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MQ-MIKASA MVH-304GHB PLATE COMPACTOR — PARTS & OPERATION MANUAL — REV. #0 (11/25/02) — PAGE 23
Figure 27 . Vibrator Oil Maintenance
MVH-304GHB—MAINTENANCE
Vibrator Oil Level Check
1. In every 100 hours of operation, with the machine positioned
horizontally, remove vibrator oil level check plug (Figure 27)
off vibrator (19 mm wrench) and see if oil is up to filler port.
Be sure to clean area around check hole to prevent dirt and
dust from entering.
2. In every 300 hours of operation, replace oil (capacity 1,500
cc). For draining oil through level check hole, have the
machine inclined with a sleeper or the like placed under the
compaction plate on opposite side.
* Use engine oil 10W-30 for this lubrication.
Hydraulic Oil
1. Check hydraulic oil in every 100 hours of operation. With
handle bar positioned vertically (storage position), remove
bleeder plug (Figure 28) off the top of hydraulic pump and
check for proper oil level.
2. Replace hydraulic oil after first 200 hours and in every 1,000
hours of operation.
CAUTION:
Always clean the area around the vibrator oil level
check hole before removing oil check plug. This
will prevent dirt and debris from entering the
system.
z
Reinstalling the V-belt
Engage V-belt to lower vibrator pulley and push the V-belt to left
side of upper clutch and, in the same manner as in removal,
rotate offset wrench clockwise so that the V-belt goes back on.
Checking and Replacing the V-Belt and Clutch
1. After 200 hours of operation, remove the belt cover to check
the V-belt tension (Figure 26). Tension is proper if the belt
bends about 10 mm when depressed strongly with finger
between shafts. Loose or worn V-belts reduces power
transmission efficiency, causing weak compaction and
reduces the life of the belt itself.
z
Replacing the V-belt
Remove the belt cover. Engage an offset wrench (19 mm) or the
like to vibrator pulley (lower) fastening bolt. Engage waste cloth
or the like at midway of V-belt on the left side and while pulling it
back strongly, rotate the offset wrench clockwise so that the V-
belt will come off.
z
Checking Clutch
Check the clutch simultaneously with V-belt checking. With belt
cover removed, check outer drum of the clutch for seizure and
"V" groove for wear or damage with your eyes. Clean the "V"
groove as necessary. Wear of lining or shoe should be checked
with running check. If the shoe is worn, power transmission
becomes deficient and slipping will result.
z
Replacing Clutch
Remove V-belt. Remove bolt at engine power output by giving a
shock to an engaged wrench (tapping with hammer or the like)
and rotating bolt counterclockwise. Remove clutch with a pulley
extractor. To reinstall, reverse the procedure.
CAUTION:
Whenever the compactor's vibration becomes
weak or lost during normal operation regardless
of operation hours, check the V-belt and clutch
immediately.
Figure 26. V-Belt Check
Figure 28. Bleeder Plug