TB-9-1000-234-13
EXERCISING OF RECOIL MECHANISMS AND EQUILIBRATORS
TECHNICAL BULLETIN
SEPTEMBER 2010
TB-9-1000-234-13 - Page 18 of 52
TB 9-1000-234-13
2-2
f.
Block and Tackle-Weapon in Firing Position/Direct Pull Against Spades.
For M119 Series
Howitzer, refer to TM 9-1015-252-10 to place weapon in firing position and TM 9-1015-252-23 to
exercise recoil mechanism.
g.
Power Winch.
Recoil mechanisms on self-propelled weapons listed in table 2-1 may be
exercised using a power winch. See paragraph 1.3d.
h.
Oil Pump M3 (Howitzers, excluding M109 Series and M110A2).
(1)
Place cannon at approximately zero mils.
(2)
Clean accumulated dust and dirt from around the filling plug in the recoil mechanism.
(3)
Assemble purge pipe to the liquid releasing tool. Remove filling plug from recoil
mechanism. Make sure the valve in purge pipe is closed and install liquid releasing tool
with purge pipe into filling hole.
Do not permit cannon to slide more than one foot out-of-battery since self-elevation
may result if cannon slides beyond this point.
(4)
Elevate the Howitzer sufficiently to allow cannon to slide out-of-battery as additional fluid is
released. Open the valve allowing the fluid to drain into container. Close the valve. Emit
the cannon to slide out-of-battery one foot, then close the valve. It may be necessary to
use a pry bar to start the cannon to recoil.
(5)
Level the cannon and remove the liquid releasing tool.
(6)
Filter the fluid drained from the recoil mechanism into the oil pump M3 if it is considered
suitable for reuse. Install the proper fluid filling plug adapter into the filling hole and loosely
attach the oil hose and oil pump. Operate the pump slowly until the line is purged of air
and tighten all connections. Continue pumping until the cannon returns to battery and fluid
reserve is established.
NOTE
Make certain the oil pump is not allowed to become empty during operation to avoid
pumping air into the system.
(7)
To exercise the floating piston pump, add 50 strokes into the recoil mechanism for the
105-mm Howitzer M101 and M101A1. Add 100 strokes for the 155-mm Howitzer M114
Series and for the 8-inch Howitzer M115.
(8)
Repeat the above procedure two more times to establish the correct fluid reserve
according to the pertinent technical manual.
(9)
Close the trails and return the weapon to its original condition.
CAUTION
Back to Top
