Steam is recommended as the most effective method but
STEERING SYSTEM PRESSURE TESTING AND
if unavailable, use a spray of mineral spirits or similar
ADJUSTMENT should be made every 400 hours after
solvent which is non-harmful to hoses or exposed
machine operation with hydraulic oil at operating
temperature. Park machine on level ground, set parking
brake and lower blade. Remove top bulkhead cover and
INSPECT WIRING HARNESSES and connections for
rear floor plate. Install a 3000 psi pressure gauge in test
loose or damaged connections, chafed wire, etc.
port on bottom of steering relief valve. With engine RPM
at 2000, check steering relief pressure by turning machine
to a full lock (fully turned) position and taking gauge
DRAIN AND FLUSH RADIATOR every 800 hours or twice
yearly. Remove thermostat and reverse flush the system.
Refill to within 1/2 inch (1,5 cm) below bottom of fill-pipe
with required combination of anti-freeze (with rust
Steering System Pressure Test
inhibitor) and clean water.
Note: Do not use 'DOWTHERM 209'.
Caution: Do not hold for more than 30 seconds. If
pressure is more than 50 psi (345 kPa,3,5 kg/sq. cm)
above or below 2000 psi (13780 kPal140 kg/sq. cm), the
steering relief valve should be adjusted (refer to
for detailed instructions).
CHECK AND ADJUST ALL CONTROL LEVERS,
LINKAGES AND CABLES. Inspect and lubricate all
mechanical controls to make sure they are in good
STEAM CLEAN MACHINE every 400 hours or
periodically as required. Dirt accumulation may become
detrimental to machine operation. Protect alternator and
starter motor by covering them before steam cleaning.