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Page Title:
Table III. Semitrailer specifications. - Continued |
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|  MIL-S-46777C
TABLE III. Semitrailer specifications (continued).
VMRS No.
Feature
Requirements
VMRS 17-008
Valve.
Provide metal valve caps w/elastomer seals for all tire assemblies.
VMRS 18-003-001
Wheel Assembly Disc.
Disc wheels per DOT FMVSS and TRA Year Book.
Tire and wheel assemblies inherently in-balance.
Disc wheels per SAE J694 10-hole heavy duty on-off road type having
standard industry off-set. Wheels not to exceed max. 050-in. radial
and laterial run-out (TIR) or Max. 120-in. oz. out of balance, to
prevent wheel tramp or drumming.
Wide base single type rim and disc made by the same mfgr. or
fabrication approved by rim mfgr.
For 18-22.5 tires, furnish size 22.5-14.00 wheels.
For 12R22.5 tires, furnish NWRA Wheel No. X-4932 size 22.5-8.25
wheels.
For 11.00-22 tires, furnish NWRA Wheel No. X-4927 size 22-8.0
wheels.
Hub, Rear-Wheel.
VMRS 18-004
Axle hubs per SAE J694, 10-stud, 11.25-in. BC, for disc wheels and
with out-board mounted brake drums, when drum type brakes are
furnished.
Bearing, Rear Wheel.
VMRS 18-004-002
Standardized tapered roller bearings with cups, bearings, and cones, all
matched in accordance with the bearing and axle manufacturer's
recommendations. Bearings per TMC-ATA Advisory AV6-15.
Standardized bearing sets selected from the following:
Position
Prefered Set
Optional Set
-
Bearing cone, inner
HM218248
JE9549
-
Bearing cone, outer
HM212049
JHM516849
-
Bearing cup, inner
HM218210
JE9510
-
Bearing cup, outer
HM212011
JHM516810
VMRS 18-004-011
Seal - Oil, Wheel.
Lube oil seals per TTMA RP No. 43.
VMRS 18-004-017
Dust Cap, Rear Wheel Hub.
Visual dust caps for oil lube level.
Group 30.
Electrical
Vehicle electrical system per DOT, California Vehicle Code, SAE
Handbook, TMC-ATA RP Manual, and TTMA RP No. 9 and No. 14.
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