Schedule B Maintenance; Schedule B Maintenance Item Locations; Drain/Flush Coolant System - Generac Power Systems 22 kW Owner's Manual

5.8 — Schedule B Maintenance
NOTE: Perform Schedule B maintenance every two years or after 250 hours of service, whichever comes first.
Before proceeding below, first perform all tasks listed under Schedule A Maintenance.
NOTE: The 2.4L (32 kW) unit is depicted in the artwork used in this manual. For the general location of compo-
nents in all other models, see Subsection 5.8.1—Schedule B Maintenance Item Locations.
5.8.1— Schedule B Maintenance Item Locations
NOTE: The side of the enclosure with the viewing window is identified as the rear of the generator set. The
right and left sides are identified by standing at the rear and looking towards the front of the unit.
Model
Engine
Coolant Drain Hose
Radiator Fill Cap
Coolant Overflow Reservoir
Spark Plugs
R = Right Side L = Left Side
5.8.2— Drain/Flush Coolant System
Disconnect and empty coolant overflow reservoir.
1.
Install and connect coolant overflow reservoir.
2.
*
Verify that the engine is cool before removing the radiator cap. The cooling system is under pressure,
so steam and hot liquid can come out forcefully when the cap is loosened.
Rotate and remove plastic cover at top of enclosure.
3.
Slowly unscrew radiator cap.
4.
Locate drain cock at bottom left side of radiator.
5.
NOTE: If unit is not equipped with drain hose, install suitable length of rubber hose to drain cock.
Rotate hex fitting to open drain cock. See A of Figure 5-14
6.
Remove coolant drain hose from holding clamp.
7.
Use wrench to hold hex on hose fitting (to prevent rotation), and use second wrench to remove drain plug.
8.
Drain coolant into a suitable container.
9.
Install plug at end of drain hose.
10.
Install drain hose in holding clamp.
11.
Rotate hex fitting to close radiator drain cock.
12.
Obtain the recommended quantity and type of coolant. See Subsection 2.5 —Coolant Water Treatment.
13.
Model
Engine
2.0 gallons (7.6 liters)
2.5 gallons (9.5 liters)
3.0 gallons (11.4 liters)
Owner's Manual for Stationary Emergency Generators
22/27 kW 25/30 kW
2.4L 1.5L
L R
T T
L L
L R
B = Both Sides
System Coolant Capacity
22/27 kW 25/30 kW
2.4L 1.5L


32/38 kW 36/45 kW
2.4L 2.4L
L L
T T
L L
L L
T = Top
32/38 kW 36/45 kW
2.4L 2.4L
 
Maintenance
48 kW 60 kW
5.4L 2.4L
R L
T T
L L
B L
48 kW 60 kW
5.4L 2.4L


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