Product Manual A

Maintenance
31609 A MTP4000-6000DZV/DZD Operating Manual 51
* Change the engine oil and oil filter after the initial 50 hours of operation, then at the appropriate interval thereafter.
Refer to engine manual for engine oil recommendations.
** Add three to six pumps of grease at each grease zerk fitting with a hand grease gun. Refer to Figure 8 on page
14 and Figure 9 on page 15 for grease zerk locations.
Checking the Engine Oil
Low engine oil and overfilling lead to engine damage. The oil level may only be checked with the engine in a horizontal
position and switched off. If the engine is warm, switch off the engine and check the oil level after five minutes. If the
engine is cold, you can check it immediately.
WARNING
Be careful of hot lubricating oil. Scalding can occur. Do not pull out the dipstick while
the engine is running.
1. Pull out the dipstick and wipe off with a lint-free, clean cloth.
2. Insert the dipstick into the engine again as far as it will go.
3. Pull out the dipstick again and read the oil level. The oil level must always be between the MIN and MAX
marks. Top up to the MAX mark if necessary.
Checking the Oil Level Sight Gauge (Diaphragm Pump Only)
Check that oil is visible in the sight glass located on the side of the bearing housing of the diaphragm vacuum pump.
(It is recommended that the sight glass be checked daily.) If no oil is visible, oil will need to be added.
1. Shut down the unit.
2. Remove the pipe plug located at the top of the housing (refer to Figure 25 on page 64).
3. Add 10W-30 oil until the static oil level is below the center of the sight glass. DO NOT OVERFILL.
4. Reinstall the pipe plug.
Changing the Engine Oil
1. Warm up the engine (oil temperature greater than 176°F (80°C).
2. Ensure the engine is in a level position.
3. Turn the engine off.
4. Place a collecting receptacle underneath the lube oil drain screw.
5. Unscrew the lube oil drain screw and drain the oil into the receptacle.
6. After the oil has drained completely, fit the oil drain plug with a new sealing ring and reinstall the plug, tight-
ening to 41 ft-lbs (55 Nm).
7. Remove the engine oil fill cap and add the recommended amount and type of oil. Refer to the engine man-
ual for specifications.
8. Warm up the engine (oil temperature greater than 176°F (80°C).
9. Ensure the engine is level and check the oil level. Refer to “Checking the Engine Oil” on page 51.