TM 9-2330-390-14&P
4-83.
TOP AND BOTTOM BEAMS AND POSITIONING CYLINDERS REPLACEMENT.
This Task Covers:
a.
Removal
Cleaning and Inspection
c.
Installation
b.
Initial Setup:
Equipment Conditions:
• Dolly set lowered, front and rear dollies detached
(see paragraph 2-8).
• Ends of bottom beam supported on wooden blocks.
• Wheels chocked.
• Engine starter switch set to OFF position (see
paragraph 2-20).
• Toolbox removed (front dolly) (see paragraph 4-103).
Tools/Test Equipment:
• General mechanic’s tool kit (item 30, Appendix G)
• Suitable lifting device
General Safety instructions:
Materials/Parts:
• Hydraulic fluid (Item 15, Appendix F)
• Grease (Item 19, Appendix F)
• Rags (Item 25, Appendix F)
• Dry cleaning solvent (Item 27, Appendix F)
• Marker tags (Hem 28, Appendix F)
• Masking tape, 2 in. (Item 32, Appendix F)
• Four preformed packings
• Six cotter pins
Personnel Required: Three
• Dry cleaning solvent is flammable and must not be used near an open flame. Use only in a well-ventilated area.
Use extreme caution when handling heavy parts. Lifting device is required when parts
weigh over 50 lb (23 kg) for a single person lift, over 100 lb (45 kg) for a two person
lift, and over 150 lb (68 kg) for a three or more person lift. Keep clear of heavy parts
supported only by lifting device. Failure to follow this warning may cause serious injury
or death to personnel.
NOTE
• Replacement procedures are the same for front and rear doilies. Rear doily
replacement is illustrated.
• Positioning cylinders for M1022A1 and M1022A1 with side lift kit are replaced the
same way.
• Hydraulic lines should be tagged before removal. Refer to paragraph 4-18 for
tagging instructions.
• Positioning cylinder ports should be plugged with masking tape or other suitable
means as lines are disconnected or fittings are removed. Refer to paragraph 4-22
for instructions.
• A suitable container should be used to catch any draining hydraulic fluid. Ensure that
all spills are properly cleaned.
4-222
