11.5--14.5 psi) using No. 2 fuel
Turbocharged Boost1--Specification
Pressure ....................................................... 74--93 kPa (0.73--0.93 bar)
(10.7--13.5 psi) using No. 1 fuel
IMPORTANT: Pressure gauge accuracy is very critical
for this test. Do not make adjustments
to injection pump fuel delivery on the
machine to raise or lower boost
pressure.
New engine may not develop specified
boost pressure. Check after 50 hours of
operation.
11. If turbocharger boost pressure is low, check the
following:
Wrong fuel.
Restricted air filter elements.
Restricted fuel filter elements.
Incorrect injection pump timing.
1
Turbocharger boost pressure is reduced by 7% if using No. 1 fuel.
Continued on next page
CED,TX08227,3197
1912AUG983/4
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