TM 5-3805-290-23-2
BRAKE ACCUMULATOR REPLACEMENT - CONTINUED
0096 00
INSTALLATION - CONTINUED
WAR N I N G
Before operating equipment, secure the steering frame lock in the stowed position. DO NOT operate
machine with steering frame lock connected. Failure to lock steering frame lock into the stowed position
before operating can result in loss of steering and injury or death to personnel.
7.
Install panel between right cab door and engine access door (WP 0110 00).
8.
Secure steering frame lock in stowed position (TM 5-3805-290-10).
9.
Check hydraulic fluid level (TM 5-3805-290-10).
10.
Run engine until normal operating temperature is reached (TM 5-3805-290-10).
11.
Shut down engine (TM 5-3805-290-10).
12.
Check for leaks.
TESTING
WARN I N G
Dry nitrogen is only gas approved for use in accumulators. Charging with oxygen in accumulator will cause
explosion. Explosion can be eliminated by using nitrogen gas cylinders with standard CGA (Compressed Gas
Association, Inc.) No. 580 connectors. When nitrogen gas is ordered, make sure to order cylinders with CGA
No. 580 connectors.
DO NOT rely on color codes or other methods of identification to tell difference between nitrogen and oxygen
cylinders. In any application, never use adapter to connect nitrogen charging group to valve outlet used on
both nitrogen, oxygen, or other gas cylinders. BE SURE TO USE DRY NITROGEN (99.8% purity).
Failure to follow this warning may result in injury or death to personnel.
N OT E
This test checks cut-in pressure, cut-out pressure, nitrogen precharge, and pressure switch that indicates
low oil pressure.
1.
Stop engine.
2.
Engage parking brake (TM 5-3805-290-10).
3.
Press brake pedal 10 times until there is no brake oil pressure. Pause for 2 seconds between each application.
4.
Using communication adapter (Item 2, WP 0205 00), connect electronic systems test set (Item 91, WP 0205 00),
equipped with software kit (Item 81, WP 0205 00) to data link connector on machine.
5.
Observe pressure before starting engine. Oil pressure should be 0 psi (0 kPa).
6.
Start engine (TM 5-3805-290-10).
7.
Oil pressure will increase to maximum. Record this pressure. This is brake charging cut-out pressure of charging system
for brake accumulators. Correct cut-out pressure should be 2,300 50 psi (16,000 345 kPa).
8.
Apply service brakes repeatedly while engine is running.
9.
Verify pressure drops consistently.
10.
Record point when pressure begins to increase quickly. This is cut-in pressure brake charging. Cut-in pressure should be
1,400 50 psi (9,600 345 kPa).
11.
Shut down engine (TM 5-3805-290-10).
0096 00-5
