TM-5-3805-254-14-P-1
TRUCK, DUMP, 20 TON, 6X4, ON-OFF HIGHWAY 71,000 GVW, IHC MODEL F-5070 (CCE)
TECHNICAL MANUAL; OPERATOR'S, ORGANIZATIONAL, DIRECT SUPPORT, GENERAL SUPPORT AND DEPOT MAINTENANCE MANUAL (INCLUDING REPAIR PARTS INFORMATION AND SUPPLEMENTAL MAINTENANCE INSTRUCTIONS)
AUGUST 1980
TM-5-3805-254-14-P-1 - Page 19 of 590
OPERATION
thereby providing an effective emergency brake.
If the chassis is equipped with a protected reservoir the
parking brake will not automatically apply.
The parking brake cylinder differ from the service brake
cylinders in that the parking brake cylinder apply the
brakes by spring pressure and release them by air
pressure where as the service brake cylinders apply the
brakes with air pressure and release them by spring
pressure.
The parking brake unit requires approximately 60
pounds air pressure before brakes can be released.
Manual Release
In event of air failure on the road or for towing the
vehicle, the spring brake can be released by removing
breather cap and backing off (counterclockwise) the
release bolt approximately 1-3/4" until brake shoes are
free from brake drums.
IMPORTANT:
Before releasing spring brakes, be sure
vehicle is properly blocked so that when brakes are
released vehicle cannot move.
To Reset Brakes
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