TM 5-1940-322-24
0031 00
STEERING SYSTEM MAINTENANCE (Contd)
NOTE
Three personnel are required to fill and bleed the steering system.
FILLING AND BLEEDING
NOTE
Have container ready to catch any fluid.
1.
Remove filler cap (6) from steering pump (8), and install adapter (5) and hose (4) in filler hole (7).
2.
Fill steering system with fluid using a funnel (10) on hose (4).
3.
Turn steering wheel (9) slowly in one direction until fluid level drops, check frequently, and top off
fluid level.
4.
Continue turning steering wheel (9) in same direction until resistance is felt. Top off fluid level.
5.
Attach a hose to bleed fitting (3) on steering cylinder (1).
NOTE
There may be a blowback of air in the hoses, which can expel fluid
with force from the filler hole or funnel. A rag held over the top will
prevent splashing onto the surrounding areas.
6.
Loosen nut (2) to open bleed fitting (3) on steering cylinder side that is under pressure.
7.
Continue turning steering wheel (9) in same direction until clear fluid emerges from bleed fitting (3).
Top off fluid level.
8.
Tighten nut (2) to close bleed fitting (3).
9.
Continue turning steering wheel (9) until steering cylinder (1) moves to full extension.
10.
Turn steering wheel (9) slowly in opposite direction, check frequently, and top off fluid level.
11.
Attach hose to bleed fitting (3) on steering cylinder (1).
12.
Loosen nut (2) to open bleed fitting (3) on steering cylinder side that is under pressure.
13.
Continue turning steering wheel (9) in same direction until clear fluid emerges from bleed fitting (3).
Top off fluid level.
NOTE
Steering system should be free of air and steering cylinder should
operate in both directions when steering wheel is turned.
Tighten nuts (2) to 44 lb-in. (5 Nm).
14.
15.
Repeat steps 1 thru 14, if all air is not removed.
16.
Remove funnel (10), hose (4), and adapter (5) from steering pump (8).
17.
Place filler cap (6) on steering pump (8).
18.
Close port hydrojet hatch (TM 5-1940-322-10).
0031 00-2
