Your Freightliner Dealership has the qualified technicians and equipment to perform this maintenance for you.They can also set up a scheduled maintenance program tailored specifically to your needs.

The purpose is to prevent the air-horn/engine-fan solenoid from activating when the system air pressure is too low. This switch closes at approximately 87 ±7 psi (600 ±48 kPa). The stop lamp pressure switch monitors pressure in the service brake system.

Jul 15, 2011 · There are three application supply air ports and one primary air port. The pressure switch is equipped with a shut-off valve, to shut off secondary air passing left to the pressure protection modules. This will allow air to the modules with constant air to be shut off when servic-ing. When the shut-off is operated, the air down stream will exhaust.

Oct 8, 2010 · Pressure Switch Module "A" contains pressure switches and, on the 12-18205-XXX version only, a 3-way shut-off valve. The shutoff valve allows the rest of the AMU modules and downstream compo- nents to be serviced without having to drain the air tanks.

Repair or replace the compressor after determining none of the preceding conditions exist. Compressor should be capable of building air system pressure from 85 to 100 psi (586 to 689 kPa) in 40 seconds with engine at full governed rpm. Mini- mum compressor performance is certified to meet Federal requirements by the vehicle manufacturer.

View and Download freightliner M2 Plus maintenance manual online. BUSINESS CLASS. M2 Plus trucks pdf manual download.

This pressure should be 20 to 45 psi (138 to Valve Inspection and 310 kPa). Lubrication 18. Close the drain cocks, recharge the system, and completely drain the primary reservoir. On ve- hicles equipped with a DRM or AD-IS with the air 1. Page 134 IMPORTANT: This procedure should be per- not turn, no further work is needed. If they turn, formed ...

Oct 5, 2009 · NOTE: Pressure Switch "A" (Fig. 1) is equipped with a shut-off valve that will stop air from flow-ing to the modules to the left of the switch. This valve can be used to shut off air to the modules. 3. If replacing Pressure Switch "A", drain the air reservoirs. If replacing any other module, turn the shut-off valve on the pressure switch to ...

M2 Lubrication and Fluid Level Check: 00–13 ; Noise Emission Controls: 00–15 ; Verification of Inspections Log: 00–16 ; 01 Engine . 01–00 Safety Precautions ; 01–01 Engine Drive Belt Inspecting ; 01–02 Engine Support Fastener Checking ; 09 Air Intake . 09–01 Air Cleaner Element Inspection and Replacement ; 13 Air Compressor . 13 ...

Air pressure falls below about 70 psi (483 kPa). Parking brake is set with the vehicle moving faster than two miles per hour. System voltage falls below 12 volts.