Johnston VM502, Руководство по обслуживанию

Страница: 175 / 220

MA7:5
V Range 502
l
652
l
802 Maintenance Manual
Johnston Sweepers Limited
Chapter - Remove and Refit Procedures
Individual pumps may be removed in situ if required.
On the rear of the transmission pump is a single gear pump to power the sweeping equipment. This is
replaced by a tandem pump when optional equipment such as Supawash is fitted.
The fan drive pump is mounted on the opposite side of the gearbox to the transmission pump (i.e. front
to rear).
The transmission drive motor is always mounted on the opposite side of the gearbox to the transmission
pump.
If the removal of any pump is required, it is first necessary to minimise oil loss by loosening the cap on
the hydraulic return filter.
All hoses should be plugged after the removal of any pump to prevent dirt ingress and oil loss from the
hoses.
1 Hydrodrive gearbox
The Hydrodrive gearbox assembly can be removed as a complete unit by using a lifting jig, Part No
93828-1.
Removal
1. Remove fan case cover and impeller as described earlier.
2. Loosen cap on hydraulic return filter.
3. Disconnect hydraulic hoses from ports (A) , (B) , (C) and (D) .
4. Remove 4 setscrews (E) holding motor on to the mount.
5. Withdraw motor.
Refitting
6. Refitting is the reverse procedure to removal. Lubricate motor
drive shaft with Kluber paste 46MR401 before refitting.
7. Motor securing capscrew should be tightened to torque of
101 Nm.
8. Retighten cap on hydraulic return filter.
M02MA-038a
D
E
C
A
B
2 Fan Drive Motor
VS - Single Engine
Hydrostatic Gearbox and Pumps
WARNING:
If the gearbox is to be removed, the truck will be immobile. The ignition keys should
be removed to prevent inadvertent starting and consequential damage to the drive
line and components.
Care should be taken before loosening the cap of the return filter, as the oil may be
under pressure if the vehicle has just stopped, loosen the cap slowly.