Accessory Installation Instructions; Start-Up Of Auxiliaries (Brakes - Clutches- Etc.); Negative Multi-Disc Brake; Disk Brake - brevini ED2090MR20FL350B3 Manual De Instalación Y Mantenimiento

solenoid valve, disconnect the hand-operated hydraulic pump
and refit the 1/4 Gas plug.

5.7 Accessory installation instructions

Motor Assembly:
While assembling the gear unit on the motor, the coupling
must be lubricated with a thin layer of grease or with a no-grip
lubricant.
Carefully insert the motor shaft in to the coupling and make sure
that the motor spigot perfectly matches the gear unit spigot.
After checking that the motor is properly centered, tighten all
the attachment bolts applyng the torque indicated in the table
"torque setting" paragraph 8.1.
Accessory Assembly:
To mount pinions, pulleys or couplings, use suitable equipment
avoid seizing. As an alternative, heat the piece to 80°-100° C.
Lubricate the grooves with a thin layer of grease or a no-grip
lubricant and tighten attachment bolts applyng the torque
indicated in the table "torque setting " paragraph 8.1.

6. START-UP OF AUXILIARIES (BRAKES - CLUTCHES- ETC.):

6.1 Negative multi-disk brake
NOTE: The negative multi-disk brake is used only as a parking
brake, or in special situation as an emergency brake.
- Connect the fittings of the system hydraulic cirsuit to the brake
control hole (see paragraph 2.2 "configuration") of all the gear
units with these features installed in the system.
- Pressurize the hydraulic circuit and then bleed all brakes.
Slightly unscrew the brake control fitting, and maintain pressure
until only oil is expeloled without any air. Then re-tghten the
fitting.

6.2 Disk brake

- Connect the fittings of the system brake circuit to the brake
control hole "A" (see fig. No. 2) of the brake clamp located on
the gear unit for all the gear units with these features installed in
the system.
Bleed The brakes after injecting oil into the circuit (remove the air
from the brake circuit).
- At least two persons are needed to carry aout this operation.
NOTE: For the bleeding operation it is recommended, after
having removed the rubber guard of the bleder valve "B", to
attach a piece of rubber hose with a
lenght of about 20 cm to collect any
oil into a can (wich should not be
doumped in the environment since
such oil is a major polluttant).
- Slightly unscrew (1 turn) the bleeder
valve "B" and keep activating the
brake control until only oil without
any oir is expelled from the vlave.
Immediatelly close the valve and
release the brake control.
NOTE: if oil not expelled the first
time the brake control is actived
close the bleeder valve and release
the brake control. Then open the
valve again and activate the brake
control and continue in this manner until only oil is expelled.
- Repeat this operation for all gear units with these features
installed in the system, then top-up the oil in the brake circuit.
6.3 Gear unit-coupler assembly with active clutch safety
system
- the hydraulic pump used by the power pack is reversible, thus
guaranteeing the same constant pressure at all times, regardless
of the direction of rotation
ATTENTION: the pressure relief valve on the power pack has
been pre-set to the right pressure (25.5 ± 2 bar). It is absolutely
forbidden to alter this valve setting.
- power up the solenoid valve with direct current (12 Volt) via
the socket on the power pack (see chapter 2.2.1 for location of
symbol)
- to prime the hydraulic pump (after filling the assembly with
lubricating oil), simply start the coupler PTO rotating, as the
pump is self-priming.

7. LUBRICATION:

7.1 Gear unit lubrication

The Brevini gear units are supplied without oil, therefore the
user must the lubricant according to what is indicated in the
table shown in paragraph 7.4.
Basic oil specifications
The basic parameters of the selected oil are:
- viscosity at nominal operating conditions

- additives

The oil must lubricate the bearings and the gears and all these
components work inside the same box, in different operating
conditions. We will look at these parameters one by one.

7.1.1 Viscosity

Nominal viscosity is referred to a temperature of 40 °C, but
rapidly decreases with an increase in the temperature of the
gear unit.
If the operating temperature is between 50 °C and 70 °C, a
nominal viscosity can be chosen according to the following guide
table, choosing the highest viscosity if the highest temperature
is foreseen.
Fig. n. 2
7.1.2 Additives
B
In addition to the normal antifoaming and antioxidant additives,
it is important to use lubricating oils with additives that have EP
(extreme-pressure) and antiwear properties, according to ISO
6743-6 L-CKC or DIN 51517-3 CLP. Clearly, therefore, products
with stronger EP characteristics will have to be found for slower
gear unit speeds. It should be remembered that the chemical
compounds replacing hydrodynamic lubrication are formed to
the detriment of the original EP load. Therefore, with very low
speeds and high loads it is important to keep to the maintenance
intervals so as not to diminish the lubricating characteristics of
the oil excessively
A
n [rpm] 50 °C
2
>20 VG150
<5 VG220
<5 VG320
70 °C
VG220
VG320
VG460
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