A L P H A 2 5 0 0
M A I N T E N A N C E
CHAPTER
5- 13
677824
09/01
The carbon cab filters are located on either side of the cab close to the windscreen . Act as follows :
- Unscrew the fixing screw (1)
- Pull out the carbon filter cover (2) to extracting the carbon filter (3)
- Replace the new carbon cab filters (reference : 278238) and refit the assembly
Ets EVRARD
HELIFLU 16 EL
N
°
K 0.0
RIGHT
WRONG
2
1
3
!
Héliflux flowmeter
250
I t i s e s s e n t i a l t o r e p l a c e t h e t wo c a r b o n c a b f i l t e r s s i m u l t a n e o u s l y
Pentalets
Piston
- Check the diaphragms (1)
- Check the ‘Pentalet’, if necessary lubricate very lightly the
piston with a special grease for synthetic (plastic/plastic)
and long lige grease (pneumatic anti-drip version)
- Remove the flow meter by unscrewing the two nuts (1).
- Pull out the bearing with the rotor (2).
- Check the condition of the bearing bushes (3). Never lubricate the internal parts of the flowme-
ter
- If necessary, replace the bearing bushes For this purpose :
-
Remove the bushes from the bearing
-
Carefully clean the bearings with compressed air if necessary
-
Fit the new bearing bushes by pushing them with your thumb.
- Re-fit the rotor on the first bearing and then on the second bearing.
N.B. : Opening the valves too quickly can damage the flow meter. Make sure that the flow in the
piping increases gradually
250
Mecanical anti-drip version
Pneumatic anti-drip version
1
1
