c. Change the oil and oil filter element after
t h e first 20 operating h o u r s and every 500
hours thereafter. The oil in the system must be
changed whenever it shows traces of dirt or the
effects of high operating temperature, evidenced
by discoloration or strong odor.
d. If the oil in the system has become
contaminated with metal particles, all the
components of the system (oil tubes, oil
pump, o i l f i l t e r , c o n t r o l valve, converter
clutches, heat exchanger and sump) must be
t h o r o u g h l y cleaned. The presence of metal
particles in the oil is evidence of the failure of
some part of the system.
e. Drain dirty oil while it is still warm,
r e v e r s e and the 3-speed transmission have
FIGURE 4-6. STEERING HYDRAULIC OIL.
separate drain plugs. Clean the magnetic drain
plugs before replacing them.
from entering the system.
f. Always use clean oil and clean containers.
b. Remove the stud from the bottom of the
g. Fill oil to the FULL mark on the dipstick.
Do not overfill.
h . Keep all shifting joints on the shifting
4-57. TRANSMISSION OIL FILTER.
4-58. The full-flow oil filter which serves the
transmission is bolted to a mounting bracket
on top and back of the engine. It is to the right
side of the steering hydraulic filter. Both filters
4-59. STEERING SYSTEM.
4-60. STEERING HYDRAULIC OIL (see figure
4-61. Check the hydraulic oil level at the sight
gauge. This check should be made with cold
o i l . Add hydraulic oil when oil is no longer
visible in the sight gauge. When adding
FIGURE 4-7. CHANGING STEERING HYDRAULIC
hydraulic oil, use extreme care not to introduce
foreign particles into the system.
c. Inspect the filter element. If metal
4-62. STEERING HYDRAULIC FILTER.
particles are found, make a thorough inspection
of the entire system.
4-63. The steering hydraulic filter is located on
top and to the rear of the engine. The filter is
d. Discard the used filter according to the
located to the left of the transmission filter.
The filter has a disposable element and should
be replaced at recommended service intervals.
e . Remove the relief valve assembly (see
a. Clean the shell and the top to keep dirt