TRANSMISSION SYSTEM

TM 5-2420-222-20-1

TRANSMISSION SYSTEM

SPEED GEAR ASSEMBLY (REVERSER) CONTROL LEVER

Connected by mechanical linkage to speed gear assembly (reverser) clutch control valve.

Held in neutral when neutral latch is engaged.

Selects forward drive when neutral latch is disengaged and lever is moved forward.

Selects reverse drive when neutral latch is disengaged and lever is moved rearward.

Allows operator to change direction of loader backhoe travel under full load without disengaging clutch or shifting

transmission gears.

SPEED GEAR ASSEMBLY (REVERSER) CONTROL LEVER LINKAGE

Connects speed gear assembly (reverser) control lever to speed gear assembly (reverser) control valve.

When transmission range shift lever is in high range (II) on loader backhoes with Serial Numbers 235786 thru

235999, linkage is engaged by high speed lockout pin to prevent shifting speed gear assembly (reverser) into

reverse drive.

SPEED GEAR ASSEMBLY (REVERSER) CLUTCH CONTROL VALVE

Clutch control pressure valve spool connected by linkage to loader backhoe clutch pedal.

When clutch pedal is pushed down to disengage engine flywheel clutch, clutch control pressure valve spool cuts

off hydraulic pressure to clutch control shift valve spool and opens engaged clutch pack pressure line to sump to

neutralize speed gear assembly (reverser) clutch packs, disengaging speed gear assembly (reverser).

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