TM-9-2350-311-20-2

HOWITZER, MEDIUM, SELF-PROPELLED, 155MM; M109A2, M109A3, M109A4 AND M109A5

TECHNICAL MANUAL; UNIT MAINTENANCE MANUAL FOR CAB, ARMAMENT, SIGHTING AND FIRE CONTROL, ELEVATING AND TRAVERSING SYSTEMS AND ASSOCIATED COMPONENTS

DECEMBER 1993

  TM-9-2350-311-20-2 - Page 168 of 828

TM 9–2350–311–20–2
Change 2
3–57
1.
Check pressure of nitrogen charge in manual
pump accumulator assembly (para 6–9).
2.
Charge if pressure is not 75–90 psi (517–620
kPa) (para 19–3).
3.
Check to see that charge holds.
Does accumulator hold charge?
C
Replace manual elevation
pump (para 6–15). If mal-
function persists, notify
support maintenance.
Attempt to elevate and depress the system using
manual elevating hand pump.
Does cannon elevate or depress manually?
yes
no
D
Verify fault is corrected.
Continue normal opera-
tions.
CONTINUED FROM STEP B
END OF TASK
yes
no
Replace accumulator as-
sembly (manual pump)
(para 6–9).
SIDE VIEW
MANUAL ELEVATING
HAND PUMP
MAIN
ELEVATION
CONTROL
ACCUMULATOR
ASSEMBLY
(MANUAL PUMP)


Back to Top