Wheel Bearing Maintenance; Hydraulic Maintenance - Landoll 6230 Series Operator's Manual

4-19 WHEEL BEARING MAINTENANCE

Wheel bearing maintenance should be per-
formed at the beginning of every season of use.
Check the wheel bearings periodically for exces-
sive end play. If needed, adjust or replace them
using the following procedure:
4-19.1 Place the frame on blocks or stands
sufficient to lift the tire clear of the ground.
4-19.2 Remove the tire.
4-19.3 Remove the hub cap, cotter pin, slotted
nut and washer.
4-19.4 Remove the hub. Clean and inspect the
bearings and hub cavity. Replace any worn
or defective parts.
4-19.5 Repack the bearings using a high-
quality wheel bearing grease.
4-19.6 Slide the triple-lip seal onto the spindle.
Do not install the seal into the hub.

4-20 HYDRAULIC MAINTENANCE

4-20.1 Check the tractor hydraulic fluid level
per tractor owners manual and after any
leakage. Check fluid level with the cylinders
in the retracted position.
4-20.2 If a cylinder or valve leaks, disassemble
the parts to determine the cause of the leak.
Any time a cylinder is opened up, or when-
ever any seal replacement is necessary, it is
advisable to clean all parts and replace all
seals. Seal kits are available from your Lan-
doll dealer.
4-20.3 Check all hydraulic hoses weekly. Look
for binding or cracking. Replace all worn or
defective parts immediately.
4-19.7 Slide the inner bearing cone and hub
onto the spindle.
4-19.8 Install the outer bearing cone, washer
and slotted nut.
4-19.9 Tighten the slotted nut while rotating the
hub until there is a slight resistance to wheel
rotation. Then, back the slotted nut off one
notch, until the wheel rotates freely without
end play.
4-19.10 Slide the triple-lip seal to the hub and
install the seal in the hub.
Note: The triple-lip seals should point away
from the hub to keep contaminants out and
allow grease to pass.
4-19.11 Install a new cotter pin and replace the
hub cap.
IMPORTANT
UNFOLD, LOWER
GROUND, AND RELIEVE HYDRAULIC PRES-
SURE BEFORE ATTEMPTING TO SERVICE
ANY HYDRAULIC COMPONENT.
4-20.4 Transport locks are provided to hold the
implement in a raised position. Do not at-
tempt to perform any service work under the
implement without first installing the transport
locks. Before servicing any hydraulic compo-
nent, lower the implement to the ground and
relieve all system pressure. If a hydraulic
component is disconnected, repaired, or re-
placed, it will be necessary to purge the sys-
tem of air before operation. See Sections
4-4 and 4-5 on how to purge the hydraulic
systems.
THE UNIT TO THE
4-19