Maintenance; Preventive Maintenance - Mi-T-M Corporation HG Série Mode D'emploi

PREVENTIVE MAINTENANCE:

LEAKS:
Promptly eliminate any leaks found in the pumping system by
removing suspect parts, applying thread sealant to the threads
and reinstalling.
NOTE: If using teflon tape, be certain no tape gets inside any plumbing to
prevent the possibility of a plugged spray nozzle.
QUICK COUPLERS:
There are o-ring seals inside the couplers which will deteriorate.
To replace, simply install a replacement o-ring to correct the leak.
(See illustration #16) (Additional o-rings can be purchased from
your dealer.)
NOZZLE:
Water flow through the spray nozzle will erode the orifice,
making it larger, resulting in a pressure loss. Nozzles should be
replaced whenever pressure is less than 85% of the maximum.
The frequency of replacement will depend upon such variables
as mineral content in the water and number of hours the nozzle
is used.
PUMP:
1. Change the pump oil after the first 50 hours of operation.
After initial change, every 3 months or 250 hour intervals are
recommended. If oil appears dirty or milky, changes may be
required in greater frequency.
2. Locate the pump oil drain hose.
3. Use an empty container to catch the oil and remove the plug
from the drain line. (See illustration #17)
4. Let all the oil drain from the pump and replace drain plug. Dispose
of used oil according to local, state and national regulations.
5. Fill the pump crankcase to the notch on the dipstick with pump
oil SAE20 or 30 non-detergent. Do not overfill.
BELT TENSION:
Ensure unit is off. Remove the side panel or lift lid to inspect the v-belt
for wear and tightness. If the v-belt needs to be replaced or tightened,
follow the procedures listed below and see illustration #18.
REPLACEMENT:
1. Loosen the four pump mounting bolts (A).
2. Loosen the two alignment nuts approximately one inch on the
alignment bolts (B1 & B2).
3. Slide the pump toward the motor to loosen belts.
4. Remove and replace belt.
TIGHTEN: (If v-belt was not replaced, you will need to loosen the
nuts on the alignment bolts B1 and B2 before proceeding.)
1. Tighten B2 alignment bolt. The pump will shift to the left until
there is tension on the belt. Then tighten B2 nut.
2. Tighten B1 alignment bolt, until sheaves are straight. (Use a
straightedge for alignment.)
3. Push on the v-belt to check belt deflection for tension. There
should be 1/4" to 1/2" deflection for correct tension.
4. If sheaves are straight and tension is correct, tighten B1 nut and
the four pump mounting bolts (A).
5. If tension is not correct, repeat steps 6 and 7 until correct
alignment and tension is achieved. Tighten the four mounting
bolts (A) when completed.
6. Loosen B2 nut, tighten B2 bolt, tighten B2 nut.
7. Loosen B1 nut, tighten B1 bolt, tighten B1 nut.
Operator's Manual

MAINTENANCE

ILLUSTRATION #16
QUICK COUPLERS
ILLUSTRATION #17
PUMP OIL DRAIN
ILLUSTRATION #18
BELT TENSION ADJUSTMENT
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