
Installation
NOTE: The accompanying chart lists different camshaft key
part numbers, the degree of offset, and the approximate
injector timing change from nominal.
Use a plastic mallet to install the camshaft gear key.
NOTE: If the same camshaft and gear are used again, use
the same part number key as the one that was removed.
Make sure the arrow on the key is pointing in the same
direction as when it was removed.
Refer to the engine dataplate and the Control Parts List
Manual, Bulletin No. 3379133, for the correct key part
number and key orientation.
Put the camshaft in a vertical position with the gear fit
area (nose) pointing up.
Apply LubriplateT 105 or its equivalent to the camshaft
gear fit area before installing the gear.
Camshaft Keys
3/4 Inch
Key
Part No.
Offset
mm [Inch]
Timing
Change
Change in
Push Rod
Travel At
19°BTDC
mm [Inch]
3021601 None None None
3021595 0.15 [0.0060] Retard 0.07 [0.0030]
3021593 0.19 [0.0075] Retard 0.09 [0.0037]
3021592 0.29 [0.0115] Retard 0.14 [0.0057]
3021594 0.47 [0.0185] Retard 0.23 [0.0092]
3021596 0.65 [0.0255] Retard 0.32 [0.0127]
3021598 0.79 [0.0310] Retard 0.39 [0.0155]
3021597 0.99 [0.0390] Retard 0.49 [0.0195]
3021600 1.30 [0.0510] Retard 0.65 [0.0255]
3021599 0.29 [0.0115] Advance 0.14 [0.0057]
3024697* 0.65 [0.0255] Advance 0.32 [0.0127]
* For CELECT™ Engines
Camshaft Gear - Replacement (01-18) Cylinder Block
N14Page 1-68
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