TM 9-2330-267-14&P
4-36. BLEEDING HYDRAULIC BRAKE SYSTEM.
This Task Covers:
a.
Manual Bleeding
b.
Pressure Feed Filler Bleeding
Initial Setup:
Equipment Conditions:
Materials/Parts:
s Trailer connected to towing vehicle.
l Master cylinder serviced (para 4-33).
l Brake fluid (Item 3, Appendix E)
s Dry cleaning solvent (Item 9, Appendix E)
Tools/Test Equipment:
l Rags (Item 18, Appendix E)
s General mechanic’s tool kit
l Plastic tube
c Pressure bleeder
l One quart (0.951) container
Personnel Required: Two
a.
MANUAL BLEEDING
WARNING
Dry cleaning solvent P-D-680 is toxic and flammable. Always wear protective goggles
and gloves, and use only in a well-ventilated area. Avoid contact with skin, eyes, and
clothes, and DO NOT breathe vapors. DO NOT use near open flame or excessive
heat. The solvent’s flash point is 100°F-138°F (38°C-59°C). If you become dizzy
while using cleaning solvent, immediately get fresh air and medical help. If solvent
contacts eyes, immediately wash your eyes and get medical aid.
NOTE
. Ensure that fluid level in master cylinder Is within ½ in. (13 mm) from top of master
cylinder at all times during task to avoid allowing air to enter hydraulic brake system.
l Plastic tube should be approximately 18 in. (46 cm) long.
1.
Clean bleeder valve (1), using dry cleaning
solvent and rag.
2.
Attach plastic tube (3) to bleeder valve (1) and
place other end of plastic tube in jar (2).
3.
Add 1 in. (2.5 cm) of brake fluid to jar (2).
4.
Open bleeder valve (1) by turning ¾ turn counter-
clockwise. Have assistant depress brake pedal
until air bubbles no longer appear in jar (2).
5.
Close bleeder valve (1) and release brake pedal.
TA507030
4-64
