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Page Title:
Table III. Semitrailer specifications. - Continued |
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|  MIL-S-46777C
TABLE III. Semitrailer specifications (continued).
VMRS
Feature
Requirements
VMRS 13
Brakes.
Per DOT FMVSS, DOT FMCSR, and California Vehicle Code.
Straight air service and emergency-parking system. System
withstand severe service including high speed, off-road, and
mountainous travel and including creek bed immersion usage.
Provide priority to brake system over any auxiliary air system
use.
Disc Brakes.
VMRS 13-001-026
High heat sink type having cooling features.
Rear Brakes & Drums.
VMRS 13-002
Disc type or wedge or S-cam drum type.
Components protected from damage.
All components located above the bottom of the brake disc or
brake drum.
Discs, wedges, cams and roller pins, as a minimum, phosphate
coated, stainless steel, or hard chrome plated and having silicone
high temp compound on brake bearing surfaces (except wedges
and S-cams and rollers) to prevent corrosion malfunction.
Provide drum forward rotation and S-cam rotation in the
identical direction on all axles.
Anchor-Rear Brake Shoe.
VMRS 13-002-004
Drum brakes of single or double anchor type providing ease of
maintenance features.
Lining Rear Brake.
VMRS 13-002-014
Lining per SAE J866, Code EE, EF, or FF, having identical
friction value on all lining segments;
Lining selected from the FMS Automotive Data Book. Lining
rated per DOT procedures and technically for the logging
vocation or mountainous duty service.
Wet lining fade not less than 65-percent of the dry friction
baseline value, per SHE J786 test code.
Drum Rear Brake.
VMRS-13-002-023
Drum brakes of outboard mounted type providing brake
maintenance capability without hub removal.
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