Windshield Washer Reservoir - Mack Granite GU Series Operator's Handbook Manual

OPERATION 117
Initial Valve Adjustment Intervals
Refer to the Maintenance and Lubrication Manual (21394653) for detailed
information concerning the Initial Valve Adjustment Interval.

WINDSHIELD WASHER RESERVOIR

As shown in the drawing below, the windshield washer reservoir is located
under the hood, against the rider-side cab bulkhead.
C0029836
On chassis equipped with the snowplow option, the windshield washer
reservoir will be located on the back of the cab, driver-side.