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TM 5-2420-222-20-2
HYDRAULIC BRAKE SYSTEM BLEEDING
This task covers:
Bleeding (page 2-870)
INITIAL SETUP
Tools
Materials/Parts
Knife, pocket
Fluid, hydraulic (LO 5-2420-222-12)
Tubing, nonmetallic (Appendix D)
Packing, filler plug
Wrench, box, 3/8-inch
Rags, wiping (item 21, Appendix C)
Wrench, open-end, 1 112-inch
Personnel Required
Two
ACTION
LOCATION
ITEM
REMARKS
NOTE
Both brakes are bled the same way. Left brake is shown. Repeat procedure for right brake as needed.
BLEEDING
NOTE
If it is not desirable to run engine at this time, skip step 1.
1.
Loader backhoe
Engine
a.
Start and run at high idle for approx-
imately 2 minutes (TM 5-2420-222-10).
This will allow transmission lubri-
cating system to fill hydraulic
cylinder.
b.
Shut down (TM 5-2420-222-10).
NOTE
If step 1 was performed, skip steps 2 thru 5.
2.
Operator’s
Right platform
Remove (page 2-1079).
compartment
3.
Hydraulic
Filler plug (2) with
a.
Using clean rag, clean area around
cylinder (1)
assembled packing (3)
plug (2).
b.
Using 1 1/2-inch open-end wrench,
unscrew and take out.
Do not get rid of packing at this time.
2-870
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