Johnston VM502, Руководство по обслуживанию

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V Range 502
l
652
l
802 Maintenance Manual
MA6:2
Chapter - Wearing Items
Fan Impeller
Inspection
Remove the plate
(A)
to allow access to the impeller for inspection. This should be inspected on a
regular basis as outlined in the routine maintenance. The impeller should be replaced as soon as the
blade thickness is less than 2 mm or the blades have visible signs of wear/damage.
Removal
Raise the body and ensure the body prop is engaged in the rack.
Remove the fancase cover
(B)
.
Before removing the fan impeller check for any lateral movement in a similar fashion to checking a
wheel bearing. An excess of 2 mm play would indicate wear in the gearbox bearing and would require
overhaul/replacement.
Remove the 3 bolts securing the centre of the fan on the VT, or one M12 setscrew/capscrew on the
VS. The fan should slide off the spline - a bearing puller can be used if required.
M02MA-019-2
= VT
= VS
B
A
D
C
WEARING PARTS - REPLACEMENT INSTRUCTIONS
WARNING:
Ensure the machine is standing on firm, level ground and there are no obstructions above or
to the rear before raising the body.
Ensure the safety prop is engaged at all times when working under the body.
Ensure operators are fully conversant with the controls and operation.
Isolate the air in the systems locker before working on any pneumatically operated or
controlled equipment.
Disconnect or isolate the vehicle battery when working on the electrical system.
Do not approach the fan inlet while the fan is running.
Do not grasp any part of the engine or exhaust system without first ascertaining whether it has
cooled sufficiently to avoid scalding.
Be aware of the safety instructions relative to the suction fan given in the equipment
maintenance notes.
Keep hands, loose clothing, hair etc. well clear of moving parts.
Do not climb on the engine walkways unnecessarily or approach the fan inlet whilst the engine
is running.
Do not use ill-fitting tools such as spanners that may slip and cause injury.
Always get a second person to check periodically that all is well when only one person is
working on the machine or inside the body .