TM 5-3805-262-34
SHEET 11 OF 21
Diesel fuel may spill from fuel
injector lines while engine is
cranking. Collect spillage in
metal container and wipe fuel
from engine using clean cloths.
Diesel fuel is highly combus-
tible. Do not smoke or allow
open flames or sparks into the
area. Death or severe injury may
result if personnel fail to ob-
serve this precaution. If you
are burned, obtain medical aid
immediately.
NOTE
Engine cranking speed must be approximately 200 rpm for reliable test
results.
If necessary, charge batteries to obtain proper cranking speed
(refer to TM 5-3805-262-20).
(e) Tell assistant to crank engine starter.
(f) When compression gage pointer stops moving, record indication and tell
assistant to stop cranking engine.
(g) Press vent button to relieve compression gage pressure.
(h) Repeat steps (e) thru (g) above to record several compression checks for
cylinder under test.
(i) Remove compression gage and compression gage adapter.
(j) Repeat steps (b) thru (i) above to record compression for each remaining
cylinder.
(k) Compare recorded compression for each cylinder with minimum compression
listed below. Recorded compression for each cylinder should be equal to
or greater than listed compression:
Altitude above
sea level (feet)
o
1,000
2,500
5,000
7,500
10,000
Compression
(psig)
400
384
360
320
280
240
3-13
