Vauxhall Workshop Service and Repair Manuals

Pressures for Brake Proportioning Valve - Check for Estate and Delivery Van (as of MY '95)  

Engine version or model	Ident. No. for Lead and Switch-over pressure at Valve Housing	Input overpressure, read off manometer on front axle in kPa (bar)	Output overpressure, read off manometer on rear axle in kPa (bar)
16 LZ2	0,45/20-60 1)	500 (5)	500 (5)
		6000 (60)	3800 ± 200
			(38 ± 2)
		10000 (100)	5600 ± 400
			(56 ± 4)
X 16 XEL,	0,45/2.7-7.5 1)	500 (5)	500 (5)
X 20 XEV		6000 (60)	4185 ± 200
			(41,9 ± 2)
		10000 (100)	5985 ± 300
			(59,9 ± 3)

1)  The highest change-over pressure is achieved when loading up to the maximum permissible weight.