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Page Title: BACKHOE MAIN FRAME MAINTENANCE.
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TM 5-2420-222-34 15-4. BACKHOE MAIN FRAME MAINTENANCE. This Task Covers: a. Removal d. Repair b. Disassembly e. Assembly c. Cleaning and Inspection f. Installation Initial Setup: Equipment Conditions: Materials/Parts: Backhoe swing frame removed (see para- Rags (Item 28, Appendix B) graph 15-3). Dry cleaning solvent (Item 31, Appendix B) Backhoe valve box removed (see TM 5-2420- Four cotter pins 222-20). Four lockwashers Jaw control (direct linear) valve bracket removed (see TM 5-2420-222-20). References: Rear tire and wheel assemblies removed (see TM 2420-222-20). TM 5-2420-222-20 Right platform removed (see TM 5-2420-222-20). TM 9-237 Left platform removed (see TM 5-2420-222-20). Left and right fenders removed (see TM 5-2420- Personnel Required: Three 222-20). General Safety Instructions: Tools/Test Equipment: Dry cleaning solvent is flammable and must not be General mechanic's tool kit used near open flame.  Use only in a well-ventilated Field automotive shop set area. a. REMOVAL 1. Position two jackstands under frame near rear axles. WARNING 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. 2. Using lifting device, support main frame (1). 3. Remove four screws (3), lockwashers (4), and two plates (2) from main frame (1).  Discard lockwashers. TA701646 15-17

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