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PAGE 88 — C-30HD — PARTS & OPERATION MANUAL — REV. #4 (03/06/01)
Illustration represents the oil
pressurized system (oil pump)
C-30HD — SERVICE INFORMATION: CONCRETE PISTON HEAD LUBRICATION SYSTEM
The Mayco model C30-HD pump is the only pump available
utilizing a direct oil pressurized system (oil pump) and enclosed
lubrication box. This combination will prolong the piston cup
life and meet environmental standards.
1. Oil injection system — Check the reservoir every 8 hours.
Use a good grade of SAE 30 oil. *Note: Use SAE 10 wt. in cool
weather. When the piston cups are new, open the metering
valves to full open or approximately 15 drops of oil per minute
drip from the rear of each cylinder. (For the first 25 yards)
2. Lubrication box — We recommend utilizing soluble type oil
(water and oil mixture). The oil level should be periodically
checked and maintained at a height of 5 inches or one-half of
the cylinder height.
*Note: IMPORTANT! During freezing temperatures, completely
drain the water box and cover hopper.
As the piston cups naturally wear, fine cement particles will
accumulate in the box. Once the concrete paste reaches a
height of 3/4 inches from the bottom, the box should be drained
and cleaned, and the pump should be serviced.
*Note: If preferred, the oil pump may be disconnected. (Contact
Mayco Service Department)