Park and shunt valve with integrated emergency braking valve for the service brake system, as well as a pressure protection valve for auxiliary devices (e.g. air suspension) for twin-line air brake equipment in trailer vehicles.

'Safe Parking' is an additional function which ensures that upon disconnection of the air supply line (red  coupling) the trailer parking brake is engaged.

Function - Installation - Inspection - Maintenance - Technical data - Symbol

Function

Valve	Shunt  Valve Black knob	Park Valve Red knob	Trailer coupled Yes/No	Operation Conditions	Service brake System	Park brake System
	pulled	pushed (must be manually pushed)	yes	Drive	released	released
	pulled	automatic pulled out	no	Trailer uncoupled/braked	Emergency function engaged	Safety function: Released via overload protection valve
	pushed	pushed	no	Shunting	released	released
	pushed	pulled	no	Parking (uncoupled)	released	engaged
	pulled	pulled	yes	Parking (coupled)	released	engaged

Warning - Danger!
Before starting the journey, the spring brake cylinder must be released manually by pushing the park valve.

Installation

• The TrCM+ is fixed to the vehicle chassis with two/three M 8 bolts.
• The control knobs must be easily accessible.
• Not used ports must be plugged.
• For painting/coating all open ports must be protected to avoid penetration of the paint/coat.
• For fittings / push-in fittings refer to the instructions of the respective manufacturer.

Inspection

1. System without pressure
   Shunt valve (black button) must be pushed in (securing the trailer vehicle previous to this test), park valve (red button) automatically pushed out.
2. Initial charging
   Apply pressure to port 1; the shunt valve (black button) must go into the operating position (jump out). The park valve (red button) remains pushed out.
3. Automatic emergency braking
   Lower the pressure at Port 1 to 0 bar; the port 21 emergency braking must activate automatically.
4. Pressure protection valve
   Instructions for adjustment may be found in the fitting instructions, order no.: 000 314 012.
5. Park brake valve (red button)
   Apply pressure to port 1. park valve (red button) automatically pushed out, push the park valve (red button) in, at least 5.0 bar in the supply reservoir, pull the park valve (red button), port 2 (spring brake system) must vent down to 0 bar, vehicle braked.

Maintenance

According to legal registrating country requirements or the statutory regulations of § 29 StVZO. If defects are discovered, either during examination of the vehicle or when travelling, the valve must be replaced.

The cage filter 029 000 409 in Port 1 must be replaced when soiled or damaged.

Technical data

For more technical information see TÜV report No. KO250.4E in the documentation page

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