Kohler Comand Pro CH1000, Service Manual

Page: 47 / 142

6.1
Section 6
Lubrication System
6
Section 6
Lubrication System
General
This engine uses a full pressure lubrication system.
This system delivers oil under pressure to the
cranksha
ft , camsha ft , and connecting rod bearing
surfaces. In addition to lubricating the bearing
surfaces, the lubrication system supplies oil to the
hydraulic valve li
ft ers.
A high-e ffi ciency gerotor pump is located in the
closure plate. The oil pump maintains high oil
fl ow and oil pressure, even at low speeds and high
operating temperatures. A pressure relief valve limits
the maximum pressure of the system.
Service
The closure plate must be removed to service the oil
pickup, the pressure relief valve, and the oil pump.
Refer to the appropriate procedures in Sections 8, 9,
and 10.
Oil Recommendations
Using the proper type and weight of oil in the
crankcase is extremely important. So is checking
oil daily and changing oil regularly. It is also
recommended that a consistent brand of oil be used.
Failure to use the correct oil, or using dirty oil, causes
premature engine wear and failure.
Oil Type
Use high-quality detergent oil of API (American
Petroleum Institute) service class SG, SH, SJ
or higher
. Select the viscosity based on the air
temperature at the time of operation as shown in the
following table.
5W-20, 5W-30
RECOMMENDED SAE VISCOSITY GRADES
10W-30
Kohler 10W-30
°F -20 0 20 32 40 60 80 100
°C -30 -20 -10 0 10 20 30 40
TEMPERATURE RANGE EXPECTED BEFORE NEXT OIL CHANGE
* Use of synthetic oil having 5W-20 or 5W-30 rating is acceptable,
up to 4°C (40°F)
** Synthetic oils will provide better starting in extreme cold below
23°C (-10°F)
**
*
NOTE: Using other than service class SG, SH, SJ or
higher oil, or extending oil change intervals
longer than recommended can cause engine
damage.
NOTE: Synthetic oils meeting the listed
classi fi cations may be used with oil changes
performed at the recommended intervals.
However, to allow piston rings to properly
seat, a new or rebuilt engine should be
operated for at least 50 hours using standard
petroleum based oil before switching to
synthetic oil.
A logo or symbol on oil containers identi fi es the API
service class and SAE viscosity grade. See Figure 6-1.
SAE
10W30
A
PI
SE
RVICE
S
J
Figure 6-1. Oil Container Logo.