Acura 3.5 RL Manual page 795

Pushrod Clearance Adjustment
NOTE: Master cylinder pushrod-to-piston clearance must
be checked and adjustments made, if necessary, before
installing the master cylinder.
1. Set the special tool on the master cylinder body;
push in the center shaft until the top of it contacts the
end of the secondary piston by turning the adjusting
nut.
NOTE: '96 - 97 models shown.
PUSHROD
ADJUSTMENT
GAUGE
07JAG-SD40100
CENTER
SHAFT
SECONDARY PISTON
2. Without disturbing the center shaft's position, install
the special tool upside down on the booster.
3. Install the master cylinder nuts, and tighten them to
the specified torque.
4. Connect the booster in-line with a vacuum gauge 0 -
101 kPa (0 - 760 mmHg, 30 in Hg) to the booster's
engine vacuum supply, and maintain an engine
speed that will deliver 66 kPa (500 mmHg, 20 in Hg)
vacuum.
5. With a feeler gauge, measure the clearance between
the gauge body and the adjusting nut as shown.
Clearance: 0 - 0.2 mm (0 - 0.008 in)
PUSHROD
ADJUSTMENT GAUGE
07JAG-SD40100
CLEARANCE
ADJUSTING NUT
VACUUM GAUGE
(Commercially available)
0 - 101 kPa
(0 - 760 mm.Hg, 30 in.Hg)
MASTER CYLINDER NUT
15 N-m (1.5 kgf-m, 11 Ibf-ft)
ADJUSTING NUT