HARDI-EVRARD ALPHA PLUS 3500, Operating And Maintenance Manual

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ALPHA PLUS HARDI NOVA
M M A A II N N T T E E N N A A N N C C E E
CHAPTER
5 5- 21
The transmission feed and working pressure are checked as follows :
- Connect a 40 bar (580 p.s.i.) pressure gauge to the feed pressure connector (P2), and a 400 bar (5800 p.s.i.)
pressure gauge at the working pressure connector (P1).
- Set the engine at 2000 r.p.m. check with a tachometer
- Set the blower at max. speed
- Check the feed and working pressure :
Feed pressure, P
P2 2
15-20 bar (218-290 p.s.i.)
Working pressure, P P1 1, approx.
18 m 180 bar (2610 p.s.i.)
20 m 190 bar (2755 p.s.i.)
21 m 200 bar (2900 p.s.i.)
24 m 210 bar (2610 p.s.i.)
27 m 240 bar (3721 p.s.i.)
28 m 240 bar (3721 p.s.i.)
- Adjust feed pressure if necessary.
Failure to reach feed and working pressure indicates that the transmission needs overhauling.
F Faan n ttrraan nssm miissssiio on n p prre essssu urre e aad djju ussttm me en ntt
D D
B B
P P2 2
D D
S S
A A Pressure port
B B Return port
D D Drain port
P P1 1 Connector for working pressure measurement
P P2 2 Connector for feed pressure
R R Adjustment screw for feed pressure
S S Suction port
A A
R R
P P2 2
A A
B B
- Fill the oil reservoir with fresh, clean oil to the top of sight glass.
- Fill the pump housing with oil through the drain pipe (D) which is dismantled at the
tank connection. Reconnect and tighten.
- Check the oil level in the gear box
- Remove the drain hose (D) from the motor outside the blower housing.
- Set the fan r.p.m. at 0
- Engage the tractor P.T.O. with the engine running at idle
- Wait a few minutes
- Set the fan speed at 200 r.p.m.
D D
- After a while the oil will start dripping constantly. Refit the drain hose and tighten.
- Set engine speed at 2000 r.p.m. , the fan should rotate at max. revolutions/mn.
- Recheck oil level at tank sight glass
- Retighten hose connections and check for leaks.
- Check fan speed pressure adjustments - see section on ‘’Fan speed adjustments’’ and ‘’Fan transmission
pressure adjustment’’
F Faan n ttrraan nssm miissssiio on n p prriim miin ng g
If the hydraulic pump fan has been dismantled, or pump or motor has been changed, the following priming
procedure must be carried out before starting up the transmission.