ISC, ISCe, QSC8.3, ISL, ISLe3, ISLe4 and QSL9 Engines – 001-013   Camshaft Gear (Camshaft Removed)

Preparatory Steps

TOC

SMALL | MEDIUM | LARGE

Remove

TOC

Remove the gear by using a press.

Remove the thrust plate.

SMALL | MEDIUM | LARGE
   


Remove the camshaft key.

SMALL | MEDIUM | LARGE
   

Clean and Inspect for Reuse

TOC

Inspect the camshaft gear for cracked, chipped, or broken teeth.

Inspect the camshaft bore for fretting or burrs.

NOTE: If the fretting, burrs, or raised material can not be removed with abrasive pad, Part Number 3823258, or equivalent, replace the camshaft gear.

SMALL | MEDIUM | LARGE
   


Inspect the camshaft gear keyway for burrs.

Remove burrs with abrasive pad, Part Number 3823258, or equivalent.

NOTE: If the keyway is damaged or the burrs can not be removed, the camshaft gear must be replaced.

SMALL | MEDIUM | LARGE
   


Inspection steps for engines with bolt on speed sensor targets:

Inspect the cam gear and timing plate for damage.

Inspect the flathead capscrews to make sure they are tight.

If more than one capscrew is loose, replace cam gear.

If only one capscrew is loose, tighten all capscrews.

Torque Value:  7  n.m  [62 in-lb]

SMALL | MEDIUM | LARGE
   


Inspection steps for engines with machined speed sensor targets:

Inspect the camshaft gear and speed sensor targets.

Replace the camshfat gear if any damage is found.

SMALL | MEDIUM | LARGE
   


Inspect the camshaft nose for fretting or burrs.

NOTE: If fretting or burrs can not be removed with abrasive pad, Part Number 3823258 or equivalent, replace the camshaft.

SMALL | MEDIUM | LARGE
   

Install

TOC

Lubricate the camshaft surface with assembly lubricant, Part Number 3163087, or equivalent.

SMALL | MEDIUM | LARGE
   


Install the key.

Install the thrust plate.

NOTE: Because the thrust plate extends more than 180 degrees around the camshaft, the thrust plate must be installed before installing the cam gear on the camshaft.

SMALL | MEDIUM | LARGE
   


 CAUTION 

The camshaft gear will be permanently distorted if overheated. The oven temperature should never exceed 204°C [400°F].

Heat the camshaft gear for 45 minutes.

Measurements
  celsius fahrenheit
Oven Temperature 204 400
 
SMALL | MEDIUM | LARGE
   


 WARNING 

Wear protective gloves to reduce the possibility of personal injury when handling parts that have been heated.

NOTE: When clamping the camshaft to install the gear, do not place clamps directly on the camshaft lobes or journals, which could damage the surfaces. Clamp only the cast surfaces between the lobes, or place padding between the clamps and the camshaft surfaces.

Install the camshaft gear with the timing marks away from the camshaft.

SMALL | MEDIUM | LARGE
   


NOTE: Be sure the gear is seated against camshaft shoulder.

Use a 0.02 mm [0.001 in] feeler gauge, to see if the feeler gauge can be inserted between the camshaft gear and the shoulder on the camshaft. If the feeler gauge can be inserted, the camshaft gear is not properly seated.

SMALL | MEDIUM | LARGE
   

Finishing Steps

TOC

  • Operate the engine and check for leaks.

SMALL | MEDIUM | LARGE
Last Modified:  08-Apr-2010