STEERING SYSTEM -624880048

TM 5-2420-222-20-1

STEERING SYSTEM

NOTE

Steering systems on loader backhoes with Serial Numbers 235786 thru 235999 have two

steering cylinders. Loader backhoes with Serial Numbers 319995 thru 342573 have one

steering cylinder. Both steering systems operate the same way. Steering system for

loader backhoes with Serial Numbers 319995 thru 342573 is shown.

STEERING WHEEL

Allows operator to steer loader backhoe by direct mechanical link through steering shaft to steering valve.

STEERING SHAFT

Provides direct mechanical link between steering wheel and steering valve.

STEERING VALVE

Consists of rotary spool and sleeve assembly in housing with gerotor gear set at one end.

Controlled by steering wheel by direct connection through steering shaft.

Directs flow of high pressure hydraulic fluid to one end of steering cylinder and routes return hydraulic fluid from

other end back to transmission case sump.

When high pressure hydraulic fluid is not available, such as when engine stalls, gerotor gear becomes hand-

operated pump, forcing hydraulic fluid through system to provide manual steering.

TA 242701

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