PROPEL AND VIBRATORY VALVE TESTS AND ADJUSTMENTS
THIS WORK PACKAGE COVERS
Charge Pump System Pressure Test, Reverse Main Relief Valve Pressure Test, Forward Main Relief Valve Pressure
Test, Hydraulic Servo Neutral (Mechanical Center) Adjustment, Stabilized Control Valve Spool Neutral Adjustment,
Damped Control Head Adjustment
Tools and Special Tools
Tools and Special Tools - Continued
Indicator, Point Jet, Multitach II (Item 23, WP 0220
Shop equipment, general purpose (Item 30, WP
TM 5-3895-379-23P, Figures 71, 75 and 76
Drums chocked (TM 5-3895-379-10)
Measuring equipment, hydraulic (Item 28, WP
Parking brake engaged (TM 5-3895-379-10)
Do NOT remove hydraulic tank filler cap or disconnect or remove any hydraulic system line or fitting
unless hydraulic system pressure has been relieved. Hydraulic system pressure can be over 2500 psi (17,
237 kPa), even with engine and pump OFF. To relieve pressure, shut down engine, then SLOWLY
loosen hydraulic tank filler cap. After maintenance, tighten all connections before applying pressure.
Escaping hydraulic fluid under pressure can penetrate the skin, causing injury or death.
At operating temperature hydraulic oil is hot. Allow hydraulic oil to cool before disconnecting any
Oil is very slippery. Immediately wipe up any spills. Failure to follow this warning may cause injury.
Perform charge pump system pressure test first, before main (high pressure) relief valve tests.
The CB534B and CB534C Roller propel pumps are tested the same, except as noted.