
Drain the hydraulic fluid that is inside the front and rear braking system tubes by disconnecting them from the master cylinder and the calliper (sect. 4 -3, Changing the brake fluid).
Disconnect the connector (a) of the abs control unit (6).

Loosen the screws (16) that retain the abs control unit support (12) and remove it from the vehicle.

Undo the four special screw (17) fixing the pipes (10), (9), (8) and (7), on the abs control unit (6), removing the gaskets (11).
Warning
Every time that gaskets (11) are removed, they must be replaced with new gaskets (11).

Important
Do not open the abs control unit: if it is faulty, replace it.
Note
If it is necessary to replace one or more pipes, follow the instructions indicated in paragraph "flexible wiring/hoses positioning" of this section.
Replacing the rear phonic wheel sensor
Refitting the abs control unitLh switch
Dip switch, light dip switch, two positions (fig. 89):
(A) every time pressed down light switches from low
beam on to low beam and high beam
on .
(B) pushed to the side = high
beam flasher (flash),
"start-stop lap" function.
Button = three-position turn
indicator ...
Checking and overhauling the components
Clearance between the clutch drum and friction plates
Insert a friction plate (e) in the clutch drum (f) and measure the clearance
(s) with a feeler gauge.
Clearance "s" must not exceed 0.6 Mm.
If it does, renew the plates and, if necessary, the clutch drum.
Overhaul of the clutch plat ...
Oil pump
Complete oil pump assembly
O-ring
Circlip
O-ring
Pump body
Circlip
Reducer bush
Spring washer
Screw
Screw
Spring washer
Pump drive gear
Key
By-pass plug
Locating bush
By-pass spring
By-pass valve
Spare parts catalogue
Diavel abs filters and oil pump
Diavel ...