Remove the drive coupling.
An accessory drive has been provided at the rear of the
engine to accommodate the gear driven hydraulic pump.
Place a clean, lintless cloth in the flywheel
The drive for the pump is made up of an accessory
housing opening, underneath the accessory drive plate,
drive plate and drive coupling. The accessory drive
to prevent bolts from accidentally falling into the gear
plate is bolted to the balance shaft gear. The hydraulic
Then remove the four bolts attaching the
pump is bolted to the flywheel housing and driven by the
accessory drive plate and remove the plate.
drive coupling which is splined to the accessory drive
Remove Accessory Drive
Clean the accessory drive parts with clean fuel oil and
dry them with compressed air. Examine the gear teeth
Remove the hydraulic pump accessory drive as follows:
of the drive shaft, drive coupling or drive plate for wear.
If worn excessively, replace with new parts.
Remove any external piping or connections to the
Install Accessory Drive
Remove the five bolts and lock washers attaching
the pump to the flywheel housing. Pull the pump
Remove the old gasket material from the flywheel
straight out from the flywheel housing.
housing. Use care so that no gasket material falls into
the gear train compartment.
Fig. 1. Typical Components of Accessory Drive For Direct-Driven Accessories