ABS-MT-SH
M939 SERIES ANTI-LOCK BRAKE SYSTEM
MAINTENANCE SUSTAINMENT TRAINING; Student Handout ABS-MT-SH
ABS-MT-SH - Page 10 of 19
11
System Configuration-Post MWO
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PLUMBING
•
Rear axles are re-plumbed to allow for split
coefficient braking. Braking left-to-right versus
axle-to-axle
•
Inversion Valve Integrated into air system and
mounted in Step Box
•
Limiting Valve (LQ2) is plumbed with existing
hardware
•
Relay Valves are plumbed to operate with one
control line.
•
Double check Valve (#6) Relocated in vicinity of
Inversion Valve
•
Cross “T” plumbed in location where DC #1 was
moved (now DC#6)
•
Double Check Valve (#7) added to System.
Mounted on inlet of Spring Brake Tank
•
Air line mounted from governor “unload” port to air
dryer for purging dryer.
•
250psi relief valve added to high temp line for
supply air to air dryer
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