CROSSOVER RELIEF VALVE ADJUST
WARN I N G
DO NOT disconnect or remove any hydraulic system hoses, tubes, or fittings unless
engine is shut down and hydraulic system pressure has been relieved. Escaping hydraulic
fluid under pressure can penetrate skin.
At operating temperature, hydraulic oil is hot.Allow hydraulic oil to cool before removing
any hydraulic fitting.
Wear protective eye covering and gloves.
Lubricating/hydraulic oils used in performa ce of maintenance can be very slippery.
Immediately wipe up any spills.
Failure to follow these warnings may result in injury or death to personnel.
C AU T I O N
Wipe area clean around hydraulic system, and cap all hydraulic hose ends along with
component connections during removal to protect against contamination. Failure to follow
this caution may cause damage to equipment.
Crossover relief valve operates as a makeup valve providing oil to drive loop for normal internal oil leakage within
system. It also provides additional oil for oil flow through piston motor flushing valve. Crossover relief valve also
absorbs the shock of hydraulic pressure spikes within the system. Hydrostatic drive is adjusted by crossover relief
valve. Refer to WP 0007 for detailed description of crossover relief valve.
1. Inspect hydraulic system for Class III leakage and damage. Hydraulic lines must be free from kinks, sharp
bends, and restrictions. Replace if condition found.
2. Turn ignition switch to OFF position (TM 5-2410-240-10).
4. Turn battery disconnect switch to ON position (TM 5-2410-240-10).
5. Turn ignition switch to ON position. Start ET and select machine control ECM.
N OT E
Wait at least 30 seconds in order for diagnostic codes to become active.
6. Monitor active diagnostic codes with ET. Check and record any active diagnostic codes. If diagnostic codes are
7. Operate machine until hydraulic system oil temperature is at least 104°F ± 9°F (40° ± 5°C).
8. Stop engine and remove cab floor plate (WP 0205) and bottom guards (WP 0147).