AUXILIARY EQUIPMENT 24A
Compressor drive for Wabco
compressors
To remove and to fit24A-02
To remove
1 Remove the compressor and the drive housing
assembly from the engine, operation 24A-01.
2 Release the setscrews and separate carefully the
drive housing from the compressor (A).
To fit
1 Check the drive gears, and the bearing for wear
or for damage. Renew components if necessary.
2 Check the bush (A2), which is fitted in the
compressor casing, for wear. If necessary, renew
the bush. Ensure that the dowels (A1) are fitted
correctly and that the joint faces are clean.
3 Lubricate lightly, with clean engine lubricating oil,
the bush in the compressor casing. Put a new joint
in position, fit the drive housing to the compressor
and tighten the setscrews.
4 Fit the compressor and drive assembly to the
engine, operation 24A-01.
To dismantle and to assemble24A-03
Consumable products:
POWERPART retainer (oil tolerant)
POWERPART Nutlock
The gears, the drive shaft, the nuts of the drive
shaft and the housing of the drive assembly have
been changed.
The number of teeth on the gears have been
changed to enable the compressor timing to be
matched to the engine. The front idler gear has 26
teeth, the rear idler gear has 39 teeth and the
compressor drive gear has 42 teeth. The drive
housing has been changed to increase the
interference between the housing and the bearing.
The tab washers have been removed. The spacer
between the rear idler gear and the bearing (only
used in the drive assembly for the Wabco 159
compressor) has also been removed. There is now
a boss on the rear idler gear instead of the spacer.
The new and the old components are not
interchangeable.
The components of the new drive assembly will
now be the same when used with either the Wabco
159 or 229 compressor.
a
a
1
2
PA284
There have also been changes to the Wabco 159
and 229 compressors. The thread on the front of
the compressor crankshaft has been changed from
3/4 UNF to M20 x 1,5 mm. A label which has timing
marks has been fastened with adhesive to the rear
face of the compressor.
Perkins Phaser/1000 Series, April 1995 24A.07
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