52 © Scania CV 2009
21. Every 2,400 hours
Checking and adjusting the unit
injector rocker arms
Note: Checking/adjusting the rocker arms for the PDE injectors
should also be done together with the valve clearance
check/adjustment after the first 400 hours of operation.
Important! The PDE 31 unit injector is adjusted using setting tool
99 414 or a digital sliding calliper.
The PDE32 unit injector is adjusted using setting tool
99 442 or a digital sliding calliper.
This adjustment is essential as a fault in the position of the
unit injector can result in poor performance and possible
breakdown.
Readings can be taken from the flywheel through covers in the flywheel
housing either from above or underneath depending on access when fitting.
Up or down is shown on the flywheel. Both openings are fitted with a
blanking piece on delivery; see illustration on page 46.
Measurement A=
PDE31: 66.9 ±0.1 mm
PDE32: 69.9 ±0.1 mm
Measurement B=
PDE31: 36.5 mm
PDE32: 38.8 mm
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