Braking System - Treadle Valve
Section 250-0070
SM 1939 4-00
4
MAINTENANCE
Numbers in parentheses refer to Fig. 1.
Every 250 hours
Lubricate treadle roller and pin (29) with engine oil as
specified in Section 300-0020, LUBRICATION
SYSTEM.
Lift boot (27) away from mounting plate (28) and
place a few drops of oil between mounting plate (28)
and plunger. Discard boot (27) and replace with a
new boot.
Coat valve body and exhaust port 'J' with soap suds
to check for leakage and make and hold a full
pressure brake application. Any leakage from the
exhaust port 'J' must not exceed a 25 mm (1 in)
diameter soap bubble in less than three seconds. If
excessive leakage is found, the treadle valve must
be repaired or replaced.
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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