a. Unscrew the bowl center post fitting at the bottom
of the bowl.
4-74. WATER SPRAY SYSTEM.
b. Remove and discard the element. Inspect filter
head o-ring and bowl gasket. Replace if necessary.
c. Wipe the bottom section of the filter head using a
4-76. The non-corrosive sump filter normally requires no
clean, lint-free cloth. Install a new o-ring in the filter
maintenance because of the self cleaning action of the
head if required. Use a light film of grease to hold the o-
water washing back and forth in the tank. If excessive
ring in place if necessary.
foreign material accumulates in the tank, the filter and
the tank will need cleaning. The filter can be inspected
CAUTION: Do not use lint-type cloth to clean hydraulic
by removing the tank access plate.
components. Lint deposits can affect the
operation of the system.
4-77. The tank inlet screen filter should be periodically
cleaned when the water does not readily pass through.
d. Install a new element in the filter bowl.
The screen lifts out of the tank freely after snap ring is
e. Screw the assembled filter bowl into the filter head.
When tightening the center post, hold the bowl from
turning because it may stretch the o-ring out of shape
and cause suction leakage. Tighten the center post to a
maximum of 20 ft.-lbs.(2.8 kg-m).
4-71. The throw-a-way return filter should be replaced at
1,000 hours of operation or every year, whichever
occurs first. Always change the return filter if the suction
filter is replaced.
a. Unscrew the filter from the filter head and discard
b. Wipe bottom of the filter using a clean, lint-free
CAUTION: Use only HYSTER-APPROVED filters.
c. Apply a film of oil or grease to the new filter gasket
(integral with filter).
FIGURE 4-23. WATER FILTER
d. Hand turn the filter into the filter head until the
gasket just makes contact. Then tighten one-quarter turn
4-78. MANIFOLD AND NOZZLES (see
4-79. The nozzles are mounted so they receive water
from the center of the manifold tube where corrosion
and sediment are minimized. This eliminates most of
the nozzle plugging problems. Periodically the end caps
on the water spray manifold should be removed and the
sediment blown from the manifold.
4-81. Drain the entire water spray system to