Chevrolet CHEVY VAN G10 SERIES Service Manual page 207

HOUSING
FILTER FAN
DRIVE HUB
D R IV E BELT
Inspection
• Inspect drive belt for w ear, cracks or deterioration and
replace if required.
• Inspect belt tension and adjust if below 50 lbs. using a
strand tension gauge.
VENT HOLE
(DO NO T OIL)
ROTOR SHAFT
OUTLETS'
INLET-
SIG N AL'
LINE
C O NN ECTIO N
Fig. 6 T -2 5 —Diverter Valve (Typical)
MAINTENANCE AND PROCEDURES
EMISSION CO N TR O L SYSTEM 6T-15
Fig. 6 T -2 4 —Schematic of A .I.R . System
PRESSURE
RELIEF
VALVE
DIVERTED AIR
OUTLET
D IA PH R A G M
ASSEMBLY
Adjustment
• Loosen p u m p m ounting b o lt and p u m p adjustm ent
b racket b o lt or D elcotron m ounting b o lt and adjustm ent
b racket as applicable.
Move p um p or D elcotron until b elt is properly tensioned
then tighten adjustm ent bracket b o lt an d m ounting bolt.
Use a strand tension gauge to check adjustm ent (Fig.
6T-26).
C H E V Y V A N S H O P M A N U A L