If the parking brake does not engage fully, the rear (shoe type) brakes need to be adjusted or replaced.
if your van has rear drum brakes, adjust them up until there is a slight drag on the brakes. this usually does the trick to tighten up the parking brake.
The majority of time if you adjust the rear brakes it will adjust the park brake.
adjusting Isuzu rodeo brakes
i set the parking brake on my 2002 f-350 and it does not hold. I havent found where to adjust it on the truck. Can I adjust it or do I need to take it to a repair shop?
frist make syre your rear brakes are ajusted properly then try your parking brake
adjust the shoes
Release parking brake. Place transmission in Reverse. Apply brakes very firmly at about 5 mph. Repeat 10 times. That will automatically adjust the parking brake shoes.
Autozone.com has manual on their web page that explains the procedure.
They are self adjusting. Some sdjust when backing up and hitting the brakes and some by using the parking brake. You can also adjust them by removing the rear drums.
how do you adjust parking brake
its very easy , just one scroll behind the caliper you have to adjust , it takes 10 minutes