TM-9-2320-338-10

WARNING

When REAR air pressure gauge reads zero, vehicle braking capability is

greatly reduced. Extra care must be taken to avoid collision. Failure to

comply may result in injury or death to personnel.

NOTE

If both FRONT and REAR air pressure gauges read zero, skip to Step

(4).

If FRONT air pressure gauge (2) is at zero and REAR air pressure gauge (3) shows

normal air pressure of 100 to 130 psi (7 to 9 bar), complete the following:

Continue operation of vehicle. Brakes on No. 3 and No. 4 axles and trailer (if

applicable) will operate. Use caution, and comply with the following:

(1) Leave additional distance between vehicles.

(2) Apply service brake pedal (4) earlier than usual when slowing vehicle.

(3) Downshift as necessary when slowing vehicle.

WARNING

Do not use engine brake when vehicle is on slippery surface. If

engine brake is used incorrectly, vehicle may skid out of control.

Failure to comply may result in injury or death to personnel.

(4) If necessary to slow vehicle, set engine brake high/medium/low switch (5) to

low position and set engine brake on/off switch (6) to on. ENGINE BRAKE

ENABLE indicator (7) will illuminate.

(5) Notify field level maintenance as soon as possible.

If both FRONT (2) and REAR (3) air pressure gauges read zero, complete the following:

Look for a place to stop vehicle without blocking other traffic.

Downshift as needed to control vehicle speed until place is found to stop.

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