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SECTION IV
MAINTENANCE
4-1 MAINTENANCE CHECK LIST
Perform scheduled maintenance as outlined below.
Lower machine to ground, turn off tractor, and set
parking brake before doing maintenance inspections
or work. All bolts should be torqued as recommend-
ed in torque chart unless otherwise indicated.
BEFORE EACH USE
1. Inspect hydraulic lines and fittings for wear or
leaks. Repair or replace if needed.
2. Inspect all pivot pins for wear. Make certain clevis
pins and cotter pins are installed to retain each pivot pin.
3. Check all bolts for tightness.
4. Perform BEFORE EACH USE lubrication per
paragraph 4-2.
5. During operation, listen for abnormal sounds
which might indicate loose parts or other damage.
AFTER EACH USE
1. Clean all debris from machine, especially cylinder
rods and affixed safety decals. Replace any miss-
ing or illegible decals.
2. Inspect loader for worn or damaged components.
Repair or replace before next use. Any replace-
ment components installed during repair shall
include the components current safety decals
specified by the manufacturer to be affixed to the
component.
3. Store loader in a dry place.
WARNING
THE LOADER CAN FALL FROM
HYDRAULIC SYSTEM FAILURE. TO
AVOID SERIOUS INJURY OR DEATH,
SECURELY SUPPORT LOADER
BEFORE WORKING UNDERNEATH.
4-2 LUBRICATION (Figure 4-1)
NOTE
The multi-purpose grease referenced in this section
is an NLGI grade 2 type grease.
BEFORE EACH USE
1. Boom Pivot Pins - Apply multi-purpose grease to
each fitting (1 fitting each side)
2. Boom Cylinders - Apply multi-purpose grease to
each fitting (2 fittings each cylinder)
3. Bucket Cylinders - Apply multi-purpose grease to
each fitting (2 fittings each cylinder)
4. Bucket Pivot Pin - Apply multi-purpose grease
to each fitting (1 fitting each side)
5. Hydraulic Oil - Cycle boom and bucket cylinders
2 or 3 times before each use, then check
hydraulic oil level in tractor reservoir.
CAUTION
USE A PIECE OF CARDBOARD OR
WOOD RATHER THAN HANDS AND
WEAR EYE PROTECTION WHEN
SEARCHING FOR HYDRAULIC LEAKS.
ESCAPING HYDRAULIC OIL UNDER
PRESSURE CAN PENETRATE SKIN. IF
OIL IS INJECTED INTO SKIN, IT MUST
BE SURGICALLY REMOVED WITHIN A
FEW HOURS BY A DOCTOR OR GAN-
GRENE MAY RESULT.
1
2
3
4
5
Figure 4-1 Lubrication Points
Check Tractor
Reservoir
19
4-3 HYDRAULIC SYSTEM PRESSURE
REQUIREMENTS
A tractor hydraulic system pressure setting of 2500
psi is recommended for maximum efficiency and
service. Do not exceed 3000 psi as this will dam-
age components possibly causing serious
injury. The Bush Hog control valve is pre-set at the
factory and should not be adjusted.