4-15. AUXILIARY POWER UNIT - Continued
With no load, adjust minimum idle speed
With no load, adjust maximum idle speed
to 3780 rpm.
With engine running at full load, adjust
gap between lever B and plunger C to
0.002 in. (0.05 mm).
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.
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
When adjustment is complete, Install
engine on base as detailed in para. 4-15.1
Install APU in truck as detailed in para. 4-