Generac Power Systems 941-2 Section VALVE TRAIN, Valve Train Components, Valve Components Removal

Section 2.2

VALVE TRAIN

VALVE TRAIN COMPONENTS

Valve train components are listed below and shown in Figure 1, below.

ITEM	QTY	DESCRIPTION
1	2	Tappet
2	2	Push Rod
3	2	Rocker Arm
4	2	Pivot Ball Stud
5	2	Rocker Arm Jam Nut
6	1	Push Rod Guide Plate
7	2	Valve Spring
8	2	Valve Spring Retainer
9	2	Valve Spring Washer
10	1	Exhaust Valve
11	1	Intake Valve

Figure 1. Valve Train Components

VALVE COMPONENTS REMOVAL

1.The ROCKER ARM COVER is retained by four M6-1.00 x 12mm screws and lockwashers. Remove the four screws and lockwashers, then remove the ROCKER ARM COVER and its gasket.

NOTE: Replace the ROCKER ARM COVER GAS- KET each time the COVER is removed, to ensure proper sealing.

Figure 2. Removal of Rocker Arm over

2.Loosen the rocker arm jam nuts on the pivot ball studs. Then, loosen the pivot ball studs. Remove the two pivot ball studs, the rocker arms and the jam nuts. Also remove the push rod guide plate.

NOTE: Keep the Intake valve and exhaust valve parts separated. Intake and exhaust parts are Identical. However, once a wear pattern has been established on these parts their fit will be different.

Figure 3. Rocker Arm, Push Rod & Guide Plate

3.Remove the push rods. 4. Remove the cylinder head bolts, then remove the cylinder head and head gasket.

NOTE: Replace the head gasket every time the head is removed. The new head gasket must be free of nicks and scratches as these could cause leakage.

Page 2.2-1