TM 5-3805-292-23
0006
ELECTRICAL TROUBLESHOOTING - EC001 HYDRAULIC CHARGE PRESSURE IS TOO LOW
0006
WARNING
To avoid injury, eye protection and acid-resistant gloves must be worn when working around batteries. DO NOT
o
smoke, use open flame, make sparks or create other ignition sources around batteries. If a battery is giving off
gases, it can explode and cause injury to personnel. Remove all jewelry such as rings, ID tags, watches, and
bracelets. If jewelry or a tool contacts a battery terminal, a direct short will result in instant heating or electric
shock, damage to equipment, and injury to personnel.
Sulfuric acid contained in batteries can cause serious burns. If battery corrosion or electrolyte makes contact with
o
skin, eyes, or clothing, take immediate action to stop the corrosive burning effects. Failure to follow these
procedures may result in death or injury to personnel.
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EYES. Flush with cold water for no less than 15 minutes and seek medical attention immediately.
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SKIN. Flush with large amounts of cold water until all acid is removed. Seek medical attention as required.
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INTERNAL. If corrosion or electrolyte is ingested, drink large amounts of water or milk. Follow with milk of
magnesia, beaten egg, or vegetable oil. Seek medical attention immediately.
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CLOTHING/EQUIPMENT. Wash area with large amounts of cold water. Neutralize acid with baking soda or
household ammonia.
CALIFORNIA PROPOSITION 65 WARNING: Battery posts, terminals, and related accessories contain lead and
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lead components. These chemicals are known to the State of California to cause cancer and reproductive harm.
Wash hands after handling.
WARNING
DO NOT disconnect or remove any hydraulic system line or fitting unless engine is shut down and
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hydraulic system pressure has been relieved. Tighten all connections before applying pressure.
Escaping hydraulic fluid under pressure can penetrate the skin.
Use a piece of cardboard, newspaper, or wood to check for pressurized leaks, to prevent fluid
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penetrating the skin.
Contact with engine/hydraulic oil can damage skin. Wear gloves when handling engine/hydraulic oil. If
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oil contacts skin, wash it off immediately. Failure to follow this warning may result in injury to personnel.
Remove charge pressure switch (WP
Check for continuity between charge
Continuity in
pressure switch connector 30-A,
closed position,
Replace charge pressure switch
circuit 178AU (B), switch side and 30-
NO
no continuity in
B, circuit 262A (Y), and switch side in
open position?
both open (engine on) and closed
positions (engine off) (WP 0175,
Frame 19. Miscellaneous Circuits).
YES
Disconnect instrument panel (IP) (WP
Check for continuity between charge
pressure switch 30-B, circuit 262A (Y)
Perform Open Harness Test for circuit
Continuity
harness side, IP connector C23-17,
NO
present?
262 (WP 0173).
and circuit 262D (Y) harness side
and Frame 19. Miscellaneous
Circuits).
YES
N
CONTINUED
