Multiquip WM-120PM operation manual WM-120P/S Maintenance, Wheel Bearings

WHEEL BEARINGS

After every 3 months of operation, remove the hub dust cap and inspect the wheel bearings. Once a year, or when required, disassemble the wheel hubs remove the old grease and repack the bearings forcing grease between rollers, cone and cage with a good grade of high speed wheel bearing grease (never use grease heavier than 265 A.S.T.M. penetration (“No. 2.”) Fill the wheel hub with grease to the inside diameter of the outer races and also fill the hub grease cap.

Reassemble the hub and mount the wheel. Then tighten the adjusting nut, at the same time turn the wheel in both directions, until there is a slight bind to be sure all the bearing surfaces are in contact.

Then back-off the adjusting nut 1/6 to 1/4 turn or to the nearest locking hole or sufficiently to allow the wheel to rotate freely within limits of .001" to .010" end play.Lock the nut at this position. Install the cotter pin and dust cap, and tighten all hardware.

SHAFT SEALS

CAUTION:

IMPORTANT -DRUM HEAD SEAL CARE

Grease seals every 40 hours of operation using any grade #1 lithium base grease. Apply grease until visible inside of mixing tub (over grease). this will purge seal system of contamination.

CLUTCH REDUCTION ASSEMBLY LUBRICATION

The clutch reduction assembly has two separate compartments. Each of which must be filled with its proper lubricant and checked at regular intervals.

The clutch compartment should be filled with a good grade of number 30 SAE engine oil which can be poured through the filler hole located just above the clutch inspection door on the opposite side of the transmission. Fill the clutch compartment with 30 SAE engine oil until it overflows the oil level plug located on the shifter side of the clutch compartment . Check this oil level every two or three months and add oil as required. Drain and refill once a year.

The reduction gear, upper compartment should be filled with number 90 SAE oil, as used in automobile transmissions. The filler plug is at the top of the reduction gear case and the oil level plug is on the same side of the case as the clutch lever. Fill the reduction gear compartment with 90 SAE transmission oil until it overflows the oil level plug. Check this oil level every two or three months and add oil as required. Drain and refill once a year.

WM-120P/S — MAINTENANCE

PADDLE SHAFT BEARINGS

The paddle shafts in the Whiteman WM120P/S mixers rotate in sealed ball bearings, which require no additional lubrication as they are packed and sealed at the factory.

There is, on each end of the mixing drum, an zerk grease fitting. Oil these fittings two or three times each week as they lubricate the dumping mechanism of the mixing drum.

CAUTION:

■Failure to lubricate the zerk grease fittings two or three times a week will cause the dumping mechanism to stiffen, making the mixer hard to dump.

BOLT CONNECTOR

A 5/8 " x 4 1/4" bolt is used as a connector pin located between the reduction gear assembly and the paddle shaft. It is designed to protect the transmission in the event a rock or other object should get caught between the paddle blade and the drum, this pin may shear. It is recommended that an extra bolt be kept on hand so as to quickly make a replacement, if necessary.

NOTE

This connector pin bolt is special. When replacing this bolt consult the parts section of this manual for the correct part number.

BEARING BRACKET

Grease the bearing bracket every month.

CLEANING

Always disconnect the spark plug wire before cleaning the inside of the drum.

Never pour or spray water over the gasoline engine or electric motor.

For consistent performance, long life and high quality mixing, thoroughly clean the mixer inside and out at the end of each day’s operation.To prevent lumps of dried mortar from forming and contamination of future batches, do not allow a buildup of materials to form on the blades or anywhere inside the drum.

PAGE 18 —WHITEMANWM-120P/S— PARTS & OPERATION MANUAL — REV. #6 (07/20/05)