MECHANICAL GENERAL MAINTENANCE INSTRUCTIONS - CONTINUED
RELIEVING HYDRAULIC SYSTEM PRESSURE - CONTINUED
Relieving Brake Hydraulic System Pressure.
Park machine on a smooth, level surface (TM 5-3805-291-10).
Lower work tool to ground (TM 5-3805-291-10).
Shut down engine (TM 5-3805-291-10).
Engage parking brake (TM 5-3805-291-10).
Turn engine start switch to ON position.
Depress brake pedal 30 times, pausing 2 seconds between each application.
Turn engine start switch to OFF position (TM 5-3805-291-10).
Before beginning a task, find out how much repair, modification, or replacement is needed to fix equipment as described
in this manual. Sometimes the reason for equipment failure can be seen right away and complete teardown is not neces-
sary. Disassemble equipment only as far as necessary to repair or replace damaged or broken parts.
All tags and forms attached to the equipment must be checked to learn the reason for removal from service. Check all
Modification Work Orders (MWOs) and Technical Bulletins (TBs) for equipment changes and updates.
In some cases a part may be damaged by removal. If part appears to be good, and other parts behind it are not defective,
leave it on and continue the procedure. Here are a few simple rules:
Do not remove dowel pins or studs unless loose, bent, broken, or otherwise damaged.
Do not pull bearings or bushings unless damaged. If you must get at parts behind them, pull out bearings or bush-
Replace all gaskets, seals, preformed packings, O-rings, cotter pins, spring pins, self-locking nuts, and lockwash-