Procedure:
1. Install two pressure gauges, one at the forward clutch pressure tap (1) and the other at the reverse clutch pressure tap (2), as indicated here.
2. Also install a pressure gauge at the lubrication pressure tap (3), as shown here.
3. Shift the speed shift lever to NEUTRAL and the directional control lever to FORWARD. Record the pressure readings for the forward clutch, reverse clutch, and lubrication pressures. Compare to SIS specifications. The pressure at the reverse clutch should be 0 kPa (0 psi).
4. Now shift the directional control lever to REVERSE, while maintaining the speed shift lever in NEUTRAL. Record the pressures again and compare to SIS specifications. The pressure at the forward clutch should now be 0 kPa (0 psi).