SECTION 5: MAINTENANCE
Always disconnect power to the machine before performing maintenance. Failure to do this may result in serious person- al injury.
Lubrication
Remove the gear cover/guard. Lubricate the driv- ing gear with a
Figure 15. Driving gear.
Before every use, and while the mixing drum and blades are clean and dry, wipe down the inside of the mixing drum and blades with a light coat of motor, hydraulic, or vegetable oil. This will prevent most cement from sticking to these surfaces and will make cleaning very easy.
An alternative to coating the drum interior with oil is to spray the oil. Since most oils are too thick to spray, use a mixture of half oil and half diesel fuel. This is a common spray mixture used in commer- cial concrete construction to prevent sticking.
H8172 Cement Mixer
Cleaning
•Always unplug the cement mixer before cleaning.
•Avoid getting water on the motor or switch while cleaning. If you do, allow the compo- nents to thoroughly dry before plugging in the motor.
•The easiest way to clean the drum is by hosing it out with water. (Cleaning is made much easier if you follow the Lubrication procedures in this section before using your cement mixer.)
•Always clean the mixing drum immediately after using it. As a general rule, the sooner you clean, the easier it will be.
•For tough to remove buildup, use a stiff bristle brush or a rag to make cleaning easier.
•Small, hardened cement splatters usually can be removed by rubbing with a dry rag.
•Hardened cement can be scraped, chiseled or pounded off with a hammer; however, these actions WILL damage the surface area of the drum, making it harder to clean in the future.
Drive Belt
Avoid getting grease or oil on the drive belt or pulleys. Check the drive belt, as part of a monthly inspection for proper tension and belt condition. Cracking and glazing could result in belt failure. Replace the belt if such conditions appear.