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SECTON 3
MAINTENANCE &
SUNDSTRAND PUMP START UP
PROCEDURE
1. With new pump installed and charge pump return
disconnected, pitch hose together to seal off
hose 1” behind swivel fitting. Note: Vice grips will
work to pinch hose, it must be sealed off
completely.
2. Remove reservoir overflow tube from plastic
overflow nipple.
3. The system is now ready to pressurize. Note:
This is done to purge air from the lines on the
inlet side of the pump and to assure the pump
has an immediate oil supply to the inlet side of
the pump. Maximum 5 lbs.
4. Using an air regulator, pressurize the system until
clear line is full of oil down to pump inlet 90º
fitting (Page 60, Fig.10) and oil comes out of
charge pump return 90º fitting. Note: maintain
pressure on the reservoir through step 5.
5. With handles in neutral position (Note: Brake
must be in off position) crank engine over and
observe oil in clear tube. The oil should be
traveling towards the pump and coming out of the
charge pump return 90º fitting. Do not start
engine unless you have determined you have oil
flowing to the pump while cranking engine with
the starter. Note: If this condition does not exist,
check for air leaks from 90º inlet fitting to
reservoir.
6. Remove pressure from reservoir and install
overflow tube back onto overflow nipple, and
remove vise grips from charge pump return line
and connect line back onto charge pump return
90º fitting. With throttle in idle position, and
handle in neutral, start engine, let idle for no less
than 60 seconds, then lightly stroke the levers.
After 2 minutes of lightly stroking the levers and
achieving steady movement of the wheel hub,
you may stroke the levers fully.
7. Reinstall rear wheel and lug nuts.
8. Check fluid level in hydraulic reservoir and fill if
necessary.
NOTES:
1. You must follow this procedure.
2. Failure to observe above procedure will destroy
this pump in 16 seconds or less.
3. Pump failure due to a dry start up is not a
warranty item.
4. You may profit from reading your instructions
twice.
ENGINE TO DECK BELT ADJUSTMENT
This belt only requires 40lbs. Of tension to achieve
satisfactory results. New machines equipped with the
30209-1 connecting arm may be adjusted using this
procedure: With en
ine off
en
a
e mower deck
SERVICE
(CONTINUED)
ighten bolt to compress spring. Proper tension has
been achieved when spring height reaches 2” in the
engaged position, which should allow ½” to ¾”
distance between the double jam nut and the
tensioner assembly. A visual check can be made by
simply engaging the mower deck. During this action
the last 1/4 turn should be spring compression.
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