Follow-on Maintenance -714670807

TM 5-2420-224-34

BACKHOE CONTROL VALVE, BOOM SECTION VALVE REPAIR (CONT)

CAUTION

Check

tags to be sure correct

relief

valve is installed in

correct

place, otherwise valve

section

will not work properly.

19. INSTALL six new packings (40, 41, 42, 43,

44, and 45), safety relief VALVE (46), and

pressure relief valve (47). TIGHTEN to 65-85

Ib-ft (85-115 N.m).

INSTALL SPRING (48) in disc (49) by turning

20.

spring (48).

INSTALL spring (48) and DISC (49) in valve

21.

body (12).

INSTALL new packing (50) and PLUG (51).

22.

REPEAT STEPS 20 thru 22 for plug (52).

23.

NOTE

Follow-on Maintenance:

Install boom section valve in

backhoe control valve (page

20-68