Section 250-0280
SM 1945 4-00
3
* * * *
Braking System - Relay Emergency Valve
7. Secure relay emergency valve (1) to its mounting
using locknuts (2) and washers (3).
8. Remove blanking caps from air lines and
install lines to relay emergency valve (1) as identified
during removal.
9. Place master switch in the 'On' position, start the
engine and allow air pressure in the tanks to build up
to correct operating pressure. Check for leaks at air
lines and tighten as required.
10. Remove wheel blocks.
MAINTENANCE
Inspect the relay emergency valve regularly for any
signs of leakage or damage and repair/replace as
required.
Note: Limited repair of the relay emergency valve is
by replacement of parts only. Refer to vehicle Parts
Book for part numbers of kits.
Leak Checking
Block all road wheels, ensure air tanks are fully
charged and apply the parking brake. Apply a soap
solution to the valve housing and pipe joints and check
for leakage. No leakage is permitted from the valve
housing or joints.
SPECIAL TOOLS
There are no special tools required for procedures
outlined in this section. Refer to Section 300-0070,
SERVICE TOOLS, for part numbers of general service
tools required. These tools are available from your
dealer.
Courtesy of Machine.Market
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