LOWER UNIT
E
CHECKING THE LOWER UNIT
(FOR AIR LEAKS)
1. Check:
• Lower unit holding pressure
Pressure drops ➔ Check the seals and
components.
Checking steps:
CAUTION
Do not overpressurize the lower unit.
Excessive pressure may damage the oil
seals.
(1) Remove the gear oil level check screw.
(2) Install the pressure tester into the
check hole.
(3) Apply the specified pressure.
(4) The lower unit should hold the
specified pressure for 10 seconds.
Lower unit holding pressure:
100 kPa (1.0 kg/cm
2
, 14.2 psi) for 10
seconds
Pressure tester:
90890-06762
3-22