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TM 5-4210-220-12
4-15. AUXILIARY POWER UNIT - Continued
(8)
With no load, adjust minimum idle speed
to
1300
rpm
(Use
mechanical
tachometer).
(9)
With no load, adjust maximum idle speed
to 3780 rpm.
(10)
With engine running at full load, adjust
gap between lever B and plunger C to
0.002 in. (0.05 mm).
(11)
If dynamometer is not available, adjust by
quick accelerations of engine. If engine is
sluggish and makes no smoke, turn
plunger C outwards. If engine smokes
heavily, turn plunger C inwards.
(12)
If
on
dynamometer,
check
fuel
consumption. Should be 6.1 cu in. (100
ml) in 190-200 sec with engine running at
3600 rpm delivering 6.5 hp (4.78 kW) (If
engine has been completely rebuilt, do
not carry out this test until engine has
operated at various low loads for at least
10 hours).
(13)
When adjustment is complete, Install
engine on base as detailed in para. 4-15.1
ASSEMBLY.
(14)
Install APU in truck as detailed in para. 4-
15.1, INSTALLATION
4-191
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