Textron 73-70920, Руководство владельца/оператора и иллюстрированный перечень запчастей

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7
TRENCHER
SERVICE
SERVICE SCHEDULE
Every 4 Hours:
• Grease the boom pivot tube.
Daily:
• Check for any signs of loose bolts and tighten
as needed.
• Check digging chain for missing or broken
cutters. Repair as needed. Check digging
chain tension.
• Wash boom, digging chain and auger at the
end of each workday.
25 hour:
• In addition to daily service, lubricate the roller
chain with chain lube or SAE 30 motor oil.
• Check gearbox oil level. Oil level is 4 inches
down from the top of filler tube. Use #90 gear
oil.
100 hour:
• Change gearbox oil at 100 hours or four
weeks initially, and every 2500 hours or six
months of operation thereafter. Use #90 gear
oil.
ADJUSTMENTS
Drive belt tension:
• See the power unit operators manual for
adjustment of drive belt tension.
Roller chain drive:
• Adjustment is by a spring loaded idler.
Digging chain tension:
• Adjust with large set screw in the center of
boom. Loosen jam nut and tighten set screw
until chain has 1/4 inch to 1/2 inch gap when
lifted from the boom at mid—point. Tighten
jam nut.
Crumber adjustment:
• The crumber should be close to, but not
touching, the digging chain at any time. The
unit may need to be moved out as the digging
chain stretches. Choose from three mounting
hole positions.
NOTE:
DO NOT OVERTIGHTEN CHAIN.
This will
cause undue wear on the boom
components.
Replacing digging chain:
1. Loosen four bolts through the boom.
2. Loosen jam nut on the set screw in the center of
the boom and back out the set screw to allow
the boom to retract.
3. Remove the old chain and replace with the new
chain.
4. Tignten the set screw until the chain is snug.
Tighten the jam nut. Tighten the bolts that were
loosened in Step 2.
5. Check new digging chain tension (as described
above) after it has run for 20 minutes, and every
hour of use for the next 4 hours.
NOTE: It is normal for a new chain to require
frequent tightening.