MWO-9-2330-390-35-1
MODIFICATION WORK ORDER
MODIFICATION OF M1022A1 DOLLY SET; POSITIONING TUBE REINFORCEMENT
DECEMBER 2002
MWO-9-2330-390-35-1 - Page 43 of 48
MWO 9-2330-390-35-1
D-1
APPENDIX D:
HYDRAULIC SYSTEM BLEEDING
This Task Covers:
Bleeding
Initial Setup:
Equipment Conditions:
•
Front and rear dollies lowered and
detached
Materials/Parts:
•
Hydraulic fluid (MIL-H-5606)
•
Rags
Tools/Test Equipment:
•
Suitable lifting device, 5000 lb
capacity minimum.
WARNING
•
Top beams of front and rear dollies must be secured with a suitable lifting device
throughout entire bleeding procedure if bleeding hydraulic system of a dolly set
with side lift kit when ONLY side lift positioning cylinders were replaced.
Top and
bottom beams must also be kept vertical.
Until bleeding is complete, air in the
hydraulic system may cause erratic movement when extending and retracting
hydraulic cylinders.
Failure to support top beams and to keep tops and bottoms
beams vertical may cause an accident resulting in serious injury or death to
personnel.
CAUTION
•
DO NOT allow dirt or dust to enter hydraulic reservoir.
Damage to hydraulic system
will result.
NOTE
•
This procedure is used to bleed the hydraulic system of a dolly half without side lift
kit OR a dolly set with side lift kit when only side lift positioning cylinders were
replaced.
BLEEDING
1.
Remove safety pin (84) and hitch pin
(85) and unlock pivoting tray lockout
brace (86) from lower bracket (87).
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