3116 and 3126 Truck Engine Camshaft Diagram

(1) Gear. Heat to install (do not use torch). Do not heat above … 316°C (600°F)

(2) Distance between shoulder of camshaft and gear for thrust washer (new) … 4.83 ± 0.05 mm (0.190 ± 0.002 in)

Thickness of thrust washer (new) … 4.70 ± 0.03 mm (0.185 ± 0.0012 in)End play of camshaft (new) … 0.13 ± 0.08 mm (0.005 ± 0.0032 in)Maximum permissible end play (worn) … 0.46 mm (0.018 in)
(3) Diameter of camshaft journals (new) … 65.126 ± 0.013 mm (2.5640 ± 0.0005 in)

(4) Intake lobe

(5) Exhaust lobe

 

(6) Height of camshaft lobes.

To find lobe height, use the procedure that follows:

A. Measure camshaft lobe height (7).

B. Measure base circle (8).

C. Subtract base circle (Step B) from lobe height (Step A). The difference is actual lobe lift.

D. Specified camshaft lobe lift (6) is:

Exhaust lobe … 7.497 mm (0.2952 in)Intake lobe … 9.299 mm (0.3661 in)

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