Vauxhall Workshop Service and Repair Manuals

Pressure Data for Brake Proportioning Valve Check (except Model 71, Combo)  

Valve Type	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)
Pressure-dependent	3/30	500 (5)	500 (5)
		6000 (60)	3900 ± 200 (39 ± 2)
		10000 (100)	5100 ± 300 (51 ± 3)

Valve Type	Ident. No. on Valve Housing	Input overpressure, read off manometer on front axle in kPa (bar)	Output overpressure, read off manometer on rear axle in kPa (bar)
Twin (load-dependent)	8/5	6000 (60)	3500 to 3800 (35 to 38)
		10000 (100)	5300 to 5600 (53 to 56)