Sidekick JSS 4D Hard Top 2WD L4-1.8L (1997)
Camshaft: Testing and Inspection
INSPECTION
Cam Wear
-
Using a micrometer, measure cam height. If measured height is below its limit, replace camshaft.
Cam Height:
Intake Cam:
Standard: 40.428 - 40.588 mm (1.5917- 1.5980 inch)
Limit: 40.228 mm (1.5838 inch)
Exhaust Cam:
Standard: 39.922 - 40.082 mm (1.5717- 1.5780 inch)
Limit: 39.722 mm (1.5639 inch)
Camshaft Runout
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Set camshaft between two "V" blocks, and measure its runout by using a dial gauge. If measured runout exceed below specified limit, replace cam
shaft.
Runout Limit: 0.10 mm (0.0039 inch).
Camshaft Journal Wear
Check camshaft journals and camshaft housings for pitting, scratches, wear or damage. If any malcondition is found, replace camshaft or cylinder head
with housing. Never replace cylinder head without replacing housings. Check clearance by using gaging plastic. The procedure is as follows:
1. Clean housings and camshaft journals.
2. Make sure that all valve lash adjusters are removed and install camshaft to cylinder head.
3. Place a piece of gaging plastic the full width of journal of camshaft (parallel to camshaft).
4. Install camshaft housing.
