NOTE: By engaging the clutch with the gear shift lever in the neutral position, the
operator is able to control the RPM of the main shaft gears since they are regulated
by engine RPM. This procedure enables the operator to match the RPM of the main
shaft gears with those of the main shaft driven by the cranes rear wheels.
UPSHIFTING:
1.
Move the gear shift lever into neutral.
2. Start the engine and wait for the vehicle’s air system to reach normal line pressure.
3. Make sure the Range Selector Lever is DOWN in the Low Range position.
4. Make sure the Deep Reduction Button is in the REARWARD position. Or, in the
FORWARD position if you want to start in LL1 under adverse conditions.
5. With clutch disengaged, move the gear shift lever to the LO speed gear position.
Release clutch pedal to start moving. If Deep Reduction was selected, the crane will
be moving in LL1.
6. To upshift from LL1 to LO in the same gear shift lever position, move the Deep
Reduction Button to the REARWARD position and IMMEDIATELY release accelerator.
Depress the clutch pedal ONCE to break torque and reengage the clutch. The
transmission will shift from /Deep Reduction to Low Range when synchronous is
reached. Then accelerate.
7. To upshift form LO upshift from LO through 1st, 2nd and 3rd to 4th while in Low Range.
8. While in 4th and ready for the next upshift, PULL UP the Range Preselection Lever and
move the shift lever to the 5th speed gear position. As the shift lever passes through
neutral, the transmission will automatically shift from Low Range to High Range.
Never move the shift lever into the LO speed gear position after High Range
preselection, or at anytime transmission is in High Range.
DOWNSHIFTING:
1.
Move the gear shift lever, from 8th through 7th and 6th to 5th while in High Range.
T300-1_T500-1_T780
Operating Instructions
222 P/N 12261-683
REVISED: January 2015
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