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 TM 5-2420-222-20-1
HYDRAULIC SYSTEM
NOTE
Hydraulic systems on all loader backhoes are similar and operate basically the same way.
Hydraulic system for loader backhoes with Serial Numbers 319995 thru 342573 is shown.
See Section XX, Hydraulic and Fluid Systems (page 2-1189), for hydraulic system
diagrams.
TRANSMISSION CASE
Considered part of transmission system.
Acts as hydraulic fluid reservoir for all hydraulic system components.
SPEED GEAR ASSEMBLY (REVERSER) CLUTCH CONTROL VALVE
Considered part of transmission system.
Clutch pressure valve spool routes excess hydraulic fluid through oil line to hydraulic pump.
CLUTCH CONTROL VALVE-TO-HYDRAULIC PUMP INLET OIL LINE
Routes hydraulic fluid from speed gear assembly (reverser) clutch control valve, and oil filter relief valve-to-clutch
control valve adapter oil line, to hydraulic pump inlet.
TA242703
1-42
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