2010 US Mack Granite Series (GU Series) Operator's Manual

OWNER’S WARRANTY RESPONSIBILITIES:
As the motor vehicle engine owner, you are responsible for the performance of the required maintenance listed in this manual. Mack Trucks, Inc. recommends that you retain all receipts covering maintenance of your vehicle, but Mack Trucks, Inc. cannot deny warranty solely for the lack of receipts or for your failure to ensure the performance of all scheduled maintenance listed in other manuals which were supplied with your vehicle.

You are responsible for presenting your motor vehicle engine to a MACK dealer as soon as a problem exists. The warranty repairs should be completed in a reasonable amount of time, not to exceed 30 days. As the motor vehicle engine owner, you should also be aware that Mack Trucks, Inc. may deny you warranty coverage if your vehicle or a part has failed due to abuse, neglect, improper maintenance, or unapproved modifications.

Preferred Methods for Engaging T318(L)(LR) "Eighteenth" Gear (or any HI-range gear) for Output Shaft Driven Power Take-Off
Method #1
After positioning the vehicle for power take-off , and with vehicle wheels off the ground:

1. Shift the transmission to NEUTRAL.
2. Engage power take-off drive.
3. Move the range selector to HI range.
4. Disengage the engine clutch and select REVERSE.
5. Feather the clutch until the transmission range clutch engagement is heard.
6. Disengage the engine clutch.
7. Select 18th speed gear for T318LR.
8. Engage the clutch when power take-off is desired.

Method #2
After positioning the vehicle for power take-off , and with vehicle wheels on the ground:

1. Shift the transmission to NEUTRAL.
2. Move the range selector to HI range.
3. Disengage the engine clutch and select REVERSE.
4. Feather the clutch until the transmission range clutch engagement is heard.
5. Disengage the engine clutch.
6. Engage power take-off drive.
7. Select 18th speed gear for T318LR.
8. Engage the clutch when power take-off is desired.

Note: When making a SPLIT SHIFT from gear to gear, the splitter switch must not be actuated, either up or down, until the main box is in NEUTRAL. When making a SPLIT SHIFT in the same gear to a preselected gear, especially under a heavy load, the splitter will not shift until the driveline torque is relieved. This can be done by depressing the clutch pedal and releasing it, or by backing off the throttle and reapplying it. The splitter switch must not be actuated, either up or down, until IMMEDIATELY before the driveline torque is relieved. When making a RANGE SHIFT, it is important to preselect the range shift. This means that the range selector must be moved to its next position (up or down) BEFORE the gearshift lever is moved. Then move the gearshift lever through NEUTRAL to the next desired gear position. As the lever passes through NEUTRAL, the range shift will be completed.