Case 921B Wheel Loader Operators Manual 9-26564 - PDF DOWNLOAD

Page 66

OPERATING INSTRUCTIONS

Transmission Operation

Changing Machine Direction

Template Name: OM_1_col Template Date: 1994_04_29

The transmission in this machine has four gears forward and three gears reverse. Always select the correct gear for the job. If you have frequent stalls (engine running at full throttle and the wheels not turning), select a lower gear.

You can change machine direction at any speed. If the transmission is in THIRD or FOURTH gear, the transmission will automatically shift to SECOND gear and then shift up at 2.5 second intervals until the selected gear has been reached. For smooth operation and operator comfort, reduce engine speed before changing direction.

Up-Shifts

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You can shift the transmission from a lower gear to a higher gear without reducing the machine speed or engine speed. If the gear to be selected is 2 or more higher than the present gear, the transmission will automatically shift gears at 2.5 second intervals until the gear selected has been reached.

Autoshift (P.I.N. JEE0052701and After) Push the switch on the left side of the switch to turn the switch ON, an indicator lamp on the switch will illuminate. The transmission will shift up from 2nd to the highest speed settling on the transmission lever. The transmission will down shift automatically under load from the highest gear lever setting to 2nd gear.

Down-Shifts

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The transmission can be shifted from FOURTH to FIRST gear without reducing machine or engine speed. If FIRST gear is to be selected from THIRD or FOURTH gear the transmission will down-shift to SECOND gear for approximately 1.2 seconds, and then shift to FIRST gear. For smooth operation and operator comfort, reduce engine speed before down-shifts. The transmission can be shifted automatically from SECOND gear to FIRST gear without reducing machine or engine speed using the down-shift button (Prior to P.I.N. JEE0052701). See Loader Operating Tips in this manual.

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