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MQD2H/3H DIAPHRAGM PUMPS — OPERATION AND PARTS MANUAL — REV. #6 (10/27/11) — PAGE 17
Gear Reduction Oil (Transmission)
1. Remove the transmission oil level plug (Figure 7). If oil
begins to seep out as the plug is being removed, then it
can be assumed that the transmission oil is at the proper
operating level.
2. If oil does not seep out as the oil level plug is being removed,
then remove the transmission oil fill plug and fill with SAE
80/90
EP (API GL-5) gear oil
to the proper operating level.
Transmission oil capacity is capacity is 22 ounces (651 ml).
Connecting Rod Bearing Lubrication
1. Grease connecting rod bearing thru the access
hole (Figure 8) every 25 hours of operation.
2. Use only
premium lithium based grease
, conforming to
NLG1 Grade #2 consistency.
Figure 7. Transmission Oil Level
Figure 8. Connecting Rod Bearing Lubrication
Helpful Hints
The capacity of this diaphragm pump will vary greatly depending on
the height of the suction lift and length of the discharge hose. A
discharge hose which is too small, long or high will cause the
following:
■
Excessive bulging of diaphragm on the down stroke.
■
Valves closing with a loud snap.
■
Rough operation.
■
Engine overloads and slow downs.
■
Reduced efficiency.
NOTE
Diaphragm pumps will handle fluids
containing considerable solids (see
Table 1 for maximum solids diameter),
however, if the mixture is too heavy to
be pumped, water must be added until
the mixture becomes sufficently fluid for
pumping.
This pump uses a water-cooled
mechanical
seal
to prevent water
from seeping into the engine. The
passage of water through the pump
casing lubricates the seal and
prevents it from overheating.
CAUTION - Strainer
The strainer should be positioned so it will remain completely
under water
. Running the pump with the strainer above
water for long periods can damage the pump.
DO NOT pump flammable fluids, corrosive chemicals or fluids
containing toxic substances. These fluids can create potentially
dangerous health and environmental hazards. Contact local
authorities for assistance.
CAUTION - Flammable Fluids
NOTE
SETUP