Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Component Inspection





Pulsers/Wheel Inspection
1. Check the pulser for chipped or damaged teeth.
(A front wheel sensor and pulser are shown; the rear wheel sensors and pulsers are similar.)

2. Measure the air gap between the wheel sensor and pulser all the way around while rotating the driveshaft by hand.

Standard: 0.4-1.0 mm (0.02-0.04 in)

NOTE: If the gap exceeds 1.0 mm (0.04 in), the probability is a distorted knuckle which should be replaced.