TM 9-2330-392-14&P
4-72
Change 2
4-30
MASTER CYLINDER REPLACEMENT.
This task covers:
a. Removal
b. Installation
Initial Setup:
Equipment Conditions:
• Handbrakes applied.
• Wheels chocked (para 2-8.1).
• Safety chains removed (para 4-35).
Materials/Parts:
None
Tools/Test Equipment:
• General mechanics tool kit
• Common No. 1 shop set
a.
REMOVAL
WARNING
Eye injury may result if brake fluid comes in contact with eyes. Always wear eye protection when
working with brake fluid. Failure to follow this warning may result in injury to personnel.
NOTE
Master cylinder orifice (4) requires a 12 mm-wrench.
1.
Disconnect fitting (6) on flex brake line (5) from master cylinder orifice (4). Install temporary plug in flex brake
line fitting (6).
2.
Remove master cylinder cap (13) from master cylinder assembly (7).
3.
Remove master cylinder protective cover (2) from actuator housing (1), then reinstall master cylinder cap (13).
4.
Remove two nuts (8), washers (9), springs (10), and capscrews (3) securing master cylinder (7) to master cylin-
der mounting plate (11).
5.
Carefully remove master cylinder (7) from master cylinder mounting plate (11) and push rod assembly (12).
b.
INSTALLATION
1.
Carefully install master cylinder (7) on push rod assembly (12) and master cylinder mounting plate (11).
2.
Install two capscrews (3), springs (10), washers (9), and nuts (8) securing master cylinder (7) to master cylinder
mounting plate (11). Tighten nuts (8) until snug to shoulder. Tighten capscrews (3) and nuts (8) compressing
springs (10) to a measurement of 3.25 in. +/- 0.0625 in. (1/16 in.).
3.
Remove master cylinder cap (13) from master cylinder (7).
4.
Install master cylinder protective cover (2) on actuator housing (1).
5.
Install master cylinder cap (13) on master cylinder (7).
6.
Remove temporary plug from flex brake line fitting end (6).
NOTE
Master cylinder orifice (4) requires a 12 mm-wrench.
7.
Connect flex brake line (5) to master cylinder orifice (4). Tighten flex brake line fitting end (6).
