9
190-999 Rev G
Periodically
CAUTION: Do not turn the drive shaft while the oil reservoir
is empty.
CAUTION: Do not leave contaminated oil in the pump
housing or leave the housing empty. Remove contaminated
oil as soon as discovered and replace with clean oil.
1. Check inlet pressure periodically with gauge.
2. Change oil annually.
3. Change oil as follows:
a. Remove drain plug (60), and allow oil and contaminants to
drain completely. Catch oil and dispose of properly. Reinstall
drain plug.
b. Add suitable oil for the application and pump components.
c. Ensure oil level is 1 in. (25 mm) from the top crankcase.
4. Oil Capacity 1-3/4 US quarts (1.7 liters).
Change Oil Annually
Note: Minimum oil viscosity for proper hydraulic end
lubrication is 16-20 CST (80-100 SSU). MT Series
replacement parts kits (complete kits and diaphragm kits)
include suitable oil for each MT Series pump configuration.
CAUTION: If you are losing oil but don’t see any external
leakage, or if the oil becomes discolored and contaminated,
the diaphragm (18) may be damaged. Refer to the Fluid End
Service and Troubleshooting Sections. Do not operate the
pump with a damaged diaphragm.
MT8 Maintenance
