ALPHA PLUS HARDI NOVA
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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.
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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’’
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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.
Содержание ALPHA PLUS 3500
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