Trailer Guide Schematics Software

Allgemein

Leveling Valve - With 2nd Ride Height - General

Setting 2nd ride height

The 2nd ride height can be set in accordance of the respective angle (Deflection) of each valve. The angle here refers to the deflection of the control lever from the horizontal, in degrees. The body height changes (mm) as a function of the lever length; see chart “2nd ride height”.

Chart for 2nd ride height

  Linkage distance (mm)  
Deflection 60 80 100 120 140 160 180 200 220 240 260 280 300 320  
α = 10° 10 14 17 21 24 28 31 35 38 42 45 49 52 56 Height change (mm)
α = 16° 17 22 28 33 39 44 50 55 61 66 72 77 83 88 Height change (mm)
α = 20° 21 27 34 41 48 55 62 68 75 82 89 96 103 109 Height change (mm)
α = 35° 34 46 57 69 80 92 103 115 126 138 149 161 172 184 Height change (mm)

Inspection

  • Test for operation and leaks.
  • The pressure should neither rise nor fall at the delivery ports in the neutral position.
  • Check the linkage moves freely and is in good condition, replace if bent or welded.
  • Replace hardened or brittle rubber parts.

Maintenance

  • If defects are noted during vehicle examinations or when driving, then the unit should be exchanged.
  • When working with high pressure cleaners a distance of at least 50 cm should be observed.
  • Missing exhaust caps are to be renewed.

Technical data

Medium Air
Operating pressure, dynamic 13 bar
Max. permissible bellow pressure 20 bar
Working range (charging / discharging) 45°
Thermal range of application - 45° ... + 85°C
Operating side left and right
Tightening torque ports (thread M12x1.5) 12 - 15 Nm
Tightening torque for fixing the body 20 - 22 Nm
Tightening torque for fixing
the linkage (wrench size 10)		 8 Nm
By rotating the linkage around 180° 
the same function will be achieved 
within a tolerance		 1st ride height 3.5°
2nd ride height 4.5°
Dead angle at p1 = 8 bar, p2 = 7 bar 1st ride height 2°
2nd ride height 3.5°
Ports 1
 Supply
Ports 21, 22
 Delivery
Port 3 Exhaust
Port 4 Control

Sectional drawing 612 046 xxx

Ports: 1 - Reservoir / 21,22 - Suspension / 3 - Exhaust / 4 - Control

Symbol

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