Chevrolet 10 Series 1970 Service Manual page 589

EXHAUST-
VALVES
CLOSED
INTAKE
VALVE
CLOSED
EXHAUST'
VALVES
OPEN
F ig . 2 9 —Cross S e ctio n o f W in d s h ie ld W asher Pump V a lv e
N T A K E
PISTON
DIRECTION OF TRAVEL
E X H A U S T
ELECTRICAL—BODY AND CHASSIS 12-27
DIRECTION OF TRAVEL
V / / /
X
'ACTUATOR PLATE
S T R O K E
3 C
/ / // X .
ACTUATOR PLATE
S T R O K E
CHEVROLET TRUCK SERVICE MANUAL