Smithco 20-700-A, Parts & Service

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Ser
vice
MAINTENANCE
ENGINE OIL
With strict emission control regulations now in effect, the
CF-4 and CG-4 engine oils have been developed for use
with low sulfur fuels, for On-Highway vehicle engines. When
Non-Road engines run on high sulfur fuel, it is advisable to
use a "CF or better" classification engine oil with Total Base
Number (a minimum TBN of 10 is recommended).
Check the engine oil before starting or more than 5 minutes
after stopping the engine. If oil level is low, remove oil filler
plug and add new oil to the prescribed level. Do not overfill.
Engine oil should be MIL-L2104C or have properties of API Classifications CD grades or higher. Change the
type of Engine oil according to the ambient temperature.
Starting Temperature Range Anticipated Before Next Oil Change
HYDRAULIC OIL
1. Use SAE 10W-40 API Service SJ or higher motor oil.
2. For proper warranty, change oil the first 50 hours and then every 500 hours or annually, which ever is
first.
3. Oil level should be 2-2½" (5-6.4cm) from top of the tank when fluid is cold. Do not overfill.
4. After changing oil, run the machine for a few minutes. Check oil level and for leaks.
5.
Always use extreme caution when filling hydraulic oil tank or checking level to keep system free of con -
taminants. Check and service more frequently when operating in extremely cold, hot or dusty conditions.
6. If the natural color of the fluid has become black or smells burnt, it is possible that an overheating prob -
lem exists.
7. If fluid becomes milky, water contamination may be a problem.
8. If either of the above conditions happen, change oil immediately after fluid is cool and find the cause.
Take fluid level readings when the system is cold.
9. In extreme temperatures you can use straight weight oil. We recommend SAE 30W API Service SG
when hot (above 90°F (33°C)) and SAE 10W API Service SJ or higher when cold (below 32°F (0°C)
ambient temperature. Use either motor oil or hydraulic oil, but do not mix.
10. Oil being added to the system must be the same as what is already in the tank. Mark the tank fill area
as to which type you put in.