Snorkel AB85J, Repair Parts Manual

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Maintenance – 16
AB85J – 0421900
Engine
Engine – Item 9. Refer to the engine manufacturer’s
instruction manual or consult your local engine service
representative if engine adjustments or repairs are
needed. The engine must be operated in accordance
with manufacturer’s instructions and serviced at recom
-
mended intervals.
Hydraulic Oil Return Filter
Return filter – Item 10. Tthe hydraulic oil return filter is
mounted outside of the hydraulic oil reservoir.
The filter element is a throw-away type filter and
should be changed after the initial break-in period
(approximately 50 hours operation time).
The filter is equipped with a hydraulic pressure gauge
to indicate the filter element condition. A by-pass relief
within the filter base is provided and is set to by-pass at
25 psi. If pressure readings are above 25 psi, the filter
should be changed.
The filter condition should be checked at the 90 day or
150 hour Preventive Inspection Maintenance interval or
more frequently under extreme working conditions.
The filter condition indicator is accurate only when
the engine is running at maximum rpm and pump is
discharging maximum flow, which occurs only during
full speed driving. This requires that the indicator
be observed while the unit is in motion, booms fully
retracted and in stowed position, drive range switch
in “LO” position, and drive controller fully forward. Oil
temperature should be at least 90° F (32° C).
A
Warning
Use extreme caution while observing the condition
indicator because of the motion of the drive wheels.
The condition indicator is best observed from out-
side of the tract of the vehicle wheels to avoid pos-
sible personal injury or machine damage.
When changing the filter element, the oil inside of the
filter element, should be examined for deposits of metal
cuttings, which is present, could indicate excessive wear
in some of the system components.
Suction Strainer
Suction strainer – Item 11. A 100 mesh strainer is
located within the hydraulic oil reservoir and filters the
pump suction flow.
The strainer should be cleaned at the time interval shown
in the maintenance schedule chart, using Kerosene, fuel
oil or other solvent and a soft bristled brush.
Inspect the filter wire cloth for damage. Holes in the filter
cloth leak dirt into the pump and other vital hydraulic
components. If element is damaged, replace.
When the filter has been thoroughly cleaned, reinstall
in suction line and tighten securely.
Door Hinges and Latches
Door hinges and latches – Item 12. After lubricating,
remove any excess lubricant or over spray so it will not
collect dirt or debris.
Slide Pads
Slide pads – Item 13. Check slide pads for excessive
wear and replace as required. Slide pads do not require
lubrication.
Batteries
Batteries – Item 14. Batteries will have longer life if the
water level is maintained and they are kept charged.
The engine will have better starting characteristics with a
fully charged battery. In cold weather the battery should
be maintained at full charge to keep from freezing. An
extremely low or dead battery can freeze in cold weather.
Make sure connections are clean and tight.
Make sure charging equipment is operating properly.
A
Danger
Lead-acid batteries produce flammable and explo
-
sive gases. Never allow smoking, flames or sparks
around batteries. Lead-acid batteries contain sulfu-
ric acid which will damage eyes or skin on contact.
When working around batteries, always wear a face
shield to avoid acid in eyes.
If acid contacts eyes, flush immediately with clear water
and get medical attention. Wear rubber gloves and
protective clothing to keep acid off skin, if acid contacts
skin, wash off immediately with clear water.
Battery Care and Maintenance
The following information about battery care and main
-
tenance was supplied by Interstate Batteries and is
reprinted here with their permission.
1. New batteries need to be cycled several times before
reaching full capacity (20-50 cycles, depending on
type). Usage should be limited during this period.
2. Always recharge batteries fully, immediately after
use. Batteries perform best when they are fully
charged. More capacity and longer life will result
from this practice.
3. The deeper the discharge, the fewer number of
cycles a lead-acid battery will deliver. Deep dis
-
charges deteriorate the battery quicker than lighter
shallow cycles.
4. Battery cables should be intact and connectors kept
tight at all times. Systematic inspection is recom
-
mended.