Pressure Test - Komatsu 830E Shop Manual

PRESSURE TEST

After rebuild is complete, suspension assembly should
be tested for leakage.
When pressure testing, suspension must not be
allowed to extend. Assembly must be mounted in a
container that is adequate to prevent piston exten-
sion.
1. Using air or nitrogen, pressurize suspension to
1100 ±200 psi (7585 ±1380 kPa) through the
charging valve and maintain pressure for twenty
(20) minutes minimum.
No leakage is permissible.
2. Release pressure from suspension assembly and
remove from containment structure. Do not
remove charging valve.
3. Install charging valve guard.
4. If suspension is to be stored, install suspension
oil prior to storage. (Refer to "Front Suspension
Oiling", this section.)
5. Protect exposed chrome surface to prevent dam-
age during storage and handling.
6. Protect remaining exposed, machined surfaces
with a rust preventive grease.
H2-8 Front Suspensions H02016