MAINTENANCE (MIXER)
DRUM HEAD SEALS
There is 1 set of drum head seals (Figure 35) that will require lubrication. Lubricate the grease fitting for each drum seal after each use using any grade lithium base grease. Apply grease until visible inside of mixing drum (over grease). This will purge seal system of contamination.
GREASE FITTING | DRUM HEAD | GREASE FITTING | |||||||||||
AND CAP | SEALS |
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BALL SOCKET AND CLAMP FACE MAINTENANCE
1.If the towing vechicle is equipped with a ball socket, smear socket periodically with
2.Periodically oil pivot points and clamp face surfaces of coupler with SAE 30 WT. motor oil.
3.When parking or storing your mixer. Keep the coupler off the ground so dirt will not build up in the ball socket.
HYDRAULIC OIL FILTER
Replace hydraulic oil filter (Figure 37) every 500 hours. Hydraulic tank capacity is 12 gallons (45 liters). Refill with any of the following hydraulic oil types. Shell Tellius 68, Mobil DFE26 or Texaco Rand HDC.
Figure 35. Grease Fittings (Drum Head Seals)
DRUM BEARING BRACKET LUBRICATION
There is 1 set of drum bearing brackets (Figure 36) that will require lubrication. These brackets are intended to make the drum rotate freely. Lubricate the grease fitting for each drum bearing bracket every month or when the drum becomes difficult to position using
GREASE FITTING
AND CAP
GREASE FITTING
AND CAP
DRUM BEARING
BRACKET
Figure 37. Hydraulic Oil Filter
WHEEL BEARINGS
1.After every 3 months of operation, remove the hub dust cap and inspect the wheel bearings (Figure 38). 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.”)
Figure 36. Grease Fittings (Dumping Mechanism)
CAUTION — Lubricate Grease Fittings
Failure to lubricate the drum bearing grease fittings eriodically will cause the dumping mechanism to stiffen, making the mixing drum hard to dump.
Figure 38. Wheel Hub and Bearings
PAGE 30 — WM120PH/SH HYDRAULIC MIXER • OPERATION AND PARTS MANUAL — REV. #7 (09/15/11)
